Package org.apache.jena.sparql.engine.main

Class QC

java.lang.Object

org.apache.jena.sparql.engine.main.QC

public class QC
extends java.lang.Object

Library of operations related to query execution.

Constructor Summary

Constructors

Constructor	Description
QC()

Method Summary

Modifier and Type	Method	Description
static QueryIterator	execute(Op op, Binding binding, ExecutionContext execCxt)
static QueryIterator	execute(Op op, QueryIterator qIter, ExecutionContext execCxt)
static QueryIterator	execute(QueryIterator input, Triple pattern, ExecutionContext execCxt)	Execute a triple pattern - top level variables only (no variables in RDF-sr embedded triples).
static QueryIterator	executeDirect(BasicPattern pattern, QueryIterator input, ExecutionContext execCxt)	Execute a BGP directly - no optimization.
static OpExecutorFactory	getFactory(Context context)
static void	setFactory(Context context, OpExecutorFactory factory)
static Op	substitute(Op op, Binding binding)

Methods inherited from class java.lang.Object

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

Constructor Detail

QC

public QC()

Method Detail

getFactory

public static OpExecutorFactory getFactory(Context context)

setFactory

public static void setFactory(Context context,
                              OpExecutorFactory factory)

substitute

public static Op substitute(Op op,
                            Binding binding)

execute

public static QueryIterator execute(Op op,
                                    QueryIterator qIter,
                                    ExecutionContext execCxt)

execute

public static QueryIterator execute(Op op,
                                    Binding binding,
                                    ExecutionContext execCxt)

executeDirect

public static QueryIterator executeDirect(BasicPattern pattern,
                                          QueryIterator input,
                                          ExecutionContext execCxt)

Execute a BGP directly - no optimization.

execute

public static QueryIterator execute(QueryIterator input,
                                    Triple pattern,
                                    ExecutionContext execCxt)

Execute a triple pattern - top level variables only (no variables in RDF-sr embedded triples). This is data access to asserted triples.