org.corpus_tools.salt.graph.impl

Class NodeImpl

java.lang.Object

org.corpus_tools.salt.graph.impl.LabelableElementImpl

org.corpus_tools.salt.graph.impl.IdentifiableElementImpl

org.corpus_tools.salt.graph.impl.NodeImpl

All Implemented Interfaces:

Serializable, IdentifiableElement, LabelableElement, Node

Direct Known Subclasses:

SNodeImpl

public class NodeImpl
extends IdentifiableElementImpl
implements Node

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Node	delegate A delegate object of the same type.
protected Graph	graph container graph

Fields inherited from class org.corpus_tools.salt.graph.impl.LabelableElementImpl

EXPECTED_NUMBER_OF_LABELS

Constructor Summary

Constructors

Constructor and Description
NodeImpl() Initializes an object of type Node.
NodeImpl(Node delegate) Initializes an object of type Node.

Method Summary

Methods

Modifier and Type	Method and Description
void	addLayer(Layer layer) Adds this node to the passed layer.
protected void	basicSetGraph(Graph graph) This is an internally used method.
Node	getDelegate() Returns the delegate object.
Graph	getGraph() Returns the container graph of this node.
Set<? extends Layer>	getLayers() Returns all layers containing this node.
void	removeLayer(Layer layer) Removes this node from the passed layer.
void	setGraph(Graph graph) Sets the container graph of this node.

Methods inherited from class org.corpus_tools.salt.graph.impl.IdentifiableElementImpl

getId, getIdentifier, removeLabel, setId, setIdentifier, toString

Methods inherited from class org.corpus_tools.salt.graph.impl.LabelableElementImpl

addLabel, basicAddLabel, basicRemoveLabel, containsLabel, getLabel, getLabel, getLabels, getLabelsByNamespace, removeAll, removeLabel, sizeLabels

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.corpus_tools.salt.graph.IdentifiableElement

getId, getIdentifier, setId, setIdentifier

Methods inherited from interface org.corpus_tools.salt.graph.LabelableElement

addLabel, containsLabel, getLabel, getLabel, getLabels, getLabelsByNamespace, removeAll, removeLabel, removeLabel, sizeLabels

Field Detail

delegate

protected Node delegate

A delegate object of the same type. If delegate is not null, all functions of this method are delegated to the delegate object. Setting delegate makes this object to a container.

graph

protected Graph graph

container graph

Constructor Detail

NodeImpl

public NodeImpl()

Initializes an object of type Node.

NodeImpl

public NodeImpl(Node delegate)

Initializes an object of type Node. If delegate is not null, all functions of this method are delegated to the delegate object. Setting delegate makes this object to a container.

Parameters:

a - delegate object of the same type.

Method Detail

getDelegate

public Node getDelegate()

Returns the delegate object. If delegate is not null, all functions of this method are delegated to the delegate object. Setting delegate makes this object to a container.

Returns:

the delegate object

getGraph

public Graph getGraph()

Returns the container graph of this node.

Specified by:

getGraph in interface Node

Returns:

graph object which contains this node.

setGraph

public void setGraph(Graph graph)

Sets the container graph of this node. The passed graph and this node will be double chained, which means the method Graph.getNodes() will return a list containing this node.

Specified by:

setGraph in interface Node

Parameters:

graph - graph which contains this node

basicSetGraph

protected void basicSetGraph(Graph graph)

This is an internally used method. To implement a double chaining of Graph and Node object when an node is inserted into this graph and to avoid an endless invocation the insertion of an node is splited into the two methods setGraph(Graph) and basicSetGraph(Graph). The invocation of methods is implement as follows:

 Graph.addNode(Node)                      Node.setGraph(Graph)
         ||             \ /                   ||
         ||              X                    ||
         \/             / \                   \/
 Graph#basicAddNode(Node)            Node#basicSetGraph(Graph)
 

That means method setGraph(Graph) calls basicSetGraph(Graph) and Graph#basicAddNode(Node). And method setGraph(Graph) calls Graph#basicAddNode(Node) and Node#basicSetGraph(Graph).

Parameters:

graph - graph which contains this node

getLayers

public Set<? extends Layer> getLayers()

Returns all layers containing this node. This is a computed set and only works, when this node is contained in a graph. If this list is used multiple times, it makes sense to store that set.

Specified by:

getLayers in interface Node

Returns:

a set of layers containing this node

addLayer

public void addLayer(Layer layer)

Adds this node to the passed layer. If this node is not already contained in the layer's graph, it will be added to the graph.
Since the method getLayers() retrieves all layers by accessing the layers in graph, this class does not contain an own collection of layers.

Specified by:

addLayer in interface Node

Parameters:

layer - to which this node should be added

removeLayer

public void removeLayer(Layer layer)

Removes this node from the passed layer.
Since the method getLayers() retrieves all layers by accessing the layers in graph, this class does not contain an own collection of layers.

Specified by:

removeLayer in interface Node

Parameters:

layer - from which this node should be removed