diff options
Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/Classloader.java')
| -rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/Classloader.java | 244 |
1 files changed, 0 insertions, 244 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/Classloader.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/Classloader.java deleted file mode 100644 index 8a5967c7..00000000 --- a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/Classloader.java +++ /dev/null @@ -1,244 +0,0 @@ -/* - * 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. - * - */ - -package org.apache.tools.ant.taskdefs; - -import java.io.File; - -import org.apache.tools.ant.AntClassLoader; -import org.apache.tools.ant.BuildException; -import org.apache.tools.ant.MagicNames; -import org.apache.tools.ant.Project; -import org.apache.tools.ant.Task; -import org.apache.tools.ant.types.Path; -import org.apache.tools.ant.types.Reference; - -/** - * EXPERIMENTAL - * Create or modifies ClassLoader. The required pathRef parameter - * will be used to add classpath elements. - * - * The classpath is a regular path. Currently only file components are - * supported (future extensions may allow URLs). - * - * You can modify the core loader by not specifying any name or using - * "ant.coreLoader". (the core loader is used to load system ant - * tasks and for taskdefs that don't specify an explicit path). - * - * Taskdef and typedef can use the loader you create if the name follows - * the "ant.loader.NAME" pattern. NAME will be used as a pathref when - * calling taskdef. - * - * This tasks will not modify the core loader if "build.sysclasspath=only" - * - * The typical use is: - * <pre> - * <path id="ant.deps" > - * <fileset dir="myDir" > - * <include name="junit.jar, bsf.jar, js.jar, etc"/> - * </fileset> - * </path> - * - * <classloader pathRef="ant.deps" /> - * - * </pre> - * - */ -public class Classloader extends Task { - /** @see MagicNames#SYSTEM_LOADER_REF */ - public static final String SYSTEM_LOADER_REF = MagicNames.SYSTEM_LOADER_REF; - - private String name = null; - private Path classpath; - private boolean reset = false; - private boolean parentFirst = true; - private String parentName = null; - - /** - * Default constructor - */ - public Classloader() { - } - - /** Name of the loader. If none, the default loader will be modified - * - * @param name the name of this loader - */ - public void setName(String name) { - this.name = name; - } - - /** - * Reset the classloader, if it already exists. A new loader will - * be created and all the references to the old one will be removed. - * (it is not possible to remove paths from a loader). The new - * path will be used. - * - * @param b true if the loader is to be reset. - */ - public void setReset(boolean b) { - this.reset = b; - } - - /** - * Set reverse attribute. - * @param b if true reverse the normal classloader lookup. - * @deprecated use setParentFirst with a negated argument instead - */ - public void setReverse(boolean b) { - this.parentFirst = !b; - } - - /** - * Set reverse attribute. - * @param b if true reverse the normal classloader lookup. - */ - public void setParentFirst(boolean b) { - this.parentFirst = b; - } - - /** - * Set the name of the parent. - * @param name the parent name. - */ - public void setParentName(String name) { - this.parentName = name; - } - - - /** Specify which path will be used. If the loader already exists - * and is an AntClassLoader (or any other loader we can extend), - * the path will be added to the loader. - * @param pathRef a reference to a path. - * @throws BuildException if there is a problem. - */ - public void setClasspathRef(Reference pathRef) throws BuildException { - classpath = (Path) pathRef.getReferencedObject(getProject()); - } - - /** - * Set the classpath to be used when searching for component being defined - * - * @param classpath an Ant Path object containing the classpath. - */ - public void setClasspath(Path classpath) { - if (this.classpath == null) { - this.classpath = classpath; - } else { - this.classpath.append(classpath); - } - } - - /** - * Create a classpath. - * @return a path for configuration. - */ - public Path createClasspath() { - if (this.classpath == null) { - this.classpath = new Path(null); - } - return this.classpath.createPath(); - } - - - /** - * do the classloader manipulation. - */ - public void execute() { - try { - // Gump friendly - don't mess with the core loader if only classpath - if ("only".equals(getProject().getProperty("build.sysclasspath")) - && (name == null || SYSTEM_LOADER_REF.equals(name))) { - log("Changing the system loader is disabled " - + "by build.sysclasspath=only", Project.MSG_WARN); - return; - } - - String loaderName = (name == null) ? SYSTEM_LOADER_REF : name; - - Object obj = getProject().getReference(loaderName); - if (reset) { - // Are any other references held ? Can we 'close' the loader - // so it removes the locks on jars ? - obj = null; // a new one will be created. - } - - // TODO maybe use reflection to addPathElement (other patterns ?) - if (obj != null && !(obj instanceof AntClassLoader)) { - log("Referenced object is not an AntClassLoader", - Project.MSG_ERR); - return; - } - - AntClassLoader acl = (AntClassLoader) obj; - boolean existingLoader = acl != null; - - if (acl == null) { - // Construct a new class loader - Object parent = null; - if (parentName != null) { - parent = getProject().getReference(parentName); - if (!(parent instanceof ClassLoader)) { - parent = null; - } - } - // TODO: allow user to request the system or no parent - if (parent == null) { - parent = this.getClass().getClassLoader(); - } - - if (name == null) { - // The core loader must be reverse - //reverse=true; - } - getProject().log("Setting parent loader " + name + " " - + parent + " " + parentFirst, Project.MSG_DEBUG); - - // The param is "parentFirst" - acl = AntClassLoader.newAntClassLoader((ClassLoader) parent, - getProject(), classpath, parentFirst); - - getProject().addReference(loaderName, acl); - - if (name == null) { - // This allows the core loader to load optional tasks - // without delegating - acl.addLoaderPackageRoot("org.apache.tools.ant.taskdefs.optional"); - getProject().setCoreLoader(acl); - } - } - - if (existingLoader && classpath != null) { - String[] list = classpath.list(); - for (int i = 0; i < list.length; i++) { - File f = new File(list[i]); - if (f.exists()) { - log("Adding to class loader " + acl + " " + f.getAbsolutePath(), - Project.MSG_DEBUG); - acl.addPathElement(f.getAbsolutePath()); - } - } - } - - // TODO add exceptions - - } catch (Exception ex) { - ex.printStackTrace(); - } - } -} |