io.konig.core.impl

Class MemoryGraph

java.lang.Object

io.konig.core.impl.MemoryGraph

All Implemented Interfaces:

Graph, LocalNameService, Transaction, Iterable<Edge>, Collection<Edge>, Set<Edge>

public class MemoryGraph
extends Object
implements Graph, Transaction

An in-memory Graph

Author:

Greg

Nested Class Summary

Nested classes/interfaces inherited from interface io.konig.core.Transaction

Transaction.Status

Constructor Summary

Constructors

Constructor and Description
MemoryGraph()
MemoryGraph(Collection<Edge> source)
MemoryGraph(NamespaceManager nsManager)

Method Summary

Modifier and Type	Method and Description
boolean	add(Edge edge)
boolean	add(org.openrdf.model.Statement statement)
void	add(Vertex vertex) Add all the outgoing statements from the given vertex.
boolean	addAll(Collection<? extends Edge> sequence)
void	addWorker(TransactionWorker worker)
List<Edge>	asList() Get the list of edges added to the graph in the current transaction
GraphBuilder	builder()
void	clear()
void	commit() Commit the currently open transaction
boolean	contains(Object obj)
boolean	contains(org.openrdf.model.Resource subject, org.openrdf.model.URI predicate, org.openrdf.model.Value object)
boolean	containsAll(Collection<?> collection)
Edge	edge(Edge edge)
Edge	edge(org.openrdf.model.Resource subject, org.openrdf.model.URI predicate, List<? extends org.openrdf.model.Value> list)
Edge	edge(org.openrdf.model.Resource subject, org.openrdf.model.URI predicate, org.openrdf.model.Value object) Add an edge to this Graph.
Edge	edge(org.openrdf.model.Resource subject, org.openrdf.model.URI predicate, org.openrdf.model.Value object, org.openrdf.model.Resource context)
Edge	edge(Vertex subject, org.openrdf.model.URI predicate, Vertex object)
org.openrdf.model.Resource	getId() Get the identifier this Graph as a named graph.
NamespaceManager	getNamespaceManager()
Transaction.Status	getStatus() Check whether a transaction is open
Vertex	getVertex(org.openrdf.model.Resource id) Get the Vertex with the specified id.
Vertex	getVertex(String id) A convenience method that gets the Vertex with the specified id.
boolean	isCopyEdgeAttributes()
boolean	isEmpty()
Iterator<Edge>	iterator()
Set<org.openrdf.model.URI>	lookupLocalName(String localName) Compute the set of all URI values in this graph which have a given local name
Vertex	mappedBNode(org.openrdf.model.BNode bnode) Obtain the Vertex that is mapped to a given BNode in the current transaction.
void	open() Open a transaction.
void	remove(Edge edge) Remove the specified edge from this graph
boolean	remove(Object obj)
void	remove(org.openrdf.model.Resource resource) Remove a resource from this graph.
void	remove(Vertex v) Remove a vertex from this graph.
boolean	removeAll(Collection<?> collection)
void	removeWorker(TransactionWorker worker)
boolean	retainAll(Collection<?> arg0)
void	rollback()
void	setCopyEdgeAttributes(boolean copyEdgeAttributes)
void	setId(org.openrdf.model.Resource id) Set the identifier for this Graph as a named graph.
void	setNamespaceManager(NamespaceManager nsManager)
int	size()
Object[]	toArray()
<T> T[]	toArray(T[] arg0)
String	toString()
Transaction	tx() Get the Transactional view of this Graph.
Traversal	v(org.openrdf.model.Resource subject) Return a traversal for the specified subject.
Vertex	vertex() A convenience method that creates a new Vertex with a BNode identifier.
Vertex	vertex(org.openrdf.model.Resource id) Create or get a Vertex with the specified id.
Vertex	vertex(String id) A convenience method that gets or creates a Vertex from a string IRI identifier.
Collection<Vertex>	vertices() Returns the set of vertices in this Graph

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Set

equals, hashCode, spliterator

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Constructor Detail

MemoryGraph

public MemoryGraph()

MemoryGraph

public MemoryGraph(Collection<Edge> source)

MemoryGraph

public MemoryGraph(NamespaceManager nsManager)

Method Detail

isCopyEdgeAttributes

public boolean isCopyEdgeAttributes()

setCopyEdgeAttributes

public void setCopyEdgeAttributes(boolean copyEdgeAttributes)

vertex

public Vertex vertex(org.openrdf.model.Resource id)

Description copied from interface: Graph

Create or get a Vertex with the specified id.

Specified by:

vertex in interface Graph

Parameters:

id - The identifier for the Vertex.

Returns:

The Vertex with the specified id. If no such vertex exists in this Graph, it will be created.

getVertex

public Vertex getVertex(org.openrdf.model.Resource id)

Description copied from interface: Graph

Get the Vertex with the specified id.

Specified by:

getVertex in interface Graph

Parameters:

id - The identifier for the Vertex that is to be returned

Returns:

The Vertex with the specified id, or null if no such Vertex exists in this Graph.

vertex

public Vertex vertex(String id)

Description copied from interface: Graph

A convenience method that gets or creates a Vertex from a string IRI identifier.

Specified by:

vertex in interface Graph

Parameters:

id - The IRI for the vertex that is to be returned.

Returns:

The Vertex with the specified IRI. If no such vertex exists in this Graph, it will be created.

getVertex

public Vertex getVertex(String id)

Description copied from interface: Graph

A convenience method that gets the Vertex with the specified id.

Specified by:

getVertex in interface Graph

Parameters:

id - The identifier for the Vertex that is to be returned

Returns:

The Vertex with the specified id, or null if no such Vertex exists in this Graph.

edge

public Edge edge(org.openrdf.model.Resource subject,
                 org.openrdf.model.URI predicate,
                 org.openrdf.model.Value object)

Description copied from interface: Graph

Add an edge to this Graph.

Specified by:

edge in interface Graph

Parameters:

subject - The subject in the statement expressed by the edge.

predicate - The predicate in the statement expressed by the edge

object - The value in the statement expressed by the edge.

Returns:

The edge that was added to this Graph

edge

public Edge edge(org.openrdf.model.Resource subject,
                 org.openrdf.model.URI predicate,
                 org.openrdf.model.Value object,
                 org.openrdf.model.Resource context)

Specified by:

edge in interface Graph

edge

public Edge edge(Vertex subject,
                 org.openrdf.model.URI predicate,
                 Vertex object)

Specified by:

edge in interface Graph

vertices

public Collection<Vertex> vertices()

Description copied from interface: Graph

Returns the set of vertices in this Graph

Specified by:

vertices in interface Graph

v

public Traversal v(org.openrdf.model.Resource subject)

Description copied from interface: Graph

Return a traversal for the specified subject. A vertex for this subject will be added to the graph as a side-effect if it does not already exist.

Specified by:

v in interface Graph

Returns:

tx

public Transaction tx()

Description copied from interface: Graph

Get the Transactional view of this Graph.

Specified by:

tx in interface Graph

Returns:

The Transactional view of this Graph, or null if the Graph is not transactional

open

public void open()

Description copied from interface: Transaction

Open a transaction.

Specified by:

open in interface Transaction

getStatus

public Transaction.Status getStatus()

Description copied from interface: Transaction

Check whether a transaction is open

Specified by:

getStatus in interface Transaction

Returns:

True if a transaction is open and false otherwise.

commit

public void commit()

Description copied from interface: Transaction

Commit the currently open transaction

Specified by:

commit in interface Transaction

rollback

public void rollback()

Specified by:

rollback in interface Transaction

asList

public List<Edge> asList()

Description copied from interface: Transaction

Get the list of edges added to the graph in the current transaction

Specified by:

asList in interface Transaction

Returns:

The list of edges added to the graph in the current transaction, or null if no transaction is open.

addWorker

public void addWorker(TransactionWorker worker)

Specified by:

addWorker in interface Transaction

removeWorker

public void removeWorker(TransactionWorker worker)

Specified by:

removeWorker in interface Transaction

edge

public Edge edge(Edge edge)

Specified by:

edge in interface Graph

remove

public void remove(Edge edge)

Description copied from interface: Graph

Remove the specified edge from this graph

Specified by:

remove in interface Graph

Parameters:

edge - The edge to be removed.

add

public void add(Vertex vertex)

Description copied from interface: Graph

Add all the outgoing statements from the given vertex. If the object of any outgoing statement is a BNode, then recursively add its outgoing statements also.

Specified by:

add in interface Graph

Parameters:

vertex - The vertex whose outgoing statements will be added to this graph.

toString

public String toString()

Overrides:

toString in class Object

getId

public org.openrdf.model.Resource getId()

Description copied from interface: Graph

Get the identifier this Graph as a named graph.

Specified by:

getId in interface Graph

Returns:

The identifier for this Graph or null if it has no identifier.

setId

public void setId(org.openrdf.model.Resource id)

Description copied from interface: Graph

Set the identifier for this Graph as a named graph.

Specified by:

setId in interface Graph

Parameters:

id - The identifier for this Graph

vertex

public Vertex vertex()

Description copied from interface: Graph

A convenience method that creates a new Vertex with a BNode identifier.

Specified by:

vertex in interface Graph

Returns:

The newly created Vertex with a BNode identifier.

builder

public GraphBuilder builder()

Specified by:

builder in interface Graph

add

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

add

public boolean add(Edge edge)

Specified by:

add in interface Collection<Edge>

Specified by:

add in interface Set<Edge>

addAll

public boolean addAll(Collection<? extends Edge> sequence)

Specified by:

addAll in interface Collection<Edge>

Specified by:

addAll in interface Set<Edge>

clear

public void clear()

Specified by:

clear in interface Collection<Edge>

Specified by:

clear in interface Set<Edge>

contains

public boolean contains(Object obj)

Specified by:

contains in interface Collection<Edge>

Specified by:

contains in interface Set<Edge>

containsAll

public boolean containsAll(Collection<?> collection)

Specified by:

containsAll in interface Collection<Edge>

Specified by:

containsAll in interface Set<Edge>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<Edge>

Specified by:

isEmpty in interface Set<Edge>

iterator

public Iterator<Edge> iterator()

Specified by:

iterator in interface Iterable<Edge>

Specified by:

iterator in interface Collection<Edge>

Specified by:

iterator in interface Set<Edge>

remove

public boolean remove(Object obj)

Specified by:

remove in interface Collection<Edge>

Specified by:

remove in interface Set<Edge>

removeAll

public boolean removeAll(Collection<?> collection)

Specified by:

removeAll in interface Collection<Edge>

Specified by:

removeAll in interface Set<Edge>

retainAll

public boolean retainAll(Collection<?> arg0)

Specified by:

retainAll in interface Collection<Edge>

Specified by:

retainAll in interface Set<Edge>

size

public int size()

Specified by:

size in interface Collection<Edge>

Specified by:

size in interface Set<Edge>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<Edge>

Specified by:

toArray in interface Set<Edge>

toArray

public <T> T[] toArray(T[] arg0)

Specified by:

toArray in interface Collection<Edge>

Specified by:

toArray in interface Set<Edge>

getNamespaceManager

public NamespaceManager getNamespaceManager()

Specified by:

getNamespaceManager in interface Graph

setNamespaceManager

public void setNamespaceManager(NamespaceManager nsManager)

Specified by:

setNamespaceManager in interface Graph

contains

public boolean contains(org.openrdf.model.Resource subject,
                        org.openrdf.model.URI predicate,
                        org.openrdf.model.Value object)

Specified by:

contains in interface Graph

remove

public void remove(Vertex v)

Description copied from interface: Graph

Remove a vertex from this graph. Removes all statements that include the vertex as a subject or predicate. All BNodes orphaned by this process will also be removed.

Specified by:

remove in interface Graph

Parameters:

v - The vertex to be removed

remove

public void remove(org.openrdf.model.Resource resource)

Description copied from interface: Graph

Remove a resource from this graph. This is a convenience method equivalent to the following snippet:

   Vertex v = graph.getVertex(resource);
   graph.remove(v);
 

Specified by:

remove in interface Graph

lookupLocalName

public Set<org.openrdf.model.URI> lookupLocalName(String localName)

Description copied from interface: Graph

Compute the set of all URI values in this graph which have a given local name

Specified by:

lookupLocalName in interface Graph

Specified by:

lookupLocalName in interface LocalNameService

Parameters:

localName - The local name to be matched

Returns:

The set of all URI values that have the given localName

edge

public Edge edge(org.openrdf.model.Resource subject,
                 org.openrdf.model.URI predicate,
                 List<? extends org.openrdf.model.Value> list)

Specified by:

edge in interface Graph

mappedBNode

public Vertex mappedBNode(org.openrdf.model.BNode bnode)

Description copied from interface: Graph

Obtain the Vertex that is mapped to a given BNode in the current transaction.

Specified by:

mappedBNode in interface Graph