org.logicalcobwebs.proxool
Class FatalSqlExceptionHelper

java.lang.Object
  org.logicalcobwebs.proxool.FatalSqlExceptionHelper

 class FatalSqlExceptionHelper
extends java.lang.Object

Will wrap up exceptions in another exception which can be defined at runtime.

Version:

$Revision: 1.4 $, $Date: 2005/07/01 08:02:50 $

Author:

billhorsman, $Author: billhorsman $ (current maintainer)

Field Summary

private static Log

LOG

Constructor Summary

FatalSqlExceptionHelper()

Method Summary

protected static java.lang.Throwable	getCause(java.lang.Throwable t) Tries to drill down into an exception to find its cause.
private static java.lang.reflect.Method	getMethod(java.lang.Object o, java.lang.String methodName)
protected static boolean	testException(ConnectionPoolDefinitionIF cpd, java.lang.Throwable t) Test to see if an exception is a fatal one
protected static boolean	testException(ConnectionPoolDefinitionIF cpd, java.lang.Throwable t, int level) Test to see if an exception is a fatal one
protected static void	throwFatalSQLException(java.lang.String className, java.lang.Throwable originalException) Throws a wrapped SQLException if a wrapper is defined

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LOG

private static final Log LOG

Constructor Detail

FatalSqlExceptionHelper

FatalSqlExceptionHelper()

Method Detail

throwFatalSQLException

protected static void throwFatalSQLException(java.lang.String className,
                                             java.lang.Throwable originalException)
                                      throws ProxoolException,
                                             java.sql.SQLException,
                                             java.lang.RuntimeException

Throws a wrapped SQLException if a wrapper is defined

Parameters:

className - the classname of the wrapping exception (must be either a RuntimeException or an SQLException). If null, then the original exception is rethrown.

originalException - the orginal exception

Throws:

ProxoolException - if there is an unexpected error with wrapping the exception

java.sql.SQLException - either the original exception, or a wrapped version of it

java.lang.RuntimeException - a wrapped up version of the orginal

testException

protected static boolean testException(ConnectionPoolDefinitionIF cpd,
                                       java.lang.Throwable t)

Test to see if an exception is a fatal one

Parameters:

cpd - the definition so we can find out what a fatal exception looks like

t - the exception to test

Returns:

true if it is fatal

testException

protected static boolean testException(ConnectionPoolDefinitionIF cpd,
                                       java.lang.Throwable t,
                                       int level)

Test to see if an exception is a fatal one

Parameters:

cpd - the definition so we can find out what a fatal exception looks like

t - the exception to test

level - the recursion level (max 20)

Returns:

true if it is fatal

getCause

protected static java.lang.Throwable getCause(java.lang.Throwable t)

Tries to drill down into an exception to find its cause. Only goes one level deep. Uses reflection to look at getCause(), getTargetException(), getRootCause() and finally getOriginalException() methods to see if it can find one. Doesn't throw an error - it will just log a warning and return a null if nothing was found.

Parameters:

t - the exception to look inside

Returns:

the original exception or null if none was found.

getMethod

private static java.lang.reflect.Method getMethod(java.lang.Object o,
                                                  java.lang.String methodName)