org.opentripplanner.routing.impl

Class MemoryGraphSource

java.lang.Object

org.opentripplanner.routing.impl.MemoryGraphSource

All Implemented Interfaces:

GraphSource

public class MemoryGraphSource
extends Object
implements GraphSource

An implementation of GraphSource that store a transient graph in memory.

Nested Class Summary

Nested classes/interfaces inherited from interface org.opentripplanner.routing.services.GraphSource

GraphSource.Factory

Constructor Summary

Constructors

Constructor and Description
MemoryGraphSource(String routerId, Graph graph) Create an in-memory graph source with no runtime router configuration.
MemoryGraphSource(String routerId, Graph graph, com.fasterxml.jackson.databind.JsonNode config) Create an in-memory graph source with the specififed runtime router configuration JSON.

Method Summary

Modifier and Type	Method and Description
void	evict() Callback when the graph (source) gets evicted from the repository.
Router	getRouter()
boolean	reload(boolean force, boolean preEvict) Reload the graph from it's source.

Methods inherited from class java.lang.Object

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

Constructor Detail

MemoryGraphSource

public MemoryGraphSource(String routerId,
                         Graph graph)

Create an in-memory graph source with no runtime router configuration.

MemoryGraphSource

public MemoryGraphSource(String routerId,
                         Graph graph,
                         com.fasterxml.jackson.databind.JsonNode config)

Create an in-memory graph source with the specififed runtime router configuration JSON.

Method Detail

getRouter

public Router getRouter()

Specified by:

getRouter in interface GraphSource

Returns:

The router containing a graph object. Delegates to the Router lifecycle manager the startup and shutdown of the graph.

reload

public boolean reload(boolean force,
                      boolean preEvict)

Description copied from interface: GraphSource

Reload the graph from it's source.

Specified by:

reload in interface GraphSource

Parameters:

force - True to force a reload, false to check only.

preEvict - True to evict the old version *before* loading the new one. In that case the implementation have to take care of making the getGraph() call wait while the new graph is being loaded and not return null.

Returns:

False if a new graph has not been reloaded and we could not keep the previous one: it should be evicted.

evict

public void evict()

Description copied from interface: GraphSource

Callback when the graph (source) gets evicted from the repository.

Specified by:

evict in interface GraphSource