eu.larkc.core.query
Class LocalStoreSPARQLService

java.lang.Object
  eu.larkc.core.query.LocalStoreSPARQLService

All Implemented Interfaces:

SPARQLEndpoint

Direct Known Subclasses:

RdfStoreConnectionImpl

public class LocalStoreSPARQLService
extends java.lang.Object
implements SPARQLEndpoint

LocalStoreSPARQLService class implements SPARQL query evaluation over a local memory RDF Store.

Author:

vassil

Constructor Summary

LocalStoreSPARQLService(com.ontotext.ordi.tripleset.TConnection con)

Method Summary

DataSet	createDataSet(java.util.Collection<org.openrdf.model.URI> defaultGraphs, java.util.Collection<org.openrdf.model.URI> namedGraphs) Creates a SPARQL dataset from this endpoint.
RdfGraph	createRdfGraph(org.openrdf.model.URI name) Creates a named graph from this endpoint.
boolean	executeAsk(SPARQLQuery query) Executes ASK query.
SetOfStatements	executeConstruct(SPARQLQuery query) Executes CONSTRUCT or DESCRIBE query.
VariableBinding	executeSelect(SPARQLQuery query) Executes SELECT query.

Methods inherited from class java.lang.Object

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

Constructor Detail

LocalStoreSPARQLService

public LocalStoreSPARQLService(com.ontotext.ordi.tripleset.TConnection con)

Method Detail

executeAsk

public boolean executeAsk(SPARQLQuery query)

Description copied from interface: SPARQLEndpoint

Executes ASK query. If the submitted query is not ASK a runtime exception will be generated.

Specified by:

executeAsk in interface SPARQLEndpoint

Parameters:

query - is ask query to be executed

Returns:

true or false

executeConstruct

public SetOfStatements executeConstruct(SPARQLQuery query)

Description copied from interface: SPARQLEndpoint

Executes CONSTRUCT or DESCRIBE query. If the submitted query is not CONSTRUCT or DESCRIBE a runtime exception will be generated.

Specified by:

executeConstruct in interface SPARQLEndpoint

Parameters:

query - is construct or describe query to be executed

Returns:

set of rdf statements

executeSelect

public VariableBinding executeSelect(SPARQLQuery query)

Description copied from interface: SPARQLEndpoint

Executes SELECT query. If the submitted query is not SELECT a runtime exception will be generated.

Specified by:

executeSelect in interface SPARQLEndpoint

Parameters:

query - is select query to be executed

Returns:

list of solutions

createDataSet

public DataSet createDataSet(java.util.Collection<org.openrdf.model.URI> defaultGraphs,
                             java.util.Collection<org.openrdf.model.URI> namedGraphs)

Description copied from interface: SPARQLEndpoint

Creates a SPARQL dataset from this endpoint.

Specified by:

createDataSet in interface SPARQLEndpoint

Parameters:

defaultGraphs - is list of default graphs

namedGraphs - is a list of named graphs

Returns:

dataset

createRdfGraph

public RdfGraph createRdfGraph(org.openrdf.model.URI name)

Description copied from interface: SPARQLEndpoint

Creates a named graph from this endpoint.

Specified by:

createRdfGraph in interface SPARQLEndpoint

Parameters:

name - is the URI of the named graph

Returns:

named graph