[rules-users] java.io.InvalidClassException: org.drools.rule.Package; local class incompatible: stream classdesc serialVersionUID = 400,local class serialVersionUID = 320

[vamshidhar reddy chitti]

which version of drools does the brms uses?
am deserializing with the drools 4.0 version..

"Anstis, Michael (M.)" <manstis1 at ford.com> schrieb:     Was the package serialised using a different version of  Drools to which you are trying to deserialise it?

       
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   From: rules-users-bounces at lists.jboss.org    [mailto:rules-users-bounces at lists.jboss.org] On Behalf Of vamshidhar    reddy chitti
Sent: 17 October 2007 11:18
To:    rules-users at lists.jboss.org
Subject: [rules-users]    java.io.InvalidClassException: org.drools.rule.Package;local class    incompatible: stream classdesc serialVersionUID = 400,local class    serialVersionUID = 320


   
hello
am using the binary package from drools brms and tying to    execute

            BinaryRuleBaseLoader loader = new    BinaryRuleBaseLoader();

            loader.addPackage( DroolsTest.class.getResourceAsStream(    "com.valuemomentum.ipru.camscontract.model.pkg" )    );
         RuleBase rb =    loader.getRuleBase();

but i get the following    errors,
org.drools.RuntimeDroolsException: java.io.InvalidClassException:    org.drools.rule.Package; local class incompatible: stream classdesc    serialVersionUID = 400, local class serialVersionUID =    320
    at    org.drools.util.BinaryRuleBaseLoader.addPackage(BinaryRuleBaseLoader.java:100)
       at    org.drools.util.BinaryRuleBaseLoader.addPackage(BinaryRuleBaseLoader.java:67)
       at com.sample.DroolsTest.readRule(DroolsTest.java:59)
    at    com.sample.DroolsTest.main(DroolsTest.java:28)
Caused by:    java.io.InvalidClassException: org.drools.rule.Package; local class    incompatible: stream classdesc serialVersionUID = 400, local class    serialVersionUID = 320
    at    java.io.ObjectStreamClass.initNonProxy(Unknown Source)
       at java.io.ObjectInputStream.readNonProxyDesc(Unknown    Source)
    at    java.io.ObjectInputStream.readClassDesc(Unknown Source)
       at java.io.ObjectInputStream.readOrdinaryObject(Unknown    Source)
    at java.io.ObjectInputStream.readObject0(Unknown    Source)
    at java.io.ObjectInputStream.readObject(Unknown    Source)
    at    org.drools.util.BinaryRuleBaseLoader.addPackage(BinaryRuleBaseLoader.java:82)
       ... 3 more


i tried replacing mvel jar file with mvel-snapshot jar    file...but same error...

anyone has idea.

how to use absolute    path in my application instead downloading binary package and    using.

thanx in advance.
vamshi
      

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