[drools-user] Please Help: Is it a bug or am I doing something wrong?

[Rahmouni, Maher]

Hi,

To show my problem, I'll give a simple example for illustration
purposes:
Let say, I have an Object 

myObject{ 
        private int id; 
        myObject(int i) {id=i;}
      public int getId(){return id;}
} 

And I have a rule file containing one rule:

<?xml version="1.0"?>
<rule-set name="myObject Example"
          xmlns="http://drools.org/rules";
          xmlns:java="http://drools.org/semantics/java";
          xmlns:xs="http://www.w3.org/2001/XMLSchema-instance";
          xs:schemaLocation="http://drools.org/rules rules.xsd
                             http://drools.org/semantics/java java.xsd">

    <import>myproject.myObject</import>
    
    <rule name="Rule">
        <parameter identifier="a">
            <class>myproject.myObject</class>
        </parameter>
        <parameter identifier="b">
            <class>myproject.myObject</class>
        </parameter>
        
        <java:condition>a.getId()!=b.getId()</java:condition>

        <java:consequence>
            System.out.println("myObject "+a.getId()+" is different from
myObject"+b.getId());
        </java:consequence>
    </rule>
</rule-set>

Case 1:
=======

O1 = new myObject(1);
O2 = new myObject(2);

workingMemory.assert(O1);
workingMemory.assert(O2);
workingMemory.fireAllRules();

In this case "Rule" get fired and I get the results:
myObject 1 is different from myObject 2
myObject 2 is different from myObject 1.

Case 2:
=======

Vector data = new Vector();

data.addElement(new myObject(1));
data.addElement(new myObject(2));

for(int i=0;i<data.size();i++)
   workingMemory.assertObject(data.elementAt(i));

And I tried with casting too:
for(int i=0;i<data.size();i++)
   workingMemory.assertObject((myObject)data.elementAt(i));


In this case "Rule" doesn't get fired and surely nothing happens. When I
check the Objects
In the working memory by doing this: 
List objects = workingMemory.getObjects();
System.out.println("List of Objects in the Memory:");
for(int i=0;i<objects.size();i++)
{
        System.out.println("myObject:
"+((myObject)objects.get(i)).getId());
}

I get:
 myObject 1
 myObject 2

Which means the objects are in fact in the working memory but why they
didn't trigger the rule to
be fired ????


Thanks in advance for your help

Maher Rahmouni