org.openanzo.model.impl
Class ADataset

java.lang.Object
  org.openanzo.model.impl.ADataset

All Implemented Interfaces:

IContainer, IDataset

Direct Known Subclasses:

ClosableDatasetServiceDataset, Dataset

public abstract class ADataset
extends java.lang.Object
implements IDataset

Abstract base implementation of IDataset. Contains 2 sets of URIs, one for the default graphs, and one for the namedGraphs.

Author:

Matthew Roy ( mroy@cambridgesemantics.com )

Constructor Summary

ADataset()

Method Summary

void	add(java.util.Iterator<org.openrdf.model.Statement> statements) Add statements to their given NamedGraph.
void	add(org.openrdf.model.Resource subj, org.openrdf.model.URI pred, org.openrdf.model.Value obj, org.openrdf.model.Resource namedGraphUri) Add a statement to the given NamedGraph if said NamedGraph is contained within this dataset.
void	add(org.openrdf.model.Statement... statements) Add statements to the given NamedGraph if said NamedGraph is contained within this dataset.
void	clear() Delete all statements in container
void	clear(org.openrdf.model.Resource... context) Delete all statements in container for given contexts
void	close() Disconnect container from its source and close the container Note: Once a container is closed, it is based on the source of the container's data whether or not subsequent calls to connect will return the same data
void	connect() Connect container to its source
boolean	contains(org.openrdf.model.Resource subj, org.openrdf.model.URI prop, org.openrdf.model.Value obj, org.openrdf.model.Resource... namedGraphUris) Return true if the container contains atleast 1 statement that matches the pattern of subj,prop,obj,context
boolean	contains(org.openrdf.model.Statement statement) Return true if the container contains atleast 1 statement that matches the statement provided
void	delete(java.util.Iterator<org.openrdf.model.Statement> statements) Delete statements from their given NamedGraph.
void	delete(org.openrdf.model.Resource subj, org.openrdf.model.URI pred, org.openrdf.model.Value obj, org.openrdf.model.Resource namedGraphUri) Delete statements from the given NamedGraph if said NamedGraph is contained within this dataset.
void	delete(org.openrdf.model.Statement... statements) Delete statements from the given NamedGraph if said NamedGraph is contained within this dataset.
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, org.openrdf.model.Resource... namedGraphUris) Return an iterator over all statements that match the pattern of subj,prop,obj
info.aduna.collections.iterators.CloseableIterator<org.openrdf.model.Statement>	findAll(org.openrdf.model.Resource subj, org.openrdf.model.URI prop, org.openrdf.model.Value obj, org.openrdf.model.Resource... namedGraphUris) Return an iterator of all statements that match the pattern of subj,prop,obj Difference between find, and findall, is that with findAll, if contexts are provided, they are used to sort results, but not limit results, ie the results contains all statements that match the subj,prop,obj, with matching statements within the given contexts earlier in the iterator than statements not in the provided contexts.
java.util.Collection<org.openrdf.model.URI>	getContexts() Get the set of Context URIs that are container within this Container
info.aduna.collections.iterators.CloseableIterator<org.openrdf.model.Statement>	getStatements() Get an iterator over all statements within this container
org.openrdf.model.URI	getURI() Get the URI for the dataset
boolean	isClosed() Return if container is closed
boolean	isConnected() Return if the container is connected to its source
boolean	isEmpty() Return if container is empty
boolean	isEmpty(org.openrdf.model.Resource... context) Return if container is empty for given contexts
void	setDatasetURI(org.openrdf.model.URI datasetURI) Set the URI for the dataset
int	size() Return number of statements in container
int	size(org.openrdf.model.Resource... context) Return number of statements in container

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.openanzo.model.IDataset

addDefaultGraphUri, addDefaultNamedGraph, addNamedGraph, addNamedGraphUri, containsDefaultNamedGraph, containsNamedGraph, executeQuery, getDefaulNamedGraphsSize, getDefaultNamedGraph, getDefaultNamedGraphs, getNamedGraph, getNamedGraphs, getNamedGraphsSize, removeDefaultGraphUri, removeNamedGraphUri

Methods inherited from interface org.openanzo.model.IContainer

executeQuery, getEventManager, getTransactionManager, setEventManager, setTransactionManager

Constructor Detail

ADataset

public ADataset()

Method Detail

add

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

Add a statement to the given NamedGraph if said NamedGraph is contained within this dataset. No exception is thrown if NamedGraph is not contained within dataset, statement is simple ignored.

Specified by:

add in interface IContainer

Parameters:

subj - Subject of statement

pred - Property of statement

obj - Object of statement

namedGraphUri - URI of NamedGraph to which statement is to be added

Throws:

AnzoRuntimeException - if any of the 4 arguments is null

add

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

Add statements to the given NamedGraph if said NamedGraph is contained within this dataset. No exception is thrown if NamedGraph is not contained within dataset, statement is simple ignored.

Specified by:

add in interface IContainer

Parameters:

statements - to add

Throws:

AnzoRuntimeException - if any of the 4 arguments is null

add

public void add(java.util.Iterator<org.openrdf.model.Statement> statements)

Add statements to their given NamedGraph. Context of each statement is used to determine which NamedGraph statement is to be added.

Specified by:

add in interface IContainer

Parameters:

statements - Iterator of statement to add

delete

public void delete(java.util.Iterator<org.openrdf.model.Statement> statements)

Delete statements from their given NamedGraph. Context of each statement is used to determine which NamedGraph statement is to be removed.

Specified by:

delete in interface IContainer

Parameters:

statements - Iterator of statement to delete

delete

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

Delete statements from the given NamedGraph if said NamedGraph is contained within this dataset. No exception is thrown if NamedGraph is not contained within dataset, statement is simple ignored.

Specified by:

delete in interface IContainer

Parameters:

subj - Subject of statement

pred - Property of statement

obj - Object of statement

namedGraphUri - URI of NamedGraph to which statement is to be deleted

Throws:

AnzoRuntimeException - if any of the 4 arguments is null

delete

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

Delete statements from the given NamedGraph if said NamedGraph is contained within this dataset. No exception is thrown if NamedGraph is not contained within dataset, statement is simple ignored.

Specified by:

delete in interface IContainer

Parameters:

statements - statements to remove

Throws:

AnzoRuntimeException - if any of the 4 arguments is null

clear

public void clear()

Description copied from interface: IContainer

Delete all statements in container

Specified by:

clear in interface IContainer

contains

public boolean contains(org.openrdf.model.Resource subj,
                        org.openrdf.model.URI prop,
                        org.openrdf.model.Value obj,
                        org.openrdf.model.Resource... namedGraphUris)

Description copied from interface: IContainer

Return true if the container contains atleast 1 statement that matches the pattern of subj,prop,obj,context

Specified by:

contains in interface IContainer

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

namedGraphUris - Context values to match, or wildcard if null

Returns:

true if the container contains atleast 1 statement that matches the pattern of subj,prop,obj

contains

public boolean contains(org.openrdf.model.Statement statement)

Description copied from interface: IContainer

Return true if the container contains atleast 1 statement that matches the statement provided

Specified by:

contains in interface IContainer

Parameters:

statement - Statement to check for existence in container

Returns:

true if the container contains atleast 1 statement that matches the statement provided

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,
                                                                                            org.openrdf.model.Resource... namedGraphUris)

Description copied from interface: IContainer

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

Specified by:

find in interface IContainer

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

namedGraphUris - Context values to match, or wildcard if null

Returns:

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

findAll

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

Description copied from interface: IDataset

Return an iterator of all statements that match the pattern of subj,prop,obj Difference between find, and findall, is that with findAll, if contexts are provided, they are used to sort results, but not limit results, ie the results contains all statements that match the subj,prop,obj, with matching statements within the given contexts earlier in the iterator than statements not in the provided contexts.

Specified by:

findAll in interface IDataset

Parameters:

subj - Subject resource to match, or null for any

prop - Predicate uri to match, or null for any

obj - Object value to match, or null for any

namedGraphUris - Set of contexts to search first, before searching the rest of the dataset

Returns:

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

getStatements

public info.aduna.collections.iterators.CloseableIterator<org.openrdf.model.Statement> getStatements()

Description copied from interface: IContainer

Get an iterator over all statements within this container

Specified by:

getStatements in interface IContainer

Returns:

CloseableIterator of all statements within this container

isClosed

public boolean isClosed()

Description copied from interface: IContainer

Return if container is closed

Specified by:

isClosed in interface IContainer

Returns:

true if container is closed

size

public int size()

Description copied from interface: IContainer

Return number of statements in container

Specified by:

size in interface IContainer

Returns:

number of statements in container

getURI

public org.openrdf.model.URI getURI()

Get the URI for the dataset

Specified by:

getURI in interface IContainer

Returns:

the dataset's URI

setDatasetURI

public void setDatasetURI(org.openrdf.model.URI datasetURI)

Set the URI for the dataset

Parameters:

datasetURI - the value to set dataset's URI

clear

public void clear(org.openrdf.model.Resource... context)

Description copied from interface: IContainer

Delete all statements in container for given contexts

Specified by:

clear in interface IContainer

Parameters:

context - Contexts to clear from container

close

public void close()

Description copied from interface: IContainer

Disconnect container from its source and close the container Note: Once a container is closed, it is based on the source of the container's data whether or not subsequent calls to connect will return the same data

Specified by:

close in interface IContainer

connect

public void connect()

Description copied from interface: IContainer

Connect container to its source

Specified by:

connect in interface IContainer

isConnected

public boolean isConnected()

Description copied from interface: IContainer

Return if the container is connected to its source

Specified by:

isConnected in interface IContainer

Returns:

if the container is connected to its source

isEmpty

public boolean isEmpty()

Description copied from interface: IContainer

Return if container is empty

Specified by:

isEmpty in interface IContainer

Returns:

true if container is empty

isEmpty

public boolean isEmpty(org.openrdf.model.Resource... context)

Description copied from interface: IContainer

Return if container is empty for given contexts

Specified by:

isEmpty in interface IContainer

Parameters:

context - Contexts of statements to count

Returns:

true if container is empty

size

public int size(org.openrdf.model.Resource... context)

Description copied from interface: IContainer

Return number of statements in container

Specified by:

size in interface IContainer

Parameters:

context - Contexts of statements to count

Returns:

number of statements in container for given contexts

getContexts

public java.util.Collection<org.openrdf.model.URI> getContexts()

Description copied from interface: IContainer

Get the set of Context URIs that are container within this Container

Specified by:

getContexts in interface IContainer

Returns:

the set of Context URIs that are container within this Container