- /*
- * Copyright 2001-2004 The Apache Software Foundation.
- *
- * 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.apache.commons.logging.impl;
-
- import java.io.Serializable;
- import org.apache.avalon.framework.logger.Logger;
- import org.apache.commons.logging.Log;
-
- /**
- * <p>Implementation of commons-logging Log interface that delegates all
- * logging calls to the Avalon logging abstraction: the Logger interface.
- * </p>
- * <p>
- * There are two ways in which this class can be used:
- * </p>
- * <ul>
- * <li>the instance can be constructed with an Avalon logger
- * (by calling {@link #AvalonLogger(Logger)}). In this case, it acts
- * as a simple thin wrapping implementation over the logger. This is
- * particularly useful when using a property setter.
- * </li>
- * <li>the {@link #setDefaultLogger} class property can be called which
- * sets the ancesteral Avalon logger for this class. Any <code>AvalonLogger</code>
- * instances created through the <code>LogFactory</code> mechanisms will output
- * to child loggers of this <code>Logger</code>.
- * </li>
- * </ul>
- *
- * @author <a href="mailto:neeme@apache.org">Neeme Praks</a>
- * @version $Revision: 1.9 $ $Date: 2004/06/01 19:56:20 $
- */
- public class AvalonLogger implements Log, Serializable {
-
- /** Ancesteral avalon logger */
- private static Logger defaultLogger = null;
- /** Avalon logger used to perform log */
- private transient Logger logger = null;
- /** The name of this logger */
- private String name = null;
-
- /**
- * Constructs an <code>AvalonLogger</code> that outputs to the given
- * <code>Logger</code> instance.
- * @param logger the avalon logger implementation to delegate to
- */
- public AvalonLogger(Logger logger) {
- this.name = name;
- this.logger = logger;
- }
-
- /**
- * Constructs an <code>AvalonLogger</code> that will log to a child
- * of the <code>Logger</code> set by calling {@link #setDefaultLogger}.
- * @param name the name of the avalon logger implementation to delegate to
- */
- public AvalonLogger(String name) {
- if (defaultLogger == null)
- throw new NullPointerException("default logger has to be specified if this constructor is used!");
- this.logger = getLogger();
- }
-
- /**
- * Gets the Avalon logger implementation used to perform logging.
- * @return avalon logger implementation
- */
- public Logger getLogger() {
- if (logger == null) {
- logger = defaultLogger.getChildLogger(name);
- }
- return logger;
- }
-
- /**
- * Sets the ancesteral Avalon logger from which the delegating loggers
- * will descend.
- * @param logger the default avalon logger,
- * in case there is no logger instance supplied in constructor
- */
- public static void setDefaultLogger(Logger logger) {
- defaultLogger = logger;
- }
-
- /**
- * @see org.apache.commons.logging.Log#debug(java.lang.Object, java.lang.Throwable)
- */
- public void debug(Object o, Throwable t) {
- if (getLogger().isDebugEnabled()) getLogger().debug(String.valueOf(o), t);
- }
-
- /**
- * @see org.apache.commons.logging.Log#debug(java.lang.Object)
- */
- public void debug(Object o) {
- if (getLogger().isDebugEnabled()) getLogger().debug(String.valueOf(o));
- }
-
- /**
- * @see org.apache.commons.logging.Log#error(java.lang.Object, java.lang.Throwable)
- */
- public void error(Object o, Throwable t) {
- if (getLogger().isErrorEnabled()) getLogger().error(String.valueOf(o), t);
- }
-
- /**
- * @see org.apache.commons.logging.Log#error(java.lang.Object)
- */
- public void error(Object o) {
- if (getLogger().isErrorEnabled()) getLogger().error(String.valueOf(o));
- }
-
- /**
- * @see org.apache.commons.logging.Log#fatal(java.lang.Object, java.lang.Throwable)
- */
- public void fatal(Object o, Throwable t) {
- if (getLogger().isFatalErrorEnabled()) getLogger().fatalError(String.valueOf(o), t);
- }
-
- /**
- * @see org.apache.commons.logging.Log#fatal(java.lang.Object)
- */
- public void fatal(Object o) {
- if (getLogger().isFatalErrorEnabled()) getLogger().fatalError(String.valueOf(o));
- }
-
- /**
- * @see org.apache.commons.logging.Log#info(java.lang.Object, java.lang.Throwable)
- */
- public void info(Object o, Throwable t) {
- if (getLogger().isInfoEnabled()) getLogger().info(String.valueOf(o), t);
- }
-
- /**
- * @see org.apache.commons.logging.Log#info(java.lang.Object)
- */
- public void info(Object o) {
- if (getLogger().isInfoEnabled()) getLogger().info(String.valueOf(o));
- }
-
- /**
- * @see org.apache.commons.logging.Log#isDebugEnabled()
- */
- public boolean isDebugEnabled() {
- return getLogger().isDebugEnabled();
- }
-
- /**
- * @see org.apache.commons.logging.Log#isErrorEnabled()
- */
- public boolean isErrorEnabled() {
- return getLogger().isErrorEnabled();
- }
-
- /**
- * @see org.apache.commons.logging.Log#isFatalEnabled()
- */
- public boolean isFatalEnabled() {
- return getLogger().isFatalErrorEnabled();
- }
-
- /**
- * @see org.apache.commons.logging.Log#isInfoEnabled()
- */
- public boolean isInfoEnabled() {
- return getLogger().isInfoEnabled();
- }
-
- /**
- * @see org.apache.commons.logging.Log#isTraceEnabled()
- */
- public boolean isTraceEnabled() {
- return getLogger().isDebugEnabled();
- }
-
- /**
- * @see org.apache.commons.logging.Log#isWarnEnabled()
- */
- public boolean isWarnEnabled() {
- return getLogger().isWarnEnabled();
- }
-
- /**
- * @see org.apache.commons.logging.Log#trace(java.lang.Object, java.lang.Throwable)
- */
- public void trace(Object o, Throwable t) {
- if (getLogger().isDebugEnabled()) getLogger().debug(String.valueOf(o), t);
- }
-
- /**
- * @see org.apache.commons.logging.Log#trace(java.lang.Object)
- */
- public void trace(Object o) {
- if (getLogger().isDebugEnabled()) getLogger().debug(String.valueOf(o));
- }
-
- /**
- * @see org.apache.commons.logging.Log#warn(java.lang.Object, java.lang.Throwable)
- */
- public void warn(Object o, Throwable t) {
- if (getLogger().isWarnEnabled()) getLogger().warn(String.valueOf(o), t);
- }
-
- /**
- * @see org.apache.commons.logging.Log#warn(java.lang.Object)
- */
- public void warn(Object o) {
- if (getLogger().isWarnEnabled()) getLogger().warn(String.valueOf(o));
- }
-
- }