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

2013-05-22 Thread abhinay_agarwal 
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



--
View this message in context: 
http://drools.46999.n3.nabble.com/Reading-a-Guvnor-PKG-from-drools-API-tp4023921.html
Sent from the Drools: User forum mailing list archive at Nabble.com.
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users

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

2013-05-22 Thread 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_agar...@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
 
 
 
 --
 View this message in context: 
 http://drools.46999.n3.nabble.com/Reading-a-Guvnor-PKG-from-drools-API-tp4023921.html
 Sent from the Drools: User forum mailing list archive at Nabble.com.
 ___
 rules-users mailing list
 rules-users@lists.jboss.org
 https://lists.jboss.org/mailman/listinfo/rules-users


___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users

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

2013-05-22 Thread abhinay_agarwal 
Yes, all the jars are just fine, the above code works perfectly if I just
replace the ResourceType.PKG to ResoureType.DRL, but dunno why PKG doesnt
works.

Abhi



--
View this message in context: 
http://drools.46999.n3.nabble.com/Reading-a-Guvnor-PKG-from-drools-API-tp4023921p4023924.html
Sent from the Drools: User forum mailing list archive at Nabble.com.
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users

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

2013-05-22 Thread maunakea 
I saw the same error when there was a mismatch in ResourceType. You mention
you downloaded the package from Guvnor and that it work when you change the
ResourceType to drl. Can you check if the .pkg file is actually drl? Could
it be that you downloaded the drl as a .pkg file?



--
View this message in context: 
http://drools.46999.n3.nabble.com/Reading-a-Guvnor-PKG-from-drools-API-tp4023921p4023932.html
Sent from the Drools: User forum mailing list archive at Nabble.com.
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users

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

2013-05-22 Thread abhinay_agarwal 
I got the problem, if I Download the source of a package then it returns the
DRL file of the package and hence the resource type is PKG. While if i
download the binary form then the file contains the actual package and hence
the .PKG works here.

Abhi



--
View this message in context: 
http://drools.46999.n3.nabble.com/Reading-a-Guvnor-PKG-from-drools-API-tp4023921p4023934.html
Sent from the Drools: User forum mailing list archive at Nabble.com.
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users