NdbDictionary Class Reference

Data dictionary class. More...

#include <NdbDictionary.hpp>

Classes
struct	AutoGrowSpecification
class	Column
	Represents a column in an NDB Cluster table. More...
class	Datafile
class	Dictionary
	Dictionary for defining and retreiving meta data. More...
class	Event
	Represents an Event in NDB Cluster. More...
class	HashMap
	Represents a HashMap in an NDB Cluster. More...
class	Index
	Represents an index in an NDB Cluster. More...
class	LogfileGroup
class	NdbDataPrintFormat
class	Object
	Meta information about a database object (a table, index, etc) More...
class	ObjectId
class	OptimizeIndexHandle
	Represents a Index Optimization Handle passed as argument to optimizeIndex. More...
class	OptimizeTableHandle
	Represents a Table Optimization Handle Passed as argument to optimizeTable. More...
struct	RecordSpecification
class	Table
	Represents a table in NDB Cluster. More...
class	Tablespace
class	Undofile

Public Types
enum	NdbRecordFlags { RecMysqldShrinkVarchar = 0x1, RecMysqldBitfield = 0x2 }
enum	RecordType { TableAccess, IndexAccess }
typedef Column	Attribute

Static Public Member Functions
static RecordType	getRecordType (const NdbRecord *record)
static const char *	getRecordTableName (const NdbRecord *record)
static const char *	getRecordIndexName (const NdbRecord *record)
static bool	getFirstAttrId (const NdbRecord *record, Uint32 &firstAttrId)
static bool	getNextAttrId (const NdbRecord *record, Uint32 &attrId)
static bool	getOffset (const NdbRecord *record, Uint32 attrId, Uint32 &offset)
static bool	getNullBitOffset (const NdbRecord *record, Uint32 attrId, Uint32 &nullbit_byte_offset, Uint32 &nullbit_bit_in_byte)
static const char *	getValuePtr (const NdbRecord *record, const char *row, Uint32 attrId)
static char *	getValuePtr (const NdbRecord *record, char *row, Uint32 attrId)
static bool	isNull (const NdbRecord *record, const char *row, Uint32 attrId)
static int	setNull (const NdbRecord *record, char *row, Uint32 attrId, bool value)
static Uint32	getRecordRowLength (const NdbRecord *record)
static const unsigned char *	getEmptyBitmask ()
static class NdbOut &	printFormattedValue (class NdbOut &out, const NdbDataPrintFormat &format, const NdbDictionary::Column *c, const void *val)

Detailed Description

Data dictionary class.

The preferred and supported way to create and drop tables and indexes in ndb is through the MySQL Server (see MySQL reference Manual, section MySQL Cluster).

Tables and indexes that are created directly through the NdbDictionary class can not be viewed from the MySQL Server. Dropping indexes directly via the NdbApi will cause inconsistencies if they were originally created from a MySQL Cluster.

This class supports schema data enquiries such as:

1. Enquiries about tables (Dictionary::getTable, Table::getNoOfColumns, Table::getPrimaryKey, and Table::getNoOfPrimaryKeys)
2. Enquiries about indexes (Dictionary::getIndex, Index::getNoOfColumns, and Index::getColumn)

This class supports schema data definition such as:

1. Creating tables (Dictionary::createTable) and table columns
2. Dropping tables (Dictionary::dropTable)
3. Creating secondary indexes (Dictionary::createIndex)
4. Dropping secondary indexes (Dictionary::dropIndex)

NdbDictionary has several help (inner) classes to support this:

1. NdbDictionary::Dictionary the dictionary handling dictionary objects
2. NdbDictionary::Table for creating tables
3. NdbDictionary::Column for creating table columns
4. NdbDictionary::Index for creating secondary indexes

See ndbapi_simple_index.cpp for details of usage.

Definition at line 66 of file NdbDictionary.hpp.

Member Typedef Documentation

typedef Column NdbDictionary::Attribute

???

Definition at line 642 of file NdbDictionary.hpp.

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The documentation for this class was generated from the following files:

• storage/ndb/include/ndbapi/NdbDictionary.hpp
• storage/ndb/src/ndbapi/NdbDictionary.cpp