LockGrantType (starrocks-bdb-je 18.3.17 API)

java.lang.Object
- java.lang.Enum<LockGrantType>
- - com.sleepycat.je.txn.LockGrantType

All Implemented Interfaces:

Serializable, Comparable<LockGrantType>
```
public enum LockGrantType
extends Enum<LockGrantType>
```
LockGrantType is an enumeration of the possible results of a lock attempt.

Enum Constant Summary

Enum Constants
Enum Constant and Description
`DENIED` The lock request was a non-blocking one and the lock has not been granted because a conflicting lock is held by another locker.
`EXISTING` The locker already owns the requested lock, and no new lock or upgrade is needed.
`NEW` The locker did not previously own a lock on the node, and a new lock has been granted.
`NONE_NEEDED` No lock has been granted because LockType.NONE was requested.
`PROMOTION` The locker previously owned a read lock on the node, and a write lock has been granted by upgrading the lock from read to write.
`WAIT_NEW` The locker did not previously own a lock on the node, and must wait for a new lock because a conflicting lock is held by another locker.
`WAIT_PROMOTION` The locker previously owned a read lock on the node, and must wait for a lock upgrade because a conflicting lock is held by another locker.
`WAIT_RESTART` The lock has not been granted because a conflicting lock is held by another locker, and a RangeRestartException must be thrown.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static LockGrantType`	`valueOf(String name)` Returns the enum constant of this type with the specified name.
`static LockGrantType[]`	`values()` Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Enum Constant Detail
  - NEW
```
public static final LockGrantType NEW
```
    The locker did not previously own a lock on the node, and a new lock has been granted.
  - WAIT_NEW
```
public static final LockGrantType WAIT_NEW
```
    The locker did not previously own a lock on the node, and must wait for a new lock because a conflicting lock is held by another locker.
  - PROMOTION
```
public static final LockGrantType PROMOTION
```
    The locker previously owned a read lock on the node, and a write lock has been granted by upgrading the lock from read to write.
  - WAIT_PROMOTION
```
public static final LockGrantType WAIT_PROMOTION
```
    The locker previously owned a read lock on the node, and must wait for a lock upgrade because a conflicting lock is held by another locker.
  - EXISTING
```
public static final LockGrantType EXISTING
```
    The locker already owns the requested lock, and no new lock or upgrade is needed.
  - DENIED
```
public static final LockGrantType DENIED
```
    The lock request was a non-blocking one and the lock has not been granted because a conflicting lock is held by another locker.
  - WAIT_RESTART
```
public static final LockGrantType WAIT_RESTART
```
    The lock has not been granted because a conflicting lock is held by another locker, and a RangeRestartException must be thrown.
  - NONE_NEEDED
```
public static final LockGrantType NONE_NEEDED
```
    No lock has been granted because LockType.NONE was requested.
- Method Detail
  - values
```
public static LockGrantType[] values()
```
    Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
```
for (LockGrantType c : LockGrantType.values())
    System.out.println(c);
```
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static LockGrantType valueOf(String name)
```
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
    
    Parameters:
    
    name - the name of the enum constant to be returned.
    
    Returns:
    
    the enum constant with the specified name
    
    Throws:
    
    IllegalArgumentException - if this enum type has no constant with the specified name
    
    NullPointerException - if the argument is null

Enum LockGrantType

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Enum Constant Detail

NEW

WAIT_NEW

PROMOTION

WAIT_PROMOTION

EXISTING

DENIED

WAIT_RESTART

NONE_NEEDED

Method Detail

values

valueOf