org.opentripplanner.updater

Class GraphUpdaterManager

java.lang.Object

org.opentripplanner.updater.GraphUpdaterManager

public class GraphUpdaterManager
extends Object

This class is attached to the graph:

 GraphUpdaterManager updaterManager = graph.getUpdaterManager();
 

Each updater will run in its own thread. When changes to the graph have to be made by these updaters, this should be done via the execute method of this manager to prevent race conditions between graph write operations.

Constructor Summary

Constructors

Constructor and Description
GraphUpdaterManager(Graph graph) Constructor.

Method Summary

Modifier and Type	Method and Description
void	addUpdater(GraphUpdater updater) Adds an updater to the manager and runs it immediately in its own thread.
void	execute(GraphWriterRunnable runnable) This is the method to use to modify the graph from the updaters.
GraphUpdater	getUpdater(int id) Just an example of fetching status information from the graph updater manager to expose it in a web service.
Map<Integer,String>	getUpdaterDescriptions() Just an example of fetching status information from the graph updater manager to expose it in a web service.
int	size()
void	startUpdaters() This should be called only once at startup to kick off every updater in its own thread, and only after all the updaters have had their setup methods called.
void	stop()

Methods inherited from class java.lang.Object

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

Constructor Detail

GraphUpdaterManager

public GraphUpdaterManager(Graph graph)

Constructor.

Parameters:

graph - is the Graph that will be updated.

Method Detail

stop

public void stop()

addUpdater

public void addUpdater(GraphUpdater updater)

Adds an updater to the manager and runs it immediately in its own thread.

Parameters:

updater - is the updater to add and run

execute

public void execute(GraphWriterRunnable runnable)

This is the method to use to modify the graph from the updaters. The runnables will be scheduled after each other, guaranteeing that only one of these runnables will be active at any time.

Parameters:

runnable - is a graph writer runnable

size

public int size()

startUpdaters

public void startUpdaters()

This should be called only once at startup to kick off every updater in its own thread, and only after all the updaters have had their setup methods called.

getUpdaterDescriptions

public Map<Integer,String> getUpdaterDescriptions()

Just an example of fetching status information from the graph updater manager to expose it in a web service. More useful stuff should be added later.

getUpdater

public GraphUpdater getUpdater(int id)

Just an example of fetching status information from the graph updater manager to expose it in a web service. More useful stuff should be added later.