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From gbaill...@apache.org
Subject svn commit: r1201252 [2/3] - in /pdfbox/trunk/xmpbox/src/main/java/org/apache/padaf/xmpbox: ./ parser/ schema/ type/
Date Sat, 12 Nov 2011 12:06:58 GMT
Modified: pdfbox/trunk/xmpbox/src/main/java/org/apache/padaf/xmpbox/parser/XMPDocumentBuilder.java
URL: http://svn.apache.org/viewvc/pdfbox/trunk/xmpbox/src/main/java/org/apache/padaf/xmpbox/parser/XMPDocumentBuilder.java?rev=1201252&r1=1201251&r2=1201252&view=diff
==============================================================================
--- pdfbox/trunk/xmpbox/src/main/java/org/apache/padaf/xmpbox/parser/XMPDocumentBuilder.java (original)
+++ pdfbox/trunk/xmpbox/src/main/java/org/apache/padaf/xmpbox/parser/XMPDocumentBuilder.java Sat Nov 12 12:06:57 2011
@@ -64,1480 +64,1504 @@ import org.apache.padaf.xmpbox.type.Thum
  * 
  */
 public class XMPDocumentBuilder {
-	protected NSMapping nsMap;
+    protected NSMapping nsMap;
 
-	protected ThreadLocal<XMLStreamReader> reader = new ThreadLocal<XMLStreamReader>();
+    protected ThreadLocal<XMLStreamReader> reader = new ThreadLocal<XMLStreamReader>();
 
-	protected List<XMPDocumentPreprocessor> preprocessors = new ArrayList<XMPDocumentPreprocessor>();
-
-	/**
-	 * Constructor of a XMPDocumentBuilder
-	 * 
-	 * @throws XmpSchemaException
-	 *             When instancing schema object failed or in PDF/A Extension
-	 *             case, if its namespace miss
-	 */
-	public XMPDocumentBuilder() throws XmpSchemaException {
-		nsMap = new NSMapping();
-	}
-
-	/**
-	 * Parsing method. Return a XMPMetadata object with all elements read
-	 * 
-	 * @param xmp
-	 *            serialized XMP
-	 * @return Metadata with all information read
-	 * @throws XmpParsingException
-	 *             When element expected not found
-	 * @throws XmpSchemaException
-	 *             When instancing schema object failed or in PDF/A Extension
-	 *             case, if its namespace miss
-	 * @throws XmpUnknownValueTypeException
-	 *             When ValueType found not correspond to basic type and not has
-	 *             been declared in current schema
-	 * @throws XmpExpectedRdfAboutAttribute
-	 *             When rdf:Description not contains rdf:about attribute
-	 * @throws XmpXpacketEndException
-	 *             When xpacket end Processing Instruction is missing or is
-	 *             incorrect
-	 * @throws BadFieldValueException
-	 *             When treat a Schema associed to a schema Description in PDF/A
-	 *             Extension schema
-	 */
-
-	public XMPMetadata parse(byte[] xmp) throws XmpParsingException,
-	XmpSchemaException, XmpUnknownValueTypeException,
-	XmpExpectedRdfAboutAttribute, XmpXpacketEndException,
-	BadFieldValueException {
-
-		if (!(this instanceof XMPDocumentPreprocessor)) {
-			for (XMPDocumentPreprocessor processor : preprocessors) {
-				NSMapping additionalNSMapping = processor.process(xmp);
-				this.nsMap.importNSMapping(additionalNSMapping);				
-			}
-		}
-
-		ByteArrayInputStream is = new ByteArrayInputStream(xmp);
-		try {
-			XMLInputFactory factory = XMLInputFactory.newInstance();
-			reader.set(factory.createXMLStreamReader(is));
-
-			// expect xpacket processing instruction
-			expectNext(XMLStreamReader.PROCESSING_INSTRUCTION,
-					"Did not find initial xpacket processing instruction");
-			XMPMetadata metadata = parseInitialXpacket(reader.get().getPIData());
-
-			// expect x:xmpmeta
-			expectNextTag(XMLStreamReader.START_ELEMENT,
-					"Did not find initial x:xmpmeta");
-			expectName("adobe:ns:meta/", "xmpmeta");
-
-			// expect rdf:RDF
-			expectNextTag(XMLStreamReader.START_ELEMENT,
-					"Did not find initial rdf:RDF");
-			expectName("http://www.w3.org/1999/02/22-rdf-syntax-ns#", "RDF");
-
-			nsMap.resetComplexBasicTypesDeclarationInEntireXMPLevel();
-			// add all namespaces which could declare nsURI of a basicValueType
-			// all others declarations are ignored
-			int nsCount = reader.get().getNamespaceCount();
-			for (int i = 0; i < nsCount; i++) {
-				if (nsMap.isComplexBasicTypes(reader.get().getNamespaceURI(i))) {
-					nsMap.setComplexBasicTypesDeclarationForLevelXMP(
-							reader.get().getNamespaceURI(i), 
-							reader.get().getNamespacePrefix(i));
-				}
-			}
-
-			// now work on each rdf:Description
-			int type = reader.get().nextTag();
-			while (type == XMLStreamReader.START_ELEMENT) {
-				parseDescription(metadata);
-				type = reader.get().nextTag();
-			}
-
-			// all description are finished
-			// expect end of rdf:RDF
-			expectType(XMLStreamReader.END_ELEMENT,
-					"Expected end of descriptions");
-			expectName("http://www.w3.org/1999/02/22-rdf-syntax-ns#", "RDF");
-
-			// expect ending xmpmeta
-			expectNextTag(XMLStreamReader.END_ELEMENT,
-					"Did not find initial x:xmpmeta");
-			expectName("adobe:ns:meta/", "xmpmeta");
-
-			// expect final processing instruction
-			expectNext(XMLStreamReader.PROCESSING_INSTRUCTION,
-					"Did not find final xpacket processing instruction");
-			// treats xpacket end
-			if (!reader.get().getPITarget().equals("xpacket")) {
-				throw new XmpXpacketEndException("Excepted PI xpacket");
-			}
-			String xpackData = reader.get().getPIData();
-			// end attribute must be present and placed in first
-			// xmp spec says Other unrecognized attributes can follow, but
-			// should be ignored
-			if (xpackData.startsWith("end=")) {
-				// check value (5 for end='X')
-				if (xpackData.charAt(5)!='r' && xpackData.charAt(5)!='w') {
-					throw new XmpXpacketEndException(
-							"Excepted xpacket 'end' attribute with value 'r' or 'w' ");
-				}
-			} else {
-				// should find end='r/w'
-				throw new XmpXpacketEndException(
-						"Excepted xpacket 'end' attribute (must be present and placed in first)");
-			}
-
-			metadata.setEndXPacket(xpackData);
-			// return constructed object
-			return metadata;
-		} catch (XMLStreamException e) {
-			throw new XmpParsingException("An error has occured when processing the underlying XMP source", e);
-		} finally {
-			reader.remove();
-			IOUtils.closeQuietly(is);
-		}
-	}
-
-	/**
-	 * Parsing method using serialized xmp read from a stream
-	 * 
-	 * @param is
-	 *            The stream to read
-	 * @return Metadata with all information read
-	 * @throws XmpParsingException
-	 *             When element expected not found When element expected not
-	 *             found
-	 * @throws XmpSchemaException
-	 *             When instancing schema object failed or in PDF/A Extension
-	 *             case, if its namespace miss
-	 * @throws XmpUnknownValueTypeException
-	 *             When ValueType found not correspond to basic type and not has
-	 *             been declared in current schema
-	 * @throws XmpExpectedRdfAboutAttribute
-	 *             When rdf:Description not contains rdf:about attribute
-	 * @throws XmpXpacketEndException
-	 *             When xpacket end Processing Instruction is missing or is
-	 *             incorrect
-	 * @throws BadFieldValueException
-	 *             When treat a Schema associed to a schema Description in PDF/A
-	 *             Extension schema
-	 */
-	public XMPMetadata parse(InputStream input) throws XmpParsingException,
-	XmpSchemaException, XmpUnknownValueTypeException,
-	XmpExpectedRdfAboutAttribute, XmpXpacketEndException,
-	BadFieldValueException {
-
-		byte[] bos = getStreamAsByteArray(input);
-		return parse(bos);
-	}
-
-	private byte[] getStreamAsByteArray(InputStream input) throws XmpParsingException {
-		ByteArrayOutputStream bos = new ByteArrayOutputStream();
-		try {
-			IOUtils.copyLarge(input, bos);
-		} catch (IOException e) {
-			throw new XmpParsingException("An error has occured when processing the underlying XMP source", e);
-		} finally {
-			IOUtils.closeQuietly(bos);
-			IOUtils.closeQuietly(input);
-		}
-		return bos.toByteArray();
-	}
-
-	public void addPreprocessor(XMPDocumentPreprocessor processor) {
-		this.preprocessors.add(processor);
-	}
-
-	/**
-	 * Check InitialXPacket and build metadata object with these information
-	 * 
-	 * @param data
-	 *            data corresponding to Initial XPacket Processing Instruction
-	 *            Processing Information corresponding to Inital XPacket data
-	 * @return Metadata with specified information
-	 * @throws XmpInitialXPacketParsingException
-	 *             When Initial XPacket missing or is incorrect
-	 * @throws CreateXMPMetadataException
-	 *             If DOM Document associated could not be created
-	 */
-	protected XMPMetadata parseInitialXpacket(String data)
-			throws XmpInitialXPacketParsingException,
-			CreateXMPMetadataException {
-		StringTokenizer tokens = new StringTokenizer(data, " ");
-		String id = null;
-		String begin = null;
-		String bytes = null;
-		String encoding = null;
-		while (tokens.hasMoreTokens()) {
-			String token = tokens.nextToken();
-			if (!token.endsWith("\"") && !token.endsWith("\'")) {
-				throw new XmpInitialXPacketParsingException(
-						"Cannot understand PI data part : '" + token + "'");
-			}
-			String quote = token.substring(token.length()-1);
-			int pos = token.indexOf("="+quote);
-			if (pos <= 0) {
-				throw new XmpInitialXPacketParsingException(
-						"Cannot understand PI data part : '" + token + "'");
-			}
-			String name = token.substring(0, pos);
-			String value = token.substring(pos + 2, token.length() - 1);
-			if ("id".equals(name)) {
-				id = value;
-			} else if ("begin".equals(name)) {
-				begin = value;
-			} else if ("bytes".equals(name)) {
-				bytes = value;
-			} else if ("encoding".equals(name)) {
-				encoding = value;
-			} else {
-				throw new XmpInitialXPacketParsingException(
-						"Unknown attribute in xpacket PI : '" + token + "'");
-			}
-		}
-		return new XMPMetadata(begin, id, bytes, encoding);
-	}
-
-	/**
-	 * Check the next element type. all comments are ignored.
-	 * 
-	 * @param expectType
-	 *            Type of xml element expected
-	 * @param message
-	 *            Error message if problems occur
-	 * @throws XmpParsingException
-	 *             When element expected not found
-	 * @throws XmpUnexpectedTypeException
-	 *             When DOM Element type found unexpected When DOM Element type
-	 *             found unexpected
-	 * @throws XMLStreamException
-	 *             When error during reading the rest of xmp stream When error
-	 *             during reading the rest of xmp stream
-	 */
-	private void expectNext(int expectType, String message)
-			throws XmpParsingException, XmpUnexpectedTypeException,
-			XMLStreamException {
-		try {
-			int type = reader.get().next();
-			while (type == XMLStreamReader.COMMENT || type == XMLStreamReader.SPACE) {
-				type = reader.get().next();
-			}
-			if (type != expectType) {
-				throw new XmpUnexpectedTypeException(message);
-			}
-		} catch (NoSuchElementException e) {
-			// unexpected end of stream
-			throw new XmpParsingException(
-					"XMP Stream did not end in a good way, invalid content");
-		}
-	}
-
-	/**
-	 * Check the next element type. White spaces , Comments and Processing
-	 * Instructions are ignored.
-	 * 
-	 * @param type
-	 *            Type of xml element expected
-	 * @param message
-	 *            Error message if problems occur
-	 * @throws XmpParsingException
-	 *             When element expected not found
-	 * @throws XmpUnexpectedTypeException
-	 *             When DOM Element type found unexpected
-	 * @throws XMLStreamException
-	 *             When error during reading the rest of xmp stream
-	 */
-	private void expectNextTag(int type, String message)
-			throws XmpParsingException, XmpUnexpectedTypeException,
-			XMLStreamException {
-		try {
-			if (!(reader.get().nextTag() == type)) {
-				throw new XmpUnexpectedTypeException(message);
-			}
-		} catch (NoSuchElementException e) {
-			// unexpected end of stream
-			throw new XmpParsingException(
-					"XMP Stream did not end in a good way, invalid content");
-		}
-	}
-
-	/**
-	 * check if qualified name of current element is what is expected
-	 * 
-	 * @param namespace
-	 *            namespace URI
-	 * @param name
-	 *            current element name
-	 * @throws XmpUnexpectedElementQualifiedNameException
-	 *             When a qualifiedName found and is not that expected
-	 * 
-	 */
-	private void expectName(String namespace, String name)
-			throws XmpUnexpectedElementQualifiedNameException {
-		if (!reader.get().getNamespaceURI().equals(namespace)) {
-			throw new XmpUnexpectedElementQualifiedNameException("Expected '"
-					+ namespace + "' and found '"
-					+ reader.get().getNamespaceURI() + "'");
-		}
-		if (!reader.get().getLocalName().equals(name)) {
-			throw new XmpUnexpectedElementQualifiedNameException("Expected '"
-					+ name + "' and found '" + reader.get().getLocalName()
-					+ "'");
-		}
-	}
-
-	/**
-	 * Check the current element type.
-	 * 
-	 * @param type
-	 *            XML element type expected
-	 * @param message
-	 *            Error Message if problems occur
-	 * @throws XmpUnexpectedTypeException
-	 *             When DOM Element type found unexpected
-	 */
-	private void expectType(int type, String message)
-			throws XmpUnexpectedTypeException {
-		if (!(type == reader.get().getEventType())) {
-			throw new XmpUnexpectedTypeException("Expected type " + type
-					+ " and found " + reader.get().getEventType() + " : "
-					+ message);
-		}
-	}
-
-	/**
-	 * Check if rdf:about attribute is declared for rdf description and add all
-	 * attributes to the schema
-	 * 
-	 * @param metadata
-	 *            Metadata to attach new elements
-	 * @param schema
-	 *            Schema corresponding to the rdf:Description use
-	 * @throws XmpExpectedRdfAboutAttribute
-	 *             When rdf:Description not contains rdf:about attribute
-	 * @throws XmpUnexpectedTypeException if the attribute is known 
-	 * as an expected property but the property type isn't a Simple type.
-	 */
-	protected final void treatDescriptionAttributes(XMPMetadata metadata, XMPSchema schema) 
-	throws XmpExpectedRdfAboutAttribute, XmpUnexpectedTypeException {
-		int cptAtt = reader.get().getAttributeCount();
-		if (cptAtt < 1) {
-			System.out.println(reader.get().getLocalName());
-			throw new XmpExpectedRdfAboutAttribute(
-					"Expected rdf:about attribute not found");
-
-		} else {
-			int i = 0;
-			boolean rdfAboutFound = false;
-			String prefix;
-			while (i < cptAtt) {
-				// rdf:about attribute must be here and can be presented by
-				// rdf:about and about
-				// according to
-				// http://www.w3.org/TR/1999/REC-rdf-syntax-19990222/#basic
-				// (2.2. Basic RDF Syntax)
-				if (reader.get().getAttributeLocalName(i).equals("about")) {
-					prefix = reader.get().getAttributePrefix(i);
-					if (prefix != null) {
-						if (!prefix.equals("") && !prefix.equals("rdf")) {
-							// System.out.println("prefix de l'attribut "+reader.get().getAttributeLocalName(i)+": "+prefix);
-							throw new XmpExpectedRdfAboutAttribute(
-									"An about attribute is present but have an invalid prefix (it must be 'rdf')");
-						}
-					}
-					rdfAboutFound = true;
-				}
-
-				Attribute attr = new Attribute(null, reader.get()
-						.getAttributePrefix(i), reader.get()
-						.getAttributeLocalName(i), reader.get()
-						.getAttributeValue(i));
-
-				if (!addAttributeAsProperty(metadata, schema, attr)) {
-					// attribute isn't a property, so add the attribute
-					schema.setAttribute(attr);	
-				}
-
-				i++;
-			}
-			if (!rdfAboutFound) {
-				System.out.println(reader.get().getLocalName());
-				throw new XmpExpectedRdfAboutAttribute(
-						"Expected rdf:about attribute not found");
-			}
-		}
-	}
-
-	/**
-	 * If the attribute has same the name as an expected property of the Schema, then the property is created using the attributes fields.
-	 * 
-	 * @param metadata Metadata to attach new elements
-	 * @param schema Schema corresponding to the rdf:Description use
-	 * @param attr the attribute used to create the property
-	 * @return true if the attribute has been converted into Property
-	 */
-	private boolean addAttributeAsProperty(XMPMetadata metadata, XMPSchema schema, Attribute attr) {
-		boolean added = false;
-		String schemaNamespace = schema.getNamespaceValue();
-		String prefix = attr.getPrefix() != null ? attr.getPrefix() : schema.getPrefix();
-		String type = this.nsMap.getSpecifiedPropertyType(schemaNamespace, new QName(schemaNamespace, attr.getLocalName(), prefix));
-		if (type != null) {
-			if (type.equals("Text")) {
-				schema.getContent().addProperty(new TextType(metadata, prefix, attr.getLocalName(), attr.getValue()));
-				added = true;
-			} else if (type.equals("Integer")) {
-				schema.getContent().addProperty(new IntegerType(metadata, prefix, attr.getLocalName(), attr.getValue()));
-				added = true;
-			} else if (type.equals("Boolean")) {
-				schema.getContent().addProperty(new BooleanType(metadata, prefix, attr.getLocalName(), attr.getValue()));
-				added = true;
-			} else if (type.equals("Real")) {
-				schema.getContent().addProperty(new RealType(metadata, prefix, attr.getLocalName(), attr.getValue()));
-				added = true;
-			} else if (type.equals("Date")) {
-				schema.getContent().addProperty(new DateType(metadata, prefix, attr.getLocalName(), attr.getValue()));
-				added = true;
-			} else if (type.equals("URI")) {
-				schema.getContent().addProperty(new TextType(metadata, prefix, attr.getLocalName(), attr.getValue()));
-				added = true;
-			} else if (type.equals("URL")) {
-				schema.getContent().addProperty(new TextType(metadata, prefix, attr.getLocalName(), attr.getValue()));
-				added = true;
-			}
-		}
-		return added;
-	}
-	
-	/**
-	 * Treat each rdf:Description (which must represent a schema), instanciate
-	 * class representation of this schema and add it to metadata
-	 * 
-	 * @param metadata
-	 *            Metadata to attach new elements
-	 * @throws XmpParsingException
-	 *             When element expected not found
-	 * @throws XMLStreamException
-	 *             When error during reading the rest of xmp stream
-	 * @throws XmpSchemaException
-	 *             When instancing schema object failed or in PDF/A Extension
-	 *             case, if its namespace miss
-	 * @throws XmpUnknownValueTypeException
-	 *             When ValueType found not correspond to basic type and not has
-	 *             been declared in current schema
-	 * @throws XmpExpectedRdfAboutAttribute
-	 *             When rdf:Description not contains rdf:about attribute
-	 * @throws BadFieldValueException
-	 *             When a bad value found in Schema description content
-	 */
-	protected void parseDescription(XMPMetadata metadata)
-			throws XmpParsingException, XMLStreamException, XmpSchemaException,
-			XmpUnknownValueTypeException, XmpExpectedRdfAboutAttribute,
-			BadFieldValueException {
-		nsMap.resetComplexBasicTypesDeclarationInSchemaLevel();
-		int cptNS = reader.get().getNamespaceCount();
-		HashMap<String, String> namespaces = new HashMap<String, String>();
-		for (int i = 0; i < cptNS; i++) {
-			namespaces.put(reader.get().getNamespacePrefix(i), reader.get()
-					.getNamespaceURI(i));
-			if (nsMap.isComplexBasicTypes(reader.get().getNamespaceURI(i))) {
-				// System.out.println("in parseDesc method: prefix:"+reader.get().getNamespacePrefix(i)+", nsURI:"+reader.get().getNamespaceURI(i));
-				nsMap.setComplexBasicTypesDeclarationForLevelSchema(reader
-						.get().getNamespaceURI(i), reader.get()
-						.getNamespacePrefix(i));
-			}
-		}
-		// Different treatment for PDF/A Extension schema
-		// System.out.println(PDFAExtensionSchema.PDFAEXTENSION+";"+PDFAExtensionSchema.PDFAPROPERTY+";"+PDFAExtensionSchema.PDFASCHEMA);
-		if (namespaces.containsKey(PDFAExtensionSchema.PDFAEXTENSION)) {
-			if (namespaces.containsKey(PDFAExtensionSchema.PDFAPROPERTY)
-					&& namespaces.containsKey(PDFAExtensionSchema.PDFASCHEMA)) {
-				if (namespaces
-						.containsValue(PDFAExtensionSchema.PDFAEXTENSIONURI)
-						&& namespaces
-						.containsValue(PDFAExtensionSchema.PDFAPROPERTYURI)
-						&& namespaces
-						.containsValue(PDFAExtensionSchema.PDFASCHEMAURI)) {
-					PDFAExtensionSchema schema = metadata
-							.createAndAddPDFAExtensionSchemaWithNS(namespaces);
-					treatDescriptionAttributes(metadata, schema);
-					parseExtensionSchema(schema, metadata);
-
-				} else {
-					throw new XmpUnexpectedNamespaceURIException(
-							"Unexpected namespaceURI in PDFA Extension Schema encountered");
-				}
-			} else {
-				throw new XmpUnexpectedNamespacePrefixException(
-						"Unexpected namespace Prefix in PDFA Extension Schema");
-			}
-
-		} else {
-			// TODO Considering first namespace is that corresponding to the
-			// schema (see if it must be changed)
-			String namespaceUri = reader.get().getNamespaceURI(0);
-			String namespacePrefix = reader.get().getNamespacePrefix(0);
-			XMPSchema schema = nsMap.getAssociatedSchemaObject(metadata, namespaceUri, namespacePrefix);
-			if (schema != null) {
-				namespaces.remove(namespacePrefix);
-			} else {
-				schema = metadata.createAndAddDefaultSchema(namespacePrefix,namespaceUri);
-			}
-			for (int i = 1; i < cptNS; i++) {
-				schema.setAttribute(new Attribute(XMPSchema.NS_NAMESPACE,
-						"xmlns", reader.get().getNamespacePrefix(i), reader.get().getNamespaceURI(i)));
-			}
-			treatDescriptionAttributes(metadata, schema);
-			while (reader.get().nextTag() == XMLStreamReader.START_ELEMENT) {
-				parseProperty(schema, metadata);
-			}
-		}
-
-	}
-
-	/**
-	 * Check the next element type and its expected value
-	 * 
-	 * @param type
-	 *            expected type of xml element
-	 * @param localNameExpected
-	 *            The property name (local) expected
-	 * @param message
-	 *            Error message if problems occur
-	 * @throws XmpUnexpectedTypeException
-	 *             When DOM Element type found unexpected
-	 * @throws XmpParsingException
-	 *             When element expected not found
-	 * @throws XMLStreamException
-	 *             When error during reading the rest of xmp stream
-	 */
-	private void expectNextSpecificTag(int type, String localNameExpected,
-			String message) throws XmpUnexpectedTypeException,
-			XmpParsingException, XMLStreamException {
-		expectNextTag(type, message);
-		expectCurrentLocalName(localNameExpected);
-	}
-
-	/**
-	 * check that the current local name is that expected
-	 * 
-	 * @param localNameExpected
-	 *            The name expected
-	 * @throws XmpUnexpectedElementException
-	 *             When Element is not that expected
-	 */
-	private void expectCurrentLocalName(String localNameExpected)
-			throws XmpUnexpectedElementException {
-		if (!reader.get().getLocalName().equals(localNameExpected)) {
-			throw new XmpUnexpectedElementException("'" + localNameExpected
-					+ "' expected and '" + reader.get().getLocalName()
-					+ "' found");
-		}
-	}
-
-	/**
-	 * Treat a PDFAExtension schema
-	 * 
-	 * @param schema
-	 *            PDFA/Extension schema where save information found
-	 * @param metadata
-	 *            Metadata to attach new elements
-	 * @throws XmpParsingException
-	 *             When element expected not found
-	 * @throws XMLStreamException
-	 *             When error during reading the rest of xmp stream
-	 * @throws XmpUnknownValueTypeException
-	 *             When ValueType found not correspond to basic type and not has
-	 *             been declared in current schema
-	 * @throws BadFieldValueException
-	 *             When one of a field property include to describe a property
-	 *             in Schema Description contain an incorrect value
-	 */
-	protected final void parseExtensionSchema(PDFAExtensionSchema schema,
-			XMPMetadata metadata) throws XmpParsingException,
-			XMLStreamException, XmpUnknownValueTypeException,
-			BadFieldValueException {
-		// <pdfaExtension:schemas>
-		expectNextSpecificTag(XMLStreamReader.START_ELEMENT, "schemas",
-				"Cannot find container declaration of schemas descriptions ");
-		// <rdf:Bag>
-		expectNextSpecificTag(XMLStreamReader.START_ELEMENT, "Bag",
-				"Cannot find bag declaration for container of schemas descriptions");
-		// now work on each rdf:li corresponding to each schema description
-		int type = reader.get().nextTag();
-		while (type == XMLStreamReader.START_ELEMENT) {
-			parseSchemaDescription(schema, metadata);
-			type = reader.get().nextTag();
-		}
-		expectNextSpecificTag(XMLStreamReader.END_ELEMENT, "schemas",
-				"Cannot find end of container declaration in schemas descriptions ");
-		expectNextSpecificTag(XMLStreamReader.END_ELEMENT, "Description",
-				"Cannot find end of PDF/A Extension definition ");
-
-	}
-
-	/**
-	 * Treat one Schema description defined in the extension Schema found
-	 * 
-	 * @param schema
-	 *            PDFA/Extension schema where save information found
-	 * @param metadata
-	 *            Metadata to attach new elements
-	 * @throws XMLStreamException
-	 *             When error during reading the rest of xmp stream
-	 * @throws XmpParsingException
-	 *             When element expected not found
-	 * @throws XmpUnknownValueTypeException
-	 *             When ValueType found not correspond to basic type and not has
-	 *             been declared in current schema
-	 * @throws BadFieldValueException
-	 *             When one of a field property contain an incorrect value
-	 */
-	private void parseSchemaDescription(PDFAExtensionSchema schema,
-			XMPMetadata metadata) throws XMLStreamException,
-			XmpParsingException, XmpUnknownValueTypeException,
-			BadFieldValueException {
-		expectCurrentLocalName("li");
-		SchemaDescription desc = schema.createSchemaDescription();
-		int type = reader.get().nextTag();
-		while (type == XMLStreamReader.START_ELEMENT) {
-			if (reader.get().getLocalName().equals("schema")
-					|| reader.get().getLocalName().equals("namespaceURI")
-					|| reader.get().getLocalName().equals("prefix")) {
-				try {
-					// System.out.println(reader.get().getPrefix()+";"+reader.get().getLocalName()+";"+reader.get().getElementText());
-					desc.addProperty(new TextType(metadata, reader.get()
-							.getPrefix(), reader.get().getLocalName(), reader
-							.get().getElementText()));
-				} catch (IllegalArgumentException e) {
-					throw new XmpPropertyFormatException(
-							"Unexpected value for '"
-									+ reader.get().getLocalName()
-									+ "' property");
-				}
-			} else if (reader.get().getLocalName().equals("property")) {
-				parsePropertyDefinition(desc);
-			} else if (reader.get().getLocalName().equals("valueType")) {
-				parseValueTypeDefinition(desc, metadata);
-
-			} else {
-				throw new XmpUnexpectedElementException(
-						"Unexpected property definition in one of PDF/A Extension schemas description");
-			}
-			type = reader.get().nextTag();
-		}
-		schema.addSchemaDescription(desc);
-		nsMap.setNamespaceDefinition(desc);
-
-	}
-
-	/**
-	 * Treat value type definition for a specific Schema Description
-	 * 
-	 * @param desc
-	 *            the current Schema Description analyzed
-	 * @param metadata
-	 *            Metadata to attach new elements
-	 * @throws XmpParsingException
-	 *             When element expected not found
-	 * @throws XMLStreamException
-	 *             When error during reading the rest of xmp stream
-	 */
-	private void parseValueTypeDefinition(SchemaDescription desc,
-			XMPMetadata metadata) throws XmpParsingException,
-			XMLStreamException {
-		// <rdf:Seq>
-		expectNextSpecificTag(XMLStreamReader.START_ELEMENT, "Seq",
-				"Expected Seq Declaration");
-		int elmtType = reader.get().nextTag();
-		String type, namespaceURI, prefix, description;
-		List<PDFAFieldDescription> fields;
-		while (elmtType == XMLStreamReader.START_ELEMENT) {
-			type = null;
-			namespaceURI = null;
-			prefix = null;
-			description = null;
-			fields = null;
-			expectCurrentLocalName("li");
-			elmtType = reader.get().nextTag();
-			while (elmtType == XMLStreamReader.START_ELEMENT) {
-				if (reader.get().getLocalName().equals("type")) {
-					type = reader.get().getElementText();
-				} else if (reader.get().getLocalName().equals("namespaceURI")) {
-					namespaceURI = reader.get().getElementText();
-				} else if (reader.get().getLocalName().equals("prefix")) {
-					prefix = reader.get().getElementText();
-				} else if (reader.get().getLocalName().equals("description")) {
-					description = reader.get().getElementText();
-				} else if (reader.get().getLocalName().equals("field")) {
-					fields = parseFieldDescription(metadata);
-
-				} else {
-					throw new XmpUnexpectedElementException(
-							"Unexpected property definition in one of ValueType Descriptions of PDF/A Extension schemas description");
-				}
-				elmtType = reader.get().nextTag();
-			}
-			if ((type != null) && (namespaceURI != null) && (prefix != null)
-					&& (description != null)) {
-				desc.addValueType(type, namespaceURI, prefix, description,
-						fields);
-			} else {
-				throw new XmpRequiredPropertyException(
-						"one property declaration in PDF/A Extension is not complete");
-			}
-			elmtType = reader.get().nextTag();
-		}
-		expectNextSpecificTag(XMLStreamReader.END_ELEMENT, "valueType",
-				"Expected End of ValueType Declaration");
-
-	}
-
-	/**
-	 * Treat field description on the current analyzed value type description
-	 * 
-	 * @param metadata
-	 *            Metadata to attach new elements
-	 * @return A list of parsed fields
-	 * @throws XMLStreamException
-	 *             When error during reading the rest of xmp stream
-	 * @throws XmpParsingException
-	 *             When element expected not found
-	 */
-	private List<PDFAFieldDescription> parseFieldDescription(
-			XMPMetadata metadata) throws XmpParsingException,
-			XMLStreamException {
-		List<PDFAFieldDescription> fields = new ArrayList<PDFAFieldDescription>();
-		// <rdf:Seq>
-		expectNextSpecificTag(XMLStreamReader.START_ELEMENT, "Seq",
-				"Expected Seq Declaration");
-		int elmtType = reader.get().nextTag();
-		String name, type, description;
-		while (elmtType == XMLStreamReader.START_ELEMENT) {
-			expectCurrentLocalName("li");
-			elmtType = reader.get().nextTag();
-			name = null;
-			type = null;
-			description = null;
-
-			while (elmtType == XMLStreamReader.START_ELEMENT) {
-				if (reader.get().getLocalName().equals("name")) {
-					name = reader.get().getElementText();
-				} else if (reader.get().getLocalName().equals("valueType")) {
-					type = reader.get().getElementText();
-				} else if (reader.get().getLocalName().equals("description")) {
-					description = reader.get().getElementText();
-				} else {
-					throw new XmpUnexpectedElementException(
-							"Unexpected property definition in one of ValueType Field Descriptions of PDF/A Extension schemas description");
-				}
-				elmtType = reader.get().nextTag();
-			}
-			if ((name != null) && (type != null) && (description != null)) {
-				PDFAFieldDescription tmp = new PDFAFieldDescription(metadata);
-				tmp.setNameValue(name);
-				tmp.setValueTypeValue(type);
-				tmp.setDescriptionValue(description);
-				fields.add(tmp);
-			} else {
-				throw new XmpRequiredPropertyException(
-						"One valuetype field declaration in PDF/A Extension is not complete");
-			}
-			// expectNextTag(XMLStreamReader.END_ELEMENT,"Expected element end");
-			elmtType = reader.get().nextTag();
-		}
-		expectNextSpecificTag(XMLStreamReader.END_ELEMENT, "field",
-				"Expected End of Properties Declaration");
-		if (fields.size() != 0) {
-			return fields;
-		}
-		return null;
-	}
-
-	/**
-	 * Treat a property definition for a specific Schema Description
-	 * 
-	 * @param desc
-	 *            the current Schema Description analyzed
-	 * @throws XmpParsingException
-	 *             When element expected not found
-	 * @throws XMLStreamException
-	 *             When error during reading the rest of xmp stream
-	 * @throws BadFieldValueException
-	 *             When one of a field property contain an incorrect value
-	 */
-	private void parsePropertyDefinition(SchemaDescription desc)
-			throws XmpParsingException, XMLStreamException,
-			BadFieldValueException {
-		// <rdf:Seq>
-		expectNextSpecificTag(XMLStreamReader.START_ELEMENT, "Seq",
-				"Expected Seq Declaration");
-		// Each property definition
-		int elmtType = reader.get().nextTag();
-		String name, type, category, description;
-		while (elmtType == XMLStreamReader.START_ELEMENT) {
-			expectCurrentLocalName("li");
-			elmtType = reader.get().nextTag();
-			name = null;
-			type = null;
-			category = null;
-			description = null;
-
-			while (elmtType == XMLStreamReader.START_ELEMENT) {
-				if (reader.get().getLocalName().equals("name")) {
-					name = reader.get().getElementText();
-				} else if (reader.get().getLocalName().equals("valueType")) {
-					type = reader.get().getElementText();
-				} else if (reader.get().getLocalName().equals("category")) {
-					category = reader.get().getElementText();
-				} else if (reader.get().getLocalName().equals("description")) {
-					description = reader.get().getElementText();
-				} else {
-					throw new XmpUnexpectedElementException(
-							"Unexpected property definition in one of Properties Descriptions of PDF/A Extension schemas description");
-				}
-				elmtType = reader.get().nextTag();
-			}
-			if ((name != null) && (type != null) && (category != null)
-					&& (description != null)) {
-				desc.addProperty(name, type, category, description);
-			} else {
-				throw new XmpRequiredPropertyException(
-						"one property declaration in PDF/A Extension is not complete");
-			}
-			// expectNextTag(XMLStreamReader.END_ELEMENT,"Expected element end");
-			elmtType = reader.get().nextTag();
-		}
-		expectNextSpecificTag(XMLStreamReader.END_ELEMENT, "property",
-				"Expected End of Properties Declaration");
-	}
-
-	/**
-	 * Check for all namespaces declared for the specified schema if the
-	 * property searched exists and return its type or null
-	 * 
-	 * @param schema
-	 *            The Schema to analyze
-	 * @param prop
-	 *            The property Qualified Name
-	 * @return The property value type or null if not found in schema
-	 * @throws XmpParsingException
-	 *             When element expected not found
-	 */
-	private String getPropertyDeclarationInNamespaces(XMPSchema schema,
-			QName prop) throws XmpParsingException {
-
-		Iterator<Attribute> it = schema.getAllAttributes().iterator();
-		Attribute tmp;
-		ArrayList<Attribute> list = new ArrayList<Attribute>();
-		while (it.hasNext()) {
-			tmp = it.next();
-			if (tmp.getPrefix() != null) {
-				if (tmp.getPrefix().equals("xmlns")) {
-					list.add(tmp);
-				}
-			}
-		}
-		it = list.iterator();
-		String type;
-		StringBuffer unknownNS = new StringBuffer();
-		while (it.hasNext()) {
-			String namespace = it.next().getValue();
-			if (!nsMap.isContainedNamespace(namespace)) {
-				unknownNS.append(" '").append(namespace).append("' ");
-				continue;
-			}
-			type = nsMap.getSpecifiedPropertyType(namespace, prop);
-			if (type != null) {
-				return type;
-			}
-		}
-		String uns = unknownNS.toString().trim();
-		if ((uns == null) || "".equals(uns)) {
-			throw new XmpUnknownPropertyException(
-					"Cannot find a description for '" + prop.getLocalPart()
-					+ "' property");
-		} else {
-			throw new XmpUnknownSchemaException(
-					"Cannot find a definition for the namespace " + uns + " ");
-		}
-
-	}
-
-	/**
-	 * Build a property with the specific type defined in schema or complex
-	 * property and add it to the object representation
-	 * 
-	 * @param metadata
-	 *            Metadata to attach new elements
-	 * @param propertyName
-	 *            The fully qualified name of the property
-	 * @param stype
-	 *            Type of the property
-	 * @param container
-	 *            the entity where place the property representation
-	 * @throws XmpUnknownPropertyTypeException
-	 *             Value Type property is incorrect or the basic value type
-	 *             can't be treat at the moment
-	 * @throws XmpPropertyFormatException
-	 *             Unexpected type found (IllegalArgumentException)
-	 * @throws XMLStreamException
-	 *             When error during reading the rest of xmp stream
-	 */
-	protected void parseXmpSimpleProperty(XMPMetadata metadata,
-			QName propertyName, XmpPropertyType stype,
-			ComplexPropertyContainer container)
-					throws XmpUnknownPropertyTypeException, XmpPropertyFormatException,
-					XMLStreamException {
-		try {
-			AbstractSimpleProperty prop = null;
-			ArrayList<Attribute> attributes = new ArrayList<Attribute>();
-			int cpt = reader.get().getAttributeCount();
-			for (int i = 0; i < cpt; i++) {
-				attributes.add(new Attribute(null, reader.get()
-						.getAttributePrefix(i), reader.get()
-						.getAttributeLocalName(i), reader.get()
-						.getAttributeValue(i)));
-			}
-			if (stype == XmpPropertyType.Text) {
-				prop = new TextType(metadata, propertyName.getPrefix(),
-						propertyName.getLocalPart(), reader.get()
-						.getElementText());
-			} else if (stype == XmpPropertyType.Integer) {
-				prop = new IntegerType(metadata, propertyName.getPrefix(),
-						propertyName.getLocalPart(), reader.get()
-						.getElementText());
-			} else if (stype == XmpPropertyType.Date) {
-				prop = new DateType(metadata, propertyName.getPrefix(),
-						propertyName.getLocalPart(), reader.get()
-						.getElementText());
-			} else if (stype == XmpPropertyType.Boolean) {
-				prop = new BooleanType(metadata, propertyName.getPrefix(),
-						propertyName.getLocalPart(), reader.get()
-						.getElementText());
-			} else if (stype == XmpPropertyType.Real) {
-				prop = new RealType(metadata, propertyName.getPrefix(),
-						propertyName.getLocalPart(), reader.get()
-						.getElementText());
-			}
-			if (prop != null) {
-				container.addProperty(prop);
-				// ADD ATTRIBUTES
-				for (Attribute att : attributes) {
-					prop.setAttribute(att);
-				}
-			} else {
-				throw new XmpUnknownPropertyTypeException(
-						"Unknown simple type found");
-			}
-		} catch (IllegalArgumentException e) {
-			throw new XmpPropertyFormatException(
-					"Unexpected type found for the property '"
-							+ propertyName.getLocalPart() + "'", e);
-		}
-	}
-
-	/**
-	 * Parse a bag property (unordered array) with the specific type defined in
-	 * schema or complex property and add it to the object representation
-	 * 
-	 * @param metadata
-	 *            Metadata to attach new elements
-	 * @param bagName
-	 *            name of bag property
-	 * @param stype
-	 *            type of values contained in this bag
-	 * @param container
-	 *            the entity where place the property representation
-	 * @throws XmpUnexpectedTypeException
-	 *             When DOM Element type found unexpected
-	 * @throws XmpParsingException
-	 *             When element expected not found
-	 * @throws XMLStreamException
-	 *             When error during reading the rest of xmp stream
-	 * @throws XmpUnknownPropertyTypeException
-	 *             Value Type property is incorrect or the basic value type
-	 *             can't be treat at the moment
-	 * @throws XmpPropertyFormatException
-	 *             Unexpected type found (IllegalArgumentException)
-	 */
-	protected void parseBagProperty(XMPMetadata metadata, QName bagName,
-			XmpPropertyType stype, ComplexPropertyContainer container)
-					throws XmpUnexpectedTypeException, XmpParsingException,
-					XMLStreamException, XmpUnknownPropertyTypeException,
-					XmpPropertyFormatException {
-		ComplexProperty bag = new ComplexProperty(metadata,
-				bagName.getPrefix(), bagName.getLocalPart(),
-				ComplexProperty.UNORDERED_ARRAY);
-		container.addProperty(bag);
-		// <rdf:Bag>
-		expectNextSpecificTag(XMLStreamReader.START_ELEMENT, "Bag",
-				"Expected Seq Declaration");
-		// Each property definition
-		int elmtType = reader.get().nextTag();
-		while ((elmtType != XMLStreamReader.END_ELEMENT)
-				&& !reader.get().getName().getLocalPart().equals("Bag")) {
-			parseXmpSimpleProperty(metadata, reader.get().getName(), stype, bag
-					.getContainer());
-			elmtType = reader.get().nextTag();
-
-		}
-		expectNextSpecificTag(XMLStreamReader.END_ELEMENT, bagName
-				.getLocalPart(), "Expected end of Bag property");
-
-	}
-
-	/**
-	 * Parse a seq property (ordered array) with the specific type defined in
-	 * schema or complex property and add it to the object representation
-	 * 
-	 * @param metadata
-	 *            Metadata to attach new elements
-	 * @param seqName
-	 *            name of the seq
-	 * @param stype
-	 *            type of values contained in this bag
-	 * @param container
-	 *            the entity where place the property representation
-	 * @throws XmpUnexpectedTypeException
-	 *             When DOM Element type found unexpected
-	 * @throws XmpParsingException
-	 *             When element expected not found
-	 * @throws XMLStreamException
-	 *             When error during reading the rest of xmp stream
-	 * @throws XmpUnknownPropertyTypeException
-	 *             Value Type property is incorrect or the basic value type
-	 *             can't be treat at the moment
-	 * @throws XmpPropertyFormatException
-	 *             Unexpected type found (IllegalArgumentException)
-	 */
-	protected void parseSeqProperty(XMPMetadata metadata, QName seqName,
-			XmpPropertyType stype, ComplexPropertyContainer container)
-					throws XmpUnexpectedTypeException, XmpParsingException,
-					XMLStreamException, XmpUnknownPropertyTypeException,
-					XmpPropertyFormatException {
-		ComplexProperty seq = new ComplexProperty(metadata,
-				seqName.getPrefix(), seqName.getLocalPart(),
-				ComplexProperty.ORDERED_ARRAY);
-		container.addProperty(seq);
-		// <rdf:Bag>
-		expectNextSpecificTag(XMLStreamReader.START_ELEMENT, "Seq",
-				"Expected Seq Declaration");
-		// Each property definition
-		int elmtType = reader.get().nextTag();
-		while ((elmtType != XMLStreamReader.END_ELEMENT)
-				&& !reader.get().getName().getLocalPart().equals("Seq")) {
-			parseXmpSimpleProperty(metadata, reader.get().getName(), stype, seq
-					.getContainer());
-			elmtType = reader.get().nextTag();
-
-		}
-		expectNextSpecificTag(XMLStreamReader.END_ELEMENT, seqName
-				.getLocalPart(), "Expected end of Seq property");
-	}
-
-	/**
-	 * Parse Alt property (Alternative language property) with the specific type
-	 * defined in schema or complex property and add it to the object
-	 * representation
-	 * 
-	 * @param metadata
-	 *            Metadata to attach new elements
-	 * @param altName
-	 *            name of Alt property
-	 * @param stype
-	 *            type of values contained in this bag
-	 * @param container
-	 *            the entity where place the property representation
-	 * @throws XmpUnexpectedTypeException
-	 *             When DOM Element type found unexpected
-	 * @throws XmpParsingException
-	 *             When element expected not found
-	 * @throws XMLStreamException
-	 *             When error during reading the rest of xmp stream
-	 * @throws XmpUnknownPropertyTypeException
-	 *             Value Type property is incorrect or the basic value type
-	 *             can't be treat at the moment
-	 * @throws XmpPropertyFormatException
-	 *             Unexpected type found (IllegalArgumentException)
-	 */
-	protected void parseAltProperty(XMPMetadata metadata, QName altName,
-			XmpPropertyType stype, ComplexPropertyContainer container)
-					throws XmpUnexpectedTypeException, XmpParsingException,
-					XMLStreamException, XmpUnknownPropertyTypeException,
-					XmpPropertyFormatException {
-		ComplexProperty alt = new ComplexProperty(metadata,
-				altName.getPrefix(), altName.getLocalPart(),
-				ComplexProperty.ALTERNATIVE_ARRAY);
-		container.addProperty(alt);
-		// <rdf:Alt>
-		expectNextSpecificTag(XMLStreamReader.START_ELEMENT, "Alt",
-				"Expected Alt Declaration");
-		int elmtType = reader.get().nextTag();
-		while (!((elmtType == XMLStreamReader.END_ELEMENT) && reader.get()
-				.getName().getLocalPart().equals("Alt"))) {
-			parseXmpSimpleProperty(metadata, reader.get().getName(), stype, alt
-					.getContainer());
-			elmtType = reader.get().nextTag();
-
-		}
-		// <dc:description><rdf:Alt><rdf:li>sujet</rdf:li></rdf:Alt></dc:description>
-		expectNextSpecificTag(XMLStreamReader.END_ELEMENT, altName
-				.getLocalPart(), "Expected end of alt property");
-
-	}
-
-	/**
-	 * Create a property in a specified container (complexproperty or schema)
-	 * 
-	 * @param metadata
-	 *            Metadata to attach new elements
-	 * @param type
-	 *            type of value contained in the property
-	 * @param container
-	 *            the entity where place the property representation
-	 * @return True if property has been treated (according to its type)
-	 * @throws XmpParsingException
-	 *             When element expected not found
-	 * @throws XmpUnexpectedTypeException
-	 *             When DOM Element type found unexpected
-	 * @throws XmpUnknownPropertyTypeException
-	 *             Value Type property is incorrect or the basic value type
-	 *             can't be treat at the moment
-	 * @throws XmpPropertyFormatException
-	 *             Unexpected type found (IllegalArgumentException)
-	 * @throws XMLStreamException
-	 *             When error during reading the rest of xmp stream
-	 */
-	private boolean createAndAddPropertyToContainer(XMPMetadata metadata,
-			String type, ComplexPropertyContainer container)
-					throws XmpParsingException, XmpUnexpectedTypeException,
-					XmpUnknownPropertyTypeException, XmpPropertyFormatException,
-					XMLStreamException {
-		if (type.equals("Text")) {
-			parseXmpSimpleProperty(metadata, reader.get().getName(),
-					XmpPropertyType.Text, container);
-		} else if (type.equals("Integer")) {
-			parseXmpSimpleProperty(metadata, reader.get().getName(),
-					XmpPropertyType.Integer, container);
-
-		} else if (type.equals("Boolean")) {
-			parseXmpSimpleProperty(metadata, reader.get().getName(),
-					XmpPropertyType.Boolean, container);
-
-		} else if (type.equals("Real")) {
-			parseXmpSimpleProperty(metadata, reader.get().getName(),
-					XmpPropertyType.Real, container);
-		} else if (type.equals("Date")) {
-			parseXmpSimpleProperty(metadata, reader.get().getName(),
-					XmpPropertyType.Date, container);
-
-		} else if (type.equals("URI")) {
-			parseXmpSimpleProperty(metadata, reader.get().getName(),
-					XmpPropertyType.Text, container);
-
-		} else if (type.equals("URL")) {
-			parseXmpSimpleProperty(metadata, reader.get().getName(),
-					XmpPropertyType.Text, container);
-
-		} else if (type.equals("bag Text")) {
-			parseBagProperty(metadata, reader.get().getName(),
-					XmpPropertyType.Text, container);
-		} else if (type.equals("bag ProperName")) {
-			parseBagProperty(metadata, reader.get().getName(),
-					XmpPropertyType.Text, container);
-		} else if (type.equals("bag Job")) {
-			parseBagProperty(metadata, reader.get().getName(),
-					XmpPropertyType.Text, container);
-		} else if (type.equals("bag Xpath")) {
-			parseBagProperty(metadata, reader.get().getName(),
-					XmpPropertyType.Text, container);
-		} else if (type.equals("seq Text")) {
-			parseSeqProperty(metadata, reader.get().getName(),
-					XmpPropertyType.Text, container);
-		} else if (type.equals("seq Field")) {
-			parseSeqProperty(metadata, reader.get().getName(),
-					XmpPropertyType.Text, container);
-		} else if (type.equals("seq Date")) {
-			parseSeqProperty(metadata, reader.get().getName(),
-					XmpPropertyType.Date, container);
-		} else if (type.equals("Lang Alt")) {
-			parseAltProperty(metadata, reader.get().getName(),
-					XmpPropertyType.Text, container);
-		} else {
-			return false;
-		}
-		return true;
-	}
-
-	/**
-	 * Parse a specific field
-	 * 
-	 * @param metadata
-	 *            Metadata to attach new elements
-	 * @param propertyName
-	 *            the full qualified name of this property
-	 * @param schema
-	 *            The schema where save this property
-	 * @throws XmpUnexpectedTypeException
-	 *             When DOM Element type found unexpected
-	 * @throws XmpParsingException
-	 *             When element expected not found
-	 * @throws XMLStreamException
-	 *             When error during reading the rest of xmp stream
-	 * @throws XmpUnknownPropertyTypeException
-	 *             Value Type property is incorrect or the basic value type
-	 *             can't be treat at the moment
-	 * @throws XmpPropertyFormatException
-	 *             Unexpected type found (IllegalArgumentException)
-	 */
-	protected void parseFieldProperty(XMPMetadata metadata, QName propertyName,
-			XMPSchema schema) throws XmpUnexpectedTypeException,
-			XmpPropertyFormatException, XmpParsingException,
-			XMLStreamException, XmpUnknownPropertyTypeException {
-		ComplexPropertyContainer field = new ComplexPropertyContainer(metadata,
-				propertyName.getPrefix(), propertyName.getLocalPart());
-		schema.addProperty(field);
-		field.setAttribute(new Attribute(null, "rdf", "parseType", "Resource"));
-		String type;
-		int elmtType = reader.get().nextTag();
-		while ((elmtType != XMLStreamReader.END_ELEMENT)
-				&& !reader.get().getName().getLocalPart().equals("Seq")) {
-
-			type = getPropertyDeclarationInNamespaces(schema, reader.get()
-					.getName());
-			if (!createAndAddPropertyToContainer(metadata, type, field)) {
-				if (type.equals("Field")) {
-					String stype = getPropertyDeclarationInNamespaces(schema,
-							reader.get().getName());
-					createAndAddPropertyToContainer(metadata, stype, field);
-				} else {
-					throw new XmpUnknownPropertyTypeException("Unknown type : "
-							+ type);
-				}
-			}
-			elmtType = reader.get().nextTag();
-		}
-		expectCurrentLocalName(propertyName.getLocalPart());
-
-		// expectNextSpecificTag(XMLStreamReader.END_ELEMENT,
-		// propertyName.getLocalPart(), "Expected end of field declaration");
-
-	}
-
-	/**
-	 * analyze one property in the stream, retrieve its type according to the
-	 * schema information and call its object representation building
-	 * 
-	 * @param schema
-	 *            The schema where find information
-	 * @param metadata
-	 *            Metadata to attach new elements
-	 * @throws XmpParsingException
-	 *             When element expected not found
-	 * @throws XMPUnexpectedTypeException
-	 *             When DOM Element type found unexpected
-	 * @throws XMLStreamException
-	 *             When error during reading the rest of xmp stream
-	 * @throws XmpUnknownPropertyTypeException
-	 *             Value Type property is incorrect or the basic value type
-	 *             can't be treat at the moment
-	 * @throws XmpPropertyFormatException
-	 *             Unexpected type found (IllegalArgumentException)
-	 */
-	protected void parseProperty(XMPSchema schema, XMPMetadata metadata)
-			throws XmpParsingException, XmpPropertyFormatException,
-			XmpUnexpectedTypeException, XMLStreamException,
-			XmpUnknownPropertyTypeException {
-		QName propertyName = reader.get().getName();
-		nsMap.resetComplexBasicTypesDeclarationInPropertyLevel();
-		int cptNs = reader.get().getNamespaceCount();
-		for (int i = 0; i < cptNs; i++) {
-			if (nsMap.isComplexBasicTypes(reader.get().getNamespaceURI(i))) {
-				nsMap.setComplexBasicTypesDeclarationForLevelSchema(reader
-						.get().getNamespaceURI(i), reader.get()
-						.getNamespacePrefix(i));
-			}
-		}
-		String type = getPropertyDeclarationInNamespaces(schema, propertyName);
-		if (type.equals("Unmanaged")) {
-			// do not parse the property, no validation, no reserialization
-			boolean cont = true;
-			while (cont) {
-				int t = reader.get().next();
-				if (t==XMLStreamReader.END_ELEMENT) {
-					if (propertyName.equals(reader.get().getName())) {
-						cont = false;
-					}
-				}
-			}
-		} else if (type.equals("Text")) {
-			parseXmpSimpleProperty(metadata, propertyName, 
-					XmpPropertyType.Text, schema.getContent());
-
-		} else if (type.equals("Integer")) {
-			parseXmpSimpleProperty(metadata, propertyName,
-					XmpPropertyType.Integer, schema.getContent());
-
-		} else if (type.equals("Boolean")) {
-			parseXmpSimpleProperty(metadata, propertyName,
-					XmpPropertyType.Boolean, schema.getContent());
-
-		} else if (type.equals("Real")) {
-			parseXmpSimpleProperty(metadata, propertyName,
-					XmpPropertyType.Real, schema.getContent());
-		} else if (type.equals("Date")) {
-			parseXmpSimpleProperty(metadata, propertyName,
-					XmpPropertyType.Date, schema.getContent());
-
-		} else if (type.equals("URI")) {
-			parseXmpSimpleProperty(metadata, propertyName,
-					XmpPropertyType.Text, schema.getContent());
-
-		} else if (type.equals("URL")) {
-			parseXmpSimpleProperty(metadata, propertyName,
-					XmpPropertyType.Text, schema.getContent());
-
-		} else if (type.equals("bag Text")) {
-			parseBagProperty(metadata, propertyName, XmpPropertyType.Text,
-					schema.getContent());
-		} else if (type.equals("bag ProperName")) {
-			parseBagProperty(metadata, propertyName, XmpPropertyType.Text,
-					schema.getContent());
-		} else if (type.equals("bag Job")) {
-			parseBagProperty(metadata, propertyName, XmpPropertyType.Text,
-					schema.getContent());
-		} else if (type.equals("bag Xpath")) {
-			parseBagProperty(metadata, propertyName, XmpPropertyType.Text,
-					schema.getContent());
-		} else if (type.equals("seq Text")) {
-			parseSeqProperty(metadata, propertyName, XmpPropertyType.Text,
-					schema.getContent());
-		} else if (type.equals("seq Date")) {
-			parseSeqProperty(metadata, propertyName, XmpPropertyType.Date,
-					schema.getContent());
-		} else if (type.equals("Lang Alt")) {
-			parseAltProperty(metadata, propertyName, XmpPropertyType.Text,
-					schema.getContent());
-		} else if (type.equals("Field")) {
-			parseFieldProperty(metadata, propertyName, schema);
-		} else if (type.equals("Thumbnail")) {
-			parseThumbnailProperty(metadata, propertyName, schema.getContent());
-		} else if (type.equals("Alt Thumbnail")) {
-			parseAltThumbnailProperty(metadata, propertyName, schema
-					.getContent());
-		} else {
-			System.out.println(reader.get().getName().getLocalPart()
-					+ " de type " + type);
-			throw new XmpUnknownPropertyTypeException("Unknown type : " + type);
-		}
-
-	}
-
-	/**
-	 * Treat Alternative Thumbnails property
-	 * 
-	 * @param metadata
-	 *            Metadata to attach new elements
-	 * @param altName
-	 *            name of thumbnails alternative property
-	 * @param container
-	 *            the container where record this representation
-	 * @throws XmpUnexpectedTypeException
-	 *             When DOM Element type found unexpected
-	 * @throws XmpParsingException
-	 *             When element expected not found
-	 * @throws XMLStreamException
-	 *             When error during reading the rest of xmp stream
-	 * @throws XmpUnknownPropertyTypeException
-	 *             Value Type property is incorrect or the basic value type
-	 *             can't be treat at the moment
-	 * @throws XmpPropertyFormatException
-	 *             Unexpected type found (IllegalArgumentException)
-	 */
-	private void parseAltThumbnailProperty(XMPMetadata metadata, QName altName,
-			ComplexPropertyContainer container)
-					throws XmpUnexpectedTypeException, XmpParsingException,
-					XMLStreamException, XmpUnknownPropertyTypeException,
-					XmpPropertyFormatException {
-		ComplexProperty alt = new ComplexProperty(metadata,
-				altName.getPrefix(), altName.getLocalPart(),
-				ComplexProperty.ALTERNATIVE_ARRAY);
-		container.addProperty(alt);
-		// <rdf:Alt>
-		expectNextSpecificTag(XMLStreamReader.START_ELEMENT, "Alt",
-				"Expected Alt Declaration");
-		int elmtType = reader.get().nextTag();
-		while (!((elmtType == XMLStreamReader.END_ELEMENT) && reader.get()
-				.getName().getLocalPart().equals("Alt"))) {
-			parseThumbnailProperty(metadata, reader.get().getName(), alt
-					.getContainer());
-			elmtType = reader.get().nextTag();
-		}
-
-		// <dc:description><rdf:Alt><rdf:li>sujet</rdf:li></rdf:Alt></dc:description>
-		expectNextSpecificTag(XMLStreamReader.END_ELEMENT, altName
-				.getLocalPart(), "Expected end of alt property");
-	}
-
-	/**
-	 * * Treat a thumbnail property
-	 * 
-	 * @param metadata
-	 *            Metadata to attach new elements
-	 * @param altName
-	 *            name of thumbnail property
-	 * @param container
-	 *            The container where save property representation
-	 * @throws XmpUnexpectedTypeException
-	 *             When DOM Element type found unexpected
-	 * @throws XmpParsingException
-	 *             When element expected not found
-	 * @throws XMLStreamException
-	 *             When error during reading the rest of xmp stream
-	 * @throws XmpUnknownPropertyTypeException
-	 *             Value Type property is incorrect or the basic value type
-	 *             can't be treat at the moment
-	 * @throws XmpPropertyFormatException
-	 *             Unexpected type found (IllegalArgumentException)
-	 */
-	private void parseThumbnailProperty(XMPMetadata metadata, QName altName,
-			ComplexPropertyContainer container)
-					throws XmpUnexpectedTypeException, XmpParsingException,
-					XMLStreamException, XmpUnknownPropertyTypeException,
-					XmpPropertyFormatException {
-		expectCurrentLocalName("li");
-		ThumbnailType thumbnail = new ThumbnailType(metadata, altName
-				.getPrefix(), altName.getLocalPart());
-		int elmtType = reader.get().nextTag();
-		QName eltName;
-		String eltContent;
-		while (!((elmtType == XMLStreamReader.END_ELEMENT) && reader.get()
-				.getName().getLocalPart().equals("li"))) {
-			eltName = reader.get().getName();
-			eltContent = reader.get().getElementText();
-			if (eltName.getLocalPart().equals("height")) {
-				thumbnail.setHeight(eltName.getPrefix(),
-						eltName.getLocalPart(), Integer.valueOf(eltContent));
-			} else if (eltName.getLocalPart().equals("width")) {
-				thumbnail.setWidth(eltName.getPrefix(), eltName.getLocalPart(),
-						Integer.valueOf(eltContent));
-			} else if (eltName.getLocalPart().equals("image")) {
-				thumbnail.setImg(eltName.getPrefix(), eltName.getLocalPart(),
-						eltContent);
-			} else if (eltName.getLocalPart().equals("format")) {
-				thumbnail.setFormat(eltName.getPrefix(),
-						eltName.getLocalPart(), eltContent);
-			} else {
-				throw new XmpParsingException(
-						"Unknown property name for a thumbnail element : "
-								+ eltName.getLocalPart());
-			}
-			elmtType = reader.get().nextTag();
-		}
-		container.addProperty(thumbnail);
-	}
+    protected List<XMPDocumentPreprocessor> preprocessors = new ArrayList<XMPDocumentPreprocessor>();
 
+    /**
+     * Constructor of a XMPDocumentBuilder
+     * 
+     * @throws XmpSchemaException
+     *             When instancing schema object failed or in PDF/A Extension
+     *             case, if its namespace miss
+     */
+    public XMPDocumentBuilder() throws XmpSchemaException {
+        nsMap = new NSMapping();
+    }
+
+    /**
+     * Parsing method. Return a XMPMetadata object with all elements read
+     * 
+     * @param xmp
+     *            serialized XMP
+     * @return Metadata with all information read
+     * @throws XmpParsingException
+     *             When element expected not found
+     * @throws XmpSchemaException
+     *             When instancing schema object failed or in PDF/A Extension
+     *             case, if its namespace miss
+     * @throws XmpUnknownValueTypeException
+     *             When ValueType found not correspond to basic type and not has
+     *             been declared in current schema
+     * @throws XmpExpectedRdfAboutAttribute
+     *             When rdf:Description not contains rdf:about attribute
+     * @throws XmpXpacketEndException
+     *             When xpacket end Processing Instruction is missing or is
+     *             incorrect
+     * @throws BadFieldValueException
+     *             When treat a Schema associed to a schema Description in PDF/A
+     *             Extension schema
+     */
+
+    public XMPMetadata parse(byte[] xmp) throws XmpParsingException,
+    XmpSchemaException, XmpUnknownValueTypeException,
+    XmpExpectedRdfAboutAttribute, XmpXpacketEndException,
+    BadFieldValueException {
+
+        if (!(this instanceof XMPDocumentPreprocessor)) {
+            for (XMPDocumentPreprocessor processor : preprocessors) {
+                NSMapping additionalNSMapping = processor.process(xmp);
+                this.nsMap.importNSMapping(additionalNSMapping);				
+            }
+        }
+
+        ByteArrayInputStream is = new ByteArrayInputStream(xmp);
+        try {
+            XMLInputFactory factory = XMLInputFactory.newInstance();
+            reader.set(factory.createXMLStreamReader(is));
+
+            // expect xpacket processing instruction
+            expectNext(XMLStreamReader.PROCESSING_INSTRUCTION,
+            "Did not find initial xpacket processing instruction");
+            XMPMetadata metadata = parseInitialXpacket(reader.get().getPIData());
+
+            // expect x:xmpmeta
+            expectNextTag(XMLStreamReader.START_ELEMENT,
+            "Did not find initial x:xmpmeta");
+            expectName("adobe:ns:meta/", "xmpmeta");
+
+            // expect rdf:RDF
+            expectNextTag(XMLStreamReader.START_ELEMENT,
+            "Did not find initial rdf:RDF");
+            expectName("http://www.w3.org/1999/02/22-rdf-syntax-ns#", "RDF");
+
+            nsMap.resetComplexBasicTypesDeclarationInEntireXMPLevel();
+            // add all namespaces which could declare nsURI of a basicValueType
+            // all others declarations are ignored
+            int nsCount = reader.get().getNamespaceCount();
+            for (int i = 0; i < nsCount; i++) {
+                if (nsMap.isComplexBasicTypes(reader.get().getNamespaceURI(i))) {
+                    nsMap.setComplexBasicTypesDeclarationForLevelXMP(
+                            reader.get().getNamespaceURI(i), 
+                            reader.get().getNamespacePrefix(i));
+                }
+            }
+
+            // now work on each rdf:Description
+            int type = reader.get().nextTag();
+            while (type == XMLStreamReader.START_ELEMENT) {
+                parseDescription(metadata);
+                type = reader.get().nextTag();
+            }
+
+            // all description are finished
+            // expect end of rdf:RDF
+            expectType(XMLStreamReader.END_ELEMENT,
+            "Expected end of descriptions");
+            expectName("http://www.w3.org/1999/02/22-rdf-syntax-ns#", "RDF");
+
+            // expect ending xmpmeta
+            expectNextTag(XMLStreamReader.END_ELEMENT,
+            "Did not find initial x:xmpmeta");
+            expectName("adobe:ns:meta/", "xmpmeta");
+
+            // expect final processing instruction
+            expectNext(XMLStreamReader.PROCESSING_INSTRUCTION,
+            "Did not find final xpacket processing instruction");
+            // treats xpacket end
+            if (!reader.get().getPITarget().equals("xpacket")) {
+                throw new XmpXpacketEndException("Excepted PI xpacket");
+            }
+            String xpackData = reader.get().getPIData();
+            // end attribute must be present and placed in first
+            // xmp spec says Other unrecognized attributes can follow, but
+            // should be ignored
+            if (xpackData.startsWith("end=")) {
+                // check value (5 for end='X')
+                if (xpackData.charAt(5)!='r' && xpackData.charAt(5)!='w') {
+                    throw new XmpXpacketEndException(
+                    "Excepted xpacket 'end' attribute with value 'r' or 'w' ");
+                }
+            } else {
+                // should find end='r/w'
+                throw new XmpXpacketEndException(
+                "Excepted xpacket 'end' attribute (must be present and placed in first)");
+            }
+
+            metadata.setEndXPacket(xpackData);
+            // return constructed object
+            return metadata;
+        } catch (XMLStreamException e) {
+            throw new XmpParsingException("An error has occured when processing the underlying XMP source", e);
+        } finally {
+            reader.remove();
+            IOUtils.closeQuietly(is);
+        }
+    }
+
+    /**
+     * Parsing method using serialized xmp read from a stream
+     * 
+     * @param is
+     *            The stream to read
+     * @return Metadata with all information read
+     * @throws XmpParsingException
+     *             When element expected not found When element expected not
+     *             found
+     * @throws XmpSchemaException
+     *             When instancing schema object failed or in PDF/A Extension
+     *             case, if its namespace miss
+     * @throws XmpUnknownValueTypeException
+     *             When ValueType found not correspond to basic type and not has
+     *             been declared in current schema
+     * @throws XmpExpectedRdfAboutAttribute
+     *             When rdf:Description not contains rdf:about attribute
+     * @throws XmpXpacketEndException
+     *             When xpacket end Processing Instruction is missing or is
+     *             incorrect
+     * @throws BadFieldValueException
+     *             When treat a Schema associed to a schema Description in PDF/A
+     *             Extension schema
+     */
+    public XMPMetadata parse(InputStream input) throws XmpParsingException,
+    XmpSchemaException, XmpUnknownValueTypeException,
+    XmpExpectedRdfAboutAttribute, XmpXpacketEndException,
+    BadFieldValueException {
+
+        byte[] bos = getStreamAsByteArray(input);
+        return parse(bos);
+    }
+
+    private byte[] getStreamAsByteArray(InputStream input) throws XmpParsingException {
+        ByteArrayOutputStream bos = new ByteArrayOutputStream();
+        try {
+            IOUtils.copyLarge(input, bos);
+        } catch (IOException e) {
+            throw new XmpParsingException("An error has occured when processing the underlying XMP source", e);
+        } finally {
+            IOUtils.closeQuietly(bos);
+            IOUtils.closeQuietly(input);
+        }
+        return bos.toByteArray();
+    }
+
+    public void addPreprocessor(XMPDocumentPreprocessor processor) {
+        this.preprocessors.add(processor);
+    }
+
+    /**
+     * Check InitialXPacket and build metadata object with these information
+     * 
+     * @param data
+     *            data corresponding to Initial XPacket Processing Instruction
+     *            Processing Information corresponding to Inital XPacket data
+     * @return Metadata with specified information
+     * @throws XmpInitialXPacketParsingException
+     *             When Initial XPacket missing or is incorrect
+     * @throws CreateXMPMetadataException
+     *             If DOM Document associated could not be created
+     */
+    protected XMPMetadata parseInitialXpacket(String data)
+    throws XmpInitialXPacketParsingException,
+    CreateXMPMetadataException {
+        StringTokenizer tokens = new StringTokenizer(data, " ");
+        String id = null;
+        String begin = null;
+        String bytes = null;
+        String encoding = null;
+        while (tokens.hasMoreTokens()) {
+            String token = tokens.nextToken();
+            if (!token.endsWith("\"") && !token.endsWith("\'")) {
+                throw new XmpInitialXPacketParsingException(
+                        "Cannot understand PI data part : '" + token + "'");
+            }
+            String quote = token.substring(token.length()-1);
+            int pos = token.indexOf("="+quote);
+            if (pos <= 0) {
+                throw new XmpInitialXPacketParsingException(
+                        "Cannot understand PI data part : '" + token + "'");
+            }
+            String name = token.substring(0, pos);
+            String value = token.substring(pos + 2, token.length() - 1);
+            if ("id".equals(name)) {
+                id = value;
+            } else if ("begin".equals(name)) {
+                begin = value;
+            } else if ("bytes".equals(name)) {
+                bytes = value;
+            } else if ("encoding".equals(name)) {
+                encoding = value;
+            } else {
+                throw new XmpInitialXPacketParsingException(
+                        "Unknown attribute in xpacket PI : '" + token + "'");
+            }
+        }
+        return new XMPMetadata(begin, id, bytes, encoding);
+    }
+
+    /**
+     * Check the next element type. all comments are ignored.
+     * 
+     * @param expectType
+     *            Type of xml element expected
+     * @param message
+     *            Error message if problems occur
+     * @throws XmpParsingException
+     *             When element expected not found
+     * @throws XmpUnexpectedTypeException
+     *             When DOM Element type found unexpected When DOM Element type
+     *             found unexpected
+     * @throws XMLStreamException
+     *             When error during reading the rest of xmp stream When error
+     *             during reading the rest of xmp stream
+     */
+    private void expectNext(int expectType, String message)
+    throws XmpParsingException, XmpUnexpectedTypeException,
+    XMLStreamException {
+        try {
+            int type = reader.get().next();
+            while (type == XMLStreamReader.COMMENT || type == XMLStreamReader.SPACE) {
+                type = reader.get().next();
+            }
+            if (type != expectType) {
+                throw new XmpUnexpectedTypeException(message);
+            }
+        } catch (NoSuchElementException e) {
+            // unexpected end of stream
+            throw new XmpParsingException(
+            "XMP Stream did not end in a good way, invalid content");
+        }
+    }
+
+    /**
+     * Check the next element type. White spaces , Comments and Processing
+     * Instructions are ignored.
+     * 
+     * @param type
+     *            Type of xml element expected
+     * @param message
+     *            Error message if problems occur
+     * @throws XmpParsingException
+     *             When element expected not found
+     * @throws XmpUnexpectedTypeException
+     *             When DOM Element type found unexpected
+     * @throws XMLStreamException
+     *             When error during reading the rest of xmp stream
+     */
+    private void expectNextTag(int type, String message)
+    throws XmpParsingException, XmpUnexpectedTypeException,
+    XMLStreamException {
+        try {
+            if (!(reader.get().nextTag() == type)) {
+                throw new XmpUnexpectedTypeException(message);
+            }
+        } catch (NoSuchElementException e) {
+            // unexpected end of stream
+            throw new XmpParsingException(
+            "XMP Stream did not end in a good way, invalid content");
+        }
+    }
+
+    /**
+     * check if qualified name of current element is what is expected
+     * 
+     * @param namespace
+     *            namespace URI
+     * @param name
+     *            current element name
+     * @throws XmpUnexpectedElementQualifiedNameException
+     *             When a qualifiedName found and is not that expected
+     * 
+     */
+    private void expectName(String namespace, String name)
+    throws XmpUnexpectedElementQualifiedNameException {
+        if (!reader.get().getNamespaceURI().equals(namespace)) {
+            throw new XmpUnexpectedElementQualifiedNameException("Expected '"
+                    + namespace + "' and found '"
+                    + reader.get().getNamespaceURI() + "'");
+        }
+        if (!reader.get().getLocalName().equals(name)) {
+            throw new XmpUnexpectedElementQualifiedNameException("Expected '"
+                    + name + "' and found '" + reader.get().getLocalName()
+                    + "'");
+        }
+    }
+
+    /**
+     * Check the current element type.
+     * 
+     * @param type
+     *            XML element type expected
+     * @param message
+     *            Error Message if problems occur
+     * @throws XmpUnexpectedTypeException
+     *             When DOM Element type found unexpected
+     */
+    private void expectType(int type, String message)
+    throws XmpUnexpectedTypeException {
+        if (!(type == reader.get().getEventType())) {
+            throw new XmpUnexpectedTypeException("Expected type " + type
+                    + " and found " + reader.get().getEventType() + " : "
+                    + message);
+        }
+    }
+
+    /**
+     * Check if rdf:about attribute is declared for rdf description and add all
+     * attributes to the schema
+     * 
+     * @param metadata
+     *            Metadata to attach new elements
+     * @param schema
+     *            Schema corresponding to the rdf:Description use
+     * @throws XmpExpectedRdfAboutAttribute
+     *             When rdf:Description not contains rdf:about attribute
+     * @throws XmpUnexpectedTypeException if the attribute is known 
+     * as an expected property but the property type isn't a Simple type.
+     */
+    protected final void treatDescriptionAttributes(XMPMetadata metadata, XMPSchema schema) 
+    throws XmpExpectedRdfAboutAttribute, XmpUnexpectedTypeException {
+        int cptAtt = reader.get().getAttributeCount();
+        int i = 0;
+        boolean rdfAboutFound = false;
+        String prefix;
+        while (i < cptAtt) {
+            if (reader.get().getAttributeLocalName(i).equals("about")) {
+                prefix = reader.get().getAttributePrefix(i);
+                if (prefix != null) {
+                    if (!prefix.equals("") && !prefix.equals("rdf")) {
+                        // System.out.println("prefix de l'attribut "+reader.get().getAttributeLocalName(i)+": "+prefix);
+                        throw new XmpExpectedRdfAboutAttribute(
+                        "An about attribute is present but have an invalid prefix (it must be 'rdf')");
+                    }
+                }
+                rdfAboutFound = true;
+            }
+
+            Attribute attr = new Attribute(null, reader.get()
+                    .getAttributePrefix(i), reader.get()
+                    .getAttributeLocalName(i), reader.get()
+                    .getAttributeValue(i));
+
+            if (!addAttributeAsProperty(metadata, schema, attr)) {
+                // attribute isn't a property, so add the attribute
+                schema.setAttribute(attr);	
+            }
+
+            i++;
+        }
+        if (!rdfAboutFound) {
+            // create rdf:about if not found
+            Attribute attr = new Attribute(null,"rdf","about","");
+            schema.setAttribute(attr);
+        }
+    }
+
+    /**
+     * If the attribute has same the name as an expected property of the Schema, then the property is created using the attributes fields.
+     * 
+     * @param metadata Metadata to attach new elements
+     * @param schema Schema corresponding to the rdf:Description use
+     * @param attr the attribute used to create the property
+     * @return true if the attribute has been converted into Property
+     */
+    private boolean addAttributeAsProperty(XMPMetadata metadata, XMPSchema schema, Attribute attr) {
+        boolean added = false;
+        String schemaNamespace = schema.getNamespaceValue();
+        String prefix = attr.getPrefix() != null ? attr.getPrefix() : schema.getPrefix();
+        String type = this.nsMap.getSpecifiedPropertyType(schemaNamespace, new QName(schemaNamespace, attr.getLocalName(), prefix));
+        if (type != null) {
+            if (type.equals("Text")) {
+                schema.getContent().addProperty(new TextType(metadata, prefix, attr.getLocalName(), attr.getValue()));
+                added = true;
+            } else if (type.equals("Integer")) {
+                schema.getContent().addProperty(new IntegerType(metadata, prefix, attr.getLocalName(), attr.getValue()));
+                added = true;
+            } else if (type.equals("Boolean")) {
+                schema.getContent().addProperty(new BooleanType(metadata, prefix, attr.getLocalName(), attr.getValue()));
+                added = true;
+            } else if (type.equals("Real")) {
+                schema.getContent().addProperty(new RealType(metadata, prefix, attr.getLocalName(), attr.getValue()));
+                added = true;
+            } else if (type.equals("Date")) {
+                schema.getContent().addProperty(new DateType(metadata, prefix, attr.getLocalName(), attr.getValue()));
+                added = true;
+            } else if (type.equals("URI")) {
+                schema.getContent().addProperty(new TextType(metadata, prefix, attr.getLocalName(), attr.getValue()));
+                added = true;
+            } else if (type.equals("URL")) {
+                schema.getContent().addProperty(new TextType(metadata, prefix, attr.getLocalName(), attr.getValue()));
+                added = true;
+            }
+        }
+        return added;
+    }
+
+    /**
+     * Treat each rdf:Description (which must represent a schema), instanciate
+     * class representation of this schema and add it to metadata
+     * 
+     * @param metadata
+     *            Metadata to attach new elements
+     * @throws XmpParsingException
+     *             When element expected not found
+     * @throws XMLStreamException
+     *             When error during reading the rest of xmp stream
+     * @throws XmpSchemaException
+     *             When instancing schema object failed or in PDF/A Extension
+     *             case, if its namespace miss
+     * @throws XmpUnknownValueTypeException
+     *             When ValueType found not correspond to basic type and not has
+     *             been declared in current schema
+     * @throws XmpExpectedRdfAboutAttribute
+     *             When rdf:Description not contains rdf:about attribute
+     * @throws BadFieldValueException
+     *             When a bad value found in Schema description content
+     */
+    protected void parseDescription(XMPMetadata metadata)
+    throws XmpParsingException, XMLStreamException, XmpSchemaException,
+    XmpUnknownValueTypeException, XmpExpectedRdfAboutAttribute,
+    BadFieldValueException {
+        nsMap.resetComplexBasicTypesDeclarationInSchemaLevel();
+        int cptNS = reader.get().getNamespaceCount();
+        HashMap<String, String> namespaces = new HashMap<String, String>();
+        for (int i = 0; i < cptNS; i++) {
+            namespaces.put(reader.get().getNamespacePrefix(i), reader.get()
+                    .getNamespaceURI(i));
+            if (nsMap.isComplexBasicTypes(reader.get().getNamespaceURI(i))) {
+                // System.out.println("in parseDesc method: prefix:"+reader.get().getNamespacePrefix(i)+", nsURI:"+reader.get().getNamespaceURI(i));
+                nsMap.setComplexBasicTypesDeclarationForLevelSchema(reader
+                        .get().getNamespaceURI(i), reader.get()
+                        .getNamespacePrefix(i));
+            }
+        }
+        // Different treatment for PDF/A Extension schema
+        // System.out.println(PDFAExtensionSchema.PDFAEXTENSION+";"+PDFAExtensionSchema.PDFAPROPERTY+";"+PDFAExtensionSchema.PDFASCHEMA);
+        if (namespaces.containsKey(PDFAExtensionSchema.PDFAEXTENSION)) {
+            if (namespaces.containsKey(PDFAExtensionSchema.PDFAPROPERTY)
+                    && namespaces.containsKey(PDFAExtensionSchema.PDFASCHEMA)) {
+                if (namespaces
+                        .containsValue(PDFAExtensionSchema.PDFAEXTENSIONURI)
+                        && namespaces
+                        .containsValue(PDFAExtensionSchema.PDFAPROPERTYURI)
+                        && namespaces
+                        .containsValue(PDFAExtensionSchema.PDFASCHEMAURI)) {
+                    PDFAExtensionSchema schema = metadata
+                    .createAndAddPDFAExtensionSchemaWithNS(namespaces);
+                    treatDescriptionAttributes(metadata, schema);
+                    parseExtensionSchema(schema, metadata);
+
+                } else {
+                    throw new XmpUnexpectedNamespaceURIException(
+                    "Unexpected namespaceURI in PDFA Extension Schema encountered");
+                }
+            } else {
+                throw new XmpUnexpectedNamespacePrefixException(
+                "Unexpected namespace Prefix in PDFA Extension Schema");
+            }
+
+        } else {
+            int c = 0;
+            String namespaceUri = reader.get().getNamespaceURI(c);
+            String namespacePrefix = reader.get().getNamespacePrefix(c);
+            c++;
+            XMPSchema schema = nsMap.getAssociatedSchemaObject(metadata, namespaceUri, namespacePrefix);
+            while (c<reader.get().getNamespaceCount() && schema==null) {
+                // try next
+                namespaceUri = reader.get().getNamespaceURI(c);
+                namespacePrefix = reader.get().getNamespacePrefix(c);
+                schema = nsMap.getAssociatedSchemaObject(metadata, namespaceUri, namespacePrefix);
+                c++;
+            }
+            
+            if (schema != null) {
+                namespaces.remove(namespacePrefix);
+            } else {
+                schema = metadata.createAndAddDefaultSchema(namespacePrefix,namespaceUri);
+            }
+            
+            for (int i = 1; i < cptNS; i++) {
+                schema.setAttribute(new Attribute(XMPSchema.NS_NAMESPACE,
+                        "xmlns", reader.get().getNamespacePrefix(i), reader.get().getNamespaceURI(i)));
+            }
+            treatDescriptionAttributes(metadata, schema);
+            while (reader.get().nextTag() == XMLStreamReader.START_ELEMENT) {
+                parseProperty(schema, metadata);
+            }
+        }
+
+    }
+
+    /**
+     * Check the next element type and its expected value
+     * 
+     * @param type
+     *            expected type of xml element
+     * @param localNameExpected
+     *            The property name (local) expected
+     * @param message
+     *            Error message if problems occur
+     * @throws XmpUnexpectedTypeException
+     *             When DOM Element type found unexpected
+     * @throws XmpParsingException
+     *             When element expected not found
+     * @throws XMLStreamException
+     *             When error during reading the rest of xmp stream
+     */
+    private void expectNextSpecificTag(int type, String localNameExpected,
+            String message) throws XmpUnexpectedTypeException,
+            XmpParsingException, XMLStreamException {
+        expectNextTag(type, message);
+        expectCurrentLocalName(localNameExpected);
+    }
+
+    /**
+     * check that the current local name is that expected
+     * 
+     * @param localNameExpected
+     *            The name expected
+     * @throws XmpUnexpectedElementException
+     *             When Element is not that expected
+     */
+    protected void expectCurrentLocalName(String localNameExpected)
+    throws XmpUnexpectedElementException {
+        if (!reader.get().getLocalName().equals(localNameExpected)) {
+            throw new XmpUnexpectedElementException("'" + localNameExpected
+                    + "' expected and '" + reader.get().getLocalName()
+                    + "' found at "+reader.get().getLocation());
+        }
+    }
+
+    /**
+     * Treat a PDFAExtension schema
+     * 
+     * @param schema
+     *            PDFA/Extension schema where save information found
+     * @param metadata
+     *            Metadata to attach new elements
+     * @throws XmpParsingException
+     *             When element expected not found
+     * @throws XMLStreamException
+     *             When error during reading the rest of xmp stream
+     * @throws XmpUnknownValueTypeException
+     *             When ValueType found not correspond to basic type and not has
+     *             been declared in current schema
+     * @throws BadFieldValueException
+     *             When one of a field property include to describe a property
+     *             in Schema Description contain an incorrect value
+     */
+    protected final void parseExtensionSchema(PDFAExtensionSchema schema,
+            XMPMetadata metadata) throws XmpParsingException,
+            XMLStreamException, XmpUnknownValueTypeException,
+            BadFieldValueException {
+        // <pdfaExtension:schemas>
+        expectNextSpecificTag(XMLStreamReader.START_ELEMENT, "schemas",
+        "Cannot find container declaration of schemas descriptions ");
+        // <rdf:Bag>
+        expectNextSpecificTag(XMLStreamReader.START_ELEMENT, "Bag",
+        "Cannot find bag declaration for container of schemas descriptions");
+        // now work on each rdf:li corresponding to each schema description
+        int type = reader.get().nextTag();
+        while (type == XMLStreamReader.START_ELEMENT) {
+            parseSchemaDescription(schema, metadata);
+            type = reader.get().nextTag();
+        }
+        expectNextSpecificTag(XMLStreamReader.END_ELEMENT, "schemas",
+        "Cannot find end of container declaration in schemas descriptions ");
+        expectNextSpecificTag(XMLStreamReader.END_ELEMENT, "Description",
+        "Cannot find end of PDF/A Extension definition ");
+
+    }
+
+    /**
+     * Treat one Schema description defined in the extension Schema found
+     * 
+     * @param schema
+     *            PDFA/Extension schema where save information found
+     * @param metadata
+     *            Metadata to attach new elements
+     * @throws XMLStreamException
+     *             When error during reading the rest of xmp stream
+     * @throws XmpParsingException
+     *             When element expected not found
+     * @throws XmpUnknownValueTypeException
+     *             When ValueType found not correspond to basic type and not has
+     *             been declared in current schema
+     * @throws BadFieldValueException
+     *             When one of a field property contain an incorrect value
+     */
+    private void parseSchemaDescription(PDFAExtensionSchema schema,
+            XMPMetadata metadata) throws XMLStreamException,
+            XmpParsingException, XmpUnknownValueTypeException,
+            BadFieldValueException {
+        expectCurrentLocalName("li");
+        SchemaDescription desc = schema.createSchemaDescription();
+        int type = reader.get().nextTag();
+        while (type == XMLStreamReader.START_ELEMENT) {
+            if (reader.get().getLocalName().equals("schema")
+                    || reader.get().getLocalName().equals("namespaceURI")
+                    || reader.get().getLocalName().equals("prefix")) {
+                try {
+                    // System.out.println(reader.get().getPrefix()+";"+reader.get().getLocalName()+";"+reader.get().getElementText());
+                    desc.addProperty(new TextType(metadata, reader.get()
+                            .getPrefix(), reader.get().getLocalName(), reader
+                            .get().getElementText()));
+                } catch (IllegalArgumentException e) {
+                    throw new XmpPropertyFormatException(
+                            "Unexpected value for '"
+                            + reader.get().getLocalName()
+                            + "' property");
+                }
+            } else if (reader.get().getLocalName().equals("property")) {
+                parsePropertyDefinition(desc);
+            } else if (reader.get().getLocalName().equals("valueType")) {
+                parseValueTypeDefinition(desc, metadata);
+
+            } else {
+                throw new XmpUnexpectedElementException(
+                "Unexpected property definition in one of PDF/A Extension schemas description");
+            }
+            type = reader.get().nextTag();
+        }
+        schema.addSchemaDescription(desc);
+        nsMap.setNamespaceDefinition(desc);
+
+    }
+
+    /**
+     * Treat value type definition for a specific Schema Description
+     * 
+     * @param desc
+     *            the current Schema Description analyzed
+     * @param metadata
+     *            Metadata to attach new elements
+     * @throws XmpParsingException
+     *             When element expected not found
+     * @throws XMLStreamException
+     *             When error during reading the rest of xmp stream
+     */
+    private void parseValueTypeDefinition(SchemaDescription desc,
+            XMPMetadata metadata) throws XmpParsingException,
+            XMLStreamException {
+        // <rdf:Seq>
+        expectNextSpecificTag(XMLStreamReader.START_ELEMENT, "Seq",
+        "Expected Seq Declaration");
+        int elmtType = reader.get().nextTag();
+        String type, namespaceURI, prefix, description;
+        List<PDFAFieldDescription> fields;
+        while (elmtType == XMLStreamReader.START_ELEMENT) {
+            type = null;
+            namespaceURI = null;
+            prefix = null;
+            description = null;
+            fields = null;
+            expectCurrentLocalName("li");
+            elmtType = reader.get().nextTag();
+            while (elmtType == XMLStreamReader.START_ELEMENT) {
+                if (reader.get().getLocalName().equals("type")) {
+                    type = reader.get().getElementText();
+                } else if (reader.get().getLocalName().equals("namespaceURI")) {
+                    namespaceURI = reader.get().getElementText();
+                } else if (reader.get().getLocalName().equals("prefix")) {
+                    prefix = reader.get().getElementText();
+                } else if (reader.get().getLocalName().equals("description")) {
+                    description = reader.get().getElementText();

[... 798 lines stripped ...]


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