[jboss-jira] [JBoss JIRA] Closed: (JBRULES-3102) InvalidClassException while deserialize knowledgeBase

InvalidClassException while deserialize knowledgeBase ----------------------------------------------------- Key: JBRULES-3102 URL: https://issues.jboss.org/browse/JBRULES-3102 Project: Drools Issue Type: Bug Security Level: Public(Everyone can see) Components: drools-core Reporter: winton xu Assignee: Mark Proctor Priority: Critical org.drools.rule.MVELDialectRuntimeData have not serialVersionUID defined Error: {noformat} java.io.InvalidClassException: org.drools.rule.MVELDialectRuntimeData; local class incompatible: stream classdesc serialVersionUID = 2609855281272796208, local class serialVersionUID = 5166066541265170937 at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:562) ~[na:1.6.0_20] at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1583) ~[na:1.6.0_20] at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496) ~[na:1.6.0_20] at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1732) ~[na:1.6.0_20] at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) ~[na:1.6.0_20] at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351) ~[na:1.6.0_20] at java.util.HashMap.readObject(HashMap.java:1030) ~[na:1.6.0_20] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.6.0_20] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) ~[na:1.6.0_20] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) ~[na:1.6.0_20] at java.lang.reflect.Method.invoke(Method.java:597) ~[na:1.6.0_20] at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974) ~[na:1.6.0_20] at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1849) ~[na:1.6.0_20] at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753) ~[na:1.6.0_20] at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) ~[na:1.6.0_20] at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351) ~[na:1.6.0_20] at org.drools.rule.DialectRuntimeRegistry.readExternal(DialectRuntimeRegistry.java:59) ~[org.drools.core_5.3.0.SNAPSHOT.jar:5.3.0-SNAPSHOT] at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1792) ~[na:1.6.0_20] at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1751) ~[na:1.6.0_20] at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) ~[na:1.6.0_20] at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351) ~[na:1.6.0_20] at org.drools.rule.Package.readExternal(Package.java:191) ~[org.drools.core_5.3.0.SNAPSHOT.jar:5.3.0-SNAPSHOT] at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1792) ~[na:1.6.0_20] at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1751) ~[na:1.6.0_20] at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) ~[na:1.6.0_20] at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351) ~[na:1.6.0_20] at java.util.HashMap.readObject(HashMap.java:1030) ~[na:1.6.0_20] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.6.0_20] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) ~[na:1.6.0_20] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) ~[na:1.6.0_20] at java.lang.reflect.Method.invoke(Method.java:597) ~[na:1.6.0_20] at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974) ~[na:1.6.0_20] at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1849) ~[na:1.6.0_20] at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753) ~[na:1.6.0_20] at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) ~[na:1.6.0_20] at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351) ~[na:1.6.0_20] at org.drools.common.AbstractRuleBase.readExternal(AbstractRuleBase.java:270) ~[org.drools.core_5.3.0.SNAPSHOT.jar:5.3.0-SNAPSHOT] at org.drools.reteoo.ReteooRuleBase.readExternal(ReteooRuleBase.java:217) ~[org.drools.core_5.3.0.SNAPSHOT.jar:5.3.0-SNAPSHOT] at org.drools.impl.KnowledgeBaseImpl.readExternal(KnowledgeBaseImpl.java:115) ~[org.drools.core_5.3.0.SNAPSHOT.jar:5.3.0-SNAPSHOT] at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1792) ~[na:1.6.0_20] at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1751) ~[na:1.6.0_20] at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) ~[na:1.6.0_20] at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351) ~[na:1.6.0_20] {noformat} Detail: we serialize the KnowledgeBase by the following code. {noformat} ByteArrayOutputStream byteStream = new ByteArrayOutputStream(); ObjectOutputStream out = new ObjectOutputStream(byteStream); out.writeObject(_kbase); out.close(); setKnowledgeBaseContents(byteStream.toByteArray()); {noformat} we deserialize the knowledgebase by the following code. {noformat} ByteArrayInputStream bi = new ByteArrayInputStream(info.getData()); ObjectInputStream oi = new ObjectInputStream(bi); kbase = (KnowledgeBase) oi.readObject(); bi.close(); oi.close(); {noformat}