Module org.apache.jena.arq

Package org.apache.jena.sparql.graph

Class GraphFactory

java.lang.Object

org.apache.jena.sparql.graph.GraphFactory

public class GraphFactory
extends Object

Ways to make graphs and models

Constructor Summary

Constructors

Constructor	Description
GraphFactory()

Method Summary

Modifier and Type	Method	Description
static Graph	createDefaultGraph()	Create a graph - ARQ-wide default type
static Graph	createGraphMem()	Create a graph that is a Jena memory graph.
static Graph	createJenaDefaultGraph()	Create a graph - always the Jena default graph type
static Graph	createPlainGraph()	Graph that uses same-term for find() and contains().
static GraphTxn	createTxnGraph()	Create an in-memory, thread-safe, transactional graph.
static Model	makeDefaultModel()	Create a model over a default graph (ARQ-wide for default graph type)
static Model	makeJenaDefaultModel()	Guaranteed call-through to Jena's ModelFactory operation
static Model	makePlainModel()	Create a model over a plain graph (small-scale use only)
static Graph	sinkGraph()

Methods inherited from class java.lang.Object

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

Constructor Details

GraphFactory

public GraphFactory()

Method Details

createGraphMem

public static Graph createGraphMem()

Create a graph that is a Jena memory graph. The created graph is not thread safe. Inappropriate use of graph iterators and streams may cause ConcurrentModificationException.

See Also:

• createDefaultGraph()

createTxnGraph

public static GraphTxn createTxnGraph()

Create an in-memory, thread-safe, transactional graph.

This fully supports transactions, including abort to roll-back changes. It provides "autocommit" if operations are performed outside a transaction. The implementation adds a begin/commit around each add or delete so overheads can accumulate).

createDefaultGraph

public static Graph createDefaultGraph()

Create a graph - ARQ-wide default type

createJenaDefaultGraph

public static Graph createJenaDefaultGraph()

Create a graph - always the Jena default graph type

createPlainGraph

public static Graph createPlainGraph()

Graph that uses same-term for find() and contains().

sinkGraph

public static Graph sinkGraph()

makeJenaDefaultModel

public static Model makeJenaDefaultModel()

Guaranteed call-through to Jena's ModelFactory operation

makeDefaultModel

public static Model makeDefaultModel()

Create a model over a default graph (ARQ-wide for default graph type)

makePlainModel

public static Model makePlainModel()

Create a model over a plain graph (small-scale use only)