[jboss-jira] [JBoss JIRA] Created: (JBRULES-695) Cannot reference a global in a query.

[Jack Curtin (JIRA)]

Cannot reference a global in a query.
-------------------------------------

                 Key: JBRULES-695
                 URL: http://jira.jboss.com/jira/browse/JBRULES-695
             Project: JBoss Rules
          Issue Type: Bug
      Security Level: Public (Everyone can see)
    Affects Versions: 3.0.5, 3.0.4
         Environment: Windows XP using JBoss Eclipse IDE with drools plugin.
            Reporter: Jack Curtin
         Assigned To: Mark Proctor


I have a query that references a global, and I get the following error during startup:
org.drools.rule.InvalidRulePackage: Unable to return Declaration for identifier 'gbl_deletecardnumber'

Relevant code from rule file follows:

import java.lang.String;
import com.m2syscorp.i24card.rulesengine.facts.CardHolder;

global String gbl_deletecardnumber

query "delete cardholder"
     cardholderobj : CardHolder (cardnum == gbl_deletecardnumber)
end;

Relevant Java code follows:

public class CardHolder implements Serializable {

    private String cardnum;

	public String getCardnum() {
		return cardnum;
	}
	public void setCardnum(String cardnum) {
		this.cardnum = cardnum;
	}
}

    public void deleteCardHolderFromWorkingMemory(WorkingMemory workingMemory, String sDeleteCardNumber) {
    	
    	workingMemory.setGlobal("gbl_deletecardnumber", sDeleteCardNumber);    	
    	QueryResults results = workingMemory.getQueryResults("delete cardholder");
    	for (Iterator it = results.iterator(); it.hasNext(); ) {
    		QueryResult result = (QueryResult) it.next();
    		CardHolder chDelObj = (CardHolder) result.get("cardholderobj");
    		FactHandle fhCardHolder = workingMemory.getFactHandle(chDelObj);
    		workingMemory.retractObject(fhCardHolder);
    		break;  // should only be one matching CardHolder object.
    	}
    }

As you can see from the Java code, my goal is to be able to set the global variable gbl_deletecardnumber with a card number string, call the query which will find the CardHolder object with the matching card number, and then retract that object.


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