MySQL Bugs: #71850: init() is called twice on exception interceptors

Bug #71850	init() is called twice on exception interceptors
Submitted:	26 Feb 2014 22:59	Modified:	3 Apr 2014 16:00
Reporter:	Jess Balint	Email Updates:
Status:	Closed	Impact on me:	None
Category:	Connector / J	Severity:	S3 (Non-critical)
Version:		OS:	Any
Assigned to:	Alexander Soklakov	CPU Architecture:	Any
Tags:	interceptor

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Description:
The init() method of exception interceptors is called once by:

    Util.loadExtensions()

and a second time by:

    ConnectionImpl.ExceptionInterceptorChain.init()

How to repeat:
create a connection with an exception interceptor and it will be called twice

Suggested fix:
don't call init() for each interceptor in ExceptionInterceptorChain.init()

Added the following entry into the Connector/J 5.1.31 changelog:

"When exception interceptors were used, the init() method was called twice for each exception interceptor, once by Util.loadExtensions() and again by ConnectionImpl.ExceptionInterceptorChain.init(). This fix eliminates the calls by ExceptionInterceptorChain.init()."