trunk/proposal/embed/src/java/org/apache/tools/ant/taskdefs/optional/JXPathSet.java

/*
 * 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:
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 * 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
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 * 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.
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 * 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.types.*;

import java.io.*;
import java.util.*;

import org.apache.commons.jxpath.*;


/**
 *  Set a JXPath property
 *  
 *
 * @deprecated A generic <property> should be used.
 */
public class JXPathSet extends Task {

    String path;
    String valueString;
    String refId;
    
    public JXPathSet() {
    }

    /** The JXPath pointing to the target.
     *  The root of the tree is the Project.
     *  Example:
     *      /references[@name='myRef']
     *
     */
    public void setPath( String path ) {
        this.path=path;
    }

    /** The value will be the referenced object.
     */
    public void setRefId( String refId ) {
        this.refId=refId;
    }

    /** Set the value to be used.
     */
    public void setValue( String s ) {
        this.valueString=s;
    }

    public void execute() {
        JXPathContext jxpathCtx;
        JXPath jxpathTask=(JXPath)project.getReference( "jxpathTask" );
        jxpathCtx=jxpathTask.getJXPathContext();

        Object value=null;
        if( refId!=null )
            value=project.getReference( refId );
        if( value==null )
            value=valueString;
        
        jxpathCtx.setValue( path, value );
    }    
}