com.hp.hpl.jena.sparql.engine.ref

Class QueryEngineRef

java.lang.Object

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

com.hp.hpl.jena.sparql.engine.ref.QueryEngineRef

All Implemented Interfaces:

OpEval, Closeable

Direct Known Subclasses:

QueryEngineRefQuad

public class QueryEngineRef
extends QueryEngineBase

"Reference" query engine - this simply executes the algebra expression as-is using a simple (non-scalable) execution strategy that follows the definition of SPARQL as closely as possible. The referenc query engine does provide the algebra extensions.

Field Summary

Fields inherited from class com.hp.hpl.jena.sparql.engine.QueryEngineBase

queryEngineInfo

Constructor Summary

Constructors

Constructor and Description
QueryEngineRef(Op op, DatasetGraph dataset, Binding input, Context context)
QueryEngineRef(Op op, DatasetGraph dataset, Context context)

Method Summary

Methods

Modifier and Type	Method and Description
QueryIterator	eval(Op op, DatasetGraph dsg, Binding binding, Context context)
static QueryEngineFactory	getFactory()
static void	register()
static void	unregister()

Methods inherited from class com.hp.hpl.jena.sparql.engine.QueryEngineBase

close, evaluate, getOp, getPlan

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryEngineRef

public QueryEngineRef(Op op,
              DatasetGraph dataset,
              Context context)

QueryEngineRef

public QueryEngineRef(Op op,
              DatasetGraph dataset,
              Binding input,
              Context context)

Method Detail

eval

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

getFactory

public static QueryEngineFactory getFactory()

register

public static void register()

unregister

public static void unregister()