| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2000-2002 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", "Ant", 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 org.apache.tools.ant.PropertyHelper; |
| import org.apache.tools.ant.types.*; |
| |
| import java.io.*; |
| import java.util.*; |
| |
| import org.apache.commons.jxpath.*; |
| |
| // Experimental: need to add code to select the 'root', etc. |
| |
| /** |
| * Enable JXPath dynamic properties. |
| * |
| */ |
| public class JXPath extends Task { |
| |
| public static String PREFIX="jxpath:"; |
| JXPathPropertyHelper helper=new JXPathPropertyHelper(); |
| |
| public JXPath() { |
| } |
| |
| public JXPathContext getJXPathContext() { |
| return helper.jxpathCtx; |
| } |
| |
| public void execute() { |
| JXPathIntrospector.registerDynamicClass(Hashtable.class, JXPathHashtableHandler.class); |
| helper.jxpathCtx=JXPathContext.newContext( project ); |
| helper.jxpathCtx.setVariables(new AntVariables()); |
| |
| PropertyHelper phelper=PropertyHelper.getPropertyHelper( project ); |
| helper.setProject( project ); |
| helper.setNext( phelper.getNext() ); |
| phelper.setNext( helper ); |
| |
| project.addReference( "jxpathTask", this ); |
| |
| } |
| |
| |
| static class JXPathPropertyHelper extends PropertyHelper { |
| JXPathContext jxpathCtx; |
| |
| public boolean setPropertyHook( String ns, String name, Object v, boolean inh, |
| boolean user, boolean isNew) |
| { |
| if( ! name.startsWith(PREFIX) ) { |
| // pass to next |
| return super.setPropertyHook(ns, name, v, inh, user, isNew); |
| } |
| name=name.substring( PREFIX.length() ); |
| |
| jxpathCtx.setValue( name, v ); |
| return true; |
| } |
| |
| public Object getPropertyHook( String ns, String name , boolean user) { |
| if( ! name.startsWith(PREFIX) ) { |
| // pass to next |
| return super.getPropertyHook(ns, name, user); |
| } |
| |
| name=name.substring( PREFIX.length() ); |
| |
| //Object o=jxpathCtx.getValue( name ); |
| //System.out.println("JXPath: getProperty " + ns + " " + name + "=" + o + o.getClass()); |
| |
| String result = ""; |
| |
| Iterator iter = jxpathCtx.iterate(name); |
| |
| if(iter==null||!iter.hasNext()){ |
| return "null"; |
| } |
| |
| result += iter.next(); |
| |
| while (iter.hasNext()) { |
| Object o = iter.next(); |
| result += ", "+o; |
| } |
| |
| return result; |
| } |
| } |
| |
| |
| public static class JXPathHashtableHandler implements DynamicPropertyHandler { |
| |
| private static final String[] STRING_ARRAY = new String[0]; |
| |
| /** |
| * Returns string representations of all keys in the map. |
| */ |
| public String[] getPropertyNames(Object object){ |
| // System.out.println("getPropertyNames " + object ); |
| Hashtable map = (Hashtable) object; |
| String names[] = new String[map.size()]; |
| Enumeration it = map.keys(); |
| for (int i = 0; i < names.length; i++){ |
| names[i] = String.valueOf(it.nextElement()); |
| } |
| return names; |
| } |
| |
| /** |
| * Returns the value for the specified key. |
| */ |
| public Object getProperty(Object object, String propertyName) { |
| // System.out.println("getProperty " + object + " " + propertyName); |
| return ((Hashtable) object).get(propertyName); |
| } |
| |
| /** |
| * Sets the specified key value. |
| */ |
| public void setProperty(Object object, String propertyName, Object value){ |
| ((Hashtable)object).put(propertyName, value); |
| } |
| } |
| |
| public class AntVariables implements Variables { |
| |
| protected AntVariables(){ |
| } |
| |
| public void declareVariable(String varName, Object value){ |
| project.setNewProperty(varName, value.toString()); |
| } |
| |
| public Object getVariable(String varName){ |
| return project.getProperty(varName); |
| } |
| |
| public boolean isDeclaredVariable(String varName){ |
| return project.getProperty(varName) == null ? false : true ; |
| } |
| |
| public void undeclareVariable(String varName){ |
| throw new UnsupportedOperationException("Cannot undeclare variables in Ant."); |
| } |
| |
| } |
| |
| } |