oracle.pg.common

Class EdgeCache

java.lang.Object

oracle.pg.common.EdgeCache

public class EdgeCache
extends java.lang.Object

This class implements a cache layer for OracleEdgeBase objects. Note that by design each graph will have its own edges cache.

Method Summary

Modifier and Type	Method and Description
void	clearCache() This method empties the cache
void	dumpStatistics(java.io.PrintStream ps) Dump edge cache statistics
OracleEdgeBase	get(java.lang.Long lID) Get an Edge from the cache using the given ID.
static EdgeCache	getInstance(OraclePropertyGraphBase opg) This method returns an instance of EdgeCache.
void	put(java.lang.Long lID, OracleEdgeBase e) Add one Edge to the cache.
void	put(OracleEdgeBase e) Add one Edge to the cache
OracleEdgeBase	remove(java.lang.Long lID) Remove one Edge from the cache
OracleEdgeBase	remove(OracleEdgeBase e) Remove one Edge from the cache

Methods inherited from class java.lang.Object

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

Method Detail

clearCache

public void clearCache()

This method empties the cache

dumpStatistics

public void dumpStatistics(java.io.PrintStream ps)

Dump edge cache statistics

get

public OracleEdgeBase get(java.lang.Long lID)

Get an Edge from the cache using the given ID. Returns NULL if the edge is not in the cache.

getInstance

public static EdgeCache getInstance(OraclePropertyGraphBase opg)

This method returns an instance of EdgeCache. Note that there is a 1:1 mapping between property graph names and EdgeCache objects

put

public void put(java.lang.Long lID,
                OracleEdgeBase e)

Add one Edge to the cache. TODO: avoid two separate calls to this API with the same IDs but different vertices.

put

public void put(OracleEdgeBase e)

Add one Edge to the cache

remove

public OracleEdgeBase remove(java.lang.Long lID)

Remove one Edge from the cache

remove

public OracleEdgeBase remove(OracleEdgeBase e)

Remove one Edge from the cache