org.apache.clerezza.rdf.core.sparql

Class SparqlPreParser

java.lang.Object

org.apache.clerezza.rdf.core.sparql.SparqlPreParser

public class SparqlPreParser
extends Object

This class implements an OSGi service to provide a method to obtain referred Graphs in a SPARQL Query or Update.

Author:

hasan

Constructor Summary

Constructors

Constructor and Description
SparqlPreParser()
SparqlPreParser(TcProvider tcProvider)

Method Summary

Methods

Modifier and Type	Method and Description
Set<UriRef>	getReferredGraphs(String queryString, UriRef defaultGraph) This returns the graphs targeted by the queryString.

Methods inherited from class java.lang.Object

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

Constructor Detail

SparqlPreParser

public SparqlPreParser()

SparqlPreParser

public SparqlPreParser(TcProvider tcProvider)

Method Detail

getReferredGraphs

public Set<UriRef> getReferredGraphs(String queryString,
                            UriRef defaultGraph)
                              throws ParseException

This returns the graphs targeted by the queryString. This are the the triple collections explicitely refreded in FROM and FROM NAMED clauses, and if the queryString contains no FROM clause the defaultGraph. For queries that are not limited to specified set of graphs null is returned.

Parameters:

queryString -

defaultGraph -

Returns:

Throws:

ParseException