org.quartz.classloading.LoadingLoaderClassLoadHelper Maven / Gradle / Ivy

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/* 
 * Copyright 2001-2009 Terracotta, Inc. 
 * 
 * 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.quartz.classloading;

import java.io.InputStream;
import java.net.URL;

/**
 * A ClassLoadHelper that uses either the loader of it's own class (this.getClass().getClassLoader().loadClass( .. )).
 * 
 * @see org.quartz.classloading.ClassLoadHelper
 * @see org.quartz.classloading.InitThreadContextClassLoadHelper
 * @see org.quartz.classloading.SimpleClassLoadHelper
 * @see org.quartz.classloading.CascadingClassLoadHelper
 * @author jhouse
 * @author pl47ypus
 */
class LoadingLoaderClassLoadHelper implements ClassLoadHelper {

  /*
   * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Interface.
   * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   */

  /**
   * Called to give the ClassLoadHelper a chance to initialize itself, including the opportunity to "steal" the class loader off of the calling
   * thread, which is the thread that is initializing Quartz.
   */
  @Override
  public void initialize() {

  }

  /**
   * Return the class with the given name.
   */
  @Override
  public Class loadClass(String name) throws ClassNotFoundException {

    return getClassLoader().loadClass(name);
  }

  /**
   * Finds a resource with a given name. This method returns null if no resource with this name is found.
   * 
   * @param name name of the desired resource
   * @return a java.net.URL object
   */
  @Override
  public URL getResource(String name) {

    return getClassLoader().getResource(name);
  }

  /**
   * Finds a resource with a given name. This method returns null if no resource with this name is found.
   * 
   * @param name name of the desired resource
   * @return a java.io.InputStream object
   */
  @Override
  public InputStream getResourceAsStream(String name) {

    return getClassLoader().getResourceAsStream(name);
  }

  /**
   * Enable sharing of the class-loader with 3rd party.
   * 
   * @return the class-loader user be the helper.
   */
  @Override
  public ClassLoader getClassLoader() {

    return this.getClass().getClassLoader();
  }
}