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Posted to commits@maven.apache.org by rf...@apache.org on 2012/11/25 20:15:48 UTC

svn commit: r1413392 - in /maven/plugins/trunk/maven-shade-plugin/src: it/plugin-descriptor-relocation/ it/plugin-descriptor-relocation/repo/ it/plugin-descriptor-relocation/repo/org/ it/plugin-descriptor-relocation/repo/org/apache/ it/plugin-descripto...

Author: rfscholte
Date: Sun Nov 25 19:15:46 2012
New Revision: 1413392

URL: http://svn.apache.org/viewvc?rev=1413392&view=rev
Log:
[MSHADE-135] Add PluginXmlTransformer 

Added:
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/pom.xml
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/its/
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/its/shade/
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/its/shade/cdr/
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/its/shade/cdr/comp/
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/its/shade/cdr/comp/0.1/
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/its/shade/cdr/comp/0.1/comp-0.1.jar   (with props)
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/its/shade/cdr/comp/0.1/comp-0.1.pom
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/its/shade/cdr/comp/maven-metadata.xml
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/src/
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/src/main/
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/src/main/java/
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/src/main/java/org/
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/src/main/java/org/apache/
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/src/main/java/org/apache/maven/
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/src/main/java/org/apache/maven/test/
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/src/main/java/org/apache/maven/test/Entry.java
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/src/main/java/org/apache/maven/test/TestMojo.java
    maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/verify.groovy
    maven/plugins/trunk/maven-shade-plugin/src/main/java/org/apache/maven/plugins/shade/resource/PluginXmlResourceTransformer.java

Added: maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/pom.xml
URL: http://svn.apache.org/viewvc/maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/pom.xml?rev=1413392&view=auto
==============================================================================
--- maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/pom.xml (added)
+++ maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/pom.xml Sun Nov 25 19:15:46 2012
@@ -0,0 +1,126 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!--
+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.
+-->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>org.apache.maven.its.shade.cdr</groupId>
+  <artifactId>mshade-135</artifactId>
+  <version>1.0</version>
+  <packaging>maven-plugin</packaging>
+
+  <name>MSHADE-135</name>
+  <description>
+    Test that plugin descriptors get adjusted to account for relocation of role/impl classes.
+  </description>
+
+  <repositories>
+    <repository>
+      <id>shade-it</id>
+      <url>file:///${basedir}/repo</url>
+      <releases>
+        <checksumPolicy>ignore</checksumPolicy>
+      </releases>
+      <snapshots>
+        <enabled>false</enabled>
+      </snapshots>
+    </repository>
+  </repositories>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.apache.maven.its.shade.cdr</groupId>
+      <artifactId>comp</artifactId>
+      <version>0.1</version>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.maven</groupId>
+      <artifactId>maven-plugin-api</artifactId>
+      <version>3.0</version>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.maven.plugin-tools</groupId>
+      <artifactId>maven-plugin-annotations</artifactId>
+      <version>3.2</version>
+      <scope>provided</scope>
+     </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <version>2.3.2</version>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-plugin-plugin</artifactId>
+        <version>3.2</version>
+        <configuration>
+          <skipErrorNoDescriptorsFound>true</skipErrorNoDescriptorsFound>
+        </configuration>
+        <executions>
+          <execution>
+            <id>mojo-descriptor</id>
+            <goals>
+              <goal>descriptor</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-shade-plugin</artifactId>
+        <version>@project.version@</version>
+        <executions>
+          <execution>
+            <id>shade</id>
+            <phase>package</phase>
+            <goals>
+              <goal>shade</goal>
+            </goals>
+            <configuration>
+              <createDependencyReducedPom>false</createDependencyReducedPom>
+              <relocations>
+                <relocation>
+                  <pattern>org.apache.maven.component.api</pattern>
+                  <shadedPattern>hidden.api</shadedPattern>
+                </relocation>
+                <relocation>
+                  <pattern>org.apache.maven.component.impl</pattern>
+                  <shadedPattern>hidden.impl</shadedPattern>
+                </relocation>
+                <relocation>
+                  <pattern>org.apache.maven.test</pattern>
+                  <shadedPattern>hidden.impl</shadedPattern>
+                </relocation>
+              </relocations>
+              <transformers>
+                <transformer implementation="org.apache.maven.plugins.shade.resource.PluginXmlResourceTransformer"/>
+              </transformers>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+</project>

Added: maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/its/shade/cdr/comp/0.1/comp-0.1.jar
URL: http://svn.apache.org/viewvc/maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/its/shade/cdr/comp/0.1/comp-0.1.jar?rev=1413392&view=auto
==============================================================================
Binary file - no diff available.

Propchange: maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/its/shade/cdr/comp/0.1/comp-0.1.jar
------------------------------------------------------------------------------
    svn:mime-type = application/octet-stream

Added: maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/its/shade/cdr/comp/0.1/comp-0.1.pom
URL: http://svn.apache.org/viewvc/maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/its/shade/cdr/comp/0.1/comp-0.1.pom?rev=1413392&view=auto
==============================================================================
--- maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/its/shade/cdr/comp/0.1/comp-0.1.pom (added)
+++ maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/its/shade/cdr/comp/0.1/comp-0.1.pom Sun Nov 25 19:15:46 2012
@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!--
+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.
+-->
+
+<project>
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>org.apache.maven.its.shade.cdr</groupId>
+  <artifactId>comp</artifactId>
+  <version>0.1</version>
+  <packaging>jar</packaging>
+
+  <distributionManagement>
+    <repository>
+      <id>maven-core-it</id>
+      <url>file:///${basedir}/repo</url>
+    </repository>
+  </distributionManagement>
+
+  <build>
+    <resources>
+      <resource>
+        <directory>.</directory>
+        <includes>
+          <include>pom.xml</include>
+          <include>src/**</include>
+        </includes>
+      </resource>
+      <resource>
+        <directory>src/main/resources</directory>
+      </resource>
+    </resources>
+  </build>
+</project>

Added: maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/its/shade/cdr/comp/maven-metadata.xml
URL: http://svn.apache.org/viewvc/maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/its/shade/cdr/comp/maven-metadata.xml?rev=1413392&view=auto
==============================================================================
--- maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/its/shade/cdr/comp/maven-metadata.xml (added)
+++ maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/repo/org/apache/maven/its/shade/cdr/comp/maven-metadata.xml Sun Nov 25 19:15:46 2012
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<metadata>
+  <groupId>org.apache.maven.its.shade.cdr</groupId>
+  <artifactId>comp</artifactId>
+  <version>0.1</version>
+  <versioning>
+    <versions>
+      <version>0.1</version>
+    </versions>
+    <lastUpdated>20091230143912</lastUpdated>
+  </versioning>
+</metadata>

Added: maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/src/main/java/org/apache/maven/test/Entry.java
URL: http://svn.apache.org/viewvc/maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/src/main/java/org/apache/maven/test/Entry.java?rev=1413392&view=auto
==============================================================================
--- maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/src/main/java/org/apache/maven/test/Entry.java (added)
+++ maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/src/main/java/org/apache/maven/test/Entry.java Sun Nov 25 19:15:46 2012
@@ -0,0 +1,25 @@
+package org.apache.maven.test;
+
+/*
+ * 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.
+ */
+
+public class Entry 
+{
+    
+}
\ No newline at end of file

Added: maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/src/main/java/org/apache/maven/test/TestMojo.java
URL: http://svn.apache.org/viewvc/maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/src/main/java/org/apache/maven/test/TestMojo.java?rev=1413392&view=auto
==============================================================================
--- maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/src/main/java/org/apache/maven/test/TestMojo.java (added)
+++ maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/src/main/java/org/apache/maven/test/TestMojo.java Sun Nov 25 19:15:46 2012
@@ -0,0 +1,46 @@
+package org.apache.maven.test;
+
+/*
+ * 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.
+ */
+
+import java.util.List;
+
+import org.apache.maven.plugin.AbstractMojo;
+import org.apache.maven.plugin.MojoExecutionException;
+import org.apache.maven.plugin.MojoFailureException;
+import org.apache.maven.plugins.annotations.Component;
+import org.apache.maven.plugins.annotations.Mojo;
+import org.apache.maven.plugins.annotations.Parameter;
+
+@Mojo( name = "test"  )
+public class TestMojo extends AbstractMojo
+{
+    @Component
+    private org.apache.maven.component.api.Component component;
+    
+    @Parameter
+    private Entry entry;
+    
+    public void execute()
+        throws MojoExecutionException, MojoFailureException
+    {
+        
+    }
+
+}

Added: maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/verify.groovy
URL: http://svn.apache.org/viewvc/maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/verify.groovy?rev=1413392&view=auto
==============================================================================
--- maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/verify.groovy (added)
+++ maven/plugins/trunk/maven-shade-plugin/src/it/plugin-descriptor-relocation/verify.groovy Sun Nov 25 19:15:46 2012
@@ -0,0 +1,24 @@
+/*
+ * 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.
+ */
+def shadedJar = new File( basedir, "target/mshade-135-1.0.jar")
+def pluginXml = new URL( "jar:" + shadedJar.toURL() + "!/META-INF/maven/plugin.xml" )
+def plugin = new XmlSlurper().parse( pluginXml.openStream() );
+assert plugin.mojos.mojo[0].implementation == "hidden.impl.TestMojo";
+assert plugin.mojos.mojo[0].parameters.parameter[0].type == "hidden.impl.Entry";
+assert plugin.mojos.mojo[0].requirements.requirement[0].role == "hidden.api.Component"; 
\ No newline at end of file

Added: maven/plugins/trunk/maven-shade-plugin/src/main/java/org/apache/maven/plugins/shade/resource/PluginXmlResourceTransformer.java
URL: http://svn.apache.org/viewvc/maven/plugins/trunk/maven-shade-plugin/src/main/java/org/apache/maven/plugins/shade/resource/PluginXmlResourceTransformer.java?rev=1413392&view=auto
==============================================================================
--- maven/plugins/trunk/maven-shade-plugin/src/main/java/org/apache/maven/plugins/shade/resource/PluginXmlResourceTransformer.java (added)
+++ maven/plugins/trunk/maven-shade-plugin/src/main/java/org/apache/maven/plugins/shade/resource/PluginXmlResourceTransformer.java Sun Nov 25 19:15:46 2012
@@ -0,0 +1,231 @@
+package org.apache.maven.plugins.shade.resource;
+
+/*
+ * 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.
+ */
+
+import java.io.BufferedInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.Reader;
+import java.io.Writer;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.jar.JarEntry;
+import java.util.jar.JarOutputStream;
+
+import org.apache.maven.plugins.shade.relocation.Relocator;
+import org.codehaus.plexus.util.IOUtil;
+import org.codehaus.plexus.util.ReaderFactory;
+import org.codehaus.plexus.util.WriterFactory;
+import org.codehaus.plexus.util.xml.Xpp3Dom;
+import org.codehaus.plexus.util.xml.Xpp3DomBuilder;
+import org.codehaus.plexus.util.xml.Xpp3DomWriter;
+
+/**
+ * A resource processor that aggregates Maven <code>plugin.xml</code> files.
+ * 
+ * @author Robert Scholte
+ * @since 3.0
+ */
+public class PluginXmlResourceTransformer
+    implements ResourceTransformer
+{
+    private List<Xpp3Dom> mojos = new LinkedList<Xpp3Dom>();
+
+    public static final String PLUGIN_XML_PATH = "META-INF/maven/plugin.xml";
+
+    public boolean canTransformResource( String resource )
+    {
+        return PLUGIN_XML_PATH.equals( resource );
+    }
+
+    public void processResource( String resource, InputStream is, List<Relocator> relocators )
+        throws IOException
+    {
+        Xpp3Dom newDom;
+
+        try
+        {
+            BufferedInputStream bis = new BufferedInputStream( is )
+            {
+                public void close()
+                    throws IOException
+                {
+                    // leave ZIP open
+                }
+            };
+
+            Reader reader = ReaderFactory.newXmlReader( bis );
+
+            newDom = Xpp3DomBuilder.build( reader );
+        }
+        catch ( Exception e )
+        {
+            throw (IOException) new IOException( "Error parsing plugin.xml in " + is ).initCause( e );
+        }
+
+        // Only try to merge in mojos if there are some elements in the plugin
+        if ( newDom.getChild( "mojos" ) == null )
+        {
+            return;
+        }
+
+        for ( Xpp3Dom mojo : newDom.getChild( "mojos" ).getChildren( "mojo" ) )
+        {
+
+            String impl = getValue( mojo, "implementation" );
+            impl = getRelocatedClass( impl, relocators );
+            setValue( mojo, "implementation", impl );
+
+            Xpp3Dom parameters = mojo.getChild( "parameters" );
+            if ( parameters != null )
+            {
+                for ( Xpp3Dom parameter : parameters.getChildren() )
+                {
+                    String type = getValue( parameter, "type" );
+                    type = getRelocatedClass( type, relocators );
+                    setValue( parameter, "type", type );
+                }
+            }
+
+            Xpp3Dom configuration = mojo.getChild( "configuration" );
+            if ( configuration != null )
+            {
+                for ( Xpp3Dom configurationEntry : configuration.getChildren() )
+                {
+                    String implementation = getAttribute( configurationEntry, "implementation" );
+                    implementation = getRelocatedClass( implementation, relocators );
+                    setAttribute( configurationEntry, "implementation", implementation );
+                }
+            }
+
+            Xpp3Dom requirements = mojo.getChild( "requirements" );
+            if ( requirements != null && requirements.getChildCount() > 0 )
+            {
+                for ( Xpp3Dom requirement : requirements.getChildren() )
+                {
+                    String requiredRole = getValue( requirement, "role" );
+                    requiredRole = getRelocatedClass( requiredRole, relocators );
+                    setValue( requirement, "role", requiredRole );
+                }
+            }
+            mojos.add( mojo );
+        }
+    }
+
+    public void modifyOutputStream( JarOutputStream jos )
+        throws IOException
+    {
+        byte[] data = getTransformedResource();
+
+        jos.putNextEntry( new JarEntry( PLUGIN_XML_PATH ) );
+
+        IOUtil.copy( data, jos );
+
+        mojos.clear();
+    }
+
+    public boolean hasTransformedResource()
+    {
+        return !mojos.isEmpty();
+    }
+
+    byte[] getTransformedResource()
+        throws IOException
+    {
+        ByteArrayOutputStream baos = new ByteArrayOutputStream( 1024 * 4 );
+
+        Writer writer = WriterFactory.newXmlWriter( baos );
+        try
+        {
+            Xpp3Dom dom = new Xpp3Dom( "plugin" );
+
+            Xpp3Dom componentDom = new Xpp3Dom( "mojos" );
+
+            dom.addChild( componentDom );
+
+            for ( Xpp3Dom mojo : mojos )
+            {
+                componentDom.addChild( mojo );
+            }
+
+            Xpp3DomWriter.write( writer, dom );
+        }
+        finally
+        {
+            IOUtil.close( writer );
+        }
+
+        return baos.toByteArray();
+    }
+
+    private String getRelocatedClass( String className, List<Relocator> relocators )
+    {
+        if ( className != null && className.length() > 0 && relocators != null )
+        {
+            for ( Relocator relocator : relocators )
+            {
+                if ( relocator.canRelocateClass( className ) )
+                {
+                    return relocator.relocateClass( className );
+                }
+            }
+        }
+
+        return className;
+    }
+
+    private static String getValue( Xpp3Dom dom, String element )
+    {
+        Xpp3Dom child = dom.getChild( element );
+
+        return ( child != null && child.getValue() != null ) ? child.getValue() : "";
+    }
+
+    private static void setValue( Xpp3Dom dom, String element, String value )
+    {
+        Xpp3Dom child = dom.getChild( element );
+
+        if ( child == null || value == null || value.length() <= 0 )
+        {
+            return;
+        }
+
+        child.setValue( value );
+    }
+
+    private static String getAttribute( Xpp3Dom dom, String attribute )
+    {
+        return ( dom.getAttribute( attribute ) != null ) ? dom.getAttribute( attribute ) : "";
+    }
+
+    private static void setAttribute( Xpp3Dom dom, String attribute, String value )
+    {
+        String attr = dom.getAttribute( attribute );
+
+        if ( attr == null || value == null || value.length() <= 0 )
+        {
+            return;
+        }
+
+        dom.setAttribute( attribute, value );
+    }
+
+}