y.io.graphml.graph2d
Class PostprocessorInputHandler

java.lang.Object
  y.io.graphml.graph2d.PostprocessorInputHandler

All Implemented Interfaces:

InputHandler

public class PostprocessorInputHandler
extends Object
implements InputHandler

This input handler parses end executes postprocessor instructions specified in GraphML files at graph scope.

Field Summary

static String

IGNORE_POSTPROCESSOR_ERRORS

Constructor Summary

PostprocessorInputHandler()

Method Summary

boolean	acceptKey(NamedNodeMap map) Accepts keys at graph scope whose attribute yfiles.type has the value postprocessors.
void	applyDefault(GraphMLParseContext context) This method is invoked when no data tag is defined, and the default value should be applied.
ParsePrecedence	getPrecedence() Gets the parse precedence that is associated with this instance.
void	parseData(GraphMLParseContext context, Node node) Parses and executes postprocessing instructions.
protected void	startModule(YModule module, Graph2D graph, GraphMLParseContext context) Starts the given module with the given graph.

Methods inherited from class java.lang.Object

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

Field Detail

IGNORE_POSTPROCESSOR_ERRORS

public static final String IGNORE_POSTPROCESSOR_ERRORS

See Also:

Constant Field Values

Constructor Detail

PostprocessorInputHandler

public PostprocessorInputHandler()

Method Detail

acceptKey

public boolean acceptKey(NamedNodeMap map)

Accepts keys at graph scope whose attribute yfiles.type has the value postprocessors.

parseData

public void parseData(GraphMLParseContext context,
                      Node node)
               throws GraphMLParseException

Parses and executes postprocessing instructions.

Specified by:

parseData in interface InputHandler

Throws:

GraphMLParseException

Parameters:

context - The context in which the parser is.

node - The DOM node which is actually processed.

startModule

protected void startModule(YModule module,
                           Graph2D graph,
                           GraphMLParseContext context)
                    throws GraphMLParseException

Starts the given module with the given graph. This method is called from parseData for each parsed post-processor module.

Throws:

GraphMLParseException - if an exception is thrown by running the module.

Parameters:

module - The module to start.

graph - The graph to pass to the module.

context - The context in which the parser is.

getPrecedence

public ParsePrecedence getPrecedence()

Description copied from interface: InputHandler

Gets the parse precedence that is associated with this instance.

Specified by:

getPrecedence in interface InputHandler

Returns:

The parse precedence for this instance.

applyDefault

public void applyDefault(GraphMLParseContext context)

Description copied from interface: InputHandler

This method is invoked when no data tag is defined, and the default value should be applied.

Specified by:

applyDefault in interface InputHandler

Parameters:

context - the current parse context.