yext.graphml.reader
Class YGraphElementFactory

java.lang.Object
  yext.graphml.reader.YGraphElementFactory

All Implemented Interfaces:

AttributeConstants, AttributeFactory, GraphElementFactory

Direct Known Subclasses:

DotnetGraphElementFactory, YHierarchyGraphElementFactory

public class YGraphElementFactory

extends Object

implements GraphElementFactory, AttributeFactory

Implementation of GraphElementFactory for yfiles.

Nested Class Summary

protected class

YGraphElementFactory.AttributeData Data class for attributes.

Field Summary

protected YList	attributeList
protected Map	attributeMap
protected YList	createdGraphList
protected Class	graphImpl
protected YList	graphList

Fields inherited from interface org.graphdrawing.graphml.reader.GraphElementFactory

EDGEDEFAULT_DIRECTED, EDGEDEFAULT_UNDIRECTED, HYPEREDGE_TYPE_INT, HYPEREDGE_TYPE_OUT, HYPEREDGE_TYPE_UNDIR

Fields inherited from interface org.graphdrawing.graphml.attr.AttributeConstants

TYPE_BOOLEAN, TYPE_COMPLEX, TYPE_DOUBLE, TYPE_FLOAT, TYPE_INT, TYPE_LONG, TYPE_STRING

Constructor Summary

YGraphElementFactory(Class _graphImpl)
Creates a new factory.

YGraphElementFactory(Graph _graph)
Creates a new factory using a given graph instance to store the data.

Method Summary

void	createAttribute(GraphMLParseContext context, String name, String value) This method is called when an attribute value is encountered.
Object	createEdge(GraphMLParseContext context, String id, Object source, Object target, Object sourceport, Object targetport, boolean directed) This method creates an edge on the graph, between nodes source and target.
Object	createEndPoint(GraphMLParseContext context, String id, Object node, Object port, int type) Not implemented.
Object	createGraph(GraphMLParseContext context, String id, int edgedefault) Creates the graph, should set up data with attributes.
Object	createGraphML(GraphMLParseContext context) Not implemented.
Object	createHyperEdge(GraphMLParseContext context, String id) Not implemented.
Object	createNode(GraphMLParseContext context, String id) Creates a node on the passed graph, could be set up with attributes passed by.
Object	createPort(GraphMLParseContext context, Object owner, String name) Not implemented.
void	defineAttribute(String name, int contentType, int scopeType) This method is called when an attribute definition is encountered.
YList	getGraphList() Returns the list of graphs read from the input.

Methods inherited from class java.lang.Object

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

Field Detail

graphList

protected YList graphList

createdGraphList

protected YList createdGraphList

graphImpl

protected Class graphImpl

attributeList

protected YList attributeList

attributeMap

protected Map attributeMap

Constructor Detail

YGraphElementFactory

public YGraphElementFactory(Class _graphImpl)

Creates a new factory.

Parameters:

_graphImpl - Defines the class which is instantiated for every graph in the input. The class must provide a constructor without arguments and must be a subclass of Graph.

YGraphElementFactory

public YGraphElementFactory(Graph _graph)

Creates a new factory using a given graph instance to store the data.

Parameters:

_graph - the data of the first graph in the input is stored here.

Method Detail

getGraphList

public YList getGraphList()

Returns the list of graphs read from the input.

createGraphML

public Object createGraphML(GraphMLParseContext context)

Not implemented.

Specified by:

createGraphML in interface GraphElementFactory

Parameters:

context - the current parse context.

Returns:

null.

createGraph

public Object createGraph(GraphMLParseContext context,
                          String id,
                          int edgedefault)

Creates the graph, should set up data with attributes.

Specified by:

createGraph in interface GraphElementFactory

Parameters:

context - the current parse context.

id - the identifier of the graph as defined in the input data. May be null if no id has been specified.

edgedefault - indicating if edges are per default directed or undirected.

Returns:

java.lang.Object

createNode

public Object createNode(GraphMLParseContext context,
                         String id)

Creates a node on the passed graph, could be set up with attributes passed by.

Specified by:

createNode in interface GraphElementFactory

Parameters:

context - the current parse context.

id - the identifier of the node as defined in the input data.

Returns:

a user object representing a node.

createEdge

public Object createEdge(GraphMLParseContext context,
                         String id,
                         Object source,
                         Object target,
                         Object sourceport,
                         Object targetport,
                         boolean directed)

This method creates an edge on the graph, between nodes source and target. Moreover the attributes are passed with the creation-request, so the application could set up all data, gaining from this parameter.

Specified by:

createEdge in interface GraphElementFactory

Parameters:

context - the current parse context.

id - the identifier of the edge as defined in the input data. May be null if no id has been specified.

source - the user object representing the source node of the edge.

target - the user object representing the target node of the edge.

sourceport - the user object representing the source port of the edge.

targetport - the user object representing the target port of the edge.

directed - indicates whether the edge is directed or not.

Returns:

a user object representing an edge.

createPort

public Object createPort(GraphMLParseContext context,
                         Object owner,
                         String name)

Not implemented.

Specified by:

createPort in interface GraphElementFactory

Parameters:

context - the current parse context.

owner - the owner of the port (a node or another port)

name - the identifier of the port as defined in the input data.

Returns:

null

createHyperEdge

public Object createHyperEdge(GraphMLParseContext context,
                              String id)

Not implemented.

Specified by:

createHyperEdge in interface GraphElementFactory

Parameters:

context - the current parse context.

id - the identifier of the hyperedge as defined in the input data. May be null if no id has been specified.

Returns:

null

createEndPoint

public Object createEndPoint(GraphMLParseContext context,
                             String id,
                             Object node,
                             Object port,
                             int type)

Not implemented.

Specified by:

createEndPoint in interface GraphElementFactory

Parameters:

context - the current parse context.

id - the identifier of the endpoint as defined in the input data. May be null if no id has been specified.

node - the user object representing the associated node of the endpoint.

type - the direction type of the endpoint.

Returns:

null

defineAttribute

public void defineAttribute(String name,
                            int contentType,
                            int scopeType)

Description copied from interface: AttributeFactory

This method is called when an attribute definition is encountered.

Specified by:

defineAttribute in interface AttributeFactory

Parameters:

name - the name of the attribute

contentType - one of AttributeConstants.TYPE_INT, AttributeConstants.TYPE_LONG, AttributeConstants.TYPE_FLOAT, AttributeConstants.TYPE_DOUBLE, AttributeConstants.TYPE_STRING, AttributeConstants.TYPE_BOOLEAN.

createAttribute

public void createAttribute(GraphMLParseContext context,
                            String name,
                            String value)

Description copied from interface: AttributeFactory

This method is called when an attribute value is encountered.

Specified by:

createAttribute in interface AttributeFactory

Parameters:

context - the context in which the parser is.

name - the name of the attribute.

value - the value of the attribute.