Ant example source code file (SunRmic.java)

This example Ant source code file (SunRmic.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

a, boolean, buildexception, buildexception, class, commandline, error, io, logoutputstream, object, object, reflection, string, string, sun, sun

The SunRmic.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.
 *
 */

package org.apache.tools.ant.taskdefs.rmic;

import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.taskdefs.LogOutputStream;
import org.apache.tools.ant.types.Commandline;

/**
 * The implementation of the rmic for SUN's JDK.
 *
 * @since Ant 1.4
 */
public class SunRmic extends DefaultRmicAdapter {

    /**
     * name of the class
     */
    public static final String RMIC_CLASSNAME = "sun.rmi.rmic.Main";

    /**
     * the name of this adapter for users to select
     */
    public static final String COMPILER_NAME = "sun";

    /**
     * name of the executable
     */
    public static final String RMIC_EXECUTABLE = "rmic";
    /** Error message to use with the sun rmic is not the classpath. */
    public static final String ERROR_NO_RMIC_ON_CLASSPATH = "Cannot use SUN rmic, as it is not "
                                         + "available.  A common solution is to "
                                         + "set the environment variable "
                                         + "JAVA_HOME or CLASSPATH.";
    /** Error message to use when there is an error starting the sun rmic compiler */
    public static final String ERROR_RMIC_FAILED = "Error starting SUN rmic: ";

    /**
     * Run the rmic compiler.
     * @return true if the compilation succeeded
     * @throws BuildException on error
     */
    public boolean execute() throws BuildException {
        getRmic().log("Using SUN rmic compiler", Project.MSG_VERBOSE);
        Commandline cmd = setupRmicCommand();

        // Create an instance of the rmic, redirecting output to
        // the project log
        LogOutputStream logstr = new LogOutputStream(getRmic(),
                                                     Project.MSG_WARN);

        try {
            Class c = Class.forName(RMIC_CLASSNAME);
            Constructor cons
                = c.getConstructor(new Class[]  {OutputStream.class, String.class});
            Object rmic = cons.newInstance(new Object[] {logstr, "rmic"});

            Method doRmic = c.getMethod("compile",
                                        new Class [] {String[].class});
            Boolean ok =
                (Boolean) doRmic.invoke(rmic,
                                       (new Object[] {cmd.getArguments()}));
            return ok.booleanValue();
        } catch (ClassNotFoundException ex) {
            throw new BuildException(ERROR_NO_RMIC_ON_CLASSPATH,
                                     getRmic().getLocation());
        } catch (Exception ex) {
            if (ex instanceof BuildException) {
                throw (BuildException) ex;
            } else {
                throw new BuildException(ERROR_RMIC_FAILED,
                                         ex, getRmic().getLocation());
            }
        } finally {
            try {
                logstr.close();
            } catch (IOException e) {
                throw new BuildException(e);
            }
        }
    }
}