Declare new type Jboss Drools - jboss

Question

i need declare a new type in my drl like this example.
package com.sample
import com.sample.DroolsTest.Message;
declare Variavel
valor : Integer
end
rule "Hello World"
when
m : Message( status == Message.HELLO, myMessage : message )
-----> v : Variavel() Problem here, the variable is not instantiated
then
System.out.println( myMessage );
m.setMessage( "Goodbye cruel world" );
m.setStatus( Message.GOODBYE );
update( m );
end
rule "GoodBye"
when
Message( status == Message.GOODBYE, myMessage : message )
then
System.out.println( myMessage );
end
My problem: I want use the variable without put this code
FactType personType = kbase.getFactType( "com.sample","Variavel" );
Object test = personType.newInstance();
ksession.insert(test);
Its possible use the declared field without put this code when i fire the rule, like a static field?

Answer 1

A type declaration in Drools is like declaring a class in Java. You have the type there, but no instances. What you can do is have a higher priority rule instantiate and insert it as a fact instead of having the application doing it. E.g.:
declare Variavel
valor : Integer
end
rule "create variable"
salience 100
when
then
insert( new Variavel() );
end
rule "Hello World"
when
m : Message( status == Message.HELLO, myMessage : message )
v : Variavel()
then
// do something
end