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Subject: [jboss-user] [jBPM] - ClassCastException in DynamicUtils when using JPAKnowledgeService.loadStateful
From: Wooi Joe Chuah <do-not-reply () jboss ! com>
Date: 2012-11-30 3:17:28
Message-ID: 2-779244-3-117790-1354245438439.jivesbs.jivemailuser () https://community ! jboss ! org
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Wooi Joe Chuah [https://community.jboss.org/people/joe.chuah] created the discussion
"ClassCastException in DynamicUtils when using \
JPAKnowledgeService.loadStatefulKnowledgeSession()"
To view the discussion, visit: https://community.jboss.org/message/779244#779244
--------------------------------------------------------------
Hi,
I've encountered the problem as stated above when using DynamicUtils to \
addDynamicSubProcess at the following line
ProcessEventSupport eventSupport = \
((InternalProcessRuntime)((InternalKnowledgeRuntime)ksession).getProcessRuntime()).getProcessEventSupport();
The reason as far as I know is because the ksession returned from \
JPAKnowledgeService.loadStatefulKnowledgeSession() or newStatefulKnowledgeSession() \
which is implemented using org.drools.persistence.jpa.KnowledgeStoreServiceImpl \
returns the ksession as a CommandBasedStatefulKnowledgeSession object instance.
The CommandBasedStatefulKnowledgeSession does not implement InternalKnowledgeRuntime \
and hence we hit a class cast exception.
The same problem does not occur when using a ksession from the \
KnowledgeBuilder>KnowledgeBase>ksession.
Any idea if CommandBasedStatefulKnowledgeSession is going to implement \
InternalKnowledgeRuntime in the future or there's gonna be a fix for using sessions \
which are loaded from DB? or is it a limitation
Thanks.
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17px; font-weight: normal;"> ClassCastException in DynamicUtils when using \
JPAKnowledgeService.loadStatefulKnowledgeSession() </h3>
<span style="margin-bottom: 10px;">
created by <a href="https://community.jboss.org/people/joe.chuah">Wooi Joe \
Chuah</a> in <i>jBPM</i> - <a \
href="https://community.jboss.org/message/779244#779244">View the full discussion</a> \
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<div class="jive-rendered-content"><p>Hi,</p><p style="min-height: 8pt; height: 8pt; \
padding: 0px;"> </p><p>I've encountered the problem as stated above when using \
DynamicUtils to addDynamicSubProcess at the following line</p><p style="min-height: \
8pt; height: 8pt; padding: 0px;"> </p><p>ProcessEventSupport eventSupport = \
((InternalProcessRuntime)((InternalKnowledgeRuntime)ksession).getProcessRuntime()).getProcessEventSupport();</p><p \
style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The reason as far as \
I know is because the ksession returned from \
JPAKnowledgeService.loadStatefulKnowledgeSession() or \
newStatefulKnowledgeSession()</p><p>which is implemented using \
org.drools.persistence.jpa.KnowledgeStoreServiceImpl </p><p>returns the ksession as a \
CommandBasedStatefulKnowledgeSession object instance.</p><p style="min-height: 8pt; \
height: 8pt; padding: 0px;"> </p><p>The CommandBasedStatefulKnowledgeSession \
does not implement InternalKnowledgeRuntime and hence we hit a class cast \
exception.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The \
same problem does not occur when using a ksession from the \
KnowledgeBuilder>KnowledgeBase>ksession.</p><p style="min-height: 8pt; height: \
8pt; padding: 0px;"> </p><p>Any idea if CommandBasedStatefulKnowledgeSession is \
going to implement InternalKnowledgeRuntime in the future or</p><p>there's gonna be a \
fix for using sessions which are loaded from DB? or is it a limitation</p><p \
style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Thanks.</p></div>
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<p style="margin: 0;">Reply to this message by <a \
href="https://community.jboss.org/message/779244#779244">going to Community</a></p> \
<p style="margin: 0;">Start a new discussion in jBPM at <a \
href="https://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2034">Community</a></p>
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