org.dftproject.genesis.core.data
Class DataResourceNode

java.lang.Object
  org.dftproject.genesis.core.data.DataResourceNode

All Implemented Interfaces:

INode, IResourceNode

public class DataResourceNode
extends java.lang.Object
implements IResourceNode

DataResourceNode is a database-backed resource node.

Constructor Summary

protected

DataResourceNode(java.lang.String uri, DataView view) Creates a database-back resource node.

Method Summary

void	addObject(IResourceNode predicate, INode object, IResourceNode graph) Adds a statement wherein this node is the subject.
void	addObject(IResourceNode predicate, INode object, IResourceNode graph, DataConnection conn) Adds a statement wherein this node is the subject using the given connection.
boolean	equals(java.lang.Object obj)
INode	getFirstObject(IResourceNode predicate) Returns the first object related to this node (as a subject) by the given predicate.
Statement	getFirstQuadAsSubject(IResourceNode predicate) Returns the first statement with the given predicate wherein this node is the subject.
java.util.Map<IResourceNode,java.util.Set<Statement>>	getQuadsAsSubject() Returns the mapping of predicate to statements wherein this node serves as the subject.
java.util.Set<Statement>	getQuadsAsSubject(IResourceNode predicate) Returns the statements with the given predicate wherein this node is the subject.
org.apache.commons.collections.MultiMap	getSubjects() Returns the subjects.
java.lang.String	getURI() Returns the name of this node.
int	hashCode()
void	removeObject(IResourceNode predicate, INode object, IResourceNode graph) Removes a statement wherein this node is the subject.
void	setQuadAsSubject(IResourceNode predicate, INode object, IResourceNode graph) Adds a statement wherein this node is the subject to the objects cache.
void	setSubject(IResourceNode predicate, INode subject) Adds a statement wherein this node is the object to the subjects cache.
java.lang.String	toString()
void	unsetQuadAsSubject(IResourceNode predicate, INode object, IResourceNode graph) Removes a statement wherein this node is the subject to the objects cache.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DataResourceNode

protected DataResourceNode(java.lang.String uri,
                           DataView view)

Creates a database-back resource node.

Parameters:

uri - the name of the resource

view - the view to which this resource belongs

Method Detail

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

getURI

public java.lang.String getURI()

Description copied from interface: IResourceNode

Returns the name of this node.

Specified by:

getURI in interface IResourceNode

Returns:

the name of this node

getSubjects

public org.apache.commons.collections.MultiMap getSubjects()

Description copied from interface: IResourceNode

Returns the subjects.

Specified by:

getSubjects in interface IResourceNode

Returns:

the subjects

getQuadsAsSubject

public java.util.Map<IResourceNode,java.util.Set<Statement>> getQuadsAsSubject()

Description copied from interface: IResourceNode

Returns the mapping of predicate to statements wherein this node serves as the subject.

Specified by:

getQuadsAsSubject in interface IResourceNode

Returns:

the mapping

setSubject

public void setSubject(IResourceNode predicate,
                       INode subject)

Adds a statement wherein this node is the object to the subjects cache.

Note: this method does not modify the database.

Parameters:

predicate - the predicate

subject - the subject

setQuadAsSubject

public void setQuadAsSubject(IResourceNode predicate,
                             INode object,
                             IResourceNode graph)

Adds a statement wherein this node is the subject to the objects cache.

Note: this method does not modify the database.

Parameters:

predicate - the predicate

object - the object

graph - the graph

unsetQuadAsSubject

public void unsetQuadAsSubject(IResourceNode predicate,
                               INode object,
                               IResourceNode graph)

Removes a statement wherein this node is the subject to the objects cache.

Note: this method does not modify the database.

Parameters:

predicate - the predicate

object - the object

graph - the graph

addObject

public void addObject(IResourceNode predicate,
                      INode object,
                      IResourceNode graph)

Description copied from interface: IResourceNode

Adds a statement wherein this node is the subject.

Specified by:

addObject in interface IResourceNode

Parameters:

predicate - the predicate

object - the object

graph - the graph

addObject

public void addObject(IResourceNode predicate,
                      INode object,
                      IResourceNode graph,
                      DataConnection conn)

Adds a statement wherein this node is the subject using the given connection.

Parameters:

predicate - the predicate

object - the object

graph - the graph

conn - the connection

removeObject

public void removeObject(IResourceNode predicate,
                         INode object,
                         IResourceNode graph)

Description copied from interface: IResourceNode

Removes a statement wherein this node is the subject.

Specified by:

removeObject in interface IResourceNode

Parameters:

predicate - the predicate

object - the object

graph - the graph

getQuadsAsSubject

public java.util.Set<Statement> getQuadsAsSubject(IResourceNode predicate)

Description copied from interface: IResourceNode

Returns the statements with the given predicate wherein this node is the subject.

Specified by:

getQuadsAsSubject in interface IResourceNode

Parameters:

predicate - the predicate

Returns:

the statements

getFirstQuadAsSubject

public Statement getFirstQuadAsSubject(IResourceNode predicate)

Description copied from interface: IResourceNode

Returns the first statement with the given predicate wherein this node is the subject.

Specified by:

getFirstQuadAsSubject in interface IResourceNode

Returns:

the statement

getFirstObject

public INode getFirstObject(IResourceNode predicate)

Description copied from interface: IResourceNode

Returns the first object related to this node (as a subject) by the given predicate.

Specified by:

getFirstObject in interface IResourceNode

Parameters:

predicate - the predicate

Returns:

the object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object