Examples with RemoveCartesianProductWithEmptyBranchRule org.apache.hyracks.algebricks.rewriter.rules.RemoveCartesianProductWithEmptyBranchRule used on opensource projects

Example 1 with RemoveCartesianProductWithEmptyBranchRule

use of org.apache.hyracks.algebricks.rewriter.rules.RemoveCartesianProductWithEmptyBranchRule in project asterixdb by apache.

the class RuleCollections method buildCondPushDownAndJoinInferenceRuleCollection.

public static final List<IAlgebraicRewriteRule> buildCondPushDownAndJoinInferenceRuleCollection() {
    List<IAlgebraicRewriteRule> condPushDownAndJoinInference = new LinkedList<>();
    condPushDownAndJoinInference.add(new PushSelectDownRule());
    condPushDownAndJoinInference.add(new PushSortDownRule());
    condPushDownAndJoinInference.add(new RemoveRedundantListifyRule());
    condPushDownAndJoinInference.add(new CancelUnnestWithNestedListifyRule());
    condPushDownAndJoinInference.add(new SimpleUnnestToProductRule());
    condPushDownAndJoinInference.add(new ComplexUnnestToProductRule());
    condPushDownAndJoinInference.add(new DisjunctivePredicateToJoinRule());
    condPushDownAndJoinInference.add(new PushSelectIntoJoinRule());
    condPushDownAndJoinInference.add(new IntroJoinInsideSubplanRule());
    // Apply RemoveCartesianProductWithEmptyBranchRule before PushMapOperatorDownThroughProductRule
    // to avoid that a constant assignment gets pushed into an empty branch.
    condPushDownAndJoinInference.add(new RemoveCartesianProductWithEmptyBranchRule());
    condPushDownAndJoinInference.add(new PushMapOperatorDownThroughProductRule());
    condPushDownAndJoinInference.add(new PushSubplanWithAggregateDownThroughProductRule());
    condPushDownAndJoinInference.add(new SubplanOutOfGroupRule());
    condPushDownAndJoinInference.add(new AsterixExtractFunctionsFromJoinConditionRule());
    condPushDownAndJoinInference.add(new RemoveRedundantVariablesRule());
    condPushDownAndJoinInference.add(new AsterixInlineVariablesRule());
    condPushDownAndJoinInference.add(new RemoveUnusedAssignAndAggregateRule());
    condPushDownAndJoinInference.add(new FactorRedundantGroupAndDecorVarsRule());
    condPushDownAndJoinInference.add(new PushAggregateIntoNestedSubplanRule());
    condPushDownAndJoinInference.add(new EliminateSubplanRule());
    condPushDownAndJoinInference.add(new PushProperJoinThroughProduct());
    condPushDownAndJoinInference.add(new PushGroupByThroughProduct());
    condPushDownAndJoinInference.add(new NestGroupByRule());
    condPushDownAndJoinInference.add(new EliminateGroupByEmptyKeyRule());
    condPushDownAndJoinInference.add(new PushSubplanIntoGroupByRule());
    condPushDownAndJoinInference.add(new NestedSubplanToJoinRule());
    condPushDownAndJoinInference.add(new EliminateSubplanWithInputCardinalityOneRule());
    // The following rule should be fired after PushAggregateIntoNestedSubplanRule because
    // pulling invariants out of a subplan will make PushAggregateIntoGroupby harder.
    condPushDownAndJoinInference.add(new AsterixMoveFreeVariableOperatorOutOfSubplanRule());
    return condPushDownAndJoinInference;
}

Example 2 with RemoveCartesianProductWithEmptyBranchRule

use of org.apache.hyracks.algebricks.rewriter.rules.RemoveCartesianProductWithEmptyBranchRule in project asterixdb by apache.

the class RuleCollections method buildPlanCleanupRuleCollection.

public static final List<IAlgebraicRewriteRule> buildPlanCleanupRuleCollection() {
    List<IAlgebraicRewriteRule> planCleanupRules = new LinkedList<>();
    planCleanupRules.add(new SwitchInnerJoinBranchRule());
    planCleanupRules.add(new PushAssignBelowUnionAllRule());
    planCleanupRules.add(new ExtractCommonExpressionsRule());
    planCleanupRules.add(new RemoveRedundantVariablesRule());
    planCleanupRules.add(new PushProjectDownRule());
    planCleanupRules.add(new PushSelectDownRule());
    planCleanupRules.add(new SetClosedRecordConstructorsRule());
    planCleanupRules.add(new IntroduceDynamicTypeCastRule());
    planCleanupRules.add(new IntroduceDynamicTypeCastForExternalFunctionRule());
    planCleanupRules.add(new RemoveUnusedAssignAndAggregateRule());
    planCleanupRules.add(new RemoveCartesianProductWithEmptyBranchRule());
    planCleanupRules.add(new InjectTypeCastForSwitchCaseRule());
    planCleanupRules.add(new InjectTypeCastForUnionRule());
    // Needs to invoke ByNameToByIndexFieldAccessRule as the last logical optimization rule because
    // some rules can push a FieldAccessByName to a place where the name it tries to access is in the closed part.
    // For example, a possible scenario is that a field-access-by-name can be pushed down through UnionAllOperator.
    planCleanupRules.add(new ByNameToByIndexFieldAccessRule());
    return planCleanupRules;
}