Package org.apache.jena.sparql.core

Class GraphView

java.lang.Object

org.apache.jena.graph.impl.GraphBase

org.apache.jena.sparql.core.GraphView

All Implemented Interfaces:

org.apache.jena.atlas.lib.Sync, Graph, GraphWithPerform, NamedGraph

Direct Known Subclasses:

GraphInMemory

public class GraphView
extends GraphBase
implements NamedGraph, org.apache.jena.atlas.lib.Sync

Implement a Graph as a view of the DatasetGraph. It maps graph operations to quad operations. GraphUnionRead provides a union graph that does not assume quads, but loops on graphs.

See Also:

GraphUnionRead

Field Summary

Fields inherited from class org.apache.jena.graph.impl.GraphBase

TOSTRING_TRIPLE_BASE, TOSTRING_TRIPLE_LIMIT

Fields inherited from interface org.apache.jena.graph.Graph

emptyGraph

Method Summary

Modifier and Type	Method	Description
void	clear()
static GraphView	createDefaultGraph(DatasetGraph dsg)
static GraphView	createNamedGraph(DatasetGraph dsg, Node graphIRI)
static GraphView	createUnionGraph(DatasetGraph dsg)
Capabilities	getCapabilities()
DatasetGraph	getDataset()	Return the DatasetGraph we are viewing.
Node	getGraphName()	Return the graph name for this graph in the dataset it is a view of.
TransactionHandler	getTransactionHandler()
void	performAdd(Triple t)
void	performDelete(Triple t)
void	remove(Node s, Node p, Node o)
void	sync()

Methods inherited from class org.apache.jena.graph.impl.GraphBase

add, close, contains, contains, delete, dependsOn, find, find, forTestingOnly_graphBaseFind, getEventManager, getPrefixMapping, isClosed, isEmpty, isIsomorphicWith, notifyAdd, notifyDelete, size, toString, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.jena.graph.Graph

add, add, close, contains, contains, delete, delete, dependsOn, find, find, find, getEventManager, getPrefixMapping, isClosed, isEmpty, isIsomorphicWith, size, stream, stream

Method Detail

createDefaultGraph

public static GraphView createDefaultGraph(DatasetGraph dsg)

createNamedGraph

public static GraphView createNamedGraph(DatasetGraph dsg,
                                         Node graphIRI)

createUnionGraph

public static GraphView createUnionGraph(DatasetGraph dsg)

getGraphName

public Node getGraphName()

Return the graph name for this graph in the dataset it is a view of. Returns null for the default graph.

Specified by:

getGraphName in interface NamedGraph

getDataset

public DatasetGraph getDataset()

Return the DatasetGraph we are viewing.

performAdd

public void performAdd(Triple t)

Specified by:

performAdd in interface GraphWithPerform

Overrides:

performAdd in class GraphBase

performDelete

public void performDelete(Triple t)

Specified by:

performDelete in interface GraphWithPerform

Overrides:

performDelete in class GraphBase

remove

public void remove(Node s,
                   Node p,
                   Node o)

Specified by:

remove in interface Graph

Overrides:

remove in class GraphBase

clear

public void clear()

Specified by:

clear in interface Graph

Overrides:

clear in class GraphBase

sync

public void sync()

Specified by:

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

getTransactionHandler

public TransactionHandler getTransactionHandler()

Specified by:

getTransactionHandler in interface Graph

Overrides:

getTransactionHandler in class GraphBase

getCapabilities

public Capabilities getCapabilities()

Specified by:

getCapabilities in interface Graph

Overrides:

getCapabilities in class GraphBase