package org.apache.maven.plugin.ear;

 /*

  * 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 org.apache.maven.artifact.Artifact;

 import org.apache.maven.plugin.MojoFailureException;

 import org.codehaus.plexus.util.xml.XMLWriter;

 import java.util.Set;

 /**

  * The {@link EarModule} implementation for a Web application module.

  *

  * @author <a href="snicoll@apache.org">Stephane Nicoll</a>

  * @version $Id: WebModule.java 728546 2008-12-21 22:56:51Z bentmann $

  */

 public class WebModule

     extends AbstractEarModule

 {

     protected static final String WEB_MODULE = "web";

     protected static final String WEB_URI_FIELD = "web-uri";

     protected static final String CONTEXT_ROOT_FIELD = "context-root";

     private String contextRoot;

     public WebModule()

     {

     }

     public WebModule( Artifact a )

     {

         super( a );

         this.contextRoot = getDefaultContextRoot( a );

     }

     public void appendModule( XMLWriter writer, String version )

     {

         writer.startElement( MODULE_ELEMENT );

         writer.startElement( WEB_MODULE );

         writer.startElement( WEB_URI_FIELD );

         writer.writeText( getUri() );

         writer.endElement(); // web-uri

         writer.startElement( CONTEXT_ROOT_FIELD );

         writer.writeText( getContextRoot() );

         writer.endElement(); // context-root

         writer.endElement(); // web

         writeAltDeploymentDescriptor( writer, version);

         writer.endElement(); // module

     }

     public void resolveArtifact( Set artifacts )

         throws EarPluginException, MojoFailureException

     {

         // Let's resolve the artifact

         super.resolveArtifact( artifacts );

         // Context root has not been customized - using default

         if ( contextRoot == null )

         {

             contextRoot = getDefaultContextRoot( getArtifact() );

         }

     }

     /**

      * Returns the context root to use for the web module.

      * <p/>

      * Note that this might return <tt>null</tt> till the

      * artifact has been resolved.

      *

      * @return the context root

      */

     public String getContextRoot()

     {

         return contextRoot;

     }

     public String getType()

     {

         return "war";

     }

     /**

      * Generates a default context root for the given artifact, based

      * on the <tt>artifactId</tt>.

      *

      * @param a the artifact

      * @return a context root for the artifact

      */

     private static String getDefaultContextRoot( Artifact a )

     {

         if ( a == null )

         {

             throw new NullPointerException( "Artifact could not be null." );

         }

         return "/" + a.getArtifactId();

     }

 }