| /* |
| * Copyright 2003-2007 the original author or authors. |
| * |
| * Licensed 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.codehaus.groovy.ant; |
| |
| import org.apache.tools.ant.AntClassLoader; |
| import org.apache.tools.ant.BuildException; |
| import org.apache.tools.ant.Project; |
| import org.apache.tools.ant.taskdefs.MatchingTask; |
| import org.apache.tools.ant.types.Path; |
| import org.apache.tools.ant.types.Reference; |
| import org.codehaus.groovy.tools.LoaderConfiguration; |
| import org.codehaus.groovy.tools.RootLoader; |
| |
| |
| /** |
| * Sets the RootLoader as reference. |
| * Reexecution of this task will set a new instance of RootLoader for |
| * the reference. |
| * |
| * arguments: |
| * <ul> |
| * <li>ref</li> |
| * <li>classpath</li> |
| * </ul> |
| * |
| * all arguments are requiered. |
| * |
| * As ant requieres an AntClassLoader as reference, this will create a RootLoader |
| * and set an AntClassLoader as child and stored in the reference. The AntClassLoader |
| * instance will not have a classpath nor will it have access to the classpath somehow, |
| * all loading is done by the RootLoader parent. To avoid problems with loading classes |
| * multiple times and using them at the same time, this task will filter out the ant jars |
| * and the commons-logging jars. This only works if the ant jars are starting with "ant-" and |
| * the logging jar starts with "commons-logging-". |
| * |
| * This was needed because if ant wants to access a task argument that uses for example a Path |
| * it look for a matching method which includes a matching class. But two classes of the same name |
| * with different classloaders are different, so ant would not be able to find the method. |
| * |
| * @see org.codehaus.groovy.tools.RootLoader |
| * @author Jochen Theodorou |
| * @version $Revision$ |
| */ |
| public class RootLoaderRef extends MatchingTask { |
| private String name; |
| private Path taskClasspath; |
| |
| /** |
| * sets the name of the reference which should store the Loader |
| */ |
| public void setRef(String n){ |
| name = n; |
| } |
| |
| public void execute() throws BuildException { |
| if (taskClasspath==null || taskClasspath.size()==0) { |
| throw new BuildException("no classpath given"); |
| } |
| Project project = getProject(); |
| AntClassLoader loader = new AntClassLoader(makeRoot(),true); |
| project.addReference(name,loader); |
| } |
| |
| private RootLoader makeRoot() { |
| String[] list = taskClasspath.list(); |
| LoaderConfiguration lc = new LoaderConfiguration(); |
| for (int i=0; i<list.length; i++) { |
| if (list[i].matches(".*ant-[^/]*jar$")) { |
| continue; |
| } |
| if (list[i].matches(".*commons-logging-[^/]*jar$")) { |
| continue; |
| } |
| if (list[i].matches(".*xerces-[^/]*jar$")) { |
| continue; |
| } |
| lc.addFile(list[i]); |
| } |
| return new RootLoader(lc); |
| } |
| |
| /** |
| * Set the classpath to be used for this compilation. |
| * |
| * @param classpath an Ant Path object containing the compilation classpath. |
| */ |
| public void setClasspath(Path classpath) { |
| if (taskClasspath == null) { |
| taskClasspath = classpath; |
| } |
| else { |
| taskClasspath.append(classpath); |
| } |
| } |
| |
| /** |
| * Adds a reference to a classpath defined elsewhere. |
| * @param r a reference to a classpath |
| */ |
| public void setClasspathRef(Reference r) { |
| createClasspath().setRefid(r); |
| } |
| |
| /** |
| * Adds a path to the classpath. |
| * @return a class path to be configured |
| */ |
| public Path createClasspath() { |
| if (taskClasspath == null) { |
| taskClasspath = new Path(getProject()); |
| } |
| return taskClasspath.createPath(); |
| } |
| } |