/*
* Copyright 2002-2009 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.support;
import java.lang.reflect.InvocationTargetException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.BeanClassLoaderAware;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.support.ArgumentConvertingMethodInvoker;
import org.springframework.util.ClassUtils;
/**
* Adapter that implements the {@link Runnable} interface as a configurable
* method invocation based on Spring's MethodInvoker.
*
* <p>Inherits common configuration properties from
* {@link org.springframework.util.MethodInvoker}.
*
* @author Juergen Hoeller
* @since 1.2.4
* @see org.springframework.scheduling.timer.ScheduledTimerTask#setRunnable(Runnable)
* @see java.util.concurrent.Executor#execute(Runnable)
*/
public class MethodInvokingRunnable extends ArgumentConvertingMethodInvoker
implements Runnable, BeanClassLoaderAware, InitializingBean {
protected final Log logger = LogFactory.getLog(getClass());
private ClassLoader beanClassLoader = ClassUtils.getDefaultClassLoader();
public void setBeanClassLoader(ClassLoader classLoader) {
this.beanClassLoader = classLoader;
}
@Override
protected Class resolveClassName(String className) throws ClassNotFoundException {
return ClassUtils.forName(className, this.beanClassLoader);
}
public void afterPropertiesSet() throws ClassNotFoundException, NoSuchMethodException {
prepare();
}
public void run() {
try {
invoke();
}
catch (InvocationTargetException ex) {
logger.error(getInvocationFailureMessage(), ex.getTargetException());
// Do not throw exception, else the main loop of the scheduler might stop!
}
catch (Throwable ex) {
logger.error(getInvocationFailureMessage(), ex);
// Do not throw exception, else the main loop of the scheduler might stop!
}
}
/**
* Build a message for an invocation failure exception.
* @return the error message, including the target method name etc
*/
protected String getInvocationFailureMessage() {
return "Invocation of method '" + getTargetMethod() +
"' on target class [" + getTargetClass() + "] failed";
}
}
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