org.apache.ojb.broker.locking
Class LockIsolation

java.lang.Object
  org.apache.ojb.broker.locking.LockIsolation

Direct Known Subclasses:

LockIsolationManager.ReadCommittedIsolation, LockIsolationManager.ReadUncommittedIsolation, LockIsolationManager.RepeatableReadIsolation, LockIsolationManager.SerializableIsolation

abstract class LockIsolation
extends Object

This interface defines method that a Locking Strategy must implement according to the isolation level it represents.

Constructor Summary

LockIsolation()

Method Summary

(package private) abstract boolean	allowMultipleRead() Decide if this lock strategy allows multiple read locks.
(package private) abstract boolean	allowReadWhenWrite() Decide if this lock strategy allows one or more read locks when a write lock already exists.
(package private) abstract boolean	allowWriteWhenRead() Decide if this lock strategy allows a write lock when one or more read locks already exists.
(package private) abstract int	getIsolationLevel() Returns the isolation level identity.
(package private) abstract String	getIsolationLevelAsString() Returns the isolation level identity as string.

Methods inherited from class java.lang.Object

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

Constructor Detail

LockIsolation

LockIsolation()

Method Detail

getIsolationLevel

abstract int getIsolationLevel()

Returns the isolation level identity.

Returns:

The isolation level number.

getIsolationLevelAsString

abstract String getIsolationLevelAsString()

Returns the isolation level identity as string.

Returns:

The isolation level as string.

allowMultipleRead

abstract boolean allowMultipleRead()

Decide if this lock strategy allows multiple read locks.

Returns:

True if multiple read locks allowed, else False.

allowWriteWhenRead

abstract boolean allowWriteWhenRead()

Decide if this lock strategy allows a write lock when one or more read locks already exists.

Returns:

True if write lock allowed when read lock exist, else False.

allowReadWhenWrite

abstract boolean allowReadWhenWrite()

Decide if this lock strategy allows one or more read locks when a write lock already exists.

Returns:

True if read locks allowed when write lock exist, else False.