Abstract
This section discusses the
NdbIndexScanOperation class and its public
members.
Parent class. NdbScanOperation
Child classes. None
Description.
The NdbIndexScanOperation class represents a
scan operation using an ordered index. This class inherits from
NdbScanOperation and
NdbOperation. See
Section 2.3.18, “The NdbScanOperation Class”, and
Section 2.3.15, “The NdbOperation Class”, for more information about
these classes.
Note
NdbIndexScanOperation is for use with ordered
indexes only; to work with unique hash indexes, use
NdbIndexOperation.
Methods. The following table lists the public methods of this class and the purpose or use of each method:
| Method | Purpose / Use |
|---|---|
get_range_no() |
Gets the range number for the current row |
getSorted() |
Checks whether the current scan is sorted |
getDescending() |
Checks whether the current scan is sorted |
readTuples() |
Reads tuples using an ordered index |
setBound() |
Defines a bound on the index key for a range scan |
reset_bounds() |
Resets bounds, puts the operation in the send queue |
end_of_bound() |
Marks the end of a bound |
For detailed descriptions, signatures, and examples of use for each
of these methods, see
Section 2.3.13.2, “NdbIndexScanOperation Methods”.
Types.
The NdbIndexScanOperation class defines one
public type. See
Section 2.3.13.1, “The NdbIndexScanOperation::BoundType Type”.
Beginning with MySQL Cluster NDB 6.2.3, this class defines an
additional struct for use with operations employing
NdbRecord; see Section 2.3.29, “The IndexBound Structure”,
and Section 2.3.25, “The NdbRecord Interface”, for more information.
Class diagram.
This diagram shows all the public members of the
NdbIndexScanOperation class:
Note
For more information about the use of
NdbIndexScanOperation, see
Section 1.3.2.3.2, “Scan Operations”, and
Section 1.3.2.3.3, “Using Scans to Update or Delete Rows”
