Abstract
This section describes the NdbIndexOperation
class and its public methods.
Parent class. NdbOperation
Child classes. None
Description.
NdbIndexOperation represents an index operation
for use in transactions. This class inherits from
NdbOperation; see
Section 2.3.15, “The NdbOperation Class”, for more information.
Note
NdbIndexOperation can be used only with unique
hash indexes; to work with ordered indexes, use
NdbIndexScanOperation. See
Section 2.3.13, “The NdbIndexScanOperation Class”.
Methods. The following table lists the public methods of this class and the purpose or use of each method:
| Method | Purpose / Use |
|---|---|
getIndex() |
Gets the index used by the operation |
readTuple() |
Reads a tuple from a table |
updateTuple() |
Updates an existing tuple in a table |
deleteTuple() |
Removes a tuple from a table |
Note
Index operations are not permitted to insert tuples.
For detailed descriptions, signatures, and examples of use for each
of these methods, see Section 2.3.15.2, “NdbOperation Methods”.
Types.
The NdbIndexOperation class defines no public
types of its own.
Class diagram.
This diagram shows all the available methods of the
NdbIndexOperation class:
Note
For more information about the use of
NdbIndexOperation, see
Section 1.3.2.3.1, “Single-row operations”.
