org.opentripplanner.routing.services

Interface GraphSource

All Known Implementing Classes:

InputStreamGraphSource, MemoryGraphSource

public interface GraphSource

A class responsible of graph creation / ownership.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	GraphSource.Factory Factory of GraphSource.

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.

Method Detail

getRouter

Router getRouter()

Returns:

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

reload

boolean reload(boolean force,
               boolean preEvict)

Reload the graph from it's source.

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

void evict()

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