package org.apache.maven.jelly.tags.werkz;
/* ====================================================================
* 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.commons.jelly.JellyTagException;
import org.apache.commons.jelly.XMLOutput;
import org.apache.maven.MavenConstants;
import org.apache.maven.jelly.MavenJellyContext;
import org.apache.maven.plugin.JellyScriptHousing;
import org.apache.maven.plugin.PluginManager;
import org.apache.maven.werkz.Action;
import org.apache.maven.werkz.Goal;
import org.apache.maven.werkz.Session;
import org.apache.maven.werkz.WerkzProject;
import org.apache.maven.werkz.jelly.GoalTag;
/**
* Replacement for werkz's <code>GoalTag</code> which does not allow a goal
* to be redefined once defined.
* For Jelly scripts that are run which contain this tag it is assumed that
* they are being run in the order whereby the first definition wins.
*
* @author <a href="mailto:brett@apache.org">Brett Porter</a>
* @version $Id: MavenGoalTag.java 517014 2007-03-11 21:15:50Z ltheussl $
*/
public class MavenGoalTag
extends GoalTag
{
// ------------------------------------------------------------
// C O N S T R U C T O R S
// ------------------------------------------------------------
/**
* Construct.
*/
public MavenGoalTag()
{
// intentionally left blank.
}
/**
* Define a goal.
*
* @param output The output sink.
* @throws JellyTagException If an error occurs while executing the tag.
*/
public void doTag( XMLOutput output )
throws JellyTagException
{
Goal goal = getProject().getGoal( getName() );
if ( ( goal == null ) || ( goal.getAction() == null ) )
{
super.doTag( output );
goal = getProject().getGoal( getName() );
JellyScriptHousing currentHousing = (JellyScriptHousing) getContext()
.getVariable( PluginManager.PLUGIN_HOUSING );
goal.setAction( new MavenGoalAction( currentHousing ) );
}
}
void runBodyTag( Session session )
throws JellyTagException
{
MavenJellyContext context = (MavenJellyContext) getContext();
getBody().run( context, context.getXMLOutput() );
}
/**
* @todo refactor into a separate class that gets the necessary variables delegated to it.
*/
public class MavenGoalAction
implements Action
{
private final JellyScriptHousing housing;
public MavenGoalAction( JellyScriptHousing housing )
{
super();
this.housing = housing;
if ( housing == null )
{
throw new NullPointerException( "Plugin Housing can not be null" );
}
}
public void performAction( Session session )
throws Exception
{
MavenJellyContext oldContext = (MavenJellyContext) getContext();
//GoalToJellyScriptHousingMapper mapper = ( GoalToJellyScriptHousingMapper ) session.getAttribute(
//PluginManager.GOAL_MAPPER );
//JellyScriptHousing housing = mapper.getPluginHousing( getName() );
MavenJellyContext context = housing.getProject().getContext();
setContext( context );
runBodyTag( session );
setContext( oldContext );
}
public boolean requiresAction()
{
return true;
}
}
public WerkzProject getProject()
{
return (WerkzProject) getContext().getVariable( MavenConstants.WERKZ_PROJECT );
}
}