/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.cocoon.ojb.components;
import org.apache.avalon.framework.activity.Initializable;
import org.apache.avalon.framework.component.Component;
import org.apache.avalon.framework.logger.AbstractLogEnabled;
import org.apache.avalon.framework.thread.ThreadSafe;
import org.apache.ojb.broker.util.configuration.Configuration;
import org.apache.ojb.broker.util.configuration.ConfigurationException;
import org.apache.ojb.broker.util.logging.Logger;
import org.apache.ojb.broker.util.logging.LoggingConfiguration;
/**
* OJB logger implementation delegating to the Avalon logger.
*
* <p>This class has two faces to it:
* <dl>
* <dt>Avalon Component</dt>
* <dd>Instance of the class created and managed by Avalon container.
* When instance is initialized, it obtains logger instance to be used
* by OJB.</dd>
* <dt>OJB Managed Class</dt>
* <dd>Instances of the class are created and managed by OJB, as defined
* in the OJB <code>OJB.properties</code> file. Each OJB managed instance
* of the class will have access to the logger object initialized
* by Avalon managed instance of the class.</dd>
* </dl>
*
* It is important that Avalon component is initialized before any access
* to OJB API is made.</p>
*
* @author <a href="mailto:vgritsenko@apache.org">Vadim Gritsenko</a>
* @version $Id$
*/
public class LoggerImpl extends AbstractLogEnabled
implements Component, ThreadSafe, Initializable,
Logger {
/**
* Root logger for all OJB loggers
*/
private static org.apache.avalon.framework.logger.Logger LOGGER;
private final String name;
private transient int level;
private transient org.apache.avalon.framework.logger.Logger logger;
/**
* Constructor used by Container
*/
public LoggerImpl() {
this.name = null;
}
/**
* Constructor used by OJB 1.0 to create a logger instance
*/
public LoggerImpl(String name) {
this.name = name.startsWith("org.apache.ojb.")? name.substring(15): name;
}
/**
* Constructor used by OJB 1.1 to create a logger instance
*/
public LoggerImpl(String name, LoggingConfiguration config) {
this(name);
}
/**
* Set root logger instance which will be used by OJB
*/
public void initialize() {
LOGGER = getLogger();
}
protected int getLevel() {
if (logger == null) {
this.logger = LOGGER.getChildLogger(this.name);
if (this.logger.isDebugEnabled()) this.level = DEBUG;
else if (this.logger.isInfoEnabled()) this.level = INFO;
else if (this.logger.isWarnEnabled()) this.level = WARN;
else if (this.logger.isErrorEnabled()) this.level = ERROR;
else this.level = FATAL;
}
return level;
}
public String getName() {
return name;
}
public void debug(Object message) {
if (DEBUG >= getLevel()) {
logger.debug(toString(message));
}
}
public void debug(Object message, Throwable t) {
if (DEBUG >= getLevel()) {
logger.debug(toString(message), t);
}
}
public void safeDebug(String message, Object obj) {
if (DEBUG >= getLevel()) {
logger.debug(message + " : " + toString(obj));
}
}
public void safeDebug(String message, Object obj, Throwable t) {
if (DEBUG >= getLevel()) {
logger.debug(message + " : " + toString(obj), t);
}
}
public void info(Object message) {
if (INFO >= getLevel()) {
logger.info(toString(message));
}
}
public void info(Object message, Throwable t) {
if (INFO >= getLevel()) {
logger.info(toString(message), t);
}
}
public void safeInfo(String message, Object obj) {
if (INFO >= getLevel()) {
logger.info(message + " : " + toString(obj));
}
}
public void safeInfo(String message, Object obj, Throwable t) {
if (INFO >= getLevel()) {
logger.info(message + " : " + toString(obj), t);
}
}
public void warn(Object message) {
if (WARN >= getLevel()) {
logger.warn(toString(message));
}
}
public void warn(Object message, Throwable t) {
if (WARN >= getLevel()) {
logger.warn(toString(message), t);
}
}
public void safeWarn(String message, Object obj) {
if (WARN >= getLevel()) {
logger.warn(message + " : " + toString(obj));
}
}
public void safeWarn(String message, Object obj, Throwable t) {
if (WARN >= getLevel()) {
logger.warn(message + " : " + toString(obj), t);
}
}
public void error(Object message) {
if (ERROR >= getLevel()) {
logger.error(toString(message));
}
}
public void error(Object message, Throwable t) {
if (ERROR >= getLevel()) {
logger.error(toString(message), t);
}
}
public void safeError(String message, Object obj) {
if (ERROR >= getLevel()) {
logger.error(message + " : " + toString(obj));
}
}
public void safeError(String message, Object obj, Throwable t) {
if (ERROR >= getLevel()) {
logger.error(message + " : " + toString(obj), t);
}
}
public void fatal(Object message) {
if (FATAL >= getLevel()) {
logger.fatalError(toString(message));
}
}
public void fatal(Object message, Throwable t) {
if (FATAL >= getLevel()) {
logger.fatalError(toString(message), t);
}
}
public void safeFatal(String message, Object obj) {
if (FATAL >= getLevel()) {
logger.fatalError(message + " : " + toString(obj));
}
}
public void safeFatal(String message, Object obj, Throwable t) {
if (FATAL >= getLevel()) {
logger.fatalError(message + " : " + toString(obj), t);
}
}
public boolean isDebugEnabled() {
return isEnabledFor(DEBUG);
}
public boolean isEnabledFor(int priority) {
return priority >= getLevel();
}
/*
* @see org.apache.ojb.broker.util.configuration.Configurable#configure(Configuration)
*/
public void configure(Configuration config) throws ConfigurationException {
}
private String toString(Object obj) {
if (obj != null) {
try {
return obj.toString();
} catch (Throwable throwable) {
return "BAD toString() impl for " + obj.getClass().getName();
}
}
return "null";
}
}