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/* This file is part of the KDE project
Copyright (C) 2005 Jaroslaw Staniek <[email protected]>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "sqlitepreparedstatement.h"
#include <kdebug.h>
#include <assert.h>
using namespace KexiDB;
SQLitePreparedStatement::SQLitePreparedStatement(StatementType type, ConnectionInternal& conn,
FieldList& fields)
: KexiDB::PreparedStatement(type, conn, fields)
, SQLiteConnectionInternal(conn.connection)
, prepared_st_handle(0)
, m_resetRequired(false)
{
data_owned = false;
data = dynamic_cast<KexiDB::SQLiteConnectionInternal&>(conn).data; //copy
temp_st = generateStatementString();
#ifdef SQLITE2
//! @todo
#else
if (!temp_st.isEmpty()) {
res = sqlite3_prepare(
data, /* Database handle */
temp_st, //const char *zSql, /* SQL statement, UTF-8 encoded */
temp_st.length(), //int nBytes, /* Length of zSql in bytes. */
&prepared_st_handle, //sqlite3_stmt **ppStmt, /* OUT: Statement handle */
0 //const char **pzTail /* OUT: Pointer to unused portion of zSql */
);
if (SQLITE_OK != res) {
//! @todo copy error msg
}
}
#endif
}
SQLitePreparedStatement::~SQLitePreparedStatement()
{
#ifdef SQLITE2
//! @todo
#else
sqlite3_finalize(prepared_st_handle);
prepared_st_handle = 0;
#endif
}
bool SQLitePreparedStatement::execute()
{
#ifdef SQLITE2
//! @todo
#else
if (!prepared_st_handle)
return false;
if (m_resetRequired) {
res = sqlite3_reset(prepared_st_handle);
if (SQLITE_OK != res) {
//! @todo msg?
return false;
}
m_resetRequired = false;
}
int arg=1; //arg index counted from 1
KexiDB::Field *field;
Field::List _dummy;
Field::ListIterator itFields(_dummy);
//for INSERT, we're iterating over inserting values
//for SELECT, we're iterating over WHERE conditions
if (m_type == SelectStatement)
itFields = *m_whereFields;
else if (m_type == InsertStatement)
itFields = m_fields->fieldsIterator();
else
assert(0); //impl. error
for (QValueListConstIterator<QVariant> it = m_args.constBegin();
(field = itFields.current()); ++it, ++itFields, arg++)
{
if (it==m_args.constEnd() || (*it).isNull()) {//no value to bind or the value is null: bind NULL
res = sqlite3_bind_null(prepared_st_handle, arg);
if (SQLITE_OK != res) {
//! @todo msg?
return false;
}
continue;
}
if (field->isTextType()) {
//! @todo optimize: make a static copy so SQLITE_STATIC can be used
QCString utf8String((*it).toString().utf8());
res = sqlite3_bind_text(prepared_st_handle, arg,
(const char*)utf8String, utf8String.length(), SQLITE_TRANSIENT /*??*/);
if (SQLITE_OK != res) {
//! @todo msg?
return false;
}
}
else switch (field->type()) {
case KexiDB::Field::Byte:
case KexiDB::Field::ShortInteger:
case KexiDB::Field::Integer:
{
//! @todo what about unsigned > INT_MAX ?
bool ok;
const int value = (*it).toInt(&ok);
if (ok) {
res = sqlite3_bind_int(prepared_st_handle, arg, value);
if (SQLITE_OK != res) {
//! @todo msg?
return false;
}
}
else {
res = sqlite3_bind_null(prepared_st_handle, arg);
if (SQLITE_OK != res) {
//! @todo msg?
return false;
}
}
break;
}
case KexiDB::Field::Float:
case KexiDB::Field::Double:
res = sqlite3_bind_double(prepared_st_handle, arg, (*it).toDouble());
if (SQLITE_OK != res) {
//! @todo msg?
return false;
}
break;
case KexiDB::Field::BigInteger:
{
//! @todo what about unsigned > LLONG_MAX ?
bool ok;
Q_LLONG value = (*it).toLongLong(&ok);
if (ok) {
res = sqlite3_bind_int64(prepared_st_handle, arg, value);
if (SQLITE_OK != res) {
//! @todo msg?
return false;
}
}
else {
res = sqlite3_bind_null(prepared_st_handle, arg);
if (SQLITE_OK != res) {
//! @todo msg?
return false;
}
}
break;
}
case KexiDB::Field::Boolean:
res = sqlite3_bind_text(prepared_st_handle, arg,
QString::number((*it).toBool() ? 1 : 0).latin1(),
1, SQLITE_TRANSIENT /*??*/);
if (SQLITE_OK != res) {
//! @todo msg?
return false;
}
break;
case KexiDB::Field::Time:
res = sqlite3_bind_text(prepared_st_handle, arg,
(*it).toTime().toString(Qt::ISODate).latin1(),
sizeof("HH:MM:SS"), SQLITE_TRANSIENT /*??*/);
if (SQLITE_OK != res) {
//! @todo msg?
return false;
}
break;
case KexiDB::Field::Date:
res = sqlite3_bind_text(prepared_st_handle, arg,
(*it).toDate().toString(Qt::ISODate).latin1(),
sizeof("YYYY-MM-DD"), SQLITE_TRANSIENT /*??*/);
if (SQLITE_OK != res) {
//! @todo msg?
return false;
}
break;
case KexiDB::Field::DateTime:
res = sqlite3_bind_text(prepared_st_handle, arg,
(*it).toDateTime().toString(Qt::ISODate).latin1(),
sizeof("YYYY-MM-DDTHH:MM:SS"), SQLITE_TRANSIENT /*??*/);
if (SQLITE_OK != res) {
//! @todo msg?
return false;
}
break;
case KexiDB::Field::BLOB:
{
const QByteArray byteArray((*it).toByteArray());
res = sqlite3_bind_blob(prepared_st_handle, arg,
(const char*)byteArray, byteArray.size(), SQLITE_TRANSIENT /*??*/);
if (SQLITE_OK != res) {
//! @todo msg?
return false;
}
break;
}
default:
KexiDBWarn << "PreparedStatement::execute(): unsupported field type: "
<< field->type() << " - NULL value bound to column #" << arg << endl;
res = sqlite3_bind_null(prepared_st_handle, arg);
if (SQLITE_OK != res) {
//! @todo msg?
return false;
}
} //switch
}
//real execution
res = sqlite3_step(prepared_st_handle);
m_resetRequired = true;
if (m_type == InsertStatement && res == SQLITE_DONE) {
return true;
}
if (m_type == SelectStatement) {
//fetch result
//todo
}
#endif
return false;
}
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