NdbQueryOperand Class Reference

#include <NdbQueryBuilder.hpp>

Inheritance diagram for NdbQueryOperand:

Public Member Functions
const NdbDictionary::Column *	getColumn () const
NdbQueryOperandImpl &	getImpl () const

Protected Member Functions
	NdbQueryOperand (NdbQueryOperandImpl &impl)

Detailed Description

This is the API interface for building a (composite) query definition, possibly existing of multiple operations linked together (aka 'joined')

A query mainly consist of two types of objects:

• NdbQueryOperationDef defines a lookup, or scan on a single table.
• NdbQueryOperand defines a single value which may be used to define a key, filter or bound on a NdbQueryOperationDef.

Construction of these objects are through the NdbQueryBuilder factory. To enforce this restriction, c'tor, d'tor operator for the NdbQuery objects has been declared 'private'. NdbQuery objects should not be copied - Copy constructor and assignment operand has been private declared to enforce this restriction. NdbQueryOperand, a construct for specifying values which are used to specify lookup keys, bounds or filters in the query tree.

Definition at line 56 of file NdbQueryBuilder.hpp.

Member Function Documentation

const NdbDictionary::Column * NdbQueryOperand::getColumn

(

)

const

BEWARE: Return 'NULL' Until the operand has been bound to an operation.

Definition at line 396 of file NdbQueryBuilder.cpp.

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NdbQueryOperandImpl & NdbQueryOperand::getImpl ( ) const

inline

Get'ers for NdbQueryOperand...Impl object. Functions overridden to supply 'impl' casted to the correct '...OperandImpl' type for each available interface class.

Definition at line 372 of file NdbQueryBuilder.cpp.

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

• storage/ndb/src/ndbapi/NdbQueryBuilder.hpp
• storage/ndb/src/ndbapi/NdbQueryBuilder.cpp