com.bigdata.rdf.sparql.ast.optimizers
Interface IASTOptimizer

All Known Implementing Classes:

AbstractJoinGroupOptimizer, AskOptimizer, ASTAttachJoinFiltersOptimizer, ASTBatchResolveTermsOptimizer, ASTBindingAssigner, ASTBottomUpOptimizer, ASTComplexOptionalOptimizer, ASTConstructOptimizer, ASTDescribeOptimizer, ASTEmptyGroupOptimizer, ASTExistsOptimizer, ASTFlattenUnionsOptimizer, ASTGraphGroupOptimizer, ASTHashJoinOptimizer, ASTJoinOrderByTypeOptimizer, ASTLiftPreFiltersOptimizer, ASTNamedSubqueryOptimizer, ASTOptimizerList, ASTQueryHintOptimizer, ASTRangeConstraintOptimizer, ASTRangeOptimizer, ASTRunFirstRunLastOptimizer, ASTSearchOptimizer, ASTServiceNodeOptimizer, ASTSetValueExpressionsOptimizer, ASTSimpleOptionalOptimizer, ASTSparql11SubqueryOptimizer, ASTStaticJoinOptimizer, ASTSubGroupJoinVarOptimizer, ASTUnionFiltersOptimizer, ASTUnknownTermOptimizer, ASTWildcardProjectionOptimizer, DefaultOptimizerList

public interface IASTOptimizer

Interface for AST rewrites.

Version:

$Id: IASTOptimizer.java 5264 2011-09-28 16:00:59Z thompsonbry $

Author:

Bryan Thompson

Method Summary

IQueryNode

optimize(AST2BOpContext context, IQueryNode queryNode, IBindingSet[] bindingSets) Optimize the AST.

Method Detail

optimize

IQueryNode optimize(AST2BOpContext context,
                    IQueryNode queryNode,
                    IBindingSet[] bindingSets)

Optimize the AST.

Parameters:

context - The evaluation context.

queryNode - The AST (in).

bindingSet - Optional array of zero or more input solutions.

Returns:

The optimized AST.