com.bigdata.rdf.sparql.ast.optimizers

Interface IASTOptimizer

All Known Implementing Classes:

AbstractJoinGroupOptimizer, AbstractOptimizerTestCase.ASTPropertyPathOptimizerInTest, AskOptimizer, ASTALPServiceOptimizer, ASTAttachJoinFiltersOptimizer, ASTBottomUpOptimizer, ASTCardinalityOptimizer, ASTComplexOptionalOptimizer, ASTConstructOptimizer, ASTDescribeOptimizer, ASTDistinctTermScanOptimizer, ASTEmptyGroupOptimizer, ASTExistsOptimizer, ASTFastRangeCountOptimizer, ASTFilterNormalizationOptimizer, ASTFlattenJoinGroupsOptimizer, ASTFlattenUnionsOptimizer, ASTFulltextSearchOptimizer, ASTGeoSpatialSearchOptimizer, ASTGraphGroupOptimizer, ASTHashJoinOptimizer, ASTJoinGroupOrderOptimizer, ASTJoinOrderByTypeOptimizer, ASTLiftPreFiltersOptimizer, ASTNamedSubqueryOptimizer, ASTOptimizerList, ASTOrderByAggregateFlatteningOptimizer, ASTPropertyPathOptimizer, ASTQueryHintOptimizer, ASTRangeConstraintOptimizer, ASTRangeCountOptimizer, ASTRangeOptimizer, ASTRunFirstRunLastOptimizer, ASTSearchInSearchOptimizer, ASTSearchOptimizer, ASTSearchOptimizerBase, ASTServiceNodeOptimizer, ASTSetValueExpressionsOptimizer, ASTSimpleGroupByAndCountOptimizer, ASTSimpleOptionalOptimizer, ASTSparql11SubqueryOptimizer, ASTStaticBindingsOptimizer, ASTStaticJoinOptimizer, ASTSubGroupJoinVarOptimizer, ASTUnionFiltersOptimizer, ASTUnknownTermOptimizer, ASTWildcardProjectionOptimizer, DefaultOptimizerList

public interface IASTOptimizer

Interface for AST rewrites.

Version:

$Id$

Author:

Bryan Thompson

Method Summary

Methods

Modifier and Type	Method and Description
QueryNodeWithBindingSet	optimize(AST2BOpContext context, QueryNodeWithBindingSet input) Optimize the AST.

Method Detail

optimize

QueryNodeWithBindingSet optimize(AST2BOpContext context,
                               QueryNodeWithBindingSet input)

Optimize the AST.

Parameters:

context - The evaluation context.

input - The input to the optimizer, consisting of a queryNode and input binding set.

Returns:

An instance of type QueryNodeWithBindingSet.