/*
* 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.beans.factory.config;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.InitializingBean;
/**
* Factory bean for
* <a href="http://jakarta.apache.org/commons/logging.html">commons-logging</a>
* {@link org.apache.commons.logging.Log} instances.
*
* <p>Useful for sharing Log instances among multiple beans instead of using
* one Log instance per class name, e.g. for common log topics.
*
* @author Juergen Hoeller
* @since 16.11.2003
* @see org.apache.commons.logging.Log
*/
public class CommonsLogFactoryBean implements FactoryBean<Log>, InitializingBean {
private Log log;
/**
* The name of the log.
* <p>This property is required.
* @param logName the name of the log
*/
public void setLogName(String logName) {
this.log = LogFactory.getLog(logName);
}
public void afterPropertiesSet() {
if (this.log == null) {
throw new IllegalArgumentException("'logName' is required");
}
}
public Log getObject() {
return this.log;
}
public Class<? extends Log> getObjectType() {
return (this.log != null ? this.log.getClass() : Log.class);
}
public boolean isSingleton() {
return true;
}
}
|