com.goldencode.p2j.persist

Class TempLock

java.lang.Object

com.goldencode.p2j.persist.TempLock

public final class TempLock
extends java.lang.Object

Object which encapsulates a resettable lock on a specific DMO. Successful construction of an instance of this class indicates that the requested lock type was obtained from the appropriate lock manager or was already available to this session. The old lock type is restored by invoking reset().

Field Summary

Fields

Modifier and Type	Field and Description
private RecordIdentifier<java.lang.String>	ident Unique record identifier
private LockType	originalLockType Previous lock type of DMO
private Persistence	persistence Object which services lock requests

Constructor Summary

Constructors

Constructor and Description
TempLock(Persistence persistence, LockType lockType, java.lang.String table, java.lang.Long recordID) Constructor which acquires a record lock of the specified type.

Method Summary

Modifier and Type	Method and Description
(package private) void	reset() Reset the record lock back to its original type.

Methods inherited from class java.lang.Object

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

Field Detail

ident

private final RecordIdentifier<java.lang.String> ident

Unique record identifier

originalLockType

private final LockType originalLockType

Previous lock type of DMO

persistence

private final Persistence persistence

Object which services lock requests

Constructor Detail

TempLock

TempLock(Persistence persistence,
         LockType lockType,
         java.lang.String table,
         java.lang.Long recordID)
  throws LockUnavailableException

Constructor which acquires a record lock of the specified type. This constructor may block indefinitely if the lock is unavailable and the requested lock type is not a NO_WAIT variant.

Parameters:

persistence - Object which services lock requests.

lockType - Type of lock to be acquired.

table - Table containing target DMO.

recordID - Primary key ID of DMO being locked.

Throws:

LockUnavailableException

Method Detail

reset

void reset()

Reset the record lock back to its original type. This is a no-op if the old and new types are the same or if the lock type was never changed by this object.