qsql_firebird_array.cpp File Reference

(508f587717ef550368a8ce7120c1ba8caeabce96)

#include "qsql_firebird_array_p.h"
#include "qsql_firebird_helpers_p.h"
#include <QtCore/qvarlengtharray.h>
#include <firebird/impl/blr.h>
#include <algorithm>
#include <cstring>
#include <limits>

Include dependency graph for qsql_firebird_array.cpp:

Go to the source code of this file.

Functions
static bool	lookupArrayDesc (IAttachment *att, ITransaction *tra, IStatus *iStatus, IMaster *master, const QByteArray &relName, const QByteArray &fldName, ISC_ARRAY_DESC *desc)
static bool	cachedArrayDesc (IAttachment *att, ITransaction *tra, IStatus *iStatus, IMaster *master, ArrayDescCache &descCache, const QByteArray &relName, const QByteArray &fldName, ISC_ARRAY_DESC *desc)
static bool	arraySliceSize (const ISC_ARRAY_DESC &desc, const char *who, const QByteArray &relName, const QByteArray &fldName, QVarLengthArray< int > *numElements, qint64 *bufLen)
static const char *	readArrayBuffer (QList< QVariant > &list, const char *buffer, short curDim, const int *numElements, ISC_ARRAY_DESC *desc, IMaster *master, IStatus *iStatus)
static char *	createArrayBuffer (char *buffer, const QList< QVariant > &list, QMetaType::Type type, short curDim, ISC_ARRAY_DESC *desc, IMaster *master, IStatus *iStatus, QString &error)
static QByteArray	buildArraySdl (const ISC_ARRAY_DESC &desc, const QByteArray &relationName, const QByteArray &fieldName)
QVariant	fetchArray (IAttachment *att, ITransaction *tra, IStatus *iStatus, IMaster *master, ArrayDescCache &descCache, const ISC_QUAD &arrayId, const QString &relation, const QString &field)
bool	writeArray (IAttachment *att, ITransaction *tra, IStatus *iStatus, IMaster *master, ArrayDescCache &descCache, ISC_QUAD *arrayId, const QString &relation, const QString &field, const QList< QVariant > &list)

Function Documentation

arraySliceSize()

bool arraySliceSize ( const ISC_ARRAY_DESC & desc, const char * who, const QByteArray & relName, const QByteArray & fldName, QVarLengthArray< int > * numElements, qint64 * bufLen )

static

Validate the descriptor's dimension bounds and compute the per-dimension element counts and the total slice byte length in 64-bit: bounds come from system tables, and a wrapped or non-positive total would otherwise allocate a short buffer that the read/write helpers overrun. get/putSlice take an int length, so INT_MAX is the hard upper limit. Shared by fetchArray and writeArray so the safety checks cannot drift apart.

Definition at line 184 of file qsql_firebird_array.cpp.

buildArraySdl()

QByteArray buildArraySdl ( const ISC_ARRAY_DESC & desc, const QByteArray & relationName, const QByteArray & fieldName )

static

Build SDL (Slice Description Language) binary for array get/putSlice. Supports identifiers up to 255 chars (unlike isc_array_gen_sdl which is limited to 31).

Definition at line 447 of file qsql_firebird_array.cpp.

cachedArrayDesc()

bool cachedArrayDesc ( IAttachment * att, ITransaction * tra, IStatus * iStatus, IMaster * master, ArrayDescCache & descCache, const QByteArray & relName, const QByteArray & fldName, ISC_ARRAY_DESC * desc )

static

A column's array descriptor is immutable while the statement lives (it mirrors the column's DDL), so resolve it through a per-result cache: lookupArrayDesc costs two server-side metadata SELECTs per call, which would otherwise be paid for every row fetched and every parameter bound.

Definition at line 158 of file qsql_firebird_array.cpp.

createArrayBuffer()

char * createArrayBuffer ( char * buffer, const QList< QVariant > & list, QMetaType::Type type, short curDim, ISC_ARRAY_DESC * desc, IMaster * master, IStatus * iStatus, QString & error )

static

Definition at line 322 of file qsql_firebird_array.cpp.

fetchArray()

QVariant fetchArray	(	IAttachment *	att,
		ITransaction *	tra,
		IStatus *	iStatus,
		IMaster *	master,
		ArrayDescCache &	descCache,
		const ISC_QUAD &	arrayId,
		const QString &	relation,
		const QString &	field )

Definition at line 535 of file qsql_firebird_array.cpp.

lookupArrayDesc()

bool lookupArrayDesc ( IAttachment * att, ITransaction * tra, IStatus * iStatus, IMaster * master, const QByteArray & relName, const QByteArray & fldName, ISC_ARRAY_DESC * desc )

static

Definition at line 25 of file qsql_firebird_array.cpp.

readArrayBuffer()

const char * readArrayBuffer ( QList< QVariant > & list, const char * buffer, short curDim, const int * numElements, ISC_ARRAY_DESC * desc, IMaster * master, IStatus * iStatus )

static

Definition at line 215 of file qsql_firebird_array.cpp.

writeArray()

bool writeArray	(	IAttachment *	att,
		ITransaction *	tra,
		IStatus *	iStatus,
		IMaster *	master,
		ArrayDescCache &	descCache,
		ISC_QUAD *	arrayId,
		const QString &	relation,
		const QString &	field,
		const QList< QVariant > &	list )

Definition at line 589 of file qsql_firebird_array.cpp.