[rules-users] Drools Flow: Variable Persistence Strategies

[Dale Wyttenbach]

My pleasure.

Within ProcessInstanceInfo, I've got a similar observation about the
eventTypes member.  'private Set<EventType>' is currently commented out in
favor of 'private Set<String>'.  When using an Oracle hibernate dialect,
this results in the DDL 'create table ProcessInstanceInfo_eventTypes' which
yields the error 'ORA-00972: identifier is too long'.  I imagine this will
be resolved when the String is promoted to EventType but I thought you might
want to know.

2010/2/13 Mauricio Salatino <salaboy at gmail.com>

> done.. I will apply the patch into the trunk.. it seems to be correct.
> Thanks a lot!
>
> 2010/2/13 Dale Wyttenbach <dale.wyttenbach at gmail.com>
>
> Please see attached.
>>
>>
>> 2010/2/12 Mauricio Salatino <salaboy at gmail.com>
>>
>>> I just want to make sure before apply the patch that the change will not
>>> impact in other places.
>>> Thanks
>>>
>>>
>>> On Fri, Feb 12, 2010 at 5:38 PM, Mauricio Salatino <salaboy at gmail.com>wrote:
>>>
>>>> can you post both, previous and new, sql schema generated for the
>>>> VariableInstanceInfo and ProcessInstanceInfo tables?
>>>>
>>>>
>>>>
>>>> 2010/2/12 Dale Wyttenbach <dale.wyttenbach at gmail.com>
>>>>
>>>>> If you try to write a query that
>>>>> requires VariableInstanceInfo.processId, it won't work because that class
>>>>> has no processId member.
>>>>> I guessed that processInstanceId would be a better join column, and
>>>>> that worked (patch attached)
>>>>>
>>>>> Thanks for the reply.
>>>>>
>>>>> 2010/2/12 Mauricio Salatino <salaboy at gmail.com>
>>>>>
>>>>> Hmm..
>>>>>> I'm looking at the source and I see the following mapping:
>>>>>>
>>>>>> @OneToMany(cascade = CascadeType.ALL)
>>>>>>     @JoinColumn(name = "processId")
>>>>>>     @MapKey(name = "name")
>>>>>>     private Map<String, VariableInstanceInfo> variables          = new
>>>>>> HashMap<String, VariableInstanceInfo>();
>>>>>>
>>>>>> That makes me think that there is a join column called processId
>>>>>> between VariableInstanceInfo and ProcessInstanceInfo.
>>>>>>
>>>>>>
>>>>>> 2010/2/12 Dale Wyttenbach <dale.wyttenbach at gmail.com>
>>>>>>
>>>>>>> I have a patch for drools-persistence-jpa should anyone agree with me
>>>>>>> that ProcessInstanceInfo and VariableInstanceInfo should be joined by
>>>>>>> processInstanceId.
>>>>>>>
>>>>>>>
>>>>>>> On Fri, Feb 12, 2010 at 10:52 AM, Dale Wyttenbach <
>>>>>>> dale.wyttenbach at gmail.com> wrote:
>>>>>>>
>>>>>>>> I'm trying to adapt the StringVariablePersister presented in
>>>>>>>> http://blog.athico.com/2009/09/drools-flow-variable-persistence.html
>>>>>>>>
>>>>>>>> <http://blog.athico.com/2009/09/drools-flow-variable-persistence.html>I
>>>>>>>> can create process instances with variable "color":
>>>>>>>>
>>>>>>>>   private static WorkflowProcessInstance
>>>>>>>> startProcess(StatefulKnowledgeSession ksession, String color) {
>>>>>>>>     Map<String, Object> vars = new HashMap<String, Object>();
>>>>>>>>     vars.put("color", color);
>>>>>>>>     WorkflowProcessInstance p1 = (WorkflowProcessInstance)
>>>>>>>> ksession.startProcess("com.sample.ruleflow", vars);
>>>>>>>>     return p1;
>>>>>>>>   }
>>>>>>>>
>>>>>>>> I can count them:
>>>>>>>>
>>>>>>>> select
>>>>>>>>     count(*)
>>>>>>>> from
>>>>>>>>     ProcessInstanceInfo
>>>>>>>>
>>>>>>>> However I'm stymied as to counting process instances with a given
>>>>>>>> color, as there appears to be no join column between ProcessInstanceInfo and
>>>>>>>> VariableInstanceInfo.
>>>>>>>> Can such a query be written?
>>>>>>>>
>>>>>>>> Thanks.
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
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>>>>>>> rules-users at lists.jboss.org
>>>>>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> - http://salaboy.wordpress.com
>>>>>> - http://www.jbug.com.ar
>>>>>> - Salatino "Salaboy" Mauricio -
>>>>>>
>>>>>> _______________________________________________
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>>>>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>>>>
>>>>>>
>>>>>
>>>>> _______________________________________________
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>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> - http://salaboy.wordpress.com
>>>> - http://www.jbug.com.ar
>>>> - Salatino "Salaboy" Mauricio -
>>>>
>>>
>>>
>>>
>>> --
>>> - http://salaboy.wordpress.com
>>> - http://www.jbug.com.ar
>>> - Salatino "Salaboy" Mauricio -
>>>
>>> _______________________________________________
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>>> https://lists.jboss.org/mailman/listinfo/rules-users
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>>>
>>
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>>
>
>
> --
> - http://salaboy.wordpress.com
> - http://www.jbug.com.ar
> - Salatino "Salaboy" Mauricio -
>
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