You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@ant.apache.org by co...@apache.org on 2002/10/11 20:19:33 UTC
cvs commit: jakarta-ant/proposal/embed/src/java/org/apache/tools/ant/taskdefs/optional TaskDiscovery.java
costin 2002/10/11 11:19:33
Added: proposal/embed/src/java/org/apache/tools/ant/taskdefs/optional
TaskDiscovery.java
Removed: proposal/embed/src/java/org/apache/tools/ant/taskdefs
ServiceDiscoveryTask.java
Log:
Removed ServiceDiscoveryTask ( for now ).
Added an experimental TaskDiscovery that will use commons-discovery
to find tasks using the ProjectComponentFactory hook.
This is just to play with different antlib mechanisms.
Revision Changes Path
1.1 jakarta-ant/proposal/embed/src/java/org/apache/tools/ant/taskdefs/optional/TaskDiscovery.java
Index: TaskDiscovery.java
===================================================================
/*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999-2002 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.tools.ant.taskdefs.optional;
import org.apache.tools.ant.*;
import java.util.*;
import org.apache.commons.discovery.ResourceName;
import org.apache.commons.discovery.ResourceNameIterator;
import org.apache.commons.discovery.jdk.JDKHooks;
import org.apache.commons.discovery.resource.DiscoverResources;
/**
* Default implementation for discovery and (lazy) creation of tasks.
*
* Several mechanisms will be used:
* - properties files found in the classpath ( META-INF/ant.tasks ).
* - resources named after the task name: META-INF/ant/[TASK_NAME].task
*
* @author Costin Manolache
*/
public class TaskDiscovery extends Task implements ProjectComponentFactory
{
String RESOURCE_NAME="META-INF/ant.tasks";
// Also discovery the 'legacy' names - in ant1.6 the initial preloaded tasks
// should be deprecated.
ResourceName[] discoveredTasks = null;
Hashtable taskDefs=new Hashtable();
public Object createProjectComponent( Project project,
String ns,
String taskName )
throws BuildException
{
// System.out.println("Try create " + taskName);
//
return null;
}
public String toString() {
StringBuffer sb=new StringBuffer();
sb.append( "DiscoveredTasks[" );
if( discoveredTasks != null ) {
for( int i=0; i<discoveredTasks.length; i++ ) {
if( i>0) sb.append( ", ");
sb.append( discoveredTasks[i] );
}
sb.append( "]");
}
return sb.toString();
}
Properties taskClassNames=new Properties();
/** @TODO: Register itself as ProjectComponentHelper.
*/
public void execute() throws BuildException
{
ProjectComponentHelper pcHelper=ProjectComponentHelper.getProjectComponentHelper();
pcHelper.addComponentFactory( this );
// We'll read all 'ant.tasks' at startup, and every time an unknown task
// is found ( the classloader may be different from last time ). Not the best
// solution, just a start.
DiscoverResources disc = new DiscoverResources();
disc.addClassLoader( JDKHooks.getJDKHooks().getThreadContextClassLoader() );
disc.addClassLoader( this.getClass().getClassLoader() );
ResourceNameIterator enum = disc.findResources(RESOURCE_NAME);
Vector vector = new Vector();
while (enum.hasNext()) {
ResourceName resourceInfo = enum.nextResourceName();
vector.add(resourceInfo);
System.out.println("Found " + resourceInfo);
}
discoveredTasks = new ResourceName[vector.size()];
vector.copyInto(discoveredTasks);
}
}
--
To unsubscribe, e-mail: <ma...@jakarta.apache.org>
For additional commands, e-mail: <ma...@jakarta.apache.org>