private boolean consolidateNestedPlans(WindowOperator winOpTo, WindowOperator winOpFrom, IOptimizationContext context) throws AlgebricksException { if (winOpTo.hasNestedPlans()) { AggregateOperator aggTo = getAggregateRoot(winOpTo.getNestedPlans()); if (aggTo == null) { return false; } AggregateOperator aggFrom = getAggregateRoot(winOpFrom.getNestedPlans()); if (aggFrom == null) { return false; } if (!IsomorphismUtilities.isOperatorIsomorphicPlanSegment(aggTo.getInputs().get(0).getValue(), aggFrom.getInputs().get(0).getValue())) { return false; } aggTo.getVariables().addAll(aggFrom.getVariables()); aggTo.getExpressions().addAll(aggFrom.getExpressions()); context.computeAndSetTypeEnvironmentForOperator(aggTo); } else { setAll(winOpTo.getNestedPlans(), winOpFrom.getNestedPlans()); setAll(winOpTo.getFrameValueExpressions(), winOpFrom.getFrameValueExpressions()); setAll(winOpTo.getFrameStartExpressions(), winOpFrom.getFrameStartExpressions()); setAll(winOpTo.getFrameEndExpressions(), winOpFrom.getFrameEndExpressions()); setAll(winOpTo.getFrameExcludeExpressions(), winOpFrom.getFrameExcludeExpressions()); winOpTo.setFrameExcludeNegationStartIdx(winOpFrom.getFrameExcludeNegationStartIdx()); winOpTo.getFrameOffset().setValue(winOpFrom.getFrameOffset().getValue()); winOpTo.setFrameMaxObjects(winOpFrom.getFrameMaxObjects()); } return true; }