[rules-users] StackOverflowError when serializing KnowledgeBase

[Mark Proctor]

  On 27/07/2010 22:36, Andargor wrote:
> Second try, sorry for spamming. Does anyone have an idea why serialization of a large knowledge base fails with a stack error?
It's to do with Java's poor ability to serialise linked lists:
https://jira.jboss.org/browse/JBRULES-2335
https://jira.jboss.org/browse/JBRULES-946

Mark
> A.
>
> --- On Thu, 7/22/10, Andargor<andargor at yahoo.com>  wrote:
>
>> From: Andargor<andargor at yahoo.com>
>> Subject: Re: [rules-users] StackOverflowError when serializing KnowledgeBase
>> To: rules-users at lists.jboss.org
>> Date: Thursday, July 22, 2010, 8:12 PM
>> Sorry, forgot to mention, I have
>> tried 5.1.0M1, and yesterday's snapshot.
>>
>> --- On Thu, 7/22/10, Andargor<andargor at yahoo.com>
>> wrote:
>>
>>> From: Andargor<andargor at yahoo.com>
>>> Subject: StackOverflowError when serializing
>> KnowledgeBase
>>> To: rules-users at lists.jboss.org
>>> Date: Thursday, July 22, 2010, 8:10 PM
>>> Hello,
>>>
>>> After adding a few hundred rules, and with the same
>> code,
>>> KnowledgeBase serialization has started to generate
>>> StackOverflowError. I have increased the VM stack size
>> as a
>>> workaround, but I was hoping to implement something
>> more
>>> robust.
>>>
>>> I specifically need to serialize the KnowledgeBase,
>> and not
>>> the session.
>>>
>>> I'm using this code:
>>>
>>>      private void dumpKnowledgeBase(String file,
>>> KnowledgeBase kbase) {
>>>             try {
>>>             
>>>     FileOutputStream ostream = new
>>> FileOutputStream(file);
>>>             
>>>     DroolsObjectOutputStream p = new
>>> DroolsObjectOutputStream(ostream);
>>>             
>>>     p.writeObject(kbase);
>>>             
>>>     p.flush();
>>>             
>>>     ostream.close();
>>>             }
>>>             catch
>>> (Exception e) {
>>>             
>>>     System.err.println(e);
>>>             
>>>     e.printStackTrace();
>>>             
>>>     System.err.println("Could not write
>>> knowledge base "+file);
>>>             }
>>>      }
>>>
>>>
>>> This is due to writeObject recursion? Any ideas?
>>>
>>> A.
>>>
>>>
>>>
>>>
>>
>>       
>>
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>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>
>
>
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