net.ontopia.persistence.proxy
Class RWLocalCache

java.lang.Object
  net.ontopia.persistence.proxy.AbstractLocalCache
      net.ontopia.persistence.proxy.RWLocalCache

All Implemented Interfaces:

AccessRegistrarIF, StorageCacheIF

public class RWLocalCache
extends AbstractLocalCache

INTERNAL: A transactional storage cache implementation. The cache uses the transaction to lookup objects and relies on the fact that PersistentIFs can store their own data.

Field Summary

protected ObjectStates

ostates

Fields inherited from class net.ontopia.persistence.proxy.AbstractLocalCache

pcache, pregistrar, ticket, txn

Method Summary

boolean	exists(StorageAccessIF access, IdentityIF identity) INTERNAL: Can be called to verify whether the specified identity exists in the cache or in the data repository.
java.lang.Object	getValue(StorageAccessIF access, IdentityIF identity, int field) INTERNAL: A call forwarded by the transaction (TransactionIF) from persistent objects (PersistentIF) when the field value needs to be retrieved from storage.
java.lang.String	toString()

Methods inherited from class net.ontopia.persistence.proxy.AbstractLocalCache

clear, close, createIdentity, createIdentity, createIdentity, evictField, evictFields, evictIdentity, getRegistrar, getTicket, isFieldLoaded, isObjectLoaded, prefetch, registerEviction, registerField, registerIdentity, releaseEviction

Methods inherited from class java.lang.Object

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

Field Detail

ostates

protected ObjectStates ostates

Method Detail

exists

public boolean exists(StorageAccessIF access,
                      IdentityIF identity)

Description copied from interface: StorageCacheIF

INTERNAL: Can be called to verify whether the specified identity exists in the cache or in the data repository. Whether the data repository is actually asked depends on the policy of the storage cache.

Specified by:

exists in interface StorageCacheIF

Specified by:

exists in class AbstractLocalCache

getValue

public java.lang.Object getValue(StorageAccessIF access,
                                 IdentityIF identity,
                                 int field)

Description copied from interface: StorageCacheIF

INTERNAL: A call forwarded by the transaction (TransactionIF) from persistent objects (PersistentIF) when the field value needs to be retrieved from storage. The field value will be returned.

Specified by:

getValue in interface StorageCacheIF

Specified by:

getValue in class AbstractLocalCache

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object