io.logspace.agent.shaded.quartz.simpl.InitThreadContextClassLoadHelper Maven / Gradle / Ivy
/*
* 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 io.logspace.agent.shaded.quartz.simpl;
import io.logspace.agent.shaded.quartz.spi.ClassLoadHelper;
import java.net.URL;
import java.io.InputStream;
/**
* A ClassLoadHelper that uses either the context class loader
* of the thread that initialized Quartz.
*
* @see io.logspace.agent.shaded.quartz.spi.ClassLoadHelper
* @see io.logspace.agent.shaded.quartz.simpl.ThreadContextClassLoadHelper
* @see io.logspace.agent.shaded.quartz.simpl.SimpleClassLoadHelper
* @see io.logspace.agent.shaded.quartz.simpl.CascadingClassLoadHelper
* @see io.logspace.agent.shaded.quartz.simpl.LoadingLoaderClassLoadHelper
*
* @author jhouse
* @author pl47ypus
*/
public class InitThreadContextClassLoadHelper implements ClassLoadHelper {
/*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* Data members.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
private ClassLoader initClassLoader;
/*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* 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.
*/
public void initialize() {
initClassLoader = Thread.currentThread().getContextClassLoader();
}
/**
* Return the class with the given name.
*/
public Class loadClass(String name) throws ClassNotFoundException {
return initClassLoader.loadClass(name);
}
@SuppressWarnings("unchecked")
public Class loadClass(String name, Class clazz)
throws ClassNotFoundException {
return (Class) 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
*/
public URL getResource(String name) {
return initClassLoader.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
*/
public InputStream getResourceAsStream(String name) {
return initClassLoader.getResourceAsStream(name);
}
/**
* Enable sharing of the class-loader with 3rd party.
*
* @return the class-loader user be the helper.
*/
public ClassLoader getClassLoader() {
return this.initClassLoader;
}
}