org.openanzo.glitter.query
Interface CostBasedQueryExecutionPlan

All Superinterfaces:

QueryExecutionPlan

All Known Implementing Classes:

GreedyCostBasedExecutionPlan, SimpleCostExecutionPlan

public interface CostBasedQueryExecutionPlan
extends QueryExecutionPlan

A CostBasedQueryExecutionPlan uses a NodeCostModel to generate an execution plan for the Glitter engine.

Author:

lee

Method Summary

NodeCostModel

getCostModel()

Methods inherited from interface org.openanzo.glitter.query.QueryExecutionPlan

orderNodes

Method Detail

getCostModel

NodeCostModel getCostModel()

Returns:

The NodeCostModel that assigns query execution costs to various nodes in a SPARQL query tree.