org.openanzo.server.repository.query
Class ServerEngineConfig

java.lang.Object
  org.openanzo.glitter.DefaultEngineConfig
      org.openanzo.model.impl.query.CoreEngineConfig
          org.openanzo.server.repository.query.ServerEngineConfig

All Implemented Interfaces:

EngineConfig

public class ServerEngineConfig
extends CoreEngineConfig

ServerEngineConfig is a Glitter Engine config that uses a connection to the relation db in order to do queries.

Author:

Matthew Roy ( mroy@cambridgesemantics.com )

Constructor Summary

ServerEngineConfig()
Create a new ServerEngineConfig

Method Summary

ServerSolutionGeneratorFactory	getSolutionGeneratorFactory()
boolean	substituteFixedBindings() In many cases, an intermediate result set contains solutions that all bind a given variable to the same value.

Methods inherited from class org.openanzo.model.impl.query.CoreEngineConfig

getDatasetClass, getFunctionalPredicates, getQueryExecutionPlan, getQueryValidators, getTreeRewriters, includeInferredTriples, registerFunctionalPredicate, setIncludeInferredTriples

Methods inherited from class org.openanzo.glitter.DefaultEngineConfig

allowNaryUnion

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.openanzo.glitter.EngineConfig

allowNaryUnion

Constructor Detail

ServerEngineConfig

public ServerEngineConfig()

Create a new ServerEngineConfig

Method Detail

getSolutionGeneratorFactory

public ServerSolutionGeneratorFactory getSolutionGeneratorFactory()

Returns:

A SolutionGeneratorFactory that can produce SolutionGenerators for the Glitter engine.

substituteFixedBindings

public boolean substituteFixedBindings()

Description copied from interface: EngineConfig

In many cases, an intermediate result set contains solutions that all bind a given variable to the same value. In most cases, this value can be safely substituted in for the variable anywhere else in the query that the variable appears.

Specified by:

substituteFixedBindings in interface EngineConfig

Overrides:

substituteFixedBindings in class DefaultEngineConfig

Returns:

Whether the engine should aggressively substitute for variables with fixed values.