[rules-users] Not able to detect how to correct ERR 102

[ankit3j]

Thanks Wolfgand Laun. Finally it worked. It was indeed a translation error
as the VM was not able to find the DSL file. I changed the content as
suggested, included an expander statement and it worked fine.


On Fri, Mar 21, 2014 at 10:33 PM, laune [via Drools] <
ml-node+s46999n4028907h99 at n3.nabble.com> wrote:

> The corrected version of dsl and dslr works fine.
> -----------
> [condition][]There is a Customer with first name {name}=
>                  $customer : Customer(firstName == {name})
> [consequence][]Greet Customer=
>                    System.out.println("Hello " +
> $customer.getFirstName());
> -----------
> package dsltest;
> rule "hello rule"
> when
>     There is a Customer with first name "David"
> then
>     Greet Customer
> end
> ------------
>
> You don't have to write the DSL all in one line. (I fixed that some time
> ago.)
>
> The error message suggests that translation fails.
> 1) Make sure the DSLR is *exactly* as above. (The package could be
> different, and there is tolerance w.r.t. spacing between words.)
> 2) ALWAYS print builder errors (see below).
> 3) Make sure you pass resources correctly to the builder. This is how
> it is done for 5.x:
>
>         KnowledgeBaseConfiguration kBaseConfig =
>             KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
>         KnowledgeBuilderConfiguration kbConfig =
>             KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration();
>         KnowledgeBuilder kBuilder =
>             KnowledgeBuilderFactory.newKnowledgeBuilder( kbConfig );
>
>         Resource dsl  = ResourceFactory.newFileResource( dslPath );
>         Resource dslr = ResourceFactory.newFileResource( dslrPath );
>         long t0 = System.currentTimeMillis();
>         kBuilder.add( dsl,  ResourceType.DSL );
>         kBuilder.add( dslr, ResourceType.DSLR );
>         if( kBuilder.hasErrors() ){
>             System.err.println( ">>> compilation errors >>>" );
>             KnowledgeBuilderErrors errors = kBuilder.getErrors();
>             for( KnowledgeBuilderError err: errors ){
>                 System.err.println( err.getMessage() );
>             }
>             System.err.println( "<<< compilation errors <<<" );
>             throw new IllegalStateException( "compile errors" );
>         }
>         kBase = KnowledgeBaseFactory.newKnowledgeBase( kBaseConfig );
>         kBase.addKnowledgePackages( kBuilder.getKnowledgePackages() );
>         kSession = kBase.newStatefulKnowledgeSession();
>
> -W
>
>
>
>




-----
-- Ankit
--
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