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From z..@apache.org
Subject svn commit: r1075139 [12/23] - in /aries/tags/blueprint-0.2-incubating: ./ blueprint-annotation-api/ blueprint-annotation-api/src/ blueprint-annotation-api/src/main/ blueprint-annotation-api/src/main/java/ blueprint-annotation-api/src/main/java/org/ bl...
Date Sun, 27 Feb 2011 20:35:49 GMT
Added: aries/tags/blueprint-0.2-incubating/blueprint-core/src/main/java/org/apache/aries/blueprint/container/Parser.java
URL: http://svn.apache.org/viewvc/aries/tags/blueprint-0.2-incubating/blueprint-core/src/main/java/org/apache/aries/blueprint/container/Parser.java?rev=1075139&view=auto
==============================================================================
--- aries/tags/blueprint-0.2-incubating/blueprint-core/src/main/java/org/apache/aries/blueprint/container/Parser.java (added)
+++ aries/tags/blueprint-0.2-incubating/blueprint-core/src/main/java/org/apache/aries/blueprint/container/Parser.java Sun Feb 27 20:35:36 2011
@@ -0,0 +1,1352 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.aries.blueprint.container;
+
+import java.io.InputStream;
+import java.net.URI;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Set;
+
+import javax.xml.XMLConstants;
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.transform.dom.DOMSource;
+import javax.xml.validation.Schema;
+import javax.xml.validation.Validator;
+import org.apache.aries.blueprint.ComponentDefinitionRegistry;
+import org.apache.aries.blueprint.NamespaceHandler;
+import org.apache.aries.blueprint.reflect.BeanArgumentImpl;
+import org.apache.aries.blueprint.reflect.BeanMetadataImpl;
+import org.apache.aries.blueprint.reflect.BeanPropertyImpl;
+import org.apache.aries.blueprint.reflect.CollectionMetadataImpl;
+import org.apache.aries.blueprint.reflect.IdRefMetadataImpl;
+import org.apache.aries.blueprint.reflect.MapEntryImpl;
+import org.apache.aries.blueprint.reflect.MapMetadataImpl;
+import org.apache.aries.blueprint.reflect.MetadataUtil;
+import org.apache.aries.blueprint.reflect.PropsMetadataImpl;
+import org.apache.aries.blueprint.reflect.RefMetadataImpl;
+import org.apache.aries.blueprint.reflect.ReferenceListMetadataImpl;
+import org.apache.aries.blueprint.reflect.ReferenceListenerImpl;
+import org.apache.aries.blueprint.reflect.ReferenceMetadataImpl;
+import org.apache.aries.blueprint.reflect.RegistrationListenerImpl;
+import org.apache.aries.blueprint.reflect.ServiceMetadataImpl;
+import org.apache.aries.blueprint.reflect.ServiceReferenceMetadataImpl;
+import org.apache.aries.blueprint.reflect.ValueMetadataImpl;
+import org.osgi.service.blueprint.container.ComponentDefinitionException;
+import org.osgi.service.blueprint.reflect.BeanArgument;
+import org.osgi.service.blueprint.reflect.BeanMetadata;
+import org.osgi.service.blueprint.reflect.BeanProperty;
+import org.osgi.service.blueprint.reflect.CollectionMetadata;
+import org.osgi.service.blueprint.reflect.ComponentMetadata;
+import org.osgi.service.blueprint.reflect.IdRefMetadata;
+import org.osgi.service.blueprint.reflect.MapEntry;
+import org.osgi.service.blueprint.reflect.MapMetadata;
+import org.osgi.service.blueprint.reflect.Metadata;
+import org.osgi.service.blueprint.reflect.NonNullMetadata;
+import org.osgi.service.blueprint.reflect.NullMetadata;
+import org.osgi.service.blueprint.reflect.PropsMetadata;
+import org.osgi.service.blueprint.reflect.RefMetadata;
+import org.osgi.service.blueprint.reflect.ReferenceListMetadata;
+import org.osgi.service.blueprint.reflect.ReferenceListener;
+import org.osgi.service.blueprint.reflect.ReferenceMetadata;
+import org.osgi.service.blueprint.reflect.RegistrationListener;
+import org.osgi.service.blueprint.reflect.ServiceMetadata;
+import org.osgi.service.blueprint.reflect.ServiceReferenceMetadata;
+import org.osgi.service.blueprint.reflect.Target;
+import org.osgi.service.blueprint.reflect.ValueMetadata;
+import org.w3c.dom.Attr;
+import org.w3c.dom.CharacterData;
+import org.w3c.dom.Comment;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.EntityReference;
+import org.w3c.dom.NamedNodeMap;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.xml.sax.InputSource;
+
+/**
+ * TODO: javadoc
+ *
+ * @version $Rev: 979454 $, $Date: 2010-07-26 22:38:25 +0100 (Mon, 26 Jul 2010) $
+ */
+public class Parser {
+
+    public static final String BLUEPRINT_NAMESPACE = "http://www.osgi.org/xmlns/blueprint/v1.0.0";
+
+    public static final String BLUEPRINT_ELEMENT = "blueprint";
+    public static final String DESCRIPTION_ELEMENT = "description";
+    public static final String TYPE_CONVERTERS_ELEMENT = "type-converters";
+    public static final String BEAN_ELEMENT = "bean";
+    public static final String ARGUMENT_ELEMENT = "argument";
+    public static final String REF_ELEMENT = "ref";
+    public static final String IDREF_ELEMENT = "idref";
+    public static final String LIST_ELEMENT = "list";
+    public static final String SET_ELEMENT = "set";
+    public static final String MAP_ELEMENT = "map";
+    public static final String ARRAY_ELEMENT = "array";
+    public static final String PROPS_ELEMENT = "props";
+    public static final String PROP_ELEMENT = "prop";
+    public static final String PROPERTY_ELEMENT = "property";
+    public static final String NULL_ELEMENT = "null";
+    public static final String VALUE_ELEMENT = "value";
+    public static final String SERVICE_ELEMENT = "service";
+    public static final String REFERENCE_ELEMENT = "reference";
+    public static final String REFERENCE_LIST_ELEMENT = "reference-list";
+    public static final String INTERFACES_ELEMENT = "interfaces";
+    public static final String REFERENCE_LISTENER_ELEMENT = "reference-listener";
+    public static final String SERVICE_PROPERTIES_ELEMENT = "service-properties";
+    public static final String REGISTRATION_LISTENER_ELEMENT = "registration-listener";
+    public static final String ENTRY_ELEMENT = "entry";
+    public static final String KEY_ELEMENT = "key";
+    public static final String DEFAULT_ACTIVATION_ATTRIBUTE = "default-activation";
+    public static final String DEFAULT_TIMEOUT_ATTRIBUTE = "default-timeout";
+    public static final String DEFAULT_AVAILABILITY_ATTRIBUTE = "default-availability";
+    public static final String NAME_ATTRIBUTE = "name";
+    public static final String ID_ATTRIBUTE = "id";
+    public static final String CLASS_ATTRIBUTE = "class";
+    public static final String INDEX_ATTRIBUTE = "index";
+    public static final String TYPE_ATTRIBUTE = "type";
+    public static final String VALUE_ATTRIBUTE = "value";
+    public static final String VALUE_REF_ATTRIBUTE = "value-ref";
+    public static final String KEY_ATTRIBUTE = "key";
+    public static final String KEY_REF_ATTRIBUTE = "key-ref";
+    public static final String REF_ATTRIBUTE = "ref";
+    public static final String COMPONENT_ID_ATTRIBUTE = "component-id";
+    public static final String INTERFACE_ATTRIBUTE = "interface";
+    public static final String DEPENDS_ON_ATTRIBUTE = "depends-on";
+    public static final String AUTO_EXPORT_ATTRIBUTE = "auto-export";
+    public static final String RANKING_ATTRIBUTE = "ranking";
+    public static final String TIMEOUT_ATTRIBUTE = "timeout";
+    public static final String FILTER_ATTRIBUTE = "filter";
+    public static final String COMPONENT_NAME_ATTRIBUTE = "component-name";
+    public static final String AVAILABILITY_ATTRIBUTE = "availability";
+    public static final String REGISTRATION_METHOD_ATTRIBUTE = "registration-method";
+    public static final String UNREGISTRATION_METHOD_ATTRIBUTE = "unregistration-method";
+    public static final String BIND_METHOD_ATTRIBUTE = "bind-method";
+    public static final String UNBIND_METHOD_ATTRIBUTE = "unbind-method";
+    public static final String KEY_TYPE_ATTRIBUTE = "key-type";
+    public static final String VALUE_TYPE_ATTRIBUTE = "value-type";
+    public static final String MEMBER_TYPE_ATTRIBUTE = "member-type";
+    public static final String SCOPE_ATTRIBUTE = "scope";
+    public static final String INIT_METHOD_ATTRIBUTE = "init-method";
+    public static final String DESTROY_METHOD_ATTRIBUTE = "destroy-method";
+    public static final String ACTIVATION_ATTRIBUTE = "activation";
+    public static final String FACTORY_REF_ATTRIBUTE = "factory-ref";
+    public static final String FACTORY_METHOD_ATTRIBUTE = "factory-method";
+
+    public static final String AUTO_EXPORT_DISABLED = "disabled";
+    public static final String AUTO_EXPORT_INTERFACES = "interfaces";
+    public static final String AUTO_EXPORT_CLASS_HIERARCHY = "class-hierarchy";
+    public static final String AUTO_EXPORT_ALL = "all-classes";
+    public static final String AUTO_EXPORT_DEFAULT = AUTO_EXPORT_DISABLED;
+    public static final String RANKING_DEFAULT = "0";
+    public static final String AVAILABILITY_MANDATORY = "mandatory";
+    public static final String AVAILABILITY_OPTIONAL = "optional";
+    public static final String AVAILABILITY_DEFAULT = AVAILABILITY_MANDATORY;
+    public static final String TIMEOUT_DEFAULT = "300000";
+    public static final String USE_SERVICE_OBJECT = "service-object";
+    public static final String USE_SERVICE_REFERENCE = "service-reference";
+    public static final String ACTIVATION_EAGER = "eager";
+    public static final String ACTIVATION_LAZY = "lazy";
+    public static final String ACTIVATION_DEFAULT = ACTIVATION_EAGER;
+    
+    private static DocumentBuilderFactory documentBuilderFactory;
+
+    private final List<Document> documents = new ArrayList<Document>();
+    private ComponentDefinitionRegistry registry;
+    private NamespaceHandlerRegistry.NamespaceHandlerSet handlers;
+    private String idPrefix = "component-";
+    private Set<String> ids = new HashSet<String>();
+    private int idCounter;
+    private String defaultTimeout;
+    private String defaultAvailability;
+    private String defaultActivation;
+    private Set<URI> namespaces;
+
+    public Parser() {
+    }
+
+    public Parser(String idPrefix) {
+        this.idPrefix = idPrefix;
+    }
+
+    /**
+     * Parse an input stream for blueprint xml. 
+     * @param inputStream The data to parse. The caller is responsible for closing the stream afterwards. 
+     * @throws Exception on parse error
+     */
+    public void parse(InputStream inputStream) throws Exception { 
+      InputSource inputSource = new InputSource(inputStream);
+      DocumentBuilder builder = getDocumentBuilderFactory().newDocumentBuilder();
+      Document doc = builder.parse(inputSource);
+      documents.add(doc);
+    }
+    
+    /**
+     * Parse blueprint xml referred to by a list of URLs
+     * @param urls URLs to blueprint xml to parse
+     * @throws Exception on parse error
+     */
+    public void parse(List<URL> urls) throws Exception {
+        // Create document builder factory
+        // Load documents
+        for (URL url : urls) {
+            InputStream inputStream = url.openStream();
+            try {
+                parse (inputStream);
+            } finally {
+                inputStream.close();
+            }
+        }
+    }
+
+    public Set<URI> getNamespaces() {
+        if (this.namespaces == null) {
+            Set<URI> namespaces = new LinkedHashSet<URI>();
+            for (Document doc : documents) {
+                findNamespaces(namespaces, doc);
+            }
+            this.namespaces = namespaces;
+        }
+        return this.namespaces;
+    }
+
+    private void findNamespaces(Set<URI> namespaces, Node node) {
+        if (node instanceof Element || node instanceof Attr) {
+            String ns = node.getNamespaceURI();
+            if (ns != null && !isBlueprintNamespace(ns) && !isIgnorableAttributeNamespace(ns)) {
+                namespaces.add(URI.create(ns));
+            }else if ( ns == null && //attributes from blueprint are unqualified as per schema.
+                       node instanceof Attr &&
+                       SCOPE_ATTRIBUTE.equals(node.getNodeName()) &&
+                       ((Attr)node).getOwnerElement() != null && //should never occur from parsed doc.
+                       BLUEPRINT_NAMESPACE.equals(((Attr)node).getOwnerElement().getNamespaceURI()) &&
+                       BEAN_ELEMENT.equals(((Attr)node).getOwnerElement().getLocalName()) ){
+                //Scope attribute is special case, as may contain namespace usage within its value.
+                
+                URI scopeNS = getNamespaceForAttributeValue(node);
+                if(scopeNS!=null){
+                    namespaces.add(scopeNS);
+                }
+            }
+        }
+        NamedNodeMap nnm = node.getAttributes();
+        if(nnm!=null){
+            for(int i = 0; i< nnm.getLength() ; i++){
+                findNamespaces(namespaces, nnm.item(i));
+            }
+        }
+        NodeList nl = node.getChildNodes();
+        for (int i = 0; i < nl.getLength(); i++) {
+            findNamespaces(namespaces, nl.item(i));
+        }
+    }
+
+    public void populate(NamespaceHandlerRegistry.NamespaceHandlerSet handlers,
+                         ComponentDefinitionRegistry registry) {
+        this.handlers = handlers;
+        this.registry = registry;
+        if (this.documents == null) {
+            throw new IllegalStateException("Documents should be parsed before populating the registry");
+        }
+        // Parse components
+        for (Document doc : this.documents) {
+            loadComponents(doc);
+        }
+    }
+
+    public void validate(Schema schema) {
+        try {
+            Validator validator = schema.newValidator();
+            for (Document doc : this.documents) {
+                validator.validate(new DOMSource(doc));
+            }
+        } catch (Exception e) {
+            throw new ComponentDefinitionException("Unable to validate xml", e);
+        }
+    }
+
+    private void loadComponents(Document doc) {
+        defaultTimeout = TIMEOUT_DEFAULT;
+        defaultAvailability = AVAILABILITY_DEFAULT;
+        defaultActivation = ACTIVATION_DEFAULT;
+        Element root = doc.getDocumentElement();
+        if (!isBlueprintNamespace(root.getNamespaceURI()) ||
+                !nodeNameEquals(root, BLUEPRINT_ELEMENT)) {
+            throw new ComponentDefinitionException("Root element must be {" + BLUEPRINT_NAMESPACE + "}" + BLUEPRINT_ELEMENT + " element");
+        }
+        // Parse global attributes
+        if (root.hasAttribute(DEFAULT_ACTIVATION_ATTRIBUTE)) {
+            defaultActivation = root.getAttribute(DEFAULT_ACTIVATION_ATTRIBUTE);
+        }
+        if (root.hasAttribute(DEFAULT_TIMEOUT_ATTRIBUTE)) {
+            defaultTimeout = root.getAttribute(DEFAULT_TIMEOUT_ATTRIBUTE);
+        }
+        if (root.hasAttribute(DEFAULT_AVAILABILITY_ATTRIBUTE)) {
+            defaultAvailability = root.getAttribute(DEFAULT_AVAILABILITY_ATTRIBUTE);
+        }
+        
+        // Parse custom attributes
+        handleCustomAttributes(root.getAttributes(), null);
+
+        // Parse elements
+        // Break into 2 loops to ensure we scan the blueprint elements before
+        // This is needed so that when we process the custom element, we know
+        // the component definition registry has populated all blueprint components.
+        NodeList nl = root.getChildNodes();
+        for (int i = 0; i < nl.getLength(); i++) {
+            Node node = nl.item(i);
+            if (node instanceof Element) {
+                Element element = (Element) node;
+                String namespaceUri = element.getNamespaceURI();
+                if (isBlueprintNamespace(namespaceUri)) {
+                    parseBlueprintElement(element);
+                } 
+            }
+        }
+        
+        for (int i = 0; i < nl.getLength(); i++) {
+            Node node = nl.item(i);
+            if (node instanceof Element) {
+                Element element = (Element) node;
+                String namespaceUri = element.getNamespaceURI();
+                if (!isBlueprintNamespace(namespaceUri)) {
+                    Metadata component = parseCustomElement(element, null);
+                    if (component != null) {
+                        if (!(component instanceof ComponentMetadata)) {
+                            throw new ComponentDefinitionException("Expected a ComponentMetadata to be returned when parsing element " + element.getNodeName());
+                        }
+                        registry.registerComponentDefinition((ComponentMetadata) component);
+                    }
+                } 
+            }
+        }
+    }
+
+    public <T> T parseElement(Class<T> type, ComponentMetadata enclosingComponent, Element element) {
+        if (BeanArgument.class.isAssignableFrom(type)) {
+            return type.cast(parseBeanArgument(enclosingComponent, element));
+        } else if (BeanProperty.class.isAssignableFrom(type)) {
+            return type.cast(parseBeanProperty(enclosingComponent, element));
+        } else if (MapEntry.class.isAssignableFrom(type)) {
+            return type.cast(parseMapEntry(element, enclosingComponent, null, null));
+        } else if (MapMetadata.class.isAssignableFrom(type)) {
+            return type.cast(parseMap(element, enclosingComponent));
+        } else if (BeanMetadata.class.isAssignableFrom(type)) {
+            return type.cast(parseBeanMetadata(element, enclosingComponent == null));
+        } else if (NullMetadata.class.isAssignableFrom(type)) {
+            return type.cast(NullMetadata.NULL);
+        } else if (CollectionMetadata.class.isAssignableFrom(type)) {
+            return type.cast(parseCollection(Collection.class, element, enclosingComponent));
+        } else if (PropsMetadata.class.isAssignableFrom(type)) {
+            return type.cast(parseProps(element));
+        } else if (ReferenceMetadata.class.isAssignableFrom(type)) {
+            return type.cast(parseReference(element, enclosingComponent == null));
+        } else if (ReferenceListMetadata.class.isAssignableFrom(type)) {
+            return type.cast(parseRefList(element, enclosingComponent == null));
+        } else if (ServiceMetadata.class.isAssignableFrom(type)) {
+            return type.cast(parseService(element, enclosingComponent == null));
+        } else if (IdRefMetadata.class.isAssignableFrom(type)) {
+            return type.cast(parseIdRef(element));
+        } else if (RefMetadata.class.isAssignableFrom(type)) {
+            return type.cast(parseRef(element));
+        } else if (ValueMetadata.class.isAssignableFrom(type)) {
+            return type.cast(parseValue(element, null));
+        } else if (ReferenceListener.class.isAssignableFrom(type)) {
+            return type.cast(parseServiceListener(element, enclosingComponent));
+        } else if (Metadata.class.isAssignableFrom(type)) {
+            return type.cast(parseValueGroup(element, enclosingComponent, null, true));
+        } else {
+            throw new ComponentDefinitionException("Unknown type to parse element: " + type.getName());
+        }
+    }
+
+    private void parseBlueprintElement(Element element) {
+        if (nodeNameEquals(element, DESCRIPTION_ELEMENT)) {
+            // Ignore description
+        } else if (nodeNameEquals(element, TYPE_CONVERTERS_ELEMENT)) {
+            parseTypeConverters(element);
+        } else if (nodeNameEquals(element, BEAN_ELEMENT)) {
+            ComponentMetadata component = parseBeanMetadata(element, true);
+            registry.registerComponentDefinition(component);
+        } else if (nodeNameEquals(element, SERVICE_ELEMENT)) {
+            ComponentMetadata service = parseService(element, true);
+            registry.registerComponentDefinition(service);
+        } else if (nodeNameEquals(element, REFERENCE_ELEMENT)) {
+            ComponentMetadata reference = parseReference(element, true);
+            registry.registerComponentDefinition(reference);
+        } else if (nodeNameEquals(element, REFERENCE_LIST_ELEMENT) ) {
+            ComponentMetadata references = parseRefList(element, true);
+            registry.registerComponentDefinition(references);
+        } else {
+            throw new ComponentDefinitionException("Unknown element " + element.getNodeName() + " in namespace " + BLUEPRINT_NAMESPACE);
+        }
+    }
+
+    private void parseTypeConverters(Element element) {
+        NodeList nl = element.getChildNodes();
+        for (int i = 0; i < nl.getLength(); i++) {
+            Node node = nl.item(i);
+            if (node instanceof Element) {
+                Element e = (Element) node;
+                Object target = null;
+                if (isBlueprintNamespace(e.getNamespaceURI())) {
+                    if (nodeNameEquals(e, BEAN_ELEMENT)) {
+                        target = parseBeanMetadata(e, true);
+                    } else if (nodeNameEquals(e, REF_ELEMENT)) {
+                        String componentName = e.getAttribute(COMPONENT_ID_ATTRIBUTE);
+                        target = new RefMetadataImpl(componentName);
+                    } else if (nodeNameEquals(e, REFERENCE_ELEMENT)) {
+                        target = parseReference(e, true);
+                    }
+                } else {
+                    target = parseCustomElement(e, null);
+                }
+                if (!(target instanceof Target)) {
+                    throw new ComponentDefinitionException("Metadata parsed for element " + e.getNodeName() + " can not be used as a type converter");
+                }
+                registry.registerTypeConverter((Target) target);
+            }
+        }
+    }
+    
+    /**
+     * Takes an Attribute Node containing a namespace prefix qualified attribute value, and resolves the namespace using the DOM Node.<br> 
+     *  
+     * @param attrNode The DOM Node with the qualified attribute value.
+     * @return The URI if one is resolvable, or null if the attr is null, or not namespace prefixed. (or not a DOM Attribute Node)
+     * @throws ComponentDefinitionException if the namespace prefix in the attribute value cannot be resolved.
+     */
+    private URI getNamespaceForAttributeValue(Node attrNode) throws ComponentDefinitionException {
+        URI uri = null;
+        if(attrNode!=null && (attrNode instanceof Attr)){
+            Attr attr = (Attr)attrNode;
+            String attrValue = attr.getValue();
+            if(attrValue!=null && attrValue.indexOf(":")!=-1){
+                String parts[] = attrValue.split(":");
+                String uriStr = attr.getOwnerElement().lookupNamespaceURI(parts[0]);
+                if(uriStr!=null){
+                    uri = URI.create(uriStr);
+                }else{
+                    throw new ComponentDefinitionException("Unsupported attribute namespace prefix "+parts[0]+" "+attr);
+                }
+            }
+        }
+        return uri;
+    }
+    
+    /**
+     * Tests if a scope attribute value is a custom scope, and if so invokes
+     * the appropriate namespace handler, passing the blueprint scope node. 
+     * <p> 
+     * Currently this tests for custom scope by looking for the presence of
+     * a ':' char within the scope attribute value. This is valid as long as
+     * the blueprint schema continues to restrict that custom scopes should
+     * require that characters presence.
+     * <p>
+     *  
+     * @param scope Value of scope attribute
+     * @param bean DOM element for bean associated to this scope 
+     * @return Metadata as processed by NS Handler.
+     * @throws ComponentDefinitionException if an undeclared prefix is used, 
+     *           if a namespace handler is unavailable for a resolved prefix, 
+     *           or if the resolved prefix results as the blueprint namespace.
+     */
+    private ComponentMetadata handleCustomScope(Node scope, Element bean, ComponentMetadata metadata){
+        URI scopeNS = getNamespaceForAttributeValue(scope);
+        if(scopeNS!=null && !BLUEPRINT_NAMESPACE.equals(scopeNS.toString())){
+            NamespaceHandler nsHandler = getNamespaceHandler(scopeNS);
+            ParserContextImpl context = new ParserContextImpl(this, registry, metadata, scope);
+            metadata = nsHandler.decorate(scope, metadata, context);
+        }else if(scopeNS!=null){
+            throw new ComponentDefinitionException("Custom scopes cannot use the blueprint namespace "+scope);
+        }
+        return metadata;
+    }
+
+    private ComponentMetadata parseBeanMetadata(Element element, boolean topElement) {
+        BeanMetadataImpl metadata = new BeanMetadataImpl();
+        if (topElement) {
+            metadata.setId(getId(element));
+            if (element.hasAttribute(SCOPE_ATTRIBUTE)) {
+                metadata.setScope(element.getAttribute(SCOPE_ATTRIBUTE));
+                if (metadata.getScope().equals(BeanMetadata.SCOPE_PROTOTYPE)) {
+                    if (element.hasAttribute(ACTIVATION_ATTRIBUTE)) {
+                        if (element.getAttribute(ACTIVATION_ATTRIBUTE).equals(ACTIVATION_EAGER)) {
+                            throw new ComponentDefinitionException("A <bean> with a prototype scope can not have an eager activation");
+                        }
+                    }
+                    metadata.setActivation(ComponentMetadata.ACTIVATION_LAZY);
+                } else {
+                    metadata.setActivation(parseActivation(element));
+                }
+            } else {
+                metadata.setActivation(parseActivation(element));
+            }
+        } else {
+            metadata.setActivation(ComponentMetadata.ACTIVATION_LAZY);
+        }
+        if (element.hasAttribute(CLASS_ATTRIBUTE)) {
+            metadata.setClassName(element.getAttribute(CLASS_ATTRIBUTE));
+        }
+        if (element.hasAttribute(DEPENDS_ON_ATTRIBUTE)) {
+            metadata.setDependsOn(parseList(element.getAttribute(DEPENDS_ON_ATTRIBUTE)));
+        }
+        if (element.hasAttribute(INIT_METHOD_ATTRIBUTE)) {
+            metadata.setInitMethod(element.getAttribute(INIT_METHOD_ATTRIBUTE));
+        }
+        if (element.hasAttribute(DESTROY_METHOD_ATTRIBUTE)) {
+            metadata.setDestroyMethod(element.getAttribute(DESTROY_METHOD_ATTRIBUTE));
+        }
+        if (element.hasAttribute(FACTORY_REF_ATTRIBUTE)) {
+            metadata.setFactoryComponent(new RefMetadataImpl(element.getAttribute(FACTORY_REF_ATTRIBUTE)));
+        }
+        if (element.hasAttribute(FACTORY_METHOD_ATTRIBUTE)) {
+            String factoryMethod = element.getAttribute(FACTORY_METHOD_ATTRIBUTE);
+            metadata.setFactoryMethod(factoryMethod);
+        }
+
+        // Do some validation
+        if (metadata.getClassName() == null && metadata.getFactoryComponent() == null) {
+            throw new ComponentDefinitionException("Bean class or factory-ref must be specified");
+        }
+        if (metadata.getFactoryComponent() != null && metadata.getFactoryMethod() == null) {
+            throw new ComponentDefinitionException("factory-method is required when factory-component is set");
+        }
+        if (MetadataUtil.isPrototypeScope(metadata) && metadata.getDestroyMethod() != null) {
+            throw new ComponentDefinitionException("destroy-method must not be set for a <bean> with a prototype scope");
+        }
+
+        // Parse elements
+        NodeList nl = element.getChildNodes();
+        for (int i = 0; i < nl.getLength(); i++) {
+            Node node = nl.item(i);
+            if (node instanceof Element) {
+                Element e = (Element) node;
+                if (isBlueprintNamespace(node.getNamespaceURI())) {                
+                    if (nodeNameEquals(node, ARGUMENT_ELEMENT)) {
+                        metadata.addArgument(parseBeanArgument(metadata, e));
+                    } else if (nodeNameEquals(node, PROPERTY_ELEMENT)) {
+                        metadata.addProperty(parseBeanProperty(metadata, e));
+                    }
+                }
+            }
+        }
+
+        MetadataUtil.validateBeanArguments(metadata.getArguments());
+        
+        ComponentMetadata m = metadata;
+        
+        // Parse custom scopes
+        m = handleCustomScope(element.getAttributeNode(SCOPE_ATTRIBUTE), element, m);
+        
+        // Parse custom attributes
+        m = handleCustomAttributes(element.getAttributes(), m);
+        
+        // Parse custom elements;
+        m = handleCustomElements(element, m);
+        
+        return m;
+    }
+
+    public BeanProperty parseBeanProperty(ComponentMetadata enclosingComponent, Element element) {
+        String name = element.hasAttribute(NAME_ATTRIBUTE) ? element.getAttribute(NAME_ATTRIBUTE) : null;
+        Metadata value = parseArgumentOrPropertyValue(element, enclosingComponent);
+        return new BeanPropertyImpl(name, value);
+    }
+
+    private BeanArgument parseBeanArgument(ComponentMetadata enclosingComponent, Element element) {
+        int index = element.hasAttribute(INDEX_ATTRIBUTE) ? Integer.parseInt(element.getAttribute(INDEX_ATTRIBUTE)) : -1;
+        String type = element.hasAttribute(TYPE_ATTRIBUTE) ? element.getAttribute(TYPE_ATTRIBUTE) : null;
+        Metadata value = parseArgumentOrPropertyValue(element, enclosingComponent);
+        return new BeanArgumentImpl(value, type, index);
+    }
+
+    private ComponentMetadata parseService(Element element, boolean topElement) {
+        ServiceMetadataImpl service = new ServiceMetadataImpl();
+        boolean hasInterfaceNameAttribute = false;
+        if (topElement) {
+            service.setId(getId(element));
+            service.setActivation(parseActivation(element));
+        } else {
+            service.setActivation(ComponentMetadata.ACTIVATION_LAZY);
+        }
+        if (element.hasAttribute(INTERFACE_ATTRIBUTE)) {
+            service.setInterfaceNames(Collections.singletonList(element.getAttribute(INTERFACE_ATTRIBUTE)));
+            hasInterfaceNameAttribute = true;
+        }
+        if (element.hasAttribute(REF_ATTRIBUTE)) {
+            service.setServiceComponent(new RefMetadataImpl(element.getAttribute(REF_ATTRIBUTE)));
+        }
+        if (element.hasAttribute(DEPENDS_ON_ATTRIBUTE)) {
+            service.setDependsOn(parseList(element.getAttribute(DEPENDS_ON_ATTRIBUTE)));
+        }
+        String autoExport = element.hasAttribute(AUTO_EXPORT_ATTRIBUTE) ? element.getAttribute(AUTO_EXPORT_ATTRIBUTE) : AUTO_EXPORT_DEFAULT;
+        if (AUTO_EXPORT_DISABLED.equals(autoExport)) {
+            service.setAutoExport(ServiceMetadata.AUTO_EXPORT_DISABLED);
+        } else if (AUTO_EXPORT_INTERFACES.equals(autoExport)) {
+            service.setAutoExport(ServiceMetadata.AUTO_EXPORT_INTERFACES);
+        } else if (AUTO_EXPORT_CLASS_HIERARCHY.equals(autoExport)) {
+            service.setAutoExport(ServiceMetadata.AUTO_EXPORT_CLASS_HIERARCHY);
+        } else if (AUTO_EXPORT_ALL.equals(autoExport)) {
+            service.setAutoExport(ServiceMetadata.AUTO_EXPORT_ALL_CLASSES);
+        } else {
+            throw new ComponentDefinitionException("Illegal value (" + autoExport + ") for " + AUTO_EXPORT_ATTRIBUTE + " attribute");
+        }
+        String ranking = element.hasAttribute(RANKING_ATTRIBUTE) ? element.getAttribute(RANKING_ATTRIBUTE) : RANKING_DEFAULT;
+        try {
+            service.setRanking(Integer.parseInt(ranking));
+        } catch (NumberFormatException e) {
+            throw new ComponentDefinitionException("Attribute " + RANKING_ATTRIBUTE + " must be a valid integer (was: " + ranking + ")");
+        }
+        // Parse elements
+        NodeList nl = element.getChildNodes();
+        for (int i = 0; i < nl.getLength(); i++) {
+            Node node = nl.item(i);
+            if (node instanceof Element) {
+                Element e = (Element) node;
+                if (isBlueprintNamespace(e.getNamespaceURI())) {
+                    if (nodeNameEquals(e, INTERFACES_ELEMENT)) {
+                        if (hasInterfaceNameAttribute) {
+                            throw new ComponentDefinitionException("Only one of " + INTERFACE_ATTRIBUTE + " attribute or " + INTERFACES_ELEMENT + " element must be used");
+                        }
+                        service.setInterfaceNames(parseInterfaceNames(e));
+                    } else if (nodeNameEquals(e, SERVICE_PROPERTIES_ELEMENT)) {
+                        List<MapEntry> entries = parseServiceProperties(e, service).getEntries();
+                        service.setServiceProperties(entries); 
+                    } else if (nodeNameEquals(e, REGISTRATION_LISTENER_ELEMENT)) {
+                        service.addRegistrationListener(parseRegistrationListener(e, service));
+                    } else if (nodeNameEquals(e, BEAN_ELEMENT)) {
+                        if (service.getServiceComponent() != null) {
+                            throw new ComponentDefinitionException("Only one of " + REF_ATTRIBUTE + " attribute, " + BEAN_ELEMENT + " element, " + REFERENCE_ELEMENT + " element or " + REF_ELEMENT + " element can be set");
+                        }
+                        service.setServiceComponent((Target) parseBeanMetadata(e, false));
+                    } else if (nodeNameEquals(e, REF_ELEMENT)) {
+                        if (service.getServiceComponent() != null) {
+                            throw new ComponentDefinitionException("Only one of " + REF_ATTRIBUTE + " attribute, " + BEAN_ELEMENT + " element, " + REFERENCE_ELEMENT + " element or " + REF_ELEMENT + " element can be set");
+                        }
+                        String component = e.getAttribute(COMPONENT_ID_ATTRIBUTE);
+                        if (component == null || component.length() == 0) {
+                            throw new ComponentDefinitionException("Element " + REF_ELEMENT + " must have a valid " + COMPONENT_ID_ATTRIBUTE + " attribute");
+                        }
+                        service.setServiceComponent(new RefMetadataImpl(component));                   
+                    } else if (nodeNameEquals(e, REFERENCE_ELEMENT)) {
+                        if (service.getServiceComponent() != null) {
+                            throw new ComponentDefinitionException("Only one of " + REF_ATTRIBUTE + " attribute, " + BEAN_ELEMENT + " element, " + REFERENCE_ELEMENT + " element or " + REF_ELEMENT + " element can be set");
+                        }
+                        service.setServiceComponent((Target) parseReference(e, false));
+                    }
+                }
+            }
+        }
+        // Check service
+        if (service.getServiceComponent() == null) {
+            throw new ComponentDefinitionException("One of " + REF_ATTRIBUTE + " attribute, " + BEAN_ELEMENT + " element, " + REFERENCE_ELEMENT + " element or " + REF_ELEMENT + " element must be set");
+        }
+        // Check interface
+        if (service.getAutoExport() == ServiceMetadata.AUTO_EXPORT_DISABLED && service.getInterfaces().isEmpty()) {
+            throw new ComponentDefinitionException(INTERFACE_ATTRIBUTE + " attribute or " + INTERFACES_ELEMENT + " element must be set when " + AUTO_EXPORT_ATTRIBUTE + " is set to " + AUTO_EXPORT_DISABLED);
+        }
+        // Check for non-disabled auto-exports and interfaces
+        if (service.getAutoExport() != ServiceMetadata.AUTO_EXPORT_DISABLED && !service.getInterfaces().isEmpty()) {
+            throw new ComponentDefinitionException(INTERFACE_ATTRIBUTE + " attribute or  " + INTERFACES_ELEMENT + " element must not be set when " + AUTO_EXPORT_ATTRIBUTE + " is set to anything else than " + AUTO_EXPORT_DISABLED);
+        }
+        ComponentMetadata s = service;
+        
+        // Parse custom attributes
+        s = handleCustomAttributes(element.getAttributes(), s);
+
+        // Parse custom elements;
+        s = handleCustomElements(element, s);
+        
+        return s;
+    }
+
+    private CollectionMetadata parseArray(Element element, ComponentMetadata enclosingComponent) {
+        return parseCollection(Object[].class, element, enclosingComponent);
+    }
+
+    private CollectionMetadata parseList(Element element, ComponentMetadata enclosingComponent) {
+        return parseCollection(List.class, element, enclosingComponent);
+    }
+
+    private CollectionMetadata parseSet(Element element, ComponentMetadata enclosingComponent) {
+        return parseCollection(Set.class, element, enclosingComponent);
+    }
+
+    private CollectionMetadata parseCollection(Class collectionType, Element element, ComponentMetadata enclosingComponent) {
+        // Parse attributes
+        String valueType = element.hasAttribute(VALUE_TYPE_ATTRIBUTE) ? element.getAttribute(VALUE_TYPE_ATTRIBUTE) : null;
+        // Parse elements
+        List<Metadata> list = new ArrayList<Metadata>();
+        NodeList nl = element.getChildNodes();
+        for (int i = 0; i < nl.getLength(); i++) {
+            Node node = nl.item(i);
+            if (node instanceof Element) {
+                Metadata val = parseValueGroup((Element) node, enclosingComponent, null, true);
+                list.add(val);
+            }
+        }
+        return new CollectionMetadataImpl(collectionType, valueType, list);
+    }
+
+    public PropsMetadata parseProps(Element element) {
+        // Parse elements
+        List<MapEntry> entries = new ArrayList<MapEntry>();
+        NodeList nl = element.getChildNodes();
+        for (int i = 0; i < nl.getLength(); i++) {
+            Node node = nl.item(i);
+            if (node instanceof Element) {
+                Element e = (Element) node;
+                if (isBlueprintNamespace(e.getNamespaceURI()) && nodeNameEquals(e, PROP_ELEMENT)) {
+                    entries.add(parseProperty(e));
+                }
+            }
+        }
+        return new PropsMetadataImpl(entries);
+    }
+
+    private MapEntry parseProperty(Element element) {
+        // Parse attributes
+        if (!element.hasAttribute(KEY_ATTRIBUTE)) {
+            throw new ComponentDefinitionException(KEY_ATTRIBUTE + " attribute is required");
+        }
+        String value;
+        if (element.hasAttribute(VALUE_ATTRIBUTE)) {
+            value = element.getAttribute(VALUE_ATTRIBUTE);
+        } else {
+            value = getTextValue(element);
+        }
+        String key = element.getAttribute(KEY_ATTRIBUTE);
+        return new MapEntryImpl(new ValueMetadataImpl(key), new ValueMetadataImpl(value));
+    }
+
+    public MapMetadata parseMap(Element element, ComponentMetadata enclosingComponent) {
+        // Parse attributes
+        String keyType = element.hasAttribute(KEY_TYPE_ATTRIBUTE) ? element.getAttribute(KEY_TYPE_ATTRIBUTE) : null;
+        String valueType = element.hasAttribute(VALUE_TYPE_ATTRIBUTE) ? element.getAttribute(VALUE_TYPE_ATTRIBUTE) : null;
+        // Parse elements
+        List<MapEntry> entries = new ArrayList<MapEntry>();
+        NodeList nl = element.getChildNodes();
+        for (int i = 0; i < nl.getLength(); i++) {
+            Node node = nl.item(i);
+            if (node instanceof Element) {
+                Element e = (Element) node;
+                if (nodeNameEquals(e, ENTRY_ELEMENT)) {
+                    entries.add(parseMapEntry(e, enclosingComponent, null, null));
+                }
+            }
+        }
+        return new MapMetadataImpl(keyType, valueType, entries);
+    }
+
+    private MapEntry parseMapEntry(Element element, ComponentMetadata enclosingComponent, String keyType, String valueType) {
+        // Parse attributes
+        String key = element.hasAttribute(KEY_ATTRIBUTE) ? element.getAttribute(KEY_ATTRIBUTE) : null;
+        String keyRef = element.hasAttribute(KEY_REF_ATTRIBUTE) ? element.getAttribute(KEY_REF_ATTRIBUTE) : null;
+        String value = element.hasAttribute(VALUE_ATTRIBUTE) ? element.getAttribute(VALUE_ATTRIBUTE) : null;
+        String valueRef = element.hasAttribute(VALUE_REF_ATTRIBUTE) ? element.getAttribute(VALUE_REF_ATTRIBUTE) : null;
+        // Parse elements
+        NonNullMetadata keyValue = null;
+        Metadata valValue = null;
+        NodeList nl = element.getChildNodes();
+        for (int i = 0; i < nl.getLength(); i++) {
+            Node node = nl.item(i);
+            if (node instanceof Element) {
+                Element e = (Element) node;
+                if (nodeNameEquals(e, KEY_ELEMENT)) {
+                    keyValue = parseMapKeyEntry(e, enclosingComponent, keyType);
+                } else {
+                    valValue = parseValueGroup(e, enclosingComponent, valueType, true);
+                }
+            }
+        }
+        // Check key
+        if (keyValue != null && (key != null || keyRef != null) || (keyValue == null && key == null && keyRef == null)) {
+            throw new ComponentDefinitionException("Only and only one of " + KEY_ATTRIBUTE + " attribute, " + KEY_REF_ATTRIBUTE + " attribute or " + KEY_ELEMENT + " element must be set");
+        } else if (keyValue == null && key != null) {
+            keyValue = new ValueMetadataImpl(key, keyType);
+        } else if (keyValue == null /*&& keyRef != null*/) {
+            keyValue = new RefMetadataImpl(keyRef);
+        }
+        // Check value
+        if (valValue != null && (value != null || valueRef != null) || (valValue == null && value == null && valueRef == null)) {
+            throw new ComponentDefinitionException("Only and only one of " + VALUE_ATTRIBUTE + " attribute, " + VALUE_REF_ATTRIBUTE + " attribute or sub element must be set");
+        } else if (valValue == null && value != null) {
+            valValue = new ValueMetadataImpl(value, valueType);
+        } else if (valValue == null /*&& valueRef != null*/) {
+            valValue = new RefMetadataImpl(valueRef);
+        }
+        return new MapEntryImpl(keyValue, valValue);
+    }
+
+    private NonNullMetadata parseMapKeyEntry(Element element, ComponentMetadata enclosingComponent, String keyType) {
+        NonNullMetadata keyValue = null;
+        NodeList nl = element.getChildNodes();
+        for (int i = 0; i < nl.getLength(); i++) {
+            Node node = nl.item(i);
+            if (node instanceof Element) {
+                Element e = (Element) node;
+                if (keyValue != null) {
+                    // TODO: throw an exception
+                }
+                keyValue = (NonNullMetadata) parseValueGroup(e, enclosingComponent, keyType, false);
+                break;
+            }
+        }
+        if (keyValue == null) {
+            // TODO: throw an exception
+        }
+        return keyValue;
+    }
+    
+    public MapMetadata parseServiceProperties(Element element, ComponentMetadata enclosingComponent) {
+        // TODO: need to handle this better
+        MapMetadata map = parseMap(element, enclosingComponent);
+        handleCustomElements(element, enclosingComponent);
+        return map;
+    }
+    
+    public RegistrationListener parseRegistrationListener(Element element, ComponentMetadata enclosingComponent) {
+        RegistrationListenerImpl listener = new RegistrationListenerImpl();
+        Metadata listenerComponent = null;
+        // Parse attributes
+        if (element.hasAttribute(REF_ATTRIBUTE)) {
+            listenerComponent = new RefMetadataImpl(element.getAttribute(REF_ATTRIBUTE));
+        }
+        String registrationMethod = null;
+        if (element.hasAttribute(REGISTRATION_METHOD_ATTRIBUTE)) {
+            registrationMethod = element.getAttribute(REGISTRATION_METHOD_ATTRIBUTE);
+            listener.setRegistrationMethod(registrationMethod);
+        }
+        String unregistrationMethod = null;
+        if (element.hasAttribute(UNREGISTRATION_METHOD_ATTRIBUTE)) {
+            unregistrationMethod = element.getAttribute(UNREGISTRATION_METHOD_ATTRIBUTE);
+            listener.setUnregistrationMethod(unregistrationMethod);
+        }
+        if (registrationMethod == null && unregistrationMethod == null) {
+            throw new ComponentDefinitionException("One of " + REGISTRATION_METHOD_ATTRIBUTE + " or " + UNREGISTRATION_METHOD_ATTRIBUTE + " must be set");
+        }
+        // Parse elements
+        NodeList nl = element.getChildNodes();
+        for (int i = 0; i < nl.getLength(); i++) {
+            Node node = nl.item(i);
+            if (node instanceof Element) {
+                Element e = (Element) node;
+                if (isBlueprintNamespace(e.getNamespaceURI())) {
+                    if (nodeNameEquals(e, REF_ELEMENT)) {
+                        if (listenerComponent != null) {
+                            throw new ComponentDefinitionException("Only one of " + REF_ATTRIBUTE + " attribute, " + REF_ELEMENT + ", " + BEAN_ELEMENT + ", " + REFERENCE_ELEMENT + ", " + SERVICE_ELEMENT + " or custom element can be set");
+                        }
+                        String component = e.getAttribute(COMPONENT_ID_ATTRIBUTE);
+                        if (component == null || component.length() == 0) {
+                            throw new ComponentDefinitionException("Element " + REF_ELEMENT + " must have a valid " + COMPONENT_ID_ATTRIBUTE + " attribute");
+                        }
+                        listenerComponent = new RefMetadataImpl(component);
+                    } else if (nodeNameEquals(e, BEAN_ELEMENT)) {
+                        if (listenerComponent != null) {
+                            throw new ComponentDefinitionException("Only one of " + REF_ATTRIBUTE + " attribute, " + REF_ELEMENT + ", " + BEAN_ELEMENT + ", " + REFERENCE_ELEMENT + ", " + SERVICE_ELEMENT + " or custom element can be set");
+                        }
+                        listenerComponent = parseBeanMetadata(e, false);
+                    } else if (nodeNameEquals(e, REFERENCE_ELEMENT)) {
+                        if (listenerComponent != null) {
+                            throw new ComponentDefinitionException("Only one of " + REF_ATTRIBUTE + " attribute, " + REF_ELEMENT + ", " + BEAN_ELEMENT + ", " + REFERENCE_ELEMENT + ", " + SERVICE_ELEMENT + " or custom element can be set");
+                        }
+                        listenerComponent = parseReference(e, false);
+                    } else if (nodeNameEquals(e, SERVICE_ELEMENT)) {
+                        if (listenerComponent != null) {
+                            throw new ComponentDefinitionException("Only one of " + REF_ATTRIBUTE + " attribute, " + REF_ELEMENT + ", " + BEAN_ELEMENT + ", " + REFERENCE_ELEMENT + ", " + SERVICE_ELEMENT + " or custom element can be set");
+                        }
+                        listenerComponent = parseService(e, false);
+                    }
+                } else {
+                    if (listenerComponent != null) {
+                        throw new ComponentDefinitionException("Only one of " + REF_ATTRIBUTE + " attribute, " + REF_ELEMENT + ", " + BEAN_ELEMENT + ", " + REFERENCE_ELEMENT + ", " + SERVICE_ELEMENT + " or custom element can be set");
+                    }
+                    listenerComponent = parseCustomElement(e, enclosingComponent);
+                }
+            }
+        }
+        if (listenerComponent == null) {
+            throw new ComponentDefinitionException("One of " + REF_ATTRIBUTE + " attribute, " + REF_ELEMENT + ", " + BEAN_ELEMENT + ", " + REFERENCE_ELEMENT + ", " + SERVICE_ELEMENT + " or custom element must be set");
+        }
+        listener.setListenerComponent((Target) listenerComponent);
+        return listener;
+    }
+
+    private ComponentMetadata parseReference(Element element, boolean topElement) {       
+        ReferenceMetadataImpl reference = new ReferenceMetadataImpl();
+        if (topElement) {
+            reference.setId(getId(element));
+        }
+        parseReference(element, reference, topElement);
+        String timeout = element.hasAttribute(TIMEOUT_ATTRIBUTE) ? element.getAttribute(TIMEOUT_ATTRIBUTE) : this.defaultTimeout;
+        try {
+            reference.setTimeout(Long.parseLong(timeout));
+        } catch (NumberFormatException e) {
+            throw new ComponentDefinitionException("Attribute " + TIMEOUT_ATTRIBUTE + " must be a valid long (was: " + timeout + ")");
+        }
+        
+        ComponentMetadata r = reference;
+
+        // Parse custom attributes
+        r = handleCustomAttributes(element.getAttributes(), r);
+
+        // Parse custom elements;
+        r = handleCustomElements(element, r);
+        
+        return r;
+    }
+
+    public String getDefaultTimeout() {
+        return defaultTimeout;
+    }
+
+    public String getDefaultAvailability() {
+        return defaultAvailability;
+    }
+
+    public String getDefaultActivation() {
+        return defaultActivation;
+    }
+
+    private ComponentMetadata parseRefList(Element element, boolean topElement) {
+        ReferenceListMetadataImpl references = new ReferenceListMetadataImpl();
+        if (topElement) {
+            references.setId(getId(element));
+        }
+        if (element.hasAttribute(MEMBER_TYPE_ATTRIBUTE)) {
+            String memberType = element.getAttribute(MEMBER_TYPE_ATTRIBUTE);
+            if (USE_SERVICE_OBJECT.equals(memberType)) {
+                references.setMemberType(ReferenceListMetadata.USE_SERVICE_OBJECT);
+            } else if (USE_SERVICE_REFERENCE.equals(memberType)) {
+                references.setMemberType(ReferenceListMetadata.USE_SERVICE_REFERENCE);
+            }
+        } else {
+            references.setMemberType(ReferenceListMetadata.USE_SERVICE_OBJECT);
+        }
+        parseReference(element, references, topElement);
+
+        ComponentMetadata r = references;
+        
+        // Parse custom attributes
+        r = handleCustomAttributes(element.getAttributes(), r);
+
+        // Parse custom elements;
+        r = handleCustomElements(element, r);
+        
+        return r;
+    }
+
+    private void parseReference(Element element, ServiceReferenceMetadataImpl reference, boolean topElement) {
+        // Parse attributes
+        if (topElement) {
+            reference.setActivation(parseActivation(element));
+        } else {
+            reference.setActivation(ComponentMetadata.ACTIVATION_LAZY);
+        }
+        if (element.hasAttribute(DEPENDS_ON_ATTRIBUTE)) {
+            reference.setDependsOn(parseList(element.getAttribute(DEPENDS_ON_ATTRIBUTE)));
+        }
+        if (element.hasAttribute(INTERFACE_ATTRIBUTE)) {
+            reference.setInterface(element.getAttribute(INTERFACE_ATTRIBUTE));
+        }
+        if (element.hasAttribute(FILTER_ATTRIBUTE)) {
+            reference.setFilter(element.getAttribute(FILTER_ATTRIBUTE));
+        }
+        if (element.hasAttribute(COMPONENT_NAME_ATTRIBUTE)) {
+            reference.setComponentName(element.getAttribute(COMPONENT_NAME_ATTRIBUTE));
+        }
+        String availability = element.hasAttribute(AVAILABILITY_ATTRIBUTE) ? element.getAttribute(AVAILABILITY_ATTRIBUTE) : defaultAvailability;
+        if (AVAILABILITY_MANDATORY.equals(availability)) {
+            reference.setAvailability(ServiceReferenceMetadata.AVAILABILITY_MANDATORY);
+        } else if (AVAILABILITY_OPTIONAL.equals(availability)) {
+            reference.setAvailability(ServiceReferenceMetadata.AVAILABILITY_OPTIONAL);
+        } else {
+            throw new ComponentDefinitionException("Illegal value for " + AVAILABILITY_ATTRIBUTE + " attribute: " + availability);
+        }
+        // Parse elements
+        NodeList nl = element.getChildNodes();
+        for (int i = 0; i < nl.getLength(); i++) {
+            Node node = nl.item(i);
+            if (node instanceof Element) {
+                Element e = (Element) node;
+                if (isBlueprintNamespace(e.getNamespaceURI())) {
+                    if (nodeNameEquals(e, REFERENCE_LISTENER_ELEMENT)) {
+                        reference.addServiceListener(parseServiceListener(e, reference));
+                    }
+                }
+            }
+        }
+    }
+
+    private ReferenceListener parseServiceListener(Element element, ComponentMetadata enclosingComponent) {
+        ReferenceListenerImpl listener = new ReferenceListenerImpl();
+        Metadata listenerComponent = null;
+        // Parse attributes
+        if (element.hasAttribute(REF_ATTRIBUTE)) {
+            listenerComponent = new RefMetadataImpl(element.getAttribute(REF_ATTRIBUTE));
+        }
+        String bindMethodName = null;
+        String unbindMethodName = null;
+        if (element.hasAttribute(BIND_METHOD_ATTRIBUTE)) {
+            bindMethodName = element.getAttribute(BIND_METHOD_ATTRIBUTE);
+            listener.setBindMethod(bindMethodName);
+        }
+        if (element.hasAttribute(UNBIND_METHOD_ATTRIBUTE)) {
+            unbindMethodName = element.getAttribute(UNBIND_METHOD_ATTRIBUTE);
+            listener.setUnbindMethod(unbindMethodName);
+        }
+        if (bindMethodName == null && unbindMethodName == null) {
+            throw new ComponentDefinitionException("One of " + BIND_METHOD_ATTRIBUTE + " or " + UNBIND_METHOD_ATTRIBUTE + " must be set");
+        }
+        // Parse elements
+        NodeList nl = element.getChildNodes();
+        for (int i = 0; i < nl.getLength(); i++) {
+            Node node = nl.item(i);
+            if (node instanceof Element) {
+                Element e = (Element) node;
+                if (isBlueprintNamespace(e.getNamespaceURI())) {
+                    if (nodeNameEquals(e, REF_ELEMENT)) {
+                        if (listenerComponent != null) {
+                            throw new ComponentDefinitionException("Only one of " + REF_ATTRIBUTE + " attribute, " + REF_ELEMENT + ", " + BLUEPRINT_ELEMENT + ", " + REFERENCE_ELEMENT + ", " + SERVICE_ELEMENT + " or custom element can be set");
+                        }
+                        String component = e.getAttribute(COMPONENT_ID_ATTRIBUTE);
+                        if (component == null || component.length() == 0) {
+                            throw new ComponentDefinitionException("Element " + REF_ELEMENT + " must have a valid " + COMPONENT_ID_ATTRIBUTE + " attribute");
+                        }
+                        listenerComponent = new RefMetadataImpl(component);
+                    } else if (nodeNameEquals(e, BEAN_ELEMENT)) {
+                        if (listenerComponent != null) {
+                            throw new ComponentDefinitionException("Only one of " + REF_ATTRIBUTE + " attribute, " + REF_ELEMENT + ", " + BLUEPRINT_ELEMENT + ", " + REFERENCE_ELEMENT + ", " + SERVICE_ELEMENT + " or custom element can be set");
+                        }
+                        listenerComponent = parseBeanMetadata(e, false);
+                    } else if (nodeNameEquals(e, REFERENCE_ELEMENT)) {
+                        if (listenerComponent != null) {
+                            throw new ComponentDefinitionException("Only one of " + REF_ATTRIBUTE + " attribute, " + REF_ELEMENT + ", " + BLUEPRINT_ELEMENT + ", " + REFERENCE_ELEMENT + ", " + SERVICE_ELEMENT + " or custom element can be set");
+                        }
+                        listenerComponent = parseReference(e, false);
+                    } else if (nodeNameEquals(e, SERVICE_ELEMENT)) {
+                        if (listenerComponent != null) {
+                            throw new ComponentDefinitionException("Only one of " + REF_ATTRIBUTE + " attribute, " + REF_ELEMENT + ", " + BLUEPRINT_ELEMENT + ", " + REFERENCE_ELEMENT + ", " + SERVICE_ELEMENT + " or custom element can be set");
+                        }
+                        listenerComponent = parseService(e, false);
+                    }
+                } else {
+                    if (listenerComponent != null) {
+                        throw new ComponentDefinitionException("Only one of " + REF_ATTRIBUTE + " attribute, " + REF_ELEMENT + ", " + BLUEPRINT_ELEMENT + ", " + REFERENCE_ELEMENT + ", " + SERVICE_ELEMENT + " or custom element can be set");
+                    }
+                    listenerComponent = parseCustomElement(e, enclosingComponent);
+                }
+            }
+        }
+        if (listenerComponent == null) {
+            throw new ComponentDefinitionException("One of " + REF_ATTRIBUTE + " attribute, " + REF_ELEMENT + ", " + BLUEPRINT_ELEMENT + ", " + REFERENCE_ELEMENT + ", " + SERVICE_ELEMENT + " or custom element must be set");
+        }
+        listener.setListenerComponent((Target) listenerComponent);
+        return listener;
+    }
+
+    public List<String> parseInterfaceNames(Element element) {
+        List<String> interfaceNames = new ArrayList<String>();
+        NodeList nl = element.getChildNodes();
+        for (int i = 0; i < nl.getLength(); i++) {
+            Node node = nl.item(i);
+            if (node instanceof Element) {
+                Element e = (Element) node;
+                if (nodeNameEquals(e, VALUE_ELEMENT)) {
+                    String v = getTextValue(e).trim();
+                    if (interfaceNames.contains(v)) {
+                        throw new ComponentDefinitionException("The element " + INTERFACES_ELEMENT + " should not contain the same interface twice");
+                    }
+                    interfaceNames.add(getTextValue(e));
+                } else {
+                    throw new ComponentDefinitionException("Unsupported element " + e.getNodeName() + " inside an " + INTERFACES_ELEMENT + " element");
+                }
+            }
+        }
+        return interfaceNames;
+    }
+
+    private Metadata parseArgumentOrPropertyValue(Element element, ComponentMetadata enclosingComponent) {
+        Metadata [] values = new Metadata[3];
+        
+        if (element.hasAttribute(REF_ATTRIBUTE)) {
+            values[0] = new RefMetadataImpl(element.getAttribute(REF_ATTRIBUTE));
+        } 
+        
+        if (element.hasAttribute(VALUE_ATTRIBUTE)) {
+            values[1] = new ValueMetadataImpl(element.getAttribute(VALUE_ATTRIBUTE));
+        } 
+        
+        NodeList nl = element.getChildNodes();
+        for (int i = 0; i < nl.getLength(); i++) {
+            Node node = nl.item(i);
+            if (node instanceof Element) {
+                Element e = (Element) node;
+                if (isBlueprintNamespace(node.getNamespaceURI()) && nodeNameEquals(node, DESCRIPTION_ELEMENT)) {
+                    // Ignore description elements
+                } else {
+                    values[2] = parseValueGroup(e, enclosingComponent, null, true);                    
+                    break;
+                }
+            }
+        }
+        
+        Metadata value = null;
+        for (Metadata v : values) {
+            if (v != null) {
+                if (value == null) {
+                    value = v;
+                } else {
+                    throw new ComponentDefinitionException("Only one of " + REF_ATTRIBUTE + " attribute, " + VALUE_ATTRIBUTE + " attribute or sub element must be set");
+                }
+            }
+        }
+
+        if (value == null) {
+            throw new ComponentDefinitionException("One of " + REF_ATTRIBUTE + " attribute, " + VALUE_ATTRIBUTE + " attribute or sub element must be set");
+        }
+        
+        return value;
+    }
+
+    private Metadata parseValueGroup(Element element, ComponentMetadata enclosingComponent, String collectionType, boolean allowNull) {
+        if (isBlueprintNamespace(element.getNamespaceURI())) {
+            if (nodeNameEquals(element, BEAN_ELEMENT)) {
+                return parseBeanMetadata(element, false);
+            } else if (nodeNameEquals(element, REFERENCE_ELEMENT)) {
+                return parseReference(element, false);
+            } else if (nodeNameEquals(element, SERVICE_ELEMENT)) {
+                return parseService(element, false);
+            } else if (nodeNameEquals(element, REFERENCE_LIST_ELEMENT) ) {
+                return parseRefList(element, false);
+            } else if (nodeNameEquals(element, NULL_ELEMENT) && allowNull) {
+                return NullMetadata.NULL;
+            } else if (nodeNameEquals(element, VALUE_ELEMENT)) {
+                return parseValue(element, collectionType);
+            } else if (nodeNameEquals(element, REF_ELEMENT)) {
+                return parseRef(element);
+            } else if (nodeNameEquals(element, IDREF_ELEMENT)) {
+                return parseIdRef(element);
+            } else if (nodeNameEquals(element, LIST_ELEMENT)) {
+                return parseList(element, enclosingComponent);
+            } else if (nodeNameEquals(element, SET_ELEMENT)) {
+                return parseSet(element, enclosingComponent);
+            } else if (nodeNameEquals(element, MAP_ELEMENT)) {
+                return parseMap(element, enclosingComponent);
+            } else if (nodeNameEquals(element, PROPS_ELEMENT)) {
+                return parseProps(element);
+            } else if (nodeNameEquals(element, ARRAY_ELEMENT)) {
+                return parseArray(element, enclosingComponent);
+            } else {
+                throw new ComponentDefinitionException("Unknown blueprint element " + element.getNodeName());
+            }
+        } else {
+            return parseCustomElement(element, enclosingComponent);
+        }
+    }
+
+    private ValueMetadata parseValue(Element element, String collectionType) {
+        String type;
+        if (element.hasAttribute(TYPE_ATTRIBUTE)) {
+            type = element.getAttribute(TYPE_ATTRIBUTE);
+        } else {
+            type = collectionType;
+        }
+        return new ValueMetadataImpl(getTextValue(element), type);
+    }
+
+    private RefMetadata parseRef(Element element) {
+        String component = element.getAttribute(COMPONENT_ID_ATTRIBUTE);
+        if (component == null || component.length() == 0) {
+            throw new ComponentDefinitionException("Element " + REF_ELEMENT + " must have a valid " + COMPONENT_ID_ATTRIBUTE + " attribute");
+        }
+        return new RefMetadataImpl(component);
+    }
+    private Metadata parseIdRef(Element element) {
+        String component = element.getAttribute(COMPONENT_ID_ATTRIBUTE);
+        if (component == null || component.length() == 0) {
+            throw new ComponentDefinitionException("Element " + IDREF_ELEMENT + " must have a valid " + COMPONENT_ID_ATTRIBUTE + " attribute");
+        }
+        return new IdRefMetadataImpl(component);
+    }
+
+    private int parseActivation(Element element) {
+        String initialization = element.hasAttribute(ACTIVATION_ATTRIBUTE) ? element.getAttribute(ACTIVATION_ATTRIBUTE) : defaultActivation;
+        if (ACTIVATION_EAGER.equals(initialization)) {
+            return ComponentMetadata.ACTIVATION_EAGER;
+        } else if (ACTIVATION_LAZY.equals(initialization)) {
+            return ComponentMetadata.ACTIVATION_LAZY;
+        } else {
+            throw new ComponentDefinitionException("Attribute " + ACTIVATION_ATTRIBUTE + " must be equal to " + ACTIVATION_EAGER + " or " + ACTIVATION_LAZY);
+        }
+    }
+    
+    private ComponentMetadata handleCustomAttributes(NamedNodeMap attributes, ComponentMetadata enclosingComponent) {
+        if (attributes != null) {
+            for (int i = 0; i < attributes.getLength(); i++) {
+                Node node = attributes.item(i);
+                //attr is custom if it has a namespace, and it isnt blueprint, or the xmlns ns. 
+                //blueprint ns would be an error, as blueprint attrs are unqualified.
+                if (node instanceof Attr && 
+                    node.getNamespaceURI() != null && 
+                    !isBlueprintNamespace(node.getNamespaceURI()) &&
+                    !isIgnorableAttributeNamespace(node.getNamespaceURI()) ) {
+                    enclosingComponent = decorateCustomNode(node, enclosingComponent);
+                }
+            }
+        }
+        return enclosingComponent;
+    }
+    
+    private ComponentMetadata handleCustomElements(Element element, ComponentMetadata enclosingComponent) {
+        NodeList nl = element.getChildNodes();
+        for (int i = 0; i < nl.getLength(); i++) {
+            Node node = nl.item(i);
+            if (node instanceof Element) {
+                if (!isBlueprintNamespace(node.getNamespaceURI())) {
+                    enclosingComponent = decorateCustomNode(node, enclosingComponent);
+                }
+            }
+        }
+        return enclosingComponent;
+    }
+    
+    private ComponentMetadata decorateCustomNode(Node node, ComponentMetadata enclosingComponent) {
+        NamespaceHandler handler = getNamespaceHandler(node);
+        ParserContextImpl context = new ParserContextImpl(this, registry, enclosingComponent, node);
+        return handler.decorate(node, enclosingComponent, context);
+    }
+
+    private Metadata parseCustomElement(Element element, ComponentMetadata enclosingComponent) {
+        NamespaceHandler handler = getNamespaceHandler(element);
+        ParserContextImpl context = new ParserContextImpl(this, registry, enclosingComponent, element);
+        return handler.parse(element, context);
+    }
+
+    private NamespaceHandler getNamespaceHandler(Node node) {
+        URI ns = URI.create(node.getNamespaceURI());
+        return getNamespaceHandler(ns);
+    }
+
+    private NamespaceHandler getNamespaceHandler(URI uri) {
+        if (handlers == null) {
+            throw new ComponentDefinitionException("Unsupported node (namespace handler registry is not set): " + uri);
+        }
+        NamespaceHandler handler = this.handlers.getNamespaceHandler(uri);
+        if (handler == null) {
+            throw new ComponentDefinitionException("Unsupported node namespace: " + uri);
+        }
+        return handler;
+    }
+
+    public String generateId() {
+        String id;
+        do {
+            id = "." + idPrefix + ++idCounter;
+        } while (ids.contains(id));
+        ids.add(id);
+        return id;        
+    }
+    
+    public String getId(Element element) {
+        String id;
+        if (element.hasAttribute(ID_ATTRIBUTE)) {
+            id = element.getAttribute(ID_ATTRIBUTE);
+            ids.add(id);
+        } else {
+            id = generateId();
+        }
+        return id;
+    }
+
+    public static boolean isBlueprintNamespace(String ns) {
+        return BLUEPRINT_NAMESPACE.equals(ns);
+    }
+
+    /**
+     * Test if this namespace uri does not require a Namespace Handler.<p>
+     *      <li>    XMLConstants.RELAXNG_NS_URI
+     *      <li>    XMLConstants.W3C_XML_SCHEMA_INSTANCE_NS_URI
+     *      <li>    XMLConstants.W3C_XML_SCHEMA_NS_URI
+     *      <li>    XMLConstants.W3C_XPATH_DATATYPE_NS_URI
+     *      <li>    XMLConstants.W3C_XPATH_DATATYPE_NS_URI
+     *      <li>    XMLConstants.XML_DTD_NS_URI
+     *      <li>    XMLConstants.XML_NS_URI
+     *      <li>    XMLConstants.XMLNS_ATTRIBUTE_NS_URI
+     * @param ns URI to be tested.
+     * @return true if the uri does not require a namespace handler.
+     */
+    public static boolean isIgnorableAttributeNamespace(String ns) {
+        return XMLConstants.RELAXNG_NS_URI.equals(ns) ||
+               XMLConstants.W3C_XML_SCHEMA_INSTANCE_NS_URI.equals(ns) || 
+               XMLConstants.W3C_XML_SCHEMA_NS_URI.equals(ns) ||
+               XMLConstants.W3C_XPATH_DATATYPE_NS_URI.equals(ns) ||
+               XMLConstants.W3C_XPATH_DATATYPE_NS_URI.equals(ns) ||
+               XMLConstants.XML_DTD_NS_URI.equals(ns) ||
+               XMLConstants.XML_NS_URI.equals(ns) || 
+               XMLConstants.XMLNS_ATTRIBUTE_NS_URI.equals(ns);
+    }
+    
+    private static boolean nodeNameEquals(Node node, String name) {
+        return (name.equals(node.getNodeName()) || name.equals(node.getLocalName()));
+    }
+
+    private static List<String> parseList(String list) {
+        String[] items = list.split(" ");
+        List<String> set = new ArrayList<String>();
+        for (String item : items) {
+            item = item.trim();
+            if (item.length() > 0) {
+                set.add(item);
+            }
+        }
+        return set;                   
+    }
+
+    private static String getTextValue(Element element) {
+        StringBuffer value = new StringBuffer();
+        NodeList nl = element.getChildNodes();
+        for (int i = 0; i < nl.getLength(); i++) {
+            Node item = nl.item(i);
+            if ((item instanceof CharacterData && !(item instanceof Comment)) || item instanceof EntityReference) {
+                value.append(item.getNodeValue());
+            }
+        }
+        return value.toString();
+    }
+
+    private static DocumentBuilderFactory getDocumentBuilderFactory() {
+        if (documentBuilderFactory == null) {
+            DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
+            dbf.setNamespaceAware(true);
+            documentBuilderFactory = dbf;
+        }
+        return documentBuilderFactory;
+    }
+
+}

Added: aries/tags/blueprint-0.2-incubating/blueprint-core/src/main/java/org/apache/aries/blueprint/container/ParserContextImpl.java
URL: http://svn.apache.org/viewvc/aries/tags/blueprint-0.2-incubating/blueprint-core/src/main/java/org/apache/aries/blueprint/container/ParserContextImpl.java?rev=1075139&view=auto
==============================================================================
--- aries/tags/blueprint-0.2-incubating/blueprint-core/src/main/java/org/apache/aries/blueprint/container/ParserContextImpl.java (added)
+++ aries/tags/blueprint-0.2-incubating/blueprint-core/src/main/java/org/apache/aries/blueprint/container/ParserContextImpl.java Sun Feb 27 20:35:36 2011
@@ -0,0 +1,91 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.aries.blueprint.container;
+
+import org.apache.aries.blueprint.ComponentDefinitionRegistry;
+import org.apache.aries.blueprint.ParserContext;
+import org.apache.aries.blueprint.reflect.MetadataUtil;
+import org.osgi.service.blueprint.reflect.ComponentMetadata;
+import org.osgi.service.blueprint.reflect.Metadata;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+
+/**
+ * A simple ParserContext implementation.
+ * 
+ * This class is supposed to be short lived and only used for calling a given namespace handler.
+ *
+ * @version $Rev: 896324 $, $Date: 2010-01-06 06:05:04 +0000 (Wed, 06 Jan 2010) $
+ */
+public class ParserContextImpl implements ParserContext {    
+    private final Parser parser;
+    private final ComponentDefinitionRegistry componentDefinitionRegistry;
+    private final ComponentMetadata enclosingComponent;
+    private final Node sourceNode;
+
+    public ParserContextImpl(Parser parser,
+                             ComponentDefinitionRegistry componentDefinitionRegistry,
+                             ComponentMetadata enclosingComponent,
+                             Node sourceNode) {
+        this.parser = parser;
+        this.componentDefinitionRegistry = componentDefinitionRegistry;
+        this.enclosingComponent = enclosingComponent;
+        this.sourceNode = sourceNode;
+    }
+
+    public ComponentDefinitionRegistry getComponentDefinitionRegistry() {
+        return componentDefinitionRegistry;
+    }
+
+    public ComponentMetadata getEnclosingComponent() {
+        return enclosingComponent;
+    }
+
+    public Node getSourceNode() {
+        return sourceNode;
+    }
+
+    public <T extends Metadata> T createMetadata(Class<T> type) {
+        return MetadataUtil.createMetadata(type);
+    }
+
+    public <T> T parseElement(Class<T> type, ComponentMetadata enclosingComponent, Element element) {
+        return parser.parseElement(type, enclosingComponent, element);
+    }
+    
+    public Parser getParser() {
+        return parser;
+    }
+    
+    public String generateId() {
+        return parser.generateId();
+    }
+
+    public String getDefaultActivation() {
+        return parser.getDefaultActivation();
+    }
+
+    public String getDefaultAvailability() {
+        return parser.getDefaultAvailability();
+    }
+
+    public String getDefaultTimeout() {
+        return parser.getDefaultTimeout();
+    }
+}

Added: aries/tags/blueprint-0.2-incubating/blueprint-core/src/main/java/org/apache/aries/blueprint/container/ParserServiceImpl.java
URL: http://svn.apache.org/viewvc/aries/tags/blueprint-0.2-incubating/blueprint-core/src/main/java/org/apache/aries/blueprint/container/ParserServiceImpl.java?rev=1075139&view=auto
==============================================================================
--- aries/tags/blueprint-0.2-incubating/blueprint-core/src/main/java/org/apache/aries/blueprint/container/ParserServiceImpl.java (added)
+++ aries/tags/blueprint-0.2-incubating/blueprint-core/src/main/java/org/apache/aries/blueprint/container/ParserServiceImpl.java Sun Feb 27 20:35:36 2011
@@ -0,0 +1,91 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one or more
+ *  contributor license agreements.  See the NOTICE file distributed with
+ *  this work for additional information regarding copyright ownership.
+ *  The ASF licenses this file to You under the Apache License, Version 2.0
+ *  (the "License"); you may not use this file except in compliance with
+ *  the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.apache.aries.blueprint.container;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URI;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Set;
+
+import org.apache.aries.blueprint.ComponentDefinitionRegistry;
+import org.apache.aries.blueprint.ParserService;
+import org.apache.aries.blueprint.container.NamespaceHandlerRegistry.NamespaceHandlerSet;
+import org.apache.aries.blueprint.namespace.ComponentDefinitionRegistryImpl;
+import org.osgi.framework.Bundle;
+import org.xml.sax.SAXException;
+
+public class ParserServiceImpl implements ParserService {
+
+	NamespaceHandlerRegistry _namespaceHandlerRegistry;
+	
+	public ParserServiceImpl (NamespaceHandlerRegistry nhr) { 
+		_namespaceHandlerRegistry = nhr;
+	}
+	
+	public ComponentDefinitionRegistry parse(URL url, Bundle clientBundle) throws Exception {
+    return parse (url, clientBundle, false);
+  }
+
+  public ComponentDefinitionRegistry parse(URL url, Bundle clientBundle, boolean validate)
+      throws Exception {
+    List<URL> urls = new ArrayList<URL>();
+    urls.add(url);
+    return parse (urls, clientBundle, validate);
+  }
+  
+  public ComponentDefinitionRegistry parse(List<URL> urls, Bundle clientBundle) throws Exception {
+    return parse(urls, clientBundle, false);
+  }
+  
+	public ComponentDefinitionRegistry parse(List<URL> urls, Bundle clientBundle, boolean validate) throws Exception {
+	  Parser parser = new Parser();   
+	  parser.parse(urls);
+	  return validateAndPopulate (parser, clientBundle, validate);
+	}
+	
+  public ComponentDefinitionRegistry parse(InputStream is, Bundle clientBundle) throws Exception {
+    return parse (is, clientBundle, false);
+  }
+  
+  public ComponentDefinitionRegistry parse(InputStream is, Bundle clientBundle, boolean validate) throws Exception {
+    Parser parser = new Parser();
+    parser.parse(is);
+    return validateAndPopulate (parser, clientBundle, validate);
+  }
+    
+  private ComponentDefinitionRegistry validateAndPopulate (Parser parser, Bundle clientBundle, boolean validate) 
+  throws IOException, SAXException { 
+    Set<URI> nsuris = parser.getNamespaces();
+    ComponentDefinitionRegistry cdr;
+    NamespaceHandlerSet nshandlers = _namespaceHandlerRegistry.getNamespaceHandlers(nsuris, clientBundle);
+    try {
+        if (validate) { 
+          parser.validate( nshandlers.getSchema());
+        }
+        cdr = new ComponentDefinitionRegistryImpl();
+        parser.populate(nshandlers, cdr);
+    } finally {
+        nshandlers.destroy();
+    }
+    
+    return cdr;   
+  }
+
+}



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