com.hp.hpl.jena.sparql.engine
Class QueryEngineBase

java.lang.Object
  com.hp.hpl.jena.sparql.engine.QueryEngineBase

All Implemented Interfaces:

OpEval, org.openjena.atlas.lib.Closeable

Direct Known Subclasses:

QueryEngineMain, QueryEngineRef

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

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

Field Summary

static QueryEngineInfo

queryEngineInfo

Method Summary

void	close()
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

Field Detail

queryEngineInfo

public static final QueryEngineInfo queryEngineInfo

Method Detail

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.openjena.atlas.lib.Closeable