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From "Marcin (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CAMEL-4854) BAM - database constraint violation when restaring application
Date Tue, 03 Jan 2012 14:25:39 GMT

    [ https://issues.apache.org/jira/browse/CAMEL-4854?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13178749#comment-13178749
] 

Marcin commented on CAMEL-4854:
-------------------------------

I tried to solve on my own, and the problem occurs because of invalid XML configuration. The
BAM example that is in binary distribution 

<bean id="activities" class="org.apache.camel.example.bam.MyActivities">
        <property name="jpaTemplate" ref="jpaTemplate"/>
        <property name="transactionTemplate" ref="transactionTemplate"/>
    </bean>

should be changed to 

<bean id="activities" class="org.apache.camel.example.bam.MyActivities">
        <constructor-arg><ref bean="jpaTemplate"/></constructor-arg>
        <constructor-arg><ref bean="transactionTemplate"/></constructor-arg>
    </bean>

Second version calls valid constructor for ProcessBuilder which creates ProcessName. The first
one leaves process name as null.
                
> BAM - database constraint violation when restaring application
> --------------------------------------------------------------
>
>                 Key: CAMEL-4854
>                 URL: https://issues.apache.org/jira/browse/CAMEL-4854
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-bam
>    Affects Versions: 2.8.2
>            Reporter: Marcin
>
> Take BAM example from http://camel.apache.org/bam-example.html  (or any other one, it
doesn't matter).
> Here is the one I'm using:
>         ActivityBuilder request = activity("eaiBroker:topic:SOME_TOPIC?concurrentConsumers=1").name("Request")
>                 .correlate(xpath("/MessageRequest/@Id").stringResult());
>         ActivityBuilder response = activity("eaiBroker:topic:SOME_OTHER_TOPIC?concurrentConsumers=1").name("Response")
>                 .correlate(xpath("MessageResponse/@Id").stringResult());
>         response
>                 .starts().after(request.completes())
>                 .expectWithin(seconds(15))
>                 .errorIfOver(seconds(30))
>                 .to("log:com.eai?level=error");
>  First run of the application and everything works. Restart application and try to activate
one of BAM rules, there will be an exception that database constraint has been violated. Every
time application is started, Camel tries to do following sql insert
> insert into CAMEL_ACTIVITYDEFINITION (name, processDefinition_id, id) values (?, ?, ?)
> but name columne must be unique in CAMEL_ACTIVITYDEFINITION .
> Workaround for this is to purge BAM tables every time you want to restart the application,
but it's not a solution.

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