// ========================================================================
// $Id: MultiException.java,v 1.10 2004/05/09 20:32:49 gregwilkins Exp $
// Copyright 1999-2004 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// 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 net.lightbody.bmp.proxy.jetty.util;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.util.List;
/* ------------------------------------------------------------ */
/** Wraps multiple exceptions.
*
* Allows multiple exceptions to be thrown as a single exception.
*
* @version $Id: MultiException.java,v 1.10 2004/05/09 20:32:49 gregwilkins Exp $
* @author Greg Wilkins (gregw)
*/
public class MultiException extends Exception
{
private Object nested;
/* ------------------------------------------------------------ */
public MultiException()
{
super("Multiple exceptions");
}
/* ------------------------------------------------------------ */
public void add(Exception e)
{
if (e instanceof MultiException)
{
MultiException me = (MultiException)e;
for (int i=0;i<LazyList.size(me.nested);i++)
nested=LazyList.add(nested,LazyList.get(me.nested,i));
}
else
nested=LazyList.add(nested,e);
}
/* ------------------------------------------------------------ */
public int size()
{
return LazyList.size(nested);
}
/* ------------------------------------------------------------ */
public List getExceptions()
{
return LazyList.getList(nested);
}
/* ------------------------------------------------------------ */
public Exception getException(int i)
{
return (Exception) LazyList.get(nested,i);
}
/* ------------------------------------------------------------ */
/** Throw a multiexception.
* If this multi exception is empty then no action is taken. If it
* contains a single exception that is thrown, otherwise the this
* multi exception is thrown.
* @exception Exception
*/
public void ifExceptionThrow()
throws Exception
{
switch (LazyList.size(nested))
{
case 0:
break;
case 1:
throw (Exception)LazyList.get(nested,0);
default:
throw this;
}
}
/* ------------------------------------------------------------ */
/** Throw a multiexception.
* If this multi exception is empty then no action is taken. If it
* contains a any exceptions then this
* multi exception is thrown.
*/
public void ifExceptionThrowMulti()
throws MultiException
{
if (LazyList.size(nested)>0)
throw this;
}
/* ------------------------------------------------------------ */
public String toString()
{
if (LazyList.size(nested)>0)
return "net.lightbody.bmp.proxy.jetty.util.MultiException"+
LazyList.getList(nested);
return "net.lightbody.bmp.proxy.jetty.util.MultiException[]";
}
/* ------------------------------------------------------------ */
public void printStackTrace()
{
super.printStackTrace();
for (int i=0;i<LazyList.size(nested);i++)
((Throwable)LazyList.get(nested,i)).printStackTrace();
}
/* ------------------------------------------------------------------------------- */
/**
* @see java.lang.Throwable#printStackTrace(java.io.PrintStream)
*/
public void printStackTrace(PrintStream out)
{
super.printStackTrace(out);
for (int i=0;i<LazyList.size(nested);i++)
((Throwable)LazyList.get(nested,i)).printStackTrace(out);
}
/* ------------------------------------------------------------------------------- */
/**
* @see java.lang.Throwable#printStackTrace(java.io.PrintWriter)
*/
public void printStackTrace(PrintWriter out)
{
super.printStackTrace(out);
for (int i=0;i<LazyList.size(nested);i++)
((Throwable)LazyList.get(nested,i)).printStackTrace(out);
}
}