y.io.gml
Class HierarchyNodeParser

java.lang.Object
  |
  +--y.io.gml.ItemParser
        |
        +--y.io.gml.NodeParser
              |
              +--y.io.gml.HierarchyNodeParser

All Implemented Interfaces:

GMLTokenizer.Callback

public class HierarchyNodeParser

extends NodeParser

This class is capable of parsing nodes and nested graphs of a Hierarchic Graph from valid gml. It is used by HierarchicGraphParser.

Field Summary

protected Node	folderNode
protected HierarchicGraphParser	parent
protected ParserFactory	parserFactory

Fields inherited from class y.io.gml.NodeParser

graph, id2Node, labelGraphics, nodeGraphics, nr

Fields inherited from class y.io.gml.ItemParser

attributes, childMap, delegate, level

Constructor Summary

HierarchyNodeParser(Graph2D graph, Map id2Node, HierarchicGraphParser parent, ParserFactory pf)

Method Summary

void	begin() this method will be called as soon as the parser enters the scope.
void	beginScope(String scopeName) Note: subclass implementers should make a super call, if they want to overwrite this method.
void	end() this method will be called as soon as the parser leaves the scope.
Object	getItem() Returns the "product" of this scope.

Methods inherited from class y.io.gml.NodeParser

childFinished, handleLabels

Methods inherited from class y.io.gml.ItemParser

addAttribute, addChild, attribute, attribute, 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

parserFactory

protected ParserFactory parserFactory

folderNode

protected Node folderNode

parent

protected HierarchicGraphParser parent

Constructor Detail

HierarchyNodeParser

public HierarchyNodeParser(Graph2D graph,
                           Map id2Node,
                           HierarchicGraphParser parent,
                           ParserFactory pf)

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 NodeParser

beginScope

public void beginScope(String scopeName)

Description copied from class: ItemParser

Note: subclass implementers should make a super call, if they want to overwrite this method.

Specified by:

beginScope in interface GMLTokenizer.Callback

Overrides:

beginScope in class ItemParser

Parameters:

scopeName - the name of the scope

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 NodeParser

getItem

public 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 NodeParser

Returns:

the result of the parsing, in this case a Map