com.sleepycat.je.txn
Class LockType

java.lang.Object
  com.sleepycat.je.txn.LockType

public class LockType
extends java.lang.Object

LockType is a type safe enumeration of all lock types. Methods on LockType objects can be used to determine whether a type conflicts with another type or can be upgraded to another type.

Field Summary

static LockType	NONE NONE is used for requesting a dirty read and does not appear in the conflict or upgrade matrices.
static LockType	RANGE_INSERT
static LockType	RANGE_READ
static LockType	RANGE_WRITE
static LockType	READ Lock types.
static LockType	RESTART RESTART is used for waiting for a restart and does not appear in the conflict or upgrade matrices.
static LockType	WRITE

Method Summary

boolean	isWriteLock() Returns true if this is a WRITE or RANGE_WRITE lock.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

READ

public static final LockType READ

Lock types. Indexes must be kept manually synchronized in the matrixes below.

WRITE

public static final LockType WRITE

RANGE_READ

public static final LockType RANGE_READ

RANGE_WRITE

public static final LockType RANGE_WRITE

RANGE_INSERT

public static final LockType RANGE_INSERT

NONE

public static final LockType NONE

NONE is used for requesting a dirty read and does not appear in the conflict or upgrade matrices.

RESTART

public static final LockType RESTART

RESTART is used for waiting for a restart and does not appear in the conflict or upgrade matrices.

Method Detail

isWriteLock

public final boolean isWriteLock()

Returns true if this is a WRITE or RANGE_WRITE lock. For RANGE_INSERT, false is returned because RANGE_INSERT is used to lock the key following the insertion key, not the insertion key itself.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object