[jboss-jira] [JBoss JIRA] Commented: (JBRULES-532) Query feature doesnt seem to work if there is more than one query.

Query feature doesnt seem to work if there is more than one query. ------------------------------------------------------------------ Key: JBRULES-532 URL: http://jira.jboss.com/jira/browse/JBRULES-532 Project: JBoss Rules Issue Type: Bug Security Level: Public(Everyone can see) Reporter: Sridhar Chandrasekharan Assigned To: Edson Tirelli Fix For: 3.0.5 Attachments: rules.zip Consider the following:- ******************************************************************************* 1) Foo.java package com.foo; public class Foo { private int a; private int b; public Foo(int a, int b) { super(); this.a = a; this.b = b; } public boolean test() { return (a > b); } public int getA() { return a; } public int getB() { return b; } } ******************************************************************************************* 2) FooTest.java package com.foo; import java.io.InputStreamReader; import java.io.*; import java.util.*; import org.drools.RuleBase; import org.drools.RuleBaseFactory; import org.drools.WorkingMemory; import org.drools.compiler.PackageBuilder; import org.drools.rule.Package; import org.drools.QueryResults; import org.drools.QueryResult; public class FooTest { /** * This is a sample file to launch a rule package from a rule source file. */ public static final void main(String[] args) { try { //load up the rulebase RuleBase ruleBase = readRule(); WorkingMemory workingMemory = ruleBase.newWorkingMemory(); //go ! workingMemory.fireAllRules(); QueryResults results = workingMemory.getQueryResults( "Foo query" ); if(results == null) { System.out.println("Result is null"); return; } System.out.println( "we have " + results.size() ); for ( Iterator it = results.iterator(); it.hasNext(); ) { QueryResult result = ( QueryResult ) it.next(); Foo foo = ( Foo ) result.get( "foo" ); System.out.println( "A="+foo.getA() + " B=" + foo.getB()); } } catch (Throwable t) { t.printStackTrace(); } } /** * Please note that this is the "low level" rule assembly API. */ private static RuleBase readRule() throws Exception { //read in the source Reader source = new InputStreamReader( FooTest.class.getResourceAsStream( "/Foo.drl" ) ); //optionally read in the DSL (if you are using it). //Reader dsl = new InputStreamReader( DroolsTest.class.getResourceAsStream( "/mylang.dsl" ) ); //Use package builder to build up a rule package. //An alternative lower level class called "DrlParser" can also be used... PackageBuilder builder = new PackageBuilder(); //this wil parse and compile in one step //NOTE: There are 2 methods here, the one argument one is for normal DRL. builder.addPackageFromDrl( source ); //Use the following instead of above if you are using a DSL: //builder.addPackageFromDrl( source, dsl ); //get the compiled package (which is serializable) Package pkg = builder.getPackage(); //add the package to a rulebase (deploy the rule package). RuleBase ruleBase = RuleBaseFactory.newRuleBase(); ruleBase.addPackage( pkg ); return ruleBase; } } ************************************************** 3) Foo.drl #created on: Oct 9, 2006 package com.foo rule "Initialization rule" when #conditions then assert(new Foo(1,1)); assert(new Foo(2,1)); assert(new Foo(2,3)); assert(new Foo(3,2)); assert(new Foo(3,4)); assert(new Foo(4,3)); end query "Foo query" foo : Foo() end **************************************** The output is as follows:- we have 6 A=1 B=1 A=2 B=1 A=2 B=3 A=3 B=2 A=3 B=4 A=4 B=3 ***************************************** Now add another query to the Foo.drl file query "Bar query" foo : Foo() end and the output is Result is null Adding a second query caused the first query to stop working properly.