Adobe® Flex® 4 Language Reference
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flash.data 
SQLTransactionLockType 
Packageflash.data
Classpublic class SQLTransactionLockType
InheritanceSQLTransactionLockType Inheritance Object

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0

This class contains the constants that represent the possible values for the option parameter of the SQLConnection.begin() method.

See also



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A reference to the class object or constructor function for a given object instance.
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 Inheritedprototype : Object
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Object
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Public Constants
 ConstantDefined By
  AIR-only DEFERRED : String = "deferred"
[static] Specifies the deferred locking transaction option.
SQLTransactionLockType
  AIR-only EXCLUSIVE : String = "exclusive"
[static] Specifies the exclusive locking transaction option.
SQLTransactionLockType
  AIR-only IMMEDIATE : String = "immediate"
[static] Specifies the immediate locking transaction option.
SQLTransactionLockType
Constant Detail
AIR-only 

DEFERRED

Constant
public static const DEFERRED:String = "deferred"

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0

Specifies the deferred locking transaction option. A deferred-lock transaction does not acquire a lock on the database until the database is first accessed. With a deferred transaction, a lock is not acquired until the first read or write operation.

See also

AIR-only 

EXCLUSIVE

Constant 
public static const EXCLUSIVE:String = "exclusive"

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0

Specifies the exclusive locking transaction option. An exclusive-locked transaction acquires a lock on the database immediately. Other SQLStatement objects executing against the same database through a different SQLConnection (in the same AIR application or a different one) can't read data from or write data to the database.

See also

AIR-only 

IMMEDIATE

Constant 
public static const IMMEDIATE:String = "immediate"

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0

Specifies the immediate locking transaction option. An immediate-locked transaction acquires a lock on the database immediately. SQLStatement objects executing against the same database through a different SQLConnection (in the same AIR application or a different one) can read data from the database but can't write data to it. However, for those other connections reading data from the database, the initial state of the data in the database is identical to the state of the database before the in-transaction SQLConnection instance's begin() method was called. Any uncommitted data changes made within the immediate-locked transaction are not available to the other connections.

See also