[jboss-jira] [JBoss JIRA] Commented: (JBRULES-1946) Deserializing a KnowledgeBase object throws a java.io.EOFException
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https://jira.jboss.org/jira/browse/JBRULES-1946?page=com.atlassian.jira.p...
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Nestor Tarin Burriel commented on JBRULES-1946:
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Hi,
I'm using this 3 methods for serializing my KnowledgeSession:
public void saveKSession(FileOutputStream out) throws IOException {
DroolsObjectOutputStream droolsOut = new DroolsObjectOutputStream(out);
droolsOut.writeObject(ksession.getKnowledgeBase());
Marshaller mas = createMarshaller(ksession.getKnowledgeBase());
mas.marshall(droolsOut, ksession);
}
public void loadKsession(FileInputStream input) throws IOException,
ClassNotFoundException {
DroolsObjectInputStream droolsIn = new DroolsObjectInputStream(input);
KnowledgeBase kbase = (KnowledgeBase) droolsIn.readObject();
Marshaller mas = createMarshaller(kbase);
ksession = mas.unmarshall(droolsIn);
}
private Marshaller createMarshaller(KnowledgeBase kbase) {
ObjectMarshallingStrategyAcceptor acceptor = MarshallerFactory
.newClassFilterAcceptor(new String[] { "*.*" });
ObjectMarshallingStrategy strategy = MarshallerFactory
.newSerializeMarshallingStrategy(acceptor);
return MarshallerFactory.newMarshaller(kbase,
new ObjectMarshallingStrategy[] { strategy });
}
When the ksession has the WorkingMemory empty everything works fine, but if the WM has
facts when loading I get the EOF error listed above.
Hope to help,
Nestor
Deserializing a KnowledgeBase object throws a java.io.EOFException
------------------------------------------------------------------
Key: JBRULES-1946
URL: https://jira.jboss.org/jira/browse/JBRULES-1946
Project: Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: drools-core
Affects Versions: 5.0.0.M4, 5.0.0.M5
Environment: Ubuntu 8.10
Reporter: Simon Kelly
Assignee: Edson Tirelli
Fix For: 5.0.1.FINAL
Attachments: drools.test.zip, DroolsTest.java, Sample.drl, Sample1.drl,
Sandbox2.java
A java.io.EOFException is thrown when reading a serialized KnowledgeBase object from a
file.
java.io.EOFException
at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2281)
at
java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2750)
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:780)
at java.io.ObjectInputStream.<init>(ObjectInputStream.java:280)
at
org.drools.common.DroolsObjectInputStream.<init>(DroolsObjectInputStream.java:55)
at
org.drools.common.DroolsObjectInputStream.<init>(DroolsObjectInputStream.java:49)
at org.drools.common.AbstractRuleBase.readExternal(AbstractRuleBase.java:227)
at org.drools.reteoo.ReteooRuleBase.readExternal(ReteooRuleBase.java:173)
at org.drools.impl.KnowledgeBaseImpl.readExternal(KnowledgeBaseImpl.java:83)
at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1792)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1751)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at com.sample.DroolsTest.read(DroolsTest.java:75)
at com.sample.DroolsTest.testIO(DroolsTest.java:50)
at com.sample.DroolsTest.main(DroolsTest.java:40)
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