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Ant example source code file (RmicAdapterFactory.java)

This example Ant source code file (RmicAdapterFactory.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, class, default_compiler, forkingsunrmic, rmicadapter, rmicadapter, rmicadapterfactory, rmicadapterfactory, string, string, task, type, util, wlrmic

The RmicAdapterFactory.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 org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.util.ClasspathUtils;

import java.util.Locale;


/**
 * Creates the necessary rmic adapter, given basic criteria.
 *
 * @since 1.4
 */
public final class RmicAdapterFactory {
    /** The error message to be used when the compiler cannot be found. */
    public static final String ERROR_UNKNOWN_COMPILER = "Class not found: ";

    /** The error message to be used when the class is not an rmic adapter. */
    public static final String ERROR_NOT_RMIC_ADAPTER = "Class of unexpected Type: ";

    /** If the compiler has this name use a default compiler. */
    public static final String DEFAULT_COMPILER = "default";

    /** This is a singleton -- can't create instances!! */
    private RmicAdapterFactory() {
    }

    /**
     * Based on the parameter passed in, this method creates the necessary
     * factory desired.
     *
     * <p>The current mapping for rmic names are as follows:

* <ul>
  • sun = SUN's rmic * <li>kaffe = Kaffe's rmic * <li>a fully quallified classname = the name of a rmic * adapter * <li>weblogic = weblogic compiler * <li>forking = Sun's RMIC by forking a new JVM * </ul> * * @param rmicType either the name of the desired rmic, or the * full classname of the rmic's adapter. * @param task a task to log through. * @return the compiler adapter * @throws BuildException if the rmic type could not be resolved into * a rmic adapter. */ public static RmicAdapter getRmic(String rmicType, Task task) throws BuildException { //convert to lower case in the English locale, String compiler = rmicType.toLowerCase(Locale.ENGLISH); //handle default specially by choosing the sun or kaffe compiler if (DEFAULT_COMPILER.equals(compiler) || compiler.length() == 0) { compiler = KaffeRmic.isAvailable() ? KaffeRmic.COMPILER_NAME : SunRmic.COMPILER_NAME; } if (SunRmic.COMPILER_NAME.equals(compiler)) { return new SunRmic(); } else if (KaffeRmic.COMPILER_NAME.equals(compiler)) { return new KaffeRmic(); } else if (WLRmic.COMPILER_NAME.equals(compiler)) { return new WLRmic(); } else if (ForkingSunRmic.COMPILER_NAME.equals(compiler)) { return new ForkingSunRmic(); } else if (XNewRmic.COMPILER_NAME.equals(compiler)) { return new XNewRmic(); } //no match? ask for the non-lower-cased type return resolveClassName(rmicType); } /** * Tries to resolve the given classname into a rmic adapter. * Throws a fit if it can't. * * @param className The fully qualified classname to be created. * @throws BuildException This is the fit that is thrown if className * isn't an instance of RmicAdapter. */ private static RmicAdapter resolveClassName(String className) throws BuildException { return (RmicAdapter) ClasspathUtils.newInstance(className, RmicAdapterFactory.class.getClassLoader(), RmicAdapter.class); } }
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