y.io.gml
Class EdgeParser

java.lang.Object
  y.io.gml.ItemParser
      y.io.gml.EdgeParser

All Implemented Interfaces:

GMLTokenizer.Callback

public class EdgeParser
extends ItemParser

This class is used by GraphParser. It can parse the .edge scope It will create an Edge in a graph for each run.

Field Summary

protected EdgeGraphicsParser	edgeGraphicsParser The parser instance that parses the graphics section.
protected EdgeRealizer	er The current realizer that is parsed.
protected Graph2D	graph The graph instance for which the nodes will be created.
protected java.util.Map	id2Edge The mapping between the gml IDs and the edges.
protected java.util.Map	id2Node The mapping between the gml IDs and the nodes.
protected LabelGraphicsParser	labelGraphics The parser for the label graphics section

Fields inherited from class y.io.gml.ItemParser

attributes, childMap, delegate, level

Constructor Summary

EdgeParser(Graph2D graph, java.util.Map id2Node, java.util.Map id2Edge)
Creates an edge parser, which is capable of parsing the top level attributes of the .graph.edge scope.

Method Summary

void	begin() this method will be called as soon as the parser enters the scope.
void	childFinished(ItemParser child) this method will be called, as soon as the a child ItemParser finished and returned from its end() method.
void	end() this method will be called as soon as the parser leaves the scope.
java.lang.Object	getItem() Returns the "product" of this scope.
protected void	handleLabels() Applies the parsed edge label attributes to the edge labels of this edges.

Methods inherited from class y.io.gml.ItemParser

addAttribute, addChild, attribute, attribute, beginScope, endScope, getAttributes, getBoolean, getDouble, getDouble, getInt, getInt, getLevel, getString

Methods inherited from class java.lang.Object

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

Field Detail

graph

protected Graph2D graph

The graph instance for which the nodes will be created.

id2Node

protected java.util.Map id2Node

The mapping between the gml IDs and the nodes.

id2Edge

protected java.util.Map id2Edge

The mapping between the gml IDs and the edges.

edgeGraphicsParser

protected EdgeGraphicsParser edgeGraphicsParser

The parser instance that parses the graphics section.

er

protected EdgeRealizer er

The current realizer that is parsed.

labelGraphics

protected LabelGraphicsParser labelGraphics

The parser for the label graphics section

Constructor Detail

EdgeParser

public EdgeParser(Graph2D graph,
                  java.util.Map id2Node,
                  java.util.Map id2Edge)

Creates an edge parser, which is capable of parsing the top level attributes of the .graph.edge scope.

Parameters:

graph - the graph, for which an edge will be parsed

id2Node - a map, which contains mappings between node ids (Integer) and Node instances

id2Edge - a map, that will be filled by this class with mappings between edge ids (Integer) to edge instances

Method Detail

begin

public void begin()

Description copied from class: ItemParser

this method will be called as soon as the parser enters the scope. This implementation will clear the attribute map. Subclasses should therefore make a super call.

Overrides:

begin in class ItemParser

childFinished

public void childFinished(ItemParser child)

Description copied from class: ItemParser

this method will be called, as soon as the a child ItemParser finished and returned from its end() method. This implementation does nothing. Subclasses should nevertheless make a super call.

Overrides:

childFinished in class ItemParser

Parameters:

child - the child ItemParser, which just finished

handleLabels

protected void handleLabels()

Applies the parsed edge label attributes to the edge labels of this edges.

end

public void end()

Description copied from class: ItemParser

this method will be called as soon as the parser leaves the scope. This implementation does nothing. Subclasses should nevertheless make a super call.

Overrides:

end in class ItemParser

getItem

public java.lang.Object getItem()

Description copied from class: ItemParser

Returns the "product" of this scope. This method should be called after this parser has left the scope, i.e. after ItemParser.end() has been called. The latter should construct the resulting item from the collected data and this item should be returned by this method. By default, this method return the map of the attributes.

Overrides:

getItem in class ItemParser

Returns:

the result of the parsing, in this case a Map