LockOperation (Oracle - Berkeley DB Java API)
Date: 2010-03-30

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## com.sleepycat.db
Class LockOperation

    java.lang.Object
      com.sleepycat.db.LockOperation

    public final class LockOperation

extends Object

Operations that can be performed on locks.

Field Summary
`static LockOperation` | `GET` Get the lock defined by the values of the mode and obj fields, for the specified locker.
`static LockOperation` | `GET_TIMEOUT` Identical to LockOperation GET except that the value in the timeout field overrides any previously specified timeout value for this lock.
`static LockOperation` | `PUT` The lock to which the lock field refers is released.
`static LockOperation` | `PUT_ALL` All locks held by the specified locker are released.
`static LockOperation` | `PUT_OBJ` All locks held on obj are released.
`static LockOperation` | `TIMEOUT` Cause the specified locker to timeout immediately.

Method Summary
`String` | `toString()`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Field Detail

### GET

    public static final LockOperation GET

  Get the lock defined by the values of the mode and obj fields, for the specified locker. Upon return from `Environment.lockVector`, if the lock field is non-null, a reference to the acquired lock is stored there. (This reference is invalidated by any call to `Environment.lockVector` or `Environment.putLock` that releases the lock.)

### GET_TIMEOUT

    public static final LockOperation GET_TIMEOUT

  Identical to LockOperation GET except that the value in the timeout field overrides any previously specified timeout value for this lock. A value of 0 turns off any previously specified timeout.

### PUT

    public static final LockOperation PUT

  The lock to which the lock field refers is released. The locker, mode and obj fields are ignored.

### PUT_ALL

    public static final LockOperation PUT_ALL

  All locks held by the specified locker are released. The lock, mode, and obj fields are ignored. Locks acquired in operations performed by the current call to `Environment.lockVector` which appear before the PUT_ALL operation are released; those acquired in operations appearing after the PUT_ALL operation are not released.

### PUT_OBJ

    public static final LockOperation PUT_OBJ

  All locks held on obj are released. The locker parameter and the lock and mode fields are ignored. Locks acquired in operations performed by the current call to `Environment.lockVector` that appear before the PUT_OBJ operation operation are released; those acquired in operations appearing after the PUT_OBJ operation are not released.

### TIMEOUT

    public static final LockOperation TIMEOUT

  Cause the specified locker to timeout immediately. If the database environment has not configured automatic deadlock detection, the transaction will timeout the next time deadlock detection is performed. As transactions acquire locks on behalf of a single locker ID, timing out the locker ID associated with a transaction will time out the transaction itself.

Method Detail

### toString

    public String toString()

  Overrides:
    `toString` in class `Object`

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