Module org.apache.jena.arq

Package org.apache.jena.sparql.engine

Class QueryEngineBase

java.lang.Object

org.apache.jena.sparql.engine.QueryEngineBase

All Implemented Interfaces:

org.apache.jena.atlas.lib.Closeable, OpEval

Direct Known Subclasses:

QueryEngineMain, QueryEngineRef

public abstract class QueryEngineBase
extends Object
implements OpEval, org.apache.jena.atlas.lib.Closeable

Main part of a QueryEngine - something that takes responsibility for a complete query execution

Method Summary

Modifier and Type	Method	Description
void	close()
final QueryIterator	evaluate(Op op, DatasetGraph dsg, Binding binding, Context context)
Op	getOp()	Algebra expression (including any optimization)
Plan	getPlan()

Methods inherited from class java.lang.Object

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

Method Details

getPlan

public Plan getPlan()

evaluate

public final QueryIterator evaluate(Op op,
 DatasetGraph dsg,
 Binding binding,
 Context context)

Specified by:

evaluate in interface OpEval

getOp

public Op getOp()

Algebra expression (including any optimization)

close

public void close()

Specified by:

close in interface org.apache.jena.atlas.lib.Closeable