- 2.3 NDB API Classes, Interfaces, and Structures
- 2.3.1 The AutoGrowSpecification Structure
- 2.3.2 The Column Class
- 2.3.3 The Datafile Class
- 2.3.4 The Dictionary Class
- 2.3.5 The Element Structure
- 2.3.6 The Event Class
- 2.3.7 The GetValueSpec Structure
- 2.3.8 The HashMap Class
- 2.3.9 The Index Class
- 2.3.10 The IndexBound Structure
- 2.3.11 The LogfileGroup Class
- 2.3.12 The List Class
- 2.3.13 The Key_part_ptr Structure
- 2.3.14 The Ndb Class
- 2.3.15 The Ndb_cluster_connection Class
- 2.3.16 The NdbBlob Class
- 2.3.17 The NdbDictionary Class
- 2.3.18 The NdbError Structure
- 2.3.19 The NdbEventOperation Class
- 2.3.20 The NdbIndexOperation Class
- 2.3.21 The NdbIndexScanOperation Class
- 2.3.22 The NdbInterpretedCode Class
- 2.3.23 The NdbOperation Class
- 2.3.24 The NdbRecAttr Class
- 2.3.25 The NdbRecord Interface
- 2.3.26 The NdbScanFilter Class
- 2.3.27 The NdbScanOperation Class
- 2.3.28 The NdbTransaction Class
- 2.3.29 The Object Class
- 2.3.30 The OperationOptions Structure
- 2.3.31 The PartitionSpec Structure
- 2.3.32 The RecordSpecification Structure
- 2.3.33 The ScanOptions Structure
- 2.3.34 The SetValueSpec Structure
- 2.3.35 The Table Class
- 2.3.36 The Tablespace Class
- 2.3.37 The Undofile Class
NdbRecord is an interface which provides a
mapping to a full or a partial record stored in
NDB. In the latter case, it can be used in
conjunction with a bitmap to assist in access.
NdbRecord is available beginning with MySQL
Cluster NDB 6.2.3.
NdbRecord has no API methods of its own; rather
it acts as a handle that can be passed between various method calls
for use in many different sorts of operations, including the
following operation types:
Unique key reads and primary key reads
Table scans and index scans
DML operations involving unique keys or primary keys
Operations involving index bounds
The same NdbRecord can be used simultaneously in
multiple operations, transactions, and threads.
An NdbRecord can be created in NDB API programs
by calling the
createRecord() method of
the Dictionary class. In addition,
a number of NDB API methods have additional declarations in MySQL
Cluster NDB 6.2.3 and later MySQL Cluster releases that enable the
programmer to leverage NdbRecord:
In addition, new members of
NdbIndexScanOperation and
NdbDictionary are introduced in
MySQL Cluster NDB 6.2.3 for use with NdbRecord
scans:
IndexBoundis a structure used to describe index scan bounds.RecordSpecificationis a structure used to specify columns and range offsets.
Beginning with MySQL Cluster NDB 6.3.24 and MySQL Cluster NDB 7.0.4,
you can also use NdbRecord in conjunction with
the new PartitionSpec structure to
perform scans that take advantage of partition pruning, by means of
a variant of
NdbIndexScanOperation::setBound()
that was added in the same MySQL Cluster releases.
