y.io.graphml.output
Class QueryOutputHandlersEvent

java.lang.Object
  java.util.EventObject
      y.io.graphml.output.QueryOutputHandlersEvent

All Implemented Interfaces:

java.io.Serializable

public final class QueryOutputHandlersEvent
extends java.util.EventObject

Event argument implementation that is used by the GraphMLHandler.fireQueryOutputHandlersEvent(QueryOutputHandlersEvent) event.

These event arguments can be used to addOutputHandler(y.io.graphml.output.OutputHandler,y.io.graphml.KeyScope) OutputHandler implementations to the GraphMLWriter dynamically at the time of writing.

See Also:

GraphMLHandler, Serialized Form

Nested Class Summary

static class

QueryOutputHandlersEvent.HandlerStruct Helper class that represents an OutputHandler that is bound to a certain scope.

Field Summary

Fields inherited from class java.util.EventObject

source

Constructor Summary

QueryOutputHandlersEvent(java.lang.Object source, GraphMLWriteContext context, java.util.List handlers)
Initializes a new instance of the QueryOutputHandlersEvent class.

Method Summary

void	addOutputHandler(OutputHandler handler, KeyScope scope) Adds the given output handler to the set of registered output handlers for the given scope.
GraphMLWriteContext	getContext() Gets the context for which the handlers are queried.

Methods inherited from class java.util.EventObject

getSource, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryOutputHandlersEvent

public QueryOutputHandlersEvent(java.lang.Object source,
                                GraphMLWriteContext context,
                                java.util.List handlers)

Initializes a new instance of the QueryOutputHandlersEvent class.

Parameters:

source - The origin of the event

context - The context to assign to the getContext() property.

handlers - The list of handlers to which the addOutputHandler(y.io.graphml.output.OutputHandler,y.io.graphml.KeyScope) method will add the added instances.

Method Detail

addOutputHandler

public void addOutputHandler(OutputHandler handler,
                             KeyScope scope)

Adds the given output handler to the set of registered output handlers for the given scope.

Parameters:

handler - The handler to add.

scope - The scope to use for the handler.

getContext

public GraphMLWriteContext getContext()

Gets the context for which the handlers are queried.

Returns:

The context of the query.