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Ant example source code file (Chown.java)

This example Ant source code file (Chown.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

abstractaccesstask, abstractaccesstask, buildexception, buildexception, chown, chown, required, required

The Chown.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.
 *
 */

/*
 * Since the initial version of this file was deveolped on the clock on
 * an NSF grant I should say the following boilerplate:
 *
 * This material is based upon work supported by the National Science
 * Foundaton under Grant No. EIA-0196404. Any opinions, findings, and
 * conclusions or recommendations expressed in this material are those
 * of the author and do not necessarily reflect the views of the
 * National Science Foundation.
 */

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

import org.apache.tools.ant.BuildException;

/**
 * Chown equivalent for unix-like environments.
 *
 * @since Ant 1.6
 *
 * @ant.task category="filesystem"
 */
public class Chown extends AbstractAccessTask {

    private boolean haveOwner = false;

    /**
     * Chown task for setting file and directory permissions.
     */
    public Chown() {
        super.setExecutable("chown");
    }

    /**
     * Set the owner atribute.
     *
     * @param owner    The new owner for the file(s) or directory(ies)
     */
    public void setOwner(String owner) {
        createArg().setValue(owner);
        haveOwner = true;
    }

    /**
     * Ensure that all the required arguments and other conditions have
     * been set.
     */
    protected void checkConfiguration() {
        if (!haveOwner) {
            throw new BuildException("Required attribute owner not set in"
                                     + " chown", getLocation());
        }
        super.checkConfiguration();
    }

    /**
     * We don't want to expose the executable atribute, so overide it.
     *
     * @param e User supplied executable that we won't accept.
     */
    public void setExecutable(String e) {
        throw new BuildException(getTaskType()
                                 + " doesn\'t support the executable"
                                 + " attribute", getLocation());
    }
}

Other Ant examples (source code examples)

Here is a short list of links related to this Ant Chown.java source code file:

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