/** * Unnest more complex structures. * * @return List of algebraic rewrite rules. */ public final static List<IAlgebraicRewriteRule> buildUnnestingRuleCollection() { List<IAlgebraicRewriteRule> xquery = new LinkedList<IAlgebraicRewriteRule>(); xquery.add(new PushSelectDownRule()); xquery.add(new SimpleUnnestToProductRule()); xquery.add(new ComplexUnnestToProductRule()); xquery.add(new ComplexJoinInferenceRule()); xquery.add(new PushSelectIntoJoinRule()); xquery.add(new IntroJoinInsideSubplanRule()); xquery.add(new PushMapOperatorDownThroughProductRule()); xquery.add(new PushSubplanWithAggregateDownThroughProductRule()); xquery.add(new IntroduceGroupByForSubplanRule()); xquery.add(new SubplanOutOfGroupRule()); xquery.add(new InsertOuterJoinRule()); xquery.add(new ExtractFunctionsFromJoinConditionRule()); xquery.add(new RemoveRedundantVariablesRule()); xquery.add(new RemoveUnusedAssignAndAggregateRule()); xquery.add(new FactorRedundantGroupAndDecorVarsRule()); xquery.add(new EliminateSubplanRule()); xquery.add(new EliminateGroupByEmptyKeyRule()); xquery.add(new PushSubplanIntoGroupByRule()); xquery.add(new NestedSubplanToJoinRule()); xquery.add(new EliminateSubplanWithInputCardinalityOneRule()); return xquery; }
Mutable<ILogicalOperator> op2Ref = op1.getInputs().get(0); AbstractLogicalOperator op2 = (AbstractLogicalOperator) op2Ref.getValue(); if (op2.getOperatorTag() != LogicalOperatorTag.SELECT && descOrSelfIsScanOrJoin(op2)) { Set<LogicalVariable> free2 = new HashSet<LogicalVariable>(); OperatorPropertiesUtil.getFreeVariablesInSelfOrDesc(op2, free2);
condPushDownAndJoinInference.add(new DisjunctivePredicateToJoinRule()); condPushDownAndJoinInference.add(new PushSelectIntoJoinRule()); condPushDownAndJoinInference.add(new IntroJoinInsideSubplanRule());