Module org.apache.jena.text

Package org.apache.jena.query.text.changes

Class DatasetGraphTextMonitor

java.lang.Object

org.apache.jena.sparql.core.DatasetGraphWrapper

org.apache.jena.query.text.changes.DatasetGraphTextMonitor

All Implemented Interfaces:

org.apache.jena.atlas.lib.Closeable, org.apache.jena.atlas.lib.Sync, DatasetGraph, Transactional

Direct Known Subclasses:

DatasetGraphText

public class DatasetGraphTextMonitor
extends DatasetGraphWrapper

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

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.jena.sparql.core.Transactional

Transactional.Promote

Constructor Summary

Constructors

Constructor	Description
DatasetGraphTextMonitor(DatasetGraph dsg, TextDatasetChanges monitor)	Create a DatasetGraph wrapper that monitors the dataset for changes (add or delete quads).
DatasetGraphTextMonitor(DatasetGraph dsg, TextDatasetChanges monitor, boolean recordOnlyIfRealChange)	Create a DatasetGraph wrapper that monitors the dataset for changes (add or delete quads).

Method Summary

Modifier and Type	Method	Description
void	add(Node g, Node s, Node p, Node o)
void	add(Quad quad)
void	addGraph(Node gn, Graph g)
void	delete(Node g, Node s, Node p, Node o)
void	delete(Quad quad)
void	deleteAny(Node g, Node s, Node p, Node o)
Graph	getDefaultGraph()
Graph	getGraph(Node graphNode)
TextDatasetChanges	getMonitor()	Return the monitor
DatasetGraph	monitored()	Return the monitored DatasetGraph
void	removeGraph(Node gn)
void	sync()

Methods inherited from class org.apache.jena.sparql.core.DatasetGraphWrapper

abort, begin, begin, begin, clear, close, commit, contains, contains, containsGraph, end, find, find, find, findNG, getBase, getBaseForQuery, getContext, getLock, getUnionGraph, getWrapped, isEmpty, isInTransaction, listGraphNodes, prefixes, promote, promote, setDefaultGraph, size, supportsTransactionAbort, supportsTransactions, toString, transactionMode, transactionType, unwrap

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.jena.sparql.core.DatasetGraph

addAll, stream, stream

Methods inherited from interface org.apache.jena.sparql.core.Transactional

calc, calculate, calculateRead, calculateWrite, exec, execute, executeRead, executeWrite

Constructor Details

DatasetGraphTextMonitor

public DatasetGraphTextMonitor(DatasetGraph dsg,
 TextDatasetChanges 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:

• TextDatasetChanges
• TextQuadAction

DatasetGraphTextMonitor

public DatasetGraphTextMonitor(DatasetGraph dsg,
 TextDatasetChanges 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 change 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:

• TextDatasetChanges
• TextQuadAction

Method Details

getMonitor

public TextDatasetChanges getMonitor()

Return the monitor

monitored

public DatasetGraph monitored()

Return the monitored DatasetGraph

add

public void add(Quad quad)

Specified by:

add in interface DatasetGraph

Overrides:

add in class DatasetGraphWrapper

add

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

Specified by:

add in interface DatasetGraph

Overrides:

add in class DatasetGraphWrapper

delete

public void delete(Quad quad)

Specified by:

delete in interface DatasetGraph

Overrides:

delete in class DatasetGraphWrapper

delete

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

Specified by:

delete in interface DatasetGraph

Overrides:

delete in class DatasetGraphWrapper

deleteAny

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

Specified by:

deleteAny in interface DatasetGraph

Overrides:

deleteAny in class DatasetGraphWrapper

addGraph

public void addGraph(Node gn,
 Graph g)

Specified by:

addGraph in interface DatasetGraph

Overrides:

addGraph in class DatasetGraphWrapper

removeGraph

public void removeGraph(Node gn)

Specified by:

removeGraph in interface DatasetGraph

Overrides:

removeGraph in class DatasetGraphWrapper

sync

public void sync()

Specified by:

sync in interface org.apache.jena.atlas.lib.Sync

Overrides:

sync in class DatasetGraphWrapper

getDefaultGraph

public Graph getDefaultGraph()

Specified by:

getDefaultGraph in interface DatasetGraph

Overrides:

getDefaultGraph in class DatasetGraphWrapper

getGraph

public Graph getGraph(Node graphNode)

Specified by:

getGraph in interface DatasetGraph

Overrides:

getGraph in class DatasetGraphWrapper