org.tmatesoft.sqljet.core.internal
Enum SqlJetLockType

java.lang.Object
  extended by java.lang.Enum<SqlJetLockType>
      extended by org.tmatesoft.sqljet.core.internal.SqlJetLockType
All Implemented Interfaces:
java.io.Serializable, java.lang.Comparable<SqlJetLockType>

public enum SqlJetLockType
extends java.lang.Enum<SqlJetLockType>

Transaction locks types. PENDING lock may not be passed directly to lock(). Instead, a process that requests an EXCLUSIVE lock may actually obtain a PENDING lock. This can be upgraded to an EXCLUSIVE lock by a subsequent call to lock().


Enum Constant Summary
EXCLUSIVE
          An EXCLUSIVE lock precludes all other locks.
NONE
          Not locked
PENDING
          A single process may hold a PENDING lock on a file at any one time.
RESERVED
          A single process may hold a RESERVED lock on a file at any time.
SHARED
          Any number of processes may hold a SHARED lock simultaneously.
 
Method Summary
static SqlJetLockType valueOf(java.lang.String name)
          Returns the enum constant of this type with the specified name.
static SqlJetLockType[] 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

NONE

public static final SqlJetLockType NONE
Not locked


SHARED

public static final SqlJetLockType SHARED
Any number of processes may hold a SHARED lock simultaneously.


RESERVED

public static final SqlJetLockType RESERVED
A single process may hold a RESERVED lock on a file at any time. Other processes may hold and obtain new SHARED locks.


PENDING

public static final SqlJetLockType PENDING
A single process may hold a PENDING lock on a file at any one time. Existing SHARED locks may persist, but no new SHARED locks may be obtained by other processes.


EXCLUSIVE

public static final SqlJetLockType EXCLUSIVE
An EXCLUSIVE lock precludes all other locks.

Method Detail

values

public static SqlJetLockType[] 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 (SqlJetLockType c : SqlJetLockType.values())
    System.out.println(c);

Returns:
an array containing the constants of this enum type, in the order they are declared

valueOf

public static SqlJetLockType valueOf(java.lang.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:
java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
java.lang.NullPointerException - if the argument is null