Can you not get a reference to a DetailLine in the LHS? If you have not inserted DetailLine objects into working memory how can you expect to retract them? If you have inserted DetailLine's into working memory what does query "Open RTV Lines" return, can it be joined into the LHS? (or split into two rules)? ------------------------------ *From:* rules-users-bounces(a)lists.jboss.org [mailto: rules-users-bounces(a)lists.jboss.org] *On Behalf Of *Ronald R. DiFrango *Sent:* 03 October 2007 14:01 *To:* Rules Users List *Subject:* [rules-users] Retract in a function All, I have the following function that I call from all of my rules. When I execute this function, I need to retract that object from working memory. The problem is that when I insert the comment line below I get a compiler error saying that I can only issue a retract on fact handles. Here is an example of my rule plus the function: rule "QTY Percentage tolerance - Approval" salience -25 no-loop true when rtvHeader : RtvHeader( totalAmount : totalAmount, status not in ( StatusConstants.MATCHED, StatusConstants.APPROVAL) ) repaymentCode : RepaymentCode( code == "QTY", matchApprv == "Y", tolDollar ==0, tolPercent != 0, tolPercent : tolPercent ) qtyOutput : QTYOutput( sumRTVQty : sumRTVQty , sumCmAndRnr : sumCmAndRnr ) eval( qtyPercentage(qtyOutput, totalAmount, tolPercent) ) then System.out.println("QTY Percentage tolerance - No Approval"); rtvHeader.setStatus(StatusConstants.APPROVAL ); openRTVLines(drools.getWorkingMemory(), drools.getWorkingMemory().getQueryResults( "Open RTV Lines" ), StatusConstants.MATCHED_WITHIN_TOLERANCE); end function void openRTVLines(WorkingMemory workingMemory, QueryResults results, String status) { System.out.println( "We have " + results.size() + " Open RTV Lines" ); for ( Iterator it = results.iterator(); it.hasNext(); ) { QueryResult result = ( QueryResult ) it.next (); DetailLine line = ( DetailLine ) result.get( "line" ); line.setStatus(status); // I need to add this in // workingMemory.retract(line); } } Thanks in advance, Ron

I have now tried the following and it did not seem to have the intended result of removing the detail line from working memory: function void openRTVLines(WorkingMemory workingMemory, QueryResults results, String status) { System.out.println( "We have " + results.size() + " Open RTV Lines" ); for ( Iterator it = results.iterator(); it.hasNext(); ) { QueryResult result = ( QueryResult ) it.next (); DetailLine line = ( DetailLine ) result.get( "line" ); line.setStatus(status); // Now retract those objects from Working Memory FactHandle[] handles = result.getFactHandles(); System.out.println("handles.length : " + handles.length); for(int i = 0; i < handles.length; i++) { System.out.println("Retracting : "); workingMemory.retract(handles[i]); } } } Any other thoughts out there? On 10/3/07, Ronald R. DiFrango < ron.difrango(a)gmail.com&gt; wrote: > > Michael, > > Those detail lines are in working memory for sure. In fact the query it > self only works on working memory objects. > > As far as I know you can not place the results of a queryResult in the > LHS. > > Ron > > On 10/3/07, Anstis, Michael (M.) < manstis1(a)ford.com&gt; wrote: > > > > Can you not get a reference to a DetailLine in the LHS? > > > > If you have not inserted DetailLine objects into working memory how > > can you expect to retract them? > > > > If you have inserted DetailLine's into working memory what does query > > "Open RTV Lines" return, can it be joined into the LHS? (or split into two > > rules)? > > > > ------------------------------ > > *From:* rules-users-bounces(a)lists.jboss.org [mailto: > > rules-users-bounces(a)lists.jboss.org] *On Behalf Of *Ronald R. DiFrango > > *Sent:* 03 October 2007 14:01 > > *To:* Rules Users List > > *Subject:* [rules-users] Retract in a function > > > > All, > > > > I have the following function that I call from all of my rules. When > > I execute this function, I need to retract that object from working memory. > > The problem is that when I insert the comment line below I get a compiler > > error saying that I can only issue a retract on fact handles. > > > > Here is an example of my rule plus the function: > > > > rule "QTY Percentage tolerance - Approval" > > salience -25 > > no-loop true > > when > > rtvHeader : RtvHeader( totalAmount : totalAmount, status not > > in ( StatusConstants.MATCHED, StatusConstants.APPROVAL) ) > > repaymentCode : RepaymentCode( code == "QTY", matchApprv == > > "Y", tolDollar ==0, tolPercent != 0, tolPercent : tolPercent ) > > qtyOutput : QTYOutput( sumRTVQty : sumRTVQty , sumCmAndRnr : > > sumCmAndRnr ) > > eval( qtyPercentage(qtyOutput, totalAmount, tolPercent) ) > > then > > System.out.println("QTY Percentage tolerance - No Approval"); > > rtvHeader.setStatus(StatusConstants.APPROVAL ); > > openRTVLines(drools.getWorkingMemory(), > > drools.getWorkingMemory().getQueryResults( "Open RTV Lines" ), > > StatusConstants.MATCHED_WITHIN_TOLERANCE); > > end > > > > function void openRTVLines(WorkingMemory workingMemory, QueryResults > > results, String status) > > { > > System.out.println( "We have " + results.size() + " Open RTV > > Lines" ); > > for ( Iterator it = results.iterator(); it.hasNext(); ) { > > QueryResult result = ( QueryResult ) it.next (); > > DetailLine line = ( DetailLine ) result.get( "line" ); > > line.setStatus(status); > > > > // I need to add this in > > // workingMemory.retract(line); > > } > > } > > > > Thanks in advance, > > > > Ron > > > > > > >