Package edu.cornell.mannlib.vitro.webapp.rdfservice.impl.logging

Class LoggingRDFService

java.lang.Object

edu.cornell.mannlib.vitro.webapp.rdfservice.impl.logging.LoggingRDFService

All Implemented Interfaces:

RDFService

public class LoggingRDFService
extends Object
implements RDFService

This RDFService wrapper adds instrumentation to the time-consuming methods of the inner RDFService. For the other methods, it just delegates to the inner RDFService.

Nested Class Summary

Nested classes/interfaces inherited from interface edu.cornell.mannlib.vitro.webapp.rdfservice.RDFService

RDFService.ModelSerializationFormat, RDFService.ResultFormat, RDFService.SPARQLQueryType

Method Summary

Modifier and Type	Method	Description
boolean	changeSetUpdate(ChangeSet changeSet)	Performs a series of additions to and or removals from specified graphs in the RDF store.
void	close()	Frees any resources held by this RDFService object The implementation of this method should be idempotent so that multiple invocations do not cause an error.
long	countTriples(org.apache.jena.rdf.model.RDFNode subject, org.apache.jena.rdf.model.RDFNode predicate, org.apache.jena.rdf.model.RDFNode object)
String	getDefaultWriteGraphURI()	Returns the URI of the default write graph
void	getGraphMetadata()	To be determined.
List<String>	getGraphURIs()	Returns a list of all the graph URIs in the RDF store.
org.apache.jena.rdf.model.Model	getTriples(org.apache.jena.rdf.model.RDFNode subject, org.apache.jena.rdf.model.RDFNode predicate, org.apache.jena.rdf.model.RDFNode object, long limit, long offset)
VitroRequest	getVitroRequest()
boolean	isEquivalentGraph(String graphURI, InputStream serializedGraph, RDFService.ModelSerializationFormat serializationFormat)	Tests to see whether the supplied serialization is equivalent to the named graph, as it exists in the store.
boolean	isEquivalentGraph(String graphURI, org.apache.jena.rdf.model.Model graph)	Tests to see whether the supplied serialization is equivalent to the named graph, as it exists in the store.
ChangeSet	manufactureChangeSet()	Creates a ChangeSet object
void	newIndividual(String individualURI, String individualTypeURI)	If the given individual already exists in the default write graph, throws an RDFServiceException, otherwise adds one type assertion to the default write graph.
void	newIndividual(String individualURI, String individualTypeURI, String graphURI)	If the given individual already exists in the given graph, throws an RDFServiceException, otherwise adds one type assertion to the given graph.
boolean	preferPreciseOptionals()
void	registerJenaModelChangedListener(org.apache.jena.rdf.model.ModelChangedListener changeListener)	Registers a Jena listener to listen to changes in any graph in the RDF store.
void	registerListener(ChangeListener changeListener)	Registers a listener to listen to changes in any graph in the RDF store.
void	serializeAll(OutputStream outputStream)	Serializes the union of all named and unnamed graphs in the store to the supplied OutputStream, in N-Quads format.
void	serializeGraph(String graphURI, OutputStream outputStream)	Serializes the contents of the named graph to the supplied OutputStream, in N-Triples format.
void	setVitroRequest(VitroRequest vitroRequest)	UQAM-Bug-Correction Useful among other things to transport the linguistic context in the service
boolean	sparqlAskQuery(String query)	Performs a SPARQL ASK query against the knowledge base.
InputStream	sparqlConstructQuery(String query, RDFService.ModelSerializationFormat resultFormat)	Performs a SPARQL construct query against the knowledge base.
void	sparqlConstructQuery(String query, org.apache.jena.rdf.model.Model model)	Performs a SPARQL construct query against the knowledge base.
InputStream	sparqlDescribeQuery(String query, RDFService.ModelSerializationFormat resultFormat)	Performs a SPARQL describe query against the knowledge base.
InputStream	sparqlSelectQuery(String query, RDFService.ResultFormat resultFormat)	Performs a SPARQL select query against the knowledge base.
void	sparqlSelectQuery(String query, ResultSetConsumer consumer)	Performs a SPARQL select query against the knowledge base.
String	toString()
void	unregisterJenaModelChangedListener(org.apache.jena.rdf.model.ModelChangedListener changeListener)	Unregisters a Jena listener from listening to changes in any graph in the RDF store
void	unregisterListener(ChangeListener changeListener)	Unregisters a listener from listening to changes in any graph in the RDF store

Methods inherited from class java.lang.Object

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

Method Detail

changeSetUpdate

public boolean changeSetUpdate(ChangeSet changeSet)
                        throws RDFServiceException

Description copied from interface: RDFService

Performs a series of additions to and or removals from specified graphs in the RDF store. preConditionSparql is executed against the union of all the graphs in the knowledge base before any updates are made. If the precondition query returns a non-empty result, no updates are made made.

Specified by:

changeSetUpdate in interface RDFService

Parameters:

changeSet - - a set of changes to be performed on the RDF store.

Returns:

boolean - indicates whether the precondition was satisfied

Throws:

RDFServiceException

sparqlConstructQuery

public InputStream sparqlConstructQuery(String query,
                                        RDFService.ModelSerializationFormat resultFormat)
                                 throws RDFServiceException

Description copied from interface: RDFService

Performs a SPARQL construct query against the knowledge base. The query may have an embedded graph identifier. If the query does not contain a graph identifier the query is executed against the union of all named and unnamed graphs in the store.

Specified by:

sparqlConstructQuery in interface RDFService

Parameters:

query - - the SPARQL query to be executed against the RDF store

resultFormat - - type of serialization for RDF result of the SPARQL query

Returns:

InputStream - the result of the query

Throws:

RDFServiceException

sparqlConstructQuery

public void sparqlConstructQuery(String query,
                                 org.apache.jena.rdf.model.Model model)
                          throws RDFServiceException

Description copied from interface: RDFService

Performs a SPARQL construct query against the knowledge base. The query may have an embedded graph identifier. If the query does not contain a graph identifier the query is executed against the union of all named and unnamed graphs in the store.

Specified by:

sparqlConstructQuery in interface RDFService

Parameters:

query - - the SPARQL query to be executed against the RDF store

model - - the Model to add the statements to

Throws:

RDFServiceException

sparqlDescribeQuery

public InputStream sparqlDescribeQuery(String query,
                                       RDFService.ModelSerializationFormat resultFormat)
                                throws RDFServiceException

Description copied from interface: RDFService

Performs a SPARQL describe query against the knowledge base. The query may have an embedded graph identifier. If the query does not contain a graph identifier the query is executed against the union of all named and unnamed graphs in the store.

Specified by:

sparqlDescribeQuery in interface RDFService

Parameters:

query - - the SPARQL query to be executed against the RDF store

resultFormat - - type of serialization for RDF result of the SPARQL query

Returns:

InputStream - the result of the query

Throws:

RDFServiceException

sparqlSelectQuery

public InputStream sparqlSelectQuery(String query,
                                     RDFService.ResultFormat resultFormat)
                              throws RDFServiceException

Description copied from interface: RDFService

Performs a SPARQL select query against the knowledge base. The query may have an embedded graph identifier. If the query does not contain a graph identifier the query is executed against the union of all named and unnamed graphs in the store.

Specified by:

sparqlSelectQuery in interface RDFService

Parameters:

query - - the SPARQL query to be executed against the RDF store

resultFormat - - format for the result of the Select query

Returns:

InputStream - the result of the query

Throws:

RDFServiceException

sparqlSelectQuery

public void sparqlSelectQuery(String query,
                              ResultSetConsumer consumer)
                       throws RDFServiceException

Description copied from interface: RDFService

Performs a SPARQL select query against the knowledge base. The query may have an embedded graph identifier. If the query does not contain a graph identifier the query is executed against the union of all named and unnamed graphs in the store.

Specified by:

sparqlSelectQuery in interface RDFService

Parameters:

query - - the SPARQL query to be executed against the RDF store

consumer - - the class to consume the results of the query

Throws:

RDFServiceException

sparqlAskQuery

public boolean sparqlAskQuery(String query)
                       throws RDFServiceException

Description copied from interface: RDFService

Performs a SPARQL ASK query against the knowledge base. The query may have an embedded graph identifier. If the query does not contain a graph identifier the query is executed against the union of all named and unnamed graphs in the store.

Specified by:

sparqlAskQuery in interface RDFService

Parameters:

query - - the SPARQL ASK query to be executed against the RDF store

Returns:

boolean - the result of the SPARQL ASK query

Throws:

RDFServiceException

serializeAll

public void serializeAll(OutputStream outputStream)
                  throws RDFServiceException

Description copied from interface: RDFService

Serializes the union of all named and unnamed graphs in the store to the supplied OutputStream, in N-Quads format. This method is designed for exporting data from VIVO, so any filters should be bypassed. If possible, this should be done without buffering in memory, so arbitrarily large graphs can be exported.

Specified by:

serializeAll in interface RDFService

Parameters:

outputStream - - receives the serialized result.

Throws:

RDFServiceException

serializeGraph

public void serializeGraph(String graphURI,
                           OutputStream outputStream)
                    throws RDFServiceException

Description copied from interface: RDFService

Serializes the contents of the named graph to the supplied OutputStream, in N-Triples format. This method is designed for exporting data from VIVO, so any filters should be bypassed. If possible, this should be done without buffering in memory, so arbitrarily large graphs can be exported.

Specified by:

serializeGraph in interface RDFService

Parameters:

graphURI - - the URI of the desired graph. May not be null.

outputStream - - receives the serialized result.

Throws:

RDFServiceException

isEquivalentGraph

public boolean isEquivalentGraph(String graphURI,
                                 InputStream serializedGraph,
                                 RDFService.ModelSerializationFormat serializationFormat)
                          throws RDFServiceException

Description copied from interface: RDFService

Tests to see whether the supplied serialization is equivalent to the named graph, as it exists in the store. Equivalence means that if this serialization were written to the store, the resulting graph would be isomorphic to the existing named graph.

Specified by:

isEquivalentGraph in interface RDFService

Parameters:

graphURI - - the URI of the graph to test against. May not be null.

serializedGraph - - the contents to be compared with the existing graph. May not be null.

serializationFormat - - May not be null.

Throws:

RDFServiceException

isEquivalentGraph

public boolean isEquivalentGraph(String graphURI,
                                 org.apache.jena.rdf.model.Model graph)
                          throws RDFServiceException

Description copied from interface: RDFService

Tests to see whether the supplied serialization is equivalent to the named graph, as it exists in the store. Equivalence means that if this serialization were written to the store, the resulting graph would be isomorphic to the existing named graph.

Specified by:

isEquivalentGraph in interface RDFService

Parameters:

graphURI - - the URI of the graph to test against. May not be null.

graph - - the contents to be compared with the existing graph. May not be null.

Throws:

RDFServiceException

newIndividual

public void newIndividual(String individualURI,
                          String individualTypeURI)
                   throws RDFServiceException

Description copied from interface: RDFService

If the given individual already exists in the default write graph, throws an RDFServiceException, otherwise adds one type assertion to the default write graph.

Specified by:

newIndividual in interface RDFService

Parameters:

individualURI - - URI of the individual to be added

individualTypeURI - - URI of the type for the individual

Throws:

RDFServiceException

newIndividual

public void newIndividual(String individualURI,
                          String individualTypeURI,
                          String graphURI)
                   throws RDFServiceException

Description copied from interface: RDFService

If the given individual already exists in the given graph, throws an RDFServiceException, otherwise adds one type assertion to the given graph.

Specified by:

newIndividual in interface RDFService

Parameters:

individualURI - - URI of the individual to be added

individualTypeURI - - URI of the type for the individual

graphURI - - URI of the graph to which to add the individual

Throws:

RDFServiceException

getGraphURIs

public List<String> getGraphURIs()
                          throws RDFServiceException

Description copied from interface: RDFService

Returns a list of all the graph URIs in the RDF store.

Specified by:

getGraphURIs in interface RDFService

Returns:

list of all the named graph URIs in the RDF store. Return an empty list of there no named graphs in the store.

Throws:

RDFServiceException

getGraphMetadata

public void getGraphMetadata()
                      throws RDFServiceException

Description copied from interface: RDFService

To be determined. This is a place holder and is not implemented in current implementations.

Specified by:

getGraphMetadata in interface RDFService

Throws:

RDFServiceException

getDefaultWriteGraphURI

public String getDefaultWriteGraphURI()
                               throws RDFServiceException

Description copied from interface: RDFService

Returns the URI of the default write graph

Specified by:

getDefaultWriteGraphURI in interface RDFService

Returns:

String URI of default write graph. Returns null if no default write graph has been set.

Throws:

RDFServiceException

registerListener

public void registerListener(ChangeListener changeListener)
                      throws RDFServiceException

Description copied from interface: RDFService

Registers a listener to listen to changes in any graph in the RDF store.

Specified by:

registerListener in interface RDFService

Parameters:

changeListener - - the change listener

Throws:

RDFServiceException

unregisterListener

public void unregisterListener(ChangeListener changeListener)
                        throws RDFServiceException

Description copied from interface: RDFService

Unregisters a listener from listening to changes in any graph in the RDF store

Specified by:

unregisterListener in interface RDFService

Parameters:

changeListener - - the change listener

Throws:

RDFServiceException

registerJenaModelChangedListener

public void registerJenaModelChangedListener(org.apache.jena.rdf.model.ModelChangedListener changeListener)
                                      throws RDFServiceException

Description copied from interface: RDFService

Registers a Jena listener to listen to changes in any graph in the RDF store.

Specified by:

registerJenaModelChangedListener in interface RDFService

Parameters:

changeListener - - the change listener

Throws:

RDFServiceException

unregisterJenaModelChangedListener

public void unregisterJenaModelChangedListener(org.apache.jena.rdf.model.ModelChangedListener changeListener)
                                        throws RDFServiceException

Description copied from interface: RDFService

Unregisters a Jena listener from listening to changes in any graph in the RDF store

Specified by:

unregisterJenaModelChangedListener in interface RDFService

Parameters:

changeListener - - the change listener

Throws:

RDFServiceException

manufactureChangeSet

public ChangeSet manufactureChangeSet()

Description copied from interface: RDFService

Creates a ChangeSet object

Specified by:

manufactureChangeSet in interface RDFService

Returns:

ChangeSet an empty ChangeSet object

countTriples

public long countTriples(org.apache.jena.rdf.model.RDFNode subject,
                         org.apache.jena.rdf.model.RDFNode predicate,
                         org.apache.jena.rdf.model.RDFNode object)
                  throws RDFServiceException

Specified by:

countTriples in interface RDFService

Throws:

RDFServiceException

getTriples

public org.apache.jena.rdf.model.Model getTriples(org.apache.jena.rdf.model.RDFNode subject,
                                                  org.apache.jena.rdf.model.RDFNode predicate,
                                                  org.apache.jena.rdf.model.RDFNode object,
                                                  long limit,
                                                  long offset)
                                           throws RDFServiceException

Specified by:

getTriples in interface RDFService

Throws:

RDFServiceException

preferPreciseOptionals

public boolean preferPreciseOptionals()

Specified by:

preferPreciseOptionals in interface RDFService

close

public void close()

Description copied from interface: RDFService

Frees any resources held by this RDFService object The implementation of this method should be idempotent so that multiple invocations do not cause an error.

Specified by:

close in interface RDFService

toString

public String toString()

Overrides:

toString in class Object

setVitroRequest

public void setVitroRequest(VitroRequest vitroRequest)

Description copied from interface: RDFService

UQAM-Bug-Correction Useful among other things to transport the linguistic context in the service

Specified by:

setVitroRequest in interface RDFService

getVitroRequest

public VitroRequest getVitroRequest()

Specified by:

getVitroRequest in interface RDFService