RuleTerminalNode oldRtn = null;
if ( rtnLeftTuple != null ) {
oldRtn = ( RuleTerminalNode ) rtnLeftTuple.getSink();
}
ConditionalExecution conditionalExecution = branchEvaluator.evaluate( leftTuple, wm, cbm.context );
RuleTerminalNode newRtn = null;
boolean breaking = false;
if ( conditionalExecution != null ) {
newRtn = ( RuleTerminalNode ) conditionalExecution.getSink().getFirstLeftTupleSink();