/*
* Copyright 2002-2008 the original author or authors.
*
* 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.springframework.scheduling.quartz;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.quartz.spi.ClassLoadHelper;
import org.springframework.core.io.DefaultResourceLoader;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;
/**
* Wrapper that adapts from the Quartz {@link ClassLoadHelper} interface
* onto Spring's {@link ResourceLoader} interface. Used by default when
* the SchedulerFactoryBean runs in a Spring ApplicationContext.
*
* @author Juergen Hoeller
* @since 2.5.5
* @see SchedulerFactoryBean#setApplicationContext
*/
public class ResourceLoaderClassLoadHelper implements ClassLoadHelper {
protected static final Log logger = LogFactory.getLog(ResourceLoaderClassLoadHelper.class);
private ResourceLoader resourceLoader;
/**
* Create a new ResourceLoaderClassLoadHelper for the default
* ResourceLoader.
* @see SchedulerFactoryBean#getConfigTimeResourceLoader()
*/
public ResourceLoaderClassLoadHelper() {
}
/**
* Create a new ResourceLoaderClassLoadHelper for the given ResourceLoader.
* @param resourceLoader the ResourceLoader to delegate to
*/
public ResourceLoaderClassLoadHelper(ResourceLoader resourceLoader) {
this.resourceLoader = resourceLoader;
}
public void initialize() {
if (this.resourceLoader == null) {
this.resourceLoader = SchedulerFactoryBean.getConfigTimeResourceLoader();
if (this.resourceLoader == null) {
this.resourceLoader = new DefaultResourceLoader();
}
}
}
public Class loadClass(String name) throws ClassNotFoundException {
return this.resourceLoader.getClassLoader().loadClass(name);
}
public URL getResource(String name) {
Resource resource = this.resourceLoader.getResource(name);
try {
return resource.getURL();
}
catch (FileNotFoundException ex) {
return null;
}
catch (IOException ex) {
logger.warn("Could not load " + resource);
return null;
}
}
public InputStream getResourceAsStream(String name) {
Resource resource = this.resourceLoader.getResource(name);
try {
return resource.getInputStream();
}
catch (FileNotFoundException ex) {
return null;
}
catch (IOException ex) {
logger.warn("Could not load " + resource);
return null;
}
}
public ClassLoader getClassLoader() {
return this.resourceLoader.getClassLoader();
}
}
|