[jboss-jira] [JBoss JIRA] Created: (JBRULES-1180) java.lang.ClassCastException: org.drools.reteoo.RightInputAdapterNode

[Markus Reitz (JIRA)]

java.lang.ClassCastException: org.drools.reteoo.RightInputAdapterNode
---------------------------------------------------------------------

                 Key: JBRULES-1180
                 URL: http://jira.jboss.com/jira/browse/JBRULES-1180
             Project: JBoss Rules
          Issue Type: Bug
      Security Level: Public (Everyone can see)
    Affects Versions: 4.0.1
         Environment: JDK 1.5, Mac OS X 10.4
            Reporter: Markus Reitz
         Assigned To: Mark Proctor


Using the rules

  package test

  import java.awt.*;

  rule "A"

    when
      exists(x : Dimension(x_height : height) and
             y : Dimension(this!=x, height!=x_height))
           
    then
      System.out.println("A");
  end

  rule "B"

    when
      not(exists(x : Dimension(x_height : height) and
                 y : Dimension(this!=x, height!=x_height)))
           
    then
      System.out.println("B");
  end

as input for the following program (java DroolsTest <name of rule file>)

  import org.drools.*;
  import org.drools.compiler.*;
  import org.drools.rule.Package;

  import java.io.*;
  import java.awt.*;

  public class DroolsTest {
    private RuleBase        rules;
    private StatefulSession memory;

    public DroolsTest(File file) throws Exception {
      rules =RuleBaseFactory.newRuleBase();
      memory=rules.newStatefulSession();
    
      rules.addPackage(loadPackage(file));
    }

    protected Package loadPackage(File file) throws IOException {
      FileInputStream stream=null;
    
      try {
        stream=new FileInputStream(file);
    
        return(loadPackage(stream));
      }
      finally {
        if (stream!=null)
          stream.close();
      }
    }

    protected Package loadPackage(InputStream stream) throws IOException {
      try {
        PackageBuilder builder=new PackageBuilder();

        builder.addPackageFromDrl(new InputStreamReader(stream));

        return(builder.getPackage());
      }
      catch(Exception ex) {
        throw new IOException();
      }
    }
  
    public StatefulSession getSession() {
      return(memory);
    }
  
    public static void main(String ... args) {
      try {
        DroolsTest test=new DroolsTest(new File(args[0]));
      
        System.out.println("Inserting ...");
      
        test.getSession().insert(new Dimension(1,2));
        test.getSession().insert(new Dimension(2,3));
        test.getSession().insert(new Dimension(4,2));

        System.out.println("Done.");
      
        System.out.println("Firing rules ...");
      
        test.getSession().fireAllRules();
      
        System.out.println("Done.");
      }
      catch (Exception ex) {
        ex.printStackTrace();
      }
    }
  }

leads to

  java.lang.ClassCastException: org.drools.reteoo.RightInputAdapterNode
      at org.drools.reteoo.CompositeTupleSinkAdapter.addTupleSink(CompositeTupleSinkAdapter.java:17)
      at org.drools.reteoo.TupleSource.addTupleSink(TupleSource.java:79)
      at org.drools.reteoo.RightInputAdapterNode.attach(RightInputAdapterNode.java:127)
      at org.drools.reteoo.RightInputAdapterNode.attach(RightInputAdapterNode.java:131)
      at org.drools.reteoo.builder.BuildUtils.attachNode(BuildUtils.java:132)
      at org.drools.reteoo.builder.GroupElementBuilder$ExistsBuilder.build(GroupElementBuilder.java:290)
      at org.drools.reteoo.builder.GroupElementBuilder.build(GroupElementBuilder.java:69)
      at org.drools.reteoo.builder.GroupElementBuilder$NotBuilder.build(GroupElementBuilder.java:207)
      at org.drools.reteoo.builder.GroupElementBuilder.build(GroupElementBuilder.java:69)
      at org.drools.reteoo.builder.GroupElementBuilder$AndBuilder.build(GroupElementBuilder.java:111)
      at org.drools.reteoo.builder.GroupElementBuilder.build(GroupElementBuilder.java:69)
      at org.drools.reteoo.builder.ReteooRuleBuilder.addSubRule(ReteooRuleBuilder.java:136)
      at org.drools.reteoo.builder.ReteooRuleBuilder.addRule(ReteooRuleBuilder.java:109)
      at org.drools.reteoo.ReteooBuilder.addRule(ReteooBuilder.java:116)
      at org.drools.reteoo.ReteooRuleBase.addRule(ReteooRuleBase.java:268)
      at org.drools.common.AbstractRuleBase.addPackage(AbstractRuleBase.java:337)
      at DroolsTest.<init>(Unknown Source)
      at DroolsTest.main(Unknown Source)

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira