Ant example source code file (P4Revert.java)

This example Ant source code file (P4Revert.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Ant tags/keywords

buildexception, buildexception, p4base, p4base, p4revert, p4revert, p4view, simplep4outputhandler, string, string

The P4Revert.java source code

/*
 *  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.
 *
 */
/*
 * Portions of this software are based upon public domain software
 * originally written at the National Center for Supercomputing Applications,
 * University of Illinois, Urbana-Champaign.
 */

package org.apache.tools.ant.taskdefs.optional.perforce;

import org.apache.tools.ant.BuildException;

/**
 * Revert Perforce open files or files in a changelist
 *
 * @ant.task category="scm"
 */
public class P4Revert extends P4Base {

    private String revertChange = null;
    private boolean onlyUnchanged = false;

    /**
     * The changelist to revert; optional.
     * @param revertChange : the change list to revert
     * @throws BuildException if the change list is null or empty string
     */
    public void setChange(String revertChange) throws BuildException {
        if (revertChange == null || revertChange.equals("")) {
            throw new BuildException("P4Revert: change cannot be null or empty");
        }

        this.revertChange = revertChange;

    }

    /**
     * flag to revert only unchanged files (p4 revert -a); optional, default false.
     * @param onlyUnchanged if set to true revert only unchanged files
     */
    public void setRevertOnlyUnchanged(boolean onlyUnchanged) {
        this.onlyUnchanged = onlyUnchanged;
    }

    /**
     * do the work
     * @throws BuildException if an error occurs during the execution of the Perforce command
     * and failonError is set to true
     */
    public void execute() throws BuildException {

        /* Here we can either revert any unchanged files in a changelist
         * or
         * any files regardless of whether they have been changed or not
         *
         *
         * The whole process also accepts a p4 filespec
         */
        String p4cmd = "-s revert";
        if (onlyUnchanged) {
            p4cmd += " -a";
        }

        if (revertChange != null) {
            p4cmd += " -c " + revertChange;
        }

        execP4Command(p4cmd + " " + P4View, new SimpleP4OutputHandler(this));
    }
}