com.hp.hpl.jena.sparql.core
Class DatasetGraphMonitor

java.lang.Object
  com.hp.hpl.jena.sparql.core.DatasetGraphWrapper
      com.hp.hpl.jena.sparql.core.DatasetGraphMonitor

All Implemented Interfaces:

DatasetGraph, Closeable, Sync

public class DatasetGraphMonitor
extends DatasetGraphWrapper

Connect a DatasetGraph to a DatasetChanges monitor. Any add or delete to the DatasetGraph is notified to the monitoring object with a QuadAction to indicate the change made.

Constructor Summary

DatasetGraphMonitor(DatasetGraph dsg, DatasetChanges monitor)
Create a DatasetGraph wrapper that monitors the dataset for changes (add or delete quads).

DatasetGraphMonitor(DatasetGraph dsg, DatasetChanges monitor, boolean recordOnlyIfRealChange)
Create a DatasetGraph wrapper that monitors the dataset for changes (add or delete quads).

Method Summary

void	add(Node g, Node s, Node p, Node o) Add a quad
void	add(Quad quad) Add a quad
void	addGraph(Node gn, Graph g) Add the given graph to the dataset.
void	delete(Node g, Node s, Node p, Node o) Delete a quad
void	delete(Quad quad) Delete a quad
void	deleteAny(Node g, Node s, Node p, Node o) Delete any quads matching the pattern
DatasetChanges	getMonitor() Return the monitor
DatasetGraph	monitored() Return the monitored DatasetGraph
void	removeGraph(Node gn) Remove all data associated with the named graph
void	sync()

Methods inherited from class com.hp.hpl.jena.sparql.core.DatasetGraphWrapper

close, contains, contains, containsGraph, find, find, find, findNG, getContext, getDefaultGraph, getGraph, getLock, getWrapped, isEmpty, listGraphNodes, setDefaultGraph, size, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

DatasetGraphMonitor

public DatasetGraphMonitor(DatasetGraph dsg,
                           DatasetChanges monitor)

Create a DatasetGraph wrapper that monitors the dataset for changes (add or delete quads). Use this DatasetGraph for all operations in order to record changes. Note whether additions of deletions cause an actual change to the dataset or not.

Parameters:

dsg - The DatasetGraph to monitor

monitor - The handler for a change

See Also:

DatasetChanges, QuadAction

DatasetGraphMonitor

public DatasetGraphMonitor(DatasetGraph dsg,
                           DatasetChanges monitor,
                           boolean recordOnlyIfRealChange)

Create a DatasetGraph wrapper that monitors the dataset for changes (add or delete quads). Use this DatasetGraph for all operations in order to record changes.

Parameters:

dsg - The DatasetGraph to monitor

monitor - The handler for a change

recordOnlyIfRealChange - If true, check to see if the chnage would have an effect (e.g. add is a new quad). If false, log changes as ADD/DELETE regardless of whether the dataset actually changes.

See Also:

DatasetChanges, QuadAction

Method Detail

getMonitor

public DatasetChanges getMonitor()

Return the monitor

monitored

public DatasetGraph monitored()

Return the monitored DatasetGraph

add

public void add(Quad quad)

Description copied from interface: DatasetGraph

Add a quad

Specified by:

add in interface DatasetGraph

Overrides:

add in class DatasetGraphWrapper

add

public void add(Node g,
                Node s,
                Node p,
                Node o)

Description copied from interface: DatasetGraph

Add a quad

Specified by:

add in interface DatasetGraph

Overrides:

add in class DatasetGraphWrapper

delete

public void delete(Quad quad)

Description copied from interface: DatasetGraph

Delete a quad

Specified by:

delete in interface DatasetGraph

Overrides:

delete in class DatasetGraphWrapper

delete

public void delete(Node g,
                   Node s,
                   Node p,
                   Node o)

Description copied from interface: DatasetGraph

Delete a quad

Specified by:

delete in interface DatasetGraph

Overrides:

delete in class DatasetGraphWrapper

deleteAny

public void deleteAny(Node g,
                      Node s,
                      Node p,
                      Node o)

Description copied from interface: DatasetGraph

Delete any quads matching the pattern

Specified by:

deleteAny in interface DatasetGraph

Overrides:

deleteAny in class DatasetGraphWrapper

addGraph

public void addGraph(Node gn,
                     Graph g)

Description copied from interface: DatasetGraph

Add the given graph to the dataset. Replaces any existing data for the named graph; to add data, get the graph and add triples to it, or add quads to the dataset. Do not assume that the same Java object is returned by DatasetGraph.getGraph(com.hp.hpl.jena.graph.Node)

Specified by:

addGraph in interface DatasetGraph

Overrides:

addGraph in class DatasetGraphWrapper

removeGraph

public void removeGraph(Node gn)

Description copied from interface: DatasetGraph

Remove all data associated with the named graph

Specified by:

removeGraph in interface DatasetGraph

Overrides:

removeGraph in class DatasetGraphWrapper

sync

public void sync()

Specified by:

sync in interface Sync

Overrides:

sync in class DatasetGraphWrapper