ceki 01/03/28 08:32:52
Added: src/java/org/apache/log4j/spi ThrowableInformation.java
Log:
A helper class that can represent throwables even after serialization.
Revision Changes Path
1.1
jakarta-log4j/src/java/org/apache/log4j/spi/ThrowableInformation.java
Index: ThrowableInformation.java
===================================================================
/*
* Copyright (C) The Apache Software Foundation. All rights reserved.
*
* This software is published under the terms of the Apache Software
* License version 1.1, a copy of which has been included with this
* distribution in the LICENSE.APL file. */
package org.apache.log4j.spi;
import java.io.Writer;
import java.io.PrintWriter;
import java.util.Vector;
/**
*/
public class ThrowableInformation implements java.io.Serializable {
private transient Throwable throwable;
private String[] rep;
static private VectorWriter vw = new VectorWriter();
public
ThrowableInformation(Throwable throwable) {
this.throwable = throwable;
}
public
Throwable getThrowable() {
return throwable;
}
public
String[] getThrowableStrRep() {
if(rep != null) {
return (String[]) rep.clone();
} else {
throwable.printStackTrace(vw);
rep = vw.toStringArray();
vw.clear();
return rep;
}
}
}
class VectorWriter extends PrintWriter {
private Vector v;
VectorWriter() {
super(new NullWriter());
v = new Vector();
}
public
void println(Object o) {
v.add(o.toString());
}
// JDK 1.1.x apprenly uses this form of println while in
// printStackTrace()
public
void println(char[] s) {
v.add(new String(s));
}
public
void println(String s) {
v.add(s);
}
public
String[] toStringArray() {
int len = v.size();
String[] sa = new String[len];
for(int i = 0; i < len; i++) {
sa[i] = (String) v.elementAt(i);
}
return sa;
}
public
void clear() {
v.setSize(0);
}
}
class NullWriter extends Writer {
public
void close() {
}
public
void flush() {
}
public
void write(char[] cbuf, int off, int len) {
}
}
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