com.goldencode.p2j.persist.remote

Class RemotePersistence

java.lang.Object

com.goldencode.p2j.persist.Persistence

com.goldencode.p2j.persist.remote.RemotePersistence

All Implemented Interfaces:

UnsafePersistence

public final class RemotePersistence
extends Persistence

A subclass of Persistence which is intended to be used with a database instance managed by a remote P2J server. Most work is executed directly against the database via Hibernate; however, certain services must be serialized through the remote P2J server instance. These include:

• Record lock management. Record locking must be serialized through the P2J server instance which is authoritative for the target database, to ensure that the lock manager implementation in use for a given database can properly manage concurrent locking requests. This is accomplished by instantiating a specialized LockManager implementation (RemoteLockManager, which delegates requests for locking services to the remote server.
• Primary key generation. Likewise, the management of new primary keys must be delegated to the remote server which is authoritative for the target database. This is accomplished by instantiating a specialized IdentityManager implementation (RemoteIdentityManager).

Author:

ECF

Field Summary

Fields

Modifier and Type	Field and Description
private Session	session Network session with remote server

Fields inherited from class com.goldencode.p2j.persist.Persistence

ID_GEN_SEQUENCE

Constructor Summary

Constructors

Constructor and Description
RemotePersistence(Database database, Dialect dialect) Construct an instance for a particular, physical database, storing the dialect class which Hibernate uses to create a portability layer.

Method Summary

Modifier and Type	Method and Description
protected IdentityManager	createIdentityManager() Create and initialize the identity manager to be used with this instance of persistence services.
protected LockManager	createLockManager() Create and initialize the lock manager to be used with this instance of persistence services.

Methods inherited from class com.goldencode.p2j.persist.Persistence

allowDBUniqueCheck, beginTransaction, cleanup, commit, delete, deleteOrUpdate, equals, executeSQL, executeSQL, executeSQL, executeSQLBatch, executeSQLBatch, executeSQLBatch, executeSQLQuery, flush, get, getCodepage, getCollation, getDatabase, getDialect, getIdentityManager, getLockManager, getRecordLockContext, getSession, getSingleSQLResult, hashCode, initialize, initializeInstance, isActive, isTransactionOpen, list, list, list, list, load, load, load, lock, lock, lockTable, merge, message, nextPrimaryKey, preprocessQueryParameter, queryLock, quickLoad, quickLoad, rollback, save, save, save, scroll, scroll, scroll, scroll, scroll, scroll, scroll, scroll, scroll, scroll, setUnsafe, supportsLazyQueryResultsMode

Methods inherited from class java.lang.Object

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

Field Detail

session

private final Session session

Network session with remote server

Constructor Detail

RemotePersistence

public RemotePersistence(Database database,
                         Dialect dialect)

Construct an instance for a particular, physical database, storing the dialect class which Hibernate uses to create a portability layer.

Parameters:

database - Database with which this instance is permanently associated.

dialect - Portability object used by Hibernate to issue commands to the database.

Method Detail

createLockManager

protected LockManager createLockManager()

Create and initialize the lock manager to be used with this instance of persistence services.

Overrides:

createLockManager in class Persistence

Returns:

Lock manager instance.

createIdentityManager

protected IdentityManager createIdentityManager()

Create and initialize the identity manager to be used with this instance of persistence services.

Overrides:

createIdentityManager in class Persistence

Returns:

Identity manager instance.