org.apache.log4j.spi.ThrowableInformation Maven / Gradle / Ivy
/*
* 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.log4j.spi;
import org.apache.log4j.Category;
import org.apache.log4j.DefaultThrowableRenderer;
/**
* ThrowableInformation is log4j's internal representation of
* throwables. It essentially consists of a string array, called
* 'rep', where the first element, that is rep[0], represents the
* string representation of the throwable (i.e. the value you get
* when you do throwable.toString()) and subsequent elements
* correspond the stack trace with the top most entry of the stack
* corresponding to the second entry of the 'rep' array that is
* rep[1].
*
* @author Ceki Gülcü
*
* */
public class ThrowableInformation implements java.io.Serializable {
static final long serialVersionUID = -4748765566864322735L;
private transient Throwable throwable;
private transient Category category;
private String[] rep;
public
ThrowableInformation(Throwable throwable) {
this.throwable = throwable;
}
/**
* Create a new instance.
* @param throwable throwable, may not be null.
* @param category category used to obtain ThrowableRenderer, may be null.
* @since 1.2.16
*/
public ThrowableInformation(Throwable throwable, Category category) {
this.throwable = throwable;
this.category = category;
}
/**
* Create new instance.
* @since 1.2.15
* @param r String representation of throwable.
*/
public ThrowableInformation(final String[] r) {
if (r != null) {
rep = (String[]) r.clone();
}
}
public
Throwable getThrowable() {
return throwable;
}
public synchronized String[] getThrowableStrRep() {
if(rep == null) {
ThrowableRenderer renderer = null;
if (category != null) {
LoggerRepository repo = category.getLoggerRepository();
if (repo instanceof ThrowableRendererSupport) {
renderer = ((ThrowableRendererSupport) repo).getThrowableRenderer();
}
}
if (renderer == null) {
rep = DefaultThrowableRenderer.render(throwable);
} else {
rep = renderer.doRender(throwable);
}
}
return (String[]) rep.clone();
}
}