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JET_LS

Windows

Last modified: January 09, 2012

Applies to: Windows | Windows Server

The JET_LS data type contains a context handle to local storage (LS).This handle might be associated with a cursor or a table and might refer to dynamically allocated resources.

Windows XP:  JET_LS is introduced in Windows XP.

typedef JET_API_PTR JET_LS;

Data Types

JET_LS

A value of JET_LSNil indicates an invalid context handle.

Remarks

A context handle is initially associated with the JET_LS data type, using JetSetLS. The context handle can be retrieved from the JET_LS data type, using JetGetLS.

The context handle can be explicitly disassociated from the JET_LS data type using JetGetLS with JET_bitLSReset. Alternatively, the context handle can be implicitly disassociated from the JET_LS data type when the underlying object is released by the database engine as a result of direct or indirect action by the application. In the implicit case, a runtime callback is issued to the application so that it can clean up the context handle. For more information on implicitly disassociating from the JET_LS data type, see JetSetLS.

The following flags are associated with the JET_LS data type.

Term

Description

JET_bitLSReset

The context handle is disassociated from the object.

JET_bitLSCursor

Set or retrieve the local storage associated with a table cursor.

JET_bitLSTable

Set or retrieve the local storage associated with a table.

JET_LSNil

The context handle is invalid.

Requirements

Client

Requires Windows Vista or Windows XP.

Server

Requires Windows Server 2008 or Windows Server 2003.

Header

Declared in Esent.h.

See Also

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