/*
* Copyright 1999,2004 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.log4j.pattern;
import java.util.List;
import org.apache.log4j.spi.LoggingEvent;
import org.apache.log4j.spi.ThrowableInformation;
/**
* Outputs the ThrowableInformation portion of the LoggingiEvent as a full stacktrace
* unless this converter's option is 'short', where it just outputs the first line of the trace.
*
* @author Paul Smith
* @since 1.3
*
*/
public class ThrowableInformationPatternConverter extends PatternConverter {
String option;
/* (non-Javadoc)
* @see org.apache.log4j.pattern.PatternConverter#convert(org.apache.log4j.spi.LoggingEvent)
*/
protected StringBuffer convert(LoggingEvent event) {
StringBuffer buf = new StringBuffer(32);
ThrowableInformation information = event.getThrowableInformation();
if (information == null) {
return buf;
}
String[] stringRep = information.getThrowableStrRep();
int length = 0;
if (option == null) {
length = stringRep.length;
} else if (option.equals("full")) {
length = stringRep.length;
} else if (option.equals("short")) {
length = 1;
} else {
length = stringRep.length;
}
for (int i = 0; i < length; i++) {
String string = stringRep[i];
buf.append(string).append("\n");
}
return buf;
}
public void setOptions(List optionList) {
if(optionList == null || optionList.size() == 0) {
return;
}
option = (String) optionList.get(0);
}
public String getName() {
return "Throwable";
}
public String getStyleClass(LoggingEvent e) {
return "throwable";
}
/**
* This converter obviosly handles throwables.
*/
public boolean handlesThrowable() {
return true;
}
}