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From simonetrip...@apache.org
Subject svn commit: r1329308 - in /cocoon/cocoon3/trunk/cocoon-sax/src: main/java/org/apache/cocoon/sax/util/SAXEventsBuilder.java test/java/org/apache/cocoon/sax/util/SAXEventsBuilderTestCase.java
Date Mon, 23 Apr 2012 15:58:44 GMT
Author: simonetripodi
Date: Mon Apr 23 15:58:43 2012
New Revision: 1329308

URL: http://svn.apache.org/viewvc?rev=1329308&view=rev
Log:
added a simple yet powerful SAX ContentHandler wrapper to assist manual SAX events generation

Added:
    cocoon/cocoon3/trunk/cocoon-sax/src/main/java/org/apache/cocoon/sax/util/SAXEventsBuilder.java
  (with props)
    cocoon/cocoon3/trunk/cocoon-sax/src/test/java/org/apache/cocoon/sax/util/SAXEventsBuilderTestCase.java
  (with props)

Added: cocoon/cocoon3/trunk/cocoon-sax/src/main/java/org/apache/cocoon/sax/util/SAXEventsBuilder.java
URL: http://svn.apache.org/viewvc/cocoon/cocoon3/trunk/cocoon-sax/src/main/java/org/apache/cocoon/sax/util/SAXEventsBuilder.java?rev=1329308&view=auto
==============================================================================
--- cocoon/cocoon3/trunk/cocoon-sax/src/main/java/org/apache/cocoon/sax/util/SAXEventsBuilder.java
(added)
+++ cocoon/cocoon3/trunk/cocoon-sax/src/main/java/org/apache/cocoon/sax/util/SAXEventsBuilder.java
Mon Apr 23 15:58:43 2012
@@ -0,0 +1,168 @@
+/*
+ * 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.cocoon.sax.util;
+
+import org.apache.cocoon.xml.sax.AttributesImpl;
+import org.xml.sax.ContentHandler;
+import org.xml.sax.SAXException;
+
+public class SAXEventsBuilder
+{
+
+    private static final String EMPTY_NS = "";
+
+    private static final String CDATA_TYPE = "CDATA";
+
+    public static SAXEventsBuilder newDocument( ContentHandler contentHandler )
+        throws SAXException
+    {
+        contentHandler.startDocument();
+        return wrap( contentHandler );
+    }
+
+    public static SAXEventsBuilder wrap( ContentHandler contentHandler )
+    {
+        return new SAXEventsBuilder( null, null, null, null, contentHandler );
+    }
+
+    public static <T> Attribute attribute( String name, T value )
+    {
+        return attribute( EMPTY_NS, name, name, CDATA_TYPE, value );
+    }
+
+    public static <T> Attribute attribute( String uri, String localName, String qName,
String type, T value )
+    {
+        return new Attribute( uri, localName, qName, type, String.valueOf( value ) );
+    }
+
+    private final SAXEventsBuilder previous;
+
+    protected final String uri;
+
+    protected final String localName;
+
+    protected final String qName;
+
+    protected final ContentHandler contentHandler;
+
+    /**
+     * Hidden constructor, this class cannot be instantiated earlier;
+     */
+    private SAXEventsBuilder( SAXEventsBuilder previous, String uri, String localName, String
qName, ContentHandler contentHandler )
+    {
+        this.previous = previous;
+        this.uri = uri;
+        this.localName = localName;
+        this.qName = qName;
+        this.contentHandler = contentHandler;
+    }
+
+    public SAXEventsBuilder start( String localName, Attribute...attributes )
+        throws SAXException
+    {
+        return start( EMPTY_NS, localName, localName, attributes );
+    }
+
+    public SAXEventsBuilder start( String uri, String localName, String qName, Attribute...attributes
)
+        throws SAXException
+    {
+        AttributesImpl atts = new AttributesImpl();
+
+        for ( Attribute attribute : attributes )
+        {
+            atts.addAttribute( attribute.uri, attribute.getLocalName(), attribute.getqName(),
attribute.getType(), attribute.getValue() );
+        }
+
+        contentHandler.startElement( uri, localName, qName, atts );
+        return new SAXEventsBuilder( this, uri, localName, qName, contentHandler );
+    }
+
+    public <T> SAXEventsBuilder body( T elementBody )
+        throws SAXException
+    {
+        if ( elementBody == null )
+        {
+            return this;
+        }
+        String elementStringBody = String.valueOf( elementBody );
+        contentHandler.characters( elementStringBody.toCharArray(), 0, elementStringBody.length()
);
+        return this;
+    }
+
+    public SAXEventsBuilder end()
+        throws SAXException
+    {
+        contentHandler.endElement( uri, localName, qName );
+        return previous;
+    }
+
+    public void endDocument()
+        throws SAXException
+    {
+        contentHandler.endDocument();
+    }
+
+    public static final class Attribute
+    {
+
+        private final String uri;
+
+        private final String localName;
+
+        private final String qName;
+
+        private final String type;
+
+        private final String value;
+
+        private Attribute( String uri, String localName, String qName, String type, String
value )
+        {
+            this.uri = uri;
+            this.localName = localName;
+            this.qName = qName;
+            this.type = type;
+            this.value = value;
+        }
+
+        public String getUri()
+        {
+            return uri;
+        }
+
+        public String getLocalName()
+        {
+            return localName;
+        }
+
+        public String getqName()
+        {
+            return qName;
+        }
+
+        public String getType()
+        {
+            return type;
+        }
+
+        public String getValue()
+        {
+            return value;
+        }
+
+    }
+
+}

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Added: cocoon/cocoon3/trunk/cocoon-sax/src/test/java/org/apache/cocoon/sax/util/SAXEventsBuilderTestCase.java
URL: http://svn.apache.org/viewvc/cocoon/cocoon3/trunk/cocoon-sax/src/test/java/org/apache/cocoon/sax/util/SAXEventsBuilderTestCase.java?rev=1329308&view=auto
==============================================================================
--- cocoon/cocoon3/trunk/cocoon-sax/src/test/java/org/apache/cocoon/sax/util/SAXEventsBuilderTestCase.java
(added)
+++ cocoon/cocoon3/trunk/cocoon-sax/src/test/java/org/apache/cocoon/sax/util/SAXEventsBuilderTestCase.java
Mon Apr 23 15:58:43 2012
@@ -0,0 +1,71 @@
+/*
+ * 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.cocoon.sax.util;
+
+import static junit.framework.Assert.assertTrue;
+import static org.apache.cocoon.sax.util.SAXEventsBuilder.newDocument;
+
+import java.io.ByteArrayOutputStream;
+
+import javax.xml.transform.TransformerFactory;
+import javax.xml.transform.sax.SAXTransformerFactory;
+import javax.xml.transform.sax.TransformerHandler;
+import javax.xml.transform.stream.StreamResult;
+
+import org.custommonkey.xmlunit.Diff;
+import org.junit.Test;
+
+public final class SAXEventsBuilderTestCase
+{
+
+    @Test
+    public void pomAlike()
+        throws Exception
+    {
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+
+        SAXTransformerFactory transformerFactory = (SAXTransformerFactory) TransformerFactory.newInstance();
+        TransformerHandler transformerHandler = transformerFactory.newTransformerHandler();
+        transformerHandler.setResult( new StreamResult( baos ) );
+
+        newDocument( transformerHandler )
+            .start( "project" )
+                .start( "modelVersion" ).body( "4.0.0" ).end()
+                .start( "groupId" ).body( "org.apache.cocoon.sax" ).end()
+                .start( "artifactId" ).body( "cocoon-sax" ).end()
+                .start( "version" ).body( "3.0.0-beta-1" ).end()
+                .start( "dependencies" )
+                    .start( "dependency" )
+                        .start( "groupId" ).body( "org.apache.cocoon.pipeline" ).end()
+                        .start( "artifactId" ).body( "cocoon-pipeline" ).end()
+                    .end()
+                    .start( "dependency" )
+                        .start( "groupId" ).body( "org.apache.cocoon" ).end()
+                        .start( "artifactId" ).body( "cocoon-xml" ).end()
+                    .end()
+                .end()
+            .end()
+        .endDocument();
+
+        String expected = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><project><modelVersion>4.0.0</modelVersion><groupId>org.apache.cocoon.sax</groupId><artifactId>cocoon-sax</artifactId><version>3.0.0-beta-1</version><dependencies><dependency><groupId>org.apache.cocoon.pipeline</groupId><artifactId>cocoon-pipeline</artifactId></dependency><dependency><groupId>org.apache.cocoon</groupId><artifactId>cocoon-xml</artifactId></dependency></dependencies></project>";
+        String actual = new String(baos.toByteArray());
+
+        Diff diff = new Diff(expected, actual);
+        assertTrue( "SAX wrapper didn't work as expected " + diff, diff.identical() );
+    }
+
+}

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