org.openanzo.model.delta
Class DeltaGraph

java.lang.Object
  org.openanzo.model.proxy.ProxyGraph
      org.openanzo.model.delta.DeltaGraph

All Implemented Interfaces:

INamedGraph, IProxyGraph

public class DeltaGraph
extends ProxyGraph

Graph implementation that keeps track of additions and deletions to a graph inside of a Transaction Queue. Additions and deletions are not applied to the underlying graph until the transaction is commited.

Author:

Matthew Roy ( mroy@cambridgesemantics.com )

Constructor Summary

DeltaGraph(INamedGraph base)
Create a new DeltaGraph on top of the base graph

DeltaGraph(INamedGraph base, java.util.Collection<org.openrdf.model.Statement> additions, java.util.Collection<org.openrdf.model.Statement> deletions)
Create a new DeltaGraph on top of the base graph, and use the supplied additions and deletions in the overlay.

Method Summary

void	add(info.aduna.collections.iterators.CloseableIterator<org.openrdf.model.Statement> statements) Add a set of statements from graph
void	add(org.openrdf.model.Resource subj, org.openrdf.model.URI pred, org.openrdf.model.Value obj) Add a new statement with given subj,pred,obj
void	add(org.openrdf.model.Statement... statements) Add one or more statements to graph
void	delete(info.aduna.collections.iterators.CloseableIterator<org.openrdf.model.Statement> statements) Delete a set of statements from graph
void	delete(org.openrdf.model.Resource subj, org.openrdf.model.URI pred, org.openrdf.model.Value obj) Delete a statement from graph
void	delete(org.openrdf.model.Statement... statements) Delete a set of statements from graph
info.aduna.collections.iterators.CloseableIterator<org.openrdf.model.Statement>	find(org.openrdf.model.Resource subj, org.openrdf.model.URI prop, org.openrdf.model.Value obj) Return an iterator of all statements that match the pattern of subj,prop,obj
INamedGraphEventManager	getEventManager() Return INamedGraphEventManager for this graph
org.openrdf.model.URI	getNamedGraphUri() Get NamedGraph's URI
INamedGraph	getParentGraph() Get the graph to which this proxy is proxing information.
boolean	isClosed() Return if graph is closed
void	setNamedGraphUri(org.openrdf.model.URI namedGraphUri) Set NamedGraph's URI

Methods inherited from class org.openanzo.model.proxy.ProxyGraph

clear, close, contains, contains, getStatements, getTransactionManager, isEmpty, size

Methods inherited from class java.lang.Object

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

Constructor Detail

DeltaGraph

public DeltaGraph(INamedGraph base)

Create a new DeltaGraph on top of the base graph

Parameters:

base - Base graph to overlay deltas

DeltaGraph

public DeltaGraph(INamedGraph base,
                  java.util.Collection<org.openrdf.model.Statement> additions,
                  java.util.Collection<org.openrdf.model.Statement> deletions)

Create a new DeltaGraph on top of the base graph, and use the supplied additions and deletions in the overlay.

Parameters:

base - Base graph to overlay deltas

additions - Addition deltas to overlay

deletions - Deletion deltas to overlay

Method Detail

add

public void add(org.openrdf.model.Resource subj,
                org.openrdf.model.URI pred,
                org.openrdf.model.Value obj)

Description copied from interface: INamedGraph

Add a new statement with given subj,pred,obj

Specified by:

add in interface INamedGraph

Overrides:

add in class ProxyGraph

Parameters:

subj - Subject of statement

pred - Predicate of statement

obj - Object of statement

delete

public void delete(org.openrdf.model.Resource subj,
                   org.openrdf.model.URI pred,
                   org.openrdf.model.Value obj)

Description copied from interface: INamedGraph

Delete a statement from graph

Specified by:

delete in interface INamedGraph

Overrides:

delete in class ProxyGraph

Parameters:

subj - Subject of statement

pred - Predicate of statement

obj - Object of statement

add

public void add(org.openrdf.model.Statement... statements)

Description copied from interface: INamedGraph

Add one or more statements to graph

Specified by:

add in interface INamedGraph

Overrides:

add in class ProxyGraph

Parameters:

statements - statements to add to graph

delete

public void delete(org.openrdf.model.Statement... statements)

Description copied from interface: INamedGraph

Delete a set of statements from graph

Specified by:

delete in interface INamedGraph

Overrides:

delete in class ProxyGraph

Parameters:

statements - statements to delete from graph

delete

public void delete(info.aduna.collections.iterators.CloseableIterator<org.openrdf.model.Statement> statements)

Description copied from interface: INamedGraph

Delete a set of statements from graph

Specified by:

delete in interface INamedGraph

Overrides:

delete in class ProxyGraph

Parameters:

statements - statements to delete from graph

add

public void add(info.aduna.collections.iterators.CloseableIterator<org.openrdf.model.Statement> statements)

Description copied from interface: INamedGraph

Add a set of statements from graph

Specified by:

add in interface INamedGraph

Overrides:

add in class ProxyGraph

Parameters:

statements - statements to delete from graph

find

public info.aduna.collections.iterators.CloseableIterator<org.openrdf.model.Statement> find(org.openrdf.model.Resource subj,
                                                                                            org.openrdf.model.URI prop,
                                                                                            org.openrdf.model.Value obj)

Description copied from interface: INamedGraph

Return an iterator of all statements that match the pattern of subj,prop,obj

Specified by:

find in interface INamedGraph

Overrides:

find in class ProxyGraph

Parameters:

subj - Subject resource to match, or wildcard if null

prop - Predicate uri to match, or wildcard if null

obj - Object value to match, or wildcard if null

Returns:

an iterator of all statements that match the pattern of subj,prop,obj

getParentGraph

public INamedGraph getParentGraph()

Description copied from interface: IProxyGraph

Get the graph to which this proxy is proxing information.

Specified by:

getParentGraph in interface IProxyGraph

Specified by:

getParentGraph in class ProxyGraph

Returns:

parent graph to which this proxy is proxing information

getNamedGraphUri

public org.openrdf.model.URI getNamedGraphUri()

Description copied from interface: INamedGraph

Get NamedGraph's URI

Returns:

URI for this grpah

setNamedGraphUri

public void setNamedGraphUri(org.openrdf.model.URI namedGraphUri)

Description copied from interface: INamedGraph

Set NamedGraph's URI

isClosed

public boolean isClosed()

Description copied from interface: INamedGraph

Return if graph is closed

Returns:

true if graph is closed

getEventManager

public INamedGraphEventManager getEventManager()

Description copied from interface: INamedGraph

Return INamedGraphEventManager for this graph

Specified by:

getEventManager in interface INamedGraph

Overrides:

getEventManager in class ProxyGraph

Returns:

INamedGraphEventManager for this graph