com.hp.hpl.jena.graph.compose
Class Delta

java.lang.Object
  com.hp.hpl.jena.graph.impl.GraphBase
      com.hp.hpl.jena.graph.compose.CompositionBase
          com.hp.hpl.jena.graph.compose.Dyadic
              com.hp.hpl.jena.graph.compose.Delta

All Implemented Interfaces:

Graph, GraphAdd, com.hp.hpl.jena.graph.impl.GraphWithPerform

public class Delta
extends Dyadic
implements Graph

Graph operation for wrapping a base graph and leaving it unchanged while recording all the attempted updates for later access.

TODO review in the light of GraphWrapper

Author:

hedgehog

Field Summary

Fields inherited from interface com.hp.hpl.jena.graph.Graph

emptyGraph

Constructor Summary

Delta(Graph base)

Method Summary

void	close() Close this graph.
Graph	getAdditions() Answer the graph of all triples added
Graph	getDeletions() Answer the graph of all triples removed
ExtendedIterator	graphBaseFind(TripleMatch tm) Find all the base triples matching tm, exclude the ones that are deleted, add the ones that have been added.
int	graphBaseSize() Answer the number of triples in this graph
void	performAdd(Triple t) Add the triple to the graph, ie add it to the additions, remove it from the removals.
void	performDelete(Triple t) Remove the triple, ie, remove it from the adds, add it to the removals.

Methods inherited from class com.hp.hpl.jena.graph.compose.Dyadic

dependsOn, getL, getR, union

Methods inherited from class com.hp.hpl.jena.graph.compose.CompositionBase

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

Methods inherited from class com.hp.hpl.jena.graph.impl.GraphBase

add, contains, contains, delete, find, find, getBulkUpdateHandler, getCapabilities, getEventManager, getPrefixMapping, getReifier, getTransactionHandler, isEmpty, isIsomorphicWith, notifyAdd, notifyDelete, queryHandler, size, toString, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.hp.hpl.jena.graph.Graph

contains, contains, delete, dependsOn, find, find, getBulkUpdateHandler, getCapabilities, getEventManager, getPrefixMapping, getReifier, getTransactionHandler, isEmpty, isIsomorphicWith, queryHandler, size

Methods inherited from interface com.hp.hpl.jena.graph.GraphAdd

add

Constructor Detail

Delta

public Delta(Graph base)

Method Detail

getAdditions

public Graph getAdditions()

Answer the graph of all triples added

getDeletions

public Graph getDeletions()

Answer the graph of all triples removed

performAdd

public void performAdd(Triple t)

Add the triple to the graph, ie add it to the additions, remove it from the removals.

Specified by:

performAdd in interface com.hp.hpl.jena.graph.impl.GraphWithPerform

Overrides:

performAdd in class com.hp.hpl.jena.graph.impl.GraphBase

performDelete

public void performDelete(Triple t)

Remove the triple, ie, remove it from the adds, add it to the removals.

Specified by:

performDelete in interface com.hp.hpl.jena.graph.impl.GraphWithPerform

Overrides:

performDelete in class com.hp.hpl.jena.graph.impl.GraphBase

graphBaseFind

public ExtendedIterator graphBaseFind(TripleMatch tm)

Find all the base triples matching tm, exclude the ones that are deleted, add the ones that have been added.

Specified by:

graphBaseFind in class com.hp.hpl.jena.graph.impl.GraphBase

close

public void close()

Description copied from class: com.hp.hpl.jena.graph.impl.GraphBase

Close this graph. Subgraphs may extend to discard resources.

Specified by:

close in interface Graph

Overrides:

close in class Dyadic

graphBaseSize

public int graphBaseSize()

Description copied from class: CompositionBase

Answer the number of triples in this graph

Overrides:

graphBaseSize in class CompositionBase

Returns:

The integer triple count

See Also:

Graph.size()