Module org.apache.jena.core

Package org.apache.jena.graph.compose

Class Union

java.lang.Object

org.apache.jena.graph.impl.GraphBase

org.apache.jena.graph.compose.CompositionBase

org.apache.jena.graph.compose.Dyadic

org.apache.jena.graph.compose.Union

All Implemented Interfaces:

Graph, GraphWithPerform

public class Union
extends Dyadic
implements Graph

A class representing the dynamic union of two graphs. Addition only affects the left operand, deletion affects both.

See Also:

• MultiUnion

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

Constructor Summary

Constructors

Constructor	Description
Union(Graph L, Graph R)

Method Summary

Modifier and Type	Method	Description
boolean	graphBaseContains(Triple t)
void	performAdd(Triple t)	To add a triple to the union, add it to the left operand; this is asymmetric.
void	performDelete(Triple t)	To remove a triple, remove it from both operands.

Methods inherited from class org.apache.jena.graph.compose.Dyadic

close, dependsOn, getL, getR, union

Methods inherited from class org.apache.jena.graph.compose.CompositionBase

butNot, ifIn, ifIn, recording, reject, rejecting, rejecting

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

add, clear, contains, contains, delete, find, find, forTestingOnly_graphBaseFind, getEventManager, getPrefixMapping, getTransactionHandler, isClosed, isEmpty, isIsomorphicWith, notifyAdd, notifyDelete, remove, 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, clear, close, contains, contains, delete, delete, dependsOn, find, find, find, getCapabilities, getEventManager, getPrefixMapping, getTransactionHandler, isClosed, isEmpty, isIsomorphicWith, remove, size, sizeLong, stream, stream

Constructor Details

Union

public Union(Graph L,
 Graph R)

Method Details

performAdd

public void performAdd(Triple t)

To add a triple to the union, add it to the left operand; this is asymmetric.

Specified by:

performAdd in interface GraphWithPerform

Overrides:

performAdd in class GraphBase

performDelete

public void performDelete(Triple t)

To remove a triple, remove it from both operands.

Specified by:

performDelete in interface GraphWithPerform

Overrides:

performDelete in class GraphBase

graphBaseContains

public boolean graphBaseContains(Triple t)