eu.larkc.core.query
Class RemoteSPARQLEndpoint

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

All Implemented Interfaces:

SPARQLEndpoint

public class RemoteSPARQLEndpoint
extends java.lang.Object
implements SPARQLEndpoint

RemoteSPARQLEndpoint class automates the result reading from a specific SPARQL endpoint available on the web.

Author:

vassil

Constructor Summary

RemoteSPARQLEndpoint(org.openrdf.model.URI uri)

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 graph) 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.
java.io.InputStream	sendHTTPGet(SPARQLQuery query)

Methods inherited from class java.lang.Object

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

Constructor Detail

RemoteSPARQLEndpoint

public RemoteSPARQLEndpoint(org.openrdf.model.URI uri)

Method Detail

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 graph)

Description copied from interface: SPARQLEndpoint

Creates a named graph from this endpoint.

Specified by:

createRdfGraph in interface SPARQLEndpoint

Parameters:

graph - is the URI of the named graph

Returns:

named graph

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

sendHTTPGet

public java.io.InputStream sendHTTPGet(SPARQLQuery query)