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oracle.jdeveloper.offlinedb.model
Class NodeCache

java.lang.Object
oracle.jdeveloper.offlinedb.model.NodeCache

public abstract class NodeCache

extends java.lang.Object

A NodeCache is a cache of object IDs to URLs that every OfflineDBObjectProvider has to lookup the file representing a given object.

Since:

11.1.1.2.0

See Also:

OfflineDBObjectProvider.getNodeCache()

Constructor Summary

NodeCache()

Method Summary

boolean	containsURL(java.net.URL url) Tests whether the given URL has an ID mapped to it in the cache
DBObjectID	findID(Locatable node) Finds the DBObject for the given node in the cache.
abstract DBObjectID	findID(java.net.URL url) Finds the DBObject from the given URL.
Node	findNode(DBObject obj) Attempts to find the node in the navigator for the given object.
Node	findNode(DBObjectID id) Attempts to find a node in the navigator for the given object.
java.net.URL	findURL(DBObject obj) Attempts to find a URL for the given object.
abstract java.net.URL	findURL(DBObjectID id) Attempts to find a URL for the given object id.
protected java.util.logging.Logger	getLogger()

Methods inherited from class java.lang.Object

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

Constructor Detail

NodeCache

public NodeCache()

Method Detail

findNode

public final Node findNode(DBObject obj)

Attempts to find the node in the navigator for the given object. The object must have a valid ID for a URL to be found.

Parameters:

obj - an offline database object

Returns:

the node for that object's offline file (if one exists).

See Also:

findURL(DBObject)

findNode

public final Node findNode(DBObjectID id)

Attempts to find a node in the navigator for the given object.

Parameters:

id - an offline database object's id

Returns:

the node for that object's offline file (if one exists).

See Also:

findURL(DBObjectID)

findURL

public final java.net.URL findURL(DBObject obj)

Attempts to find a URL for the given object. The object must have a valid ID for a URL to be found.

Parameters:

obj - an offline database object

Returns:

the URL for that object's offline file (if one exists).

findURL

public abstract java.net.URL findURL(DBObjectID id)

Attempts to find a URL for the given object id.

Parameters:

id - an offline database object's id

Returns:

the URL for that object's offline file (if one exists).

findID

public final DBObjectID findID(Locatable node)

Finds the DBObject for the given node in the cache.

Parameters:

node - a Locatable object representing an offline database object's file

Returns:

the id for that offline database object

containsURL

public boolean containsURL(java.net.URL url)

Tests whether the given URL has an ID mapped to it in the cache

Parameters:

url - an offline database object's URL

Returns:

true if the url is in this cache

findID

public abstract DBObjectID findID(java.net.URL url)

Finds the DBObject from the given URL.

getLogger

protected java.util.logging.Logger getLogger()

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