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/*
 * Copyright 2004-2005 The Apache Software Foundation
 *
 *  Licensed 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.helper;

import org.apache.tools.ant.Project;
import org.apache.tools.ant.Executor;
import org.apache.tools.ant.BuildException;

/**
 * Default Target executor implementation. Runs each target individually
 * (including all of its dependencies). If an error occurs, behavior is
 * determined by the Project's "keep-going" mode.
 * @since Ant 1.6.3
 */
public class DefaultExecutor implements Executor {

    private static final SingleCheckExecutor SUB_EXECUTOR = new SingleCheckExecutor();

    //inherit doc
    public void executeTargets(Project project, String[] targetNames)
        throws BuildException {
        BuildException thrownException = null;
        for (int i = 0; i < targetNames.length; i++) {
            try {
                project.executeTarget(targetNames[i]);
            } catch (BuildException ex) {
                if (project.isKeepGoingMode()) {
                    thrownException = ex;
                } else {
                    throw ex;
                }
            }
        }
        if (thrownException != null) {
            throw thrownException;
        }
    }

    //inherit doc
    public Executor getSubProjectExecutor() {
        return SUB_EXECUTOR;
    }

}