[rules-users] Map<String,String> and modify() can't be together

[rjh]

Hi, 

I got a weird problem. A Java List/Map with generics can be used together
with modify() in the same rule. For example, a simple rule like the
following:

package com.sample
 
import java.util.Map;
import java.util.HashMap;

declare TestFact
    @propertyReactive
    data : String
end

rule "init"
    when 
        not TestFact()
    then
        insert (new TestFact());
end

rule "Test Rule"
    when
        $fact : TestFact()
    then
        System.out.println( "Hello" );
        Map<String,String> a = new HashMap<String,String>();
        modify ($fact) {setData("0")}
end

I got the following error message:

java.lang.RuntimeException: Error while creating KieBase[Message [id=1,
level=ERROR, path=rules/Sample.drl, line=18, column=0
   text=Unable to resolve type Map<String,String>:
Unable to find class 'Map<String,String>']]
	at
org.drools.compiler.kie.builder.impl.KieContainerImpl.getKieBase(KieContainerImpl.java:260)
	at
org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieSession(KieContainerImpl.java:400)
	at
org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieSession(KieContainerImpl.java:375)
	at com.sample.DroolsTest.main(DroolsTest.java:17)

However, if I remove "<String,String>" from "Map<String,String>", or remove
the "modify" line, the code is correct then. 

Thank you!

Jinghai




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