mcconnell 02/03/14 04:51:36
Added: enterprise/orb/src/java/org/apache/orb/util
ExceptionHelper.java
Log:
support for exception causal packaging for remote exceptions
Revision Changes Path
1.1
jakarta-avalon-apps/enterprise/orb/src/java/org/apache/orb/util/ExceptionHelper.java
Index: ExceptionHelper.java
===================================================================
/*
* @(#)ExceptionHelper.java
*
* Copyright 2000 OSM SARL. All Rights Reserved.
*
* This software is the proprietary information of OSM SARL.
* Use is subject to license terms.
*
* @author Stephen McConnell
* @version 1.0 24/02/2001
*/
package org.apache.orb.util;
/**
* General utilities supporting the packaging of exception messages.
*/
public class ExceptionHelper
{
/**
* Prints the exception to the standard error out together with
* cause statements.
* @param e the exception to print
*/
public static void printException( Throwable e )
{
printException( null, e );
}
/**
* Prints the exception to the standard error out together with
* cause statements.
* @param label label identifying the error
* @param e the exception to print
*/
public static void printException( String label, Throwable e )
{
printException( label, e, null );
}
/**
* Prints the exception to the standard error out together with
* source and cause statements.
* @param source the source of the request
* @param label label identifying the error
* @param e the exception to print
*/
public static void printException( String label, Throwable e, Object
source )
{
printException( label, e, source, false );
}
/**
* Prints the exception to the standard error out together with
* source and cause statements.
* @param source the source of the request
* @param label label identifying the error
* @param e the exception to print
*/
public static void printException( String label, Throwable e, Object
source, boolean trace )
{
java.io.PrintStream out = System.err;
synchronized( out )
{
out.println( "================================================="
);
if( label != null ) out.println( "Message: " + label );
if( source != null ) out.println( "Source: " + source );
out.println( "Exception: " + e.toString() );
if( e.getCause() != null ) printCause( out, e );
out.println( "================================================="
);
if( trace ) e.printStackTrace();
out.println( "================================================="
);
}
}
private static void printCause( java.io.PrintStream out, Throwable e )
{
Throwable cause = e.getCause();
out.println( "Cause: " + cause.toString() );
if( cause.getCause() != null ) printCause( out, cause );
}
public static String packException( final String message, final Throwable
e )
{
String error = "Message: " + message;
if( e == null ) return error;
error = error + "\nException: " + e.toString();
return packCause( error, e.getCause() );
}
private static String packCause( String s, Throwable cause )
{
if( cause == null ) return s;
s = s + "\nCause: " + cause.toString();
return packCause( s, cause.getCause() );
}
public static void printMessage( String message )
{
java.io.PrintStream out = System.out;
synchronized( out )
{
out.println( message );
}
}
public static String packExceptionAsHTML( final String message, final
Throwable e )
{
String header = "<html><body><table>";
String footer = "</table></body></html>";
String error = header + "<tr bgcolor='#ccccff'><td
valign=top>Message</td><td>" + message + "</td></tr>";
if( e == null ) return error + footer;
error = error + "<tr><td valign='top'>Exception</td><td>"
+ e.getClass().getName() + " <br>" + e.getMessage() +
"</td></tr>";
return packCauseInTable( error, e.getCause() ) + footer;
}
private static String packCauseInTable( String s, Throwable cause )
{
if( cause == null ) return s;
s = s + "<tr><td valign='top'>Cause:</td><td>"
+ cause.getClass().getName() + " <br>" + cause.getMessage() +
"</td></tr>";
return packCauseInTable( s, cause.getCause() );
}
}
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