NdbQueryBuilder Class Reference

#include <NdbQueryBuilder.hpp>

Public Member Functions
void	destroy ()
const NdbQueryDef *	prepare ()
NdbConstOperand *	constValue (Int32 value)
NdbConstOperand *	constValue (Uint32 value)
NdbConstOperand *	constValue (Int64 value)
NdbConstOperand *	constValue (Uint64 value)
NdbConstOperand *	constValue (double value)
NdbConstOperand *	constValue (const char *value)
NdbConstOperand *	constValue (const void *value, Uint32 len)
NdbParamOperand *	paramValue (const char *name=0)
NdbLinkedOperand *	linkedValue (const NdbQueryOperationDef *, const char *attr)
const NdbQueryLookupOperationDef *	readTuple (const NdbDictionary::Table *, const NdbQueryOperand *const keys[], const NdbQueryOptions *options=0, const char *ident=0)
const NdbQueryLookupOperationDef *	readTuple (const NdbDictionary::Index *, const NdbDictionary::Table *, const NdbQueryOperand *const keys[], const NdbQueryOptions *options=0, const char *ident=0)
const NdbQueryTableScanOperationDef *	scanTable (const NdbDictionary::Table *, const NdbQueryOptions *options=0, const char *ident=0)
const NdbQueryIndexScanOperationDef *	scanIndex (const NdbDictionary::Index *, const NdbDictionary::Table *, const NdbQueryIndexBound *bound=0, const NdbQueryOptions *options=0, const char *ident=0)

Static Public Member Functions
static NdbQueryBuilder *	create ()

Friends
class	NdbQueryBuilderImpl

Error Handling
const NdbError &	getNdbError () const
NdbQueryBuilderImpl &	getImpl () const

Detailed Description

The Query builder constructs a NdbQueryDef which is a collection of (possibly linked) NdbQueryOperationDefs Each NdbQueryOperationDef may use NdbQueryOperands to specify keys and bounds.

LIFETIME:

• All NdbQueryOperand and NdbQueryOperationDef objects created in the context of a NdbQueryBuilder has a lifetime restricted by:

  1. The NdbQueryDef created by the ::prepare() methode.
  2. The NdbQueryBuilder if the builder is destructed before the query was prepared.

  A single NdbQueryOperand or NdbQueryOperationDef object may be used/referrer multiple times during the build process whenever we need a reference to the same value/node during the build phase.

• The NdbQueryDef produced by the ::prepare() method has a lifetime until it is explicit released by NdbQueryDef::release()

Definition at line 363 of file NdbQueryBuilder.hpp.

Member Function Documentation

NdbQueryBuilder * NdbQueryBuilder::create ( )

static

Allocate an instance.

Returns

New instance, or NULL if allocation failed.

Definition at line 692 of file NdbQueryBuilder.cpp.

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void NdbQueryBuilder::destroy

(

)

Release this object and any resources held by it.

Definition at line 715 of file NdbQueryBuilder.cpp.

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const NdbError & NdbQueryBuilder::getNdbError

(

)

const

Get error object with information about the latest error.

Returns

An error object with information about the latest error.

Definition at line 733 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