[rules-users] Reading a Guvnor PKG from drools API

[Stephen Masters]

It looks legit to me code-wise (I have some almost identical code, which works just fine).

Are you using the same version of Drools in your project as the Guvnor you downloaded the package from?

Steve


On 22 May 2013, at 10:19, abhinay_agarwal <abhinay_agarwal at infosys.com> wrote:

> Hey,
> 
> I was trying to read a package(ResourceType.PKG), which i downloaded from
> Guvnor, using KnowledgeBuilder, but I consistently get the following error
> while trying to access the file.
> 
> Here's my code and the error,
> 
> **Code**
> 
> KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
> 			kbuilder.add( ResourceFactory.newClassPathResource( "Goal Creation
> Charges.pkg", getClass() ), ResourceType.PKG );
> 			if ( kbuilder.hasErrors() ) {
> 			System.err.println( kbuilder.getErrors().toString() );
> 			}
> 			kbase = KnowledgeBaseFactory.newKnowledgeBase();
> 			kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
> 
> 
> 
> **Error**
> 
> java.lang.RuntimeException: java.io.StreamCorruptedException: invalid stream
> header: 7061636B
> 	at
> org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:724)
> 	at
> org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:51)
> 	at
> org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:40)
> 	at
> com.infosys.fps.drools.adapter.DroolsAdapter.readKnowledgeBase(DroolsAdapter.java:80)
> 	at com.infosys.fps.drools.adapter.DroolsAdapter.main(DroolsAdapter.java:20)
> Caused by: java.io.StreamCorruptedException: invalid stream header: 7061636B
> 	at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:783)
> 	at java.io.ObjectInputStream.<init>(ObjectInputStream.java:280)
> 	at
> org.drools.common.DroolsObjectInputStream.<init>(DroolsObjectInputStream.java:68)
> 	at
> org.drools.core.util.DroolsStreamUtils.streamIn(DroolsStreamUtils.java:205)
> 	at
> org.drools.core.util.DroolsStreamUtils.streamIn(DroolsStreamUtils.java:189)
> 	at
> org.drools.compiler.PackageBuilder.addPackageFromInputStream(PackageBuilder.java:819)
> 	at
> org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:711)
> 	... 4 more
> 
> 
> I have tried using both binary and source from guvnor, but neither of them
> works. I get the same error. Is there something m doing wrong ?
> 
> Thanks,
> Abhinay
> 
> 
> 
> --
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