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137 lines
3.9 KiB
137 lines
3.9 KiB
/* This file is part of the KDE project
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Copyright (C) 2005 Jaroslaw Staniek <js@iidea.pl>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "preparedstatement.h"
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#include <kexidb/connection.h>
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#include <kexidb/connection_p.h>
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#include <kdebug.h>
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using namespace KexiDB;
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PreparedStatement::PreparedStatement(StatementType type, ConnectionInternal& conn,
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FieldList& fields, const TQStringList& where)
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: TDEShared()
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, m_type(type)
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, m_fields(&fields)
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, m_where(where.isEmpty() ? new TQStringList(where) : 0)
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, m_whereFields(0)
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{
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Q_UNUSED(conn);
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}
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PreparedStatement::~PreparedStatement()
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{
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delete m_where;
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delete m_whereFields;
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}
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TQCString PreparedStatement::generateStatementString()
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{
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TQCString s(1024);
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if (m_type == SelectStatement) {
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//! @todo only tables and trivial queries supported for select...
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s = "SELECT ";
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bool first = true;
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// for (uint i=0; i<m_fields->fieldCount(); i++) {
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for (Field::ListIterator it(m_fields->fieldsIterator()); it.current(); ++it) {
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if (first)
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first = false;
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else
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s.append(", ");
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s.append(it.current()->name().latin1());
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}
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first = true;
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s.append(" WHERE ");
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// for (uint i=0; i<m_fields->fieldCount(); i++) {
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m_whereFields = new Field::List();
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for (TQStringList::ConstIterator it=m_where->constBegin(); it!=m_where->constEnd(); ++it) {
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// for (Field::ListIterator it(m_fields->fieldsIterator()); it.current(); ++it) {
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if (first)
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first = false;
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else
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s.append(" AND ");
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Field *f = m_fields->field(*it);
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if (!f) {
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KexiDBWarn << "PreparedStatement::generateStatementString(): no '"
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<< *it << "' field found" << endl;
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continue;
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}
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m_whereFields->append(f);
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s.append((*it).latin1());
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s.append("=?");
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}
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}
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else if (m_type == InsertStatement /*&& dynamic_cast<TableSchema*>(m_fields)*/) {
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//! @todo only tables supported for insert; what about views?
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TableSchema *table = m_fields->fieldCount()>0 ? m_fields->field(0)->table() : 0;
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if (!table)
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return ""; //err
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TQCString namesList;
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bool first = true;
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const bool allTableFieldsUsed = dynamic_cast<TableSchema*>(m_fields); //we are using a selection of fields only
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Field::ListIterator it = m_fields->fieldsIterator();
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for (uint i=0; i<m_fields->fieldCount(); i++, ++it) {
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if (first) {
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s.append( "?" );
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if (!allTableFieldsUsed)
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namesList = it.current()->name().latin1();
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first = false;
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} else {
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s.append( ",?" );
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if (!allTableFieldsUsed)
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namesList.append(TQCString(", ")+it.current()->name().latin1());
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}
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}
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s.append(")");
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s.prepend(TQCString("INSERT INTO ") + table->name().latin1()
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+ (allTableFieldsUsed ? TQCString() : (" (" + namesList + ")"))
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+ " VALUES (");
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}
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return s;
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}
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PreparedStatement& PreparedStatement::operator<< ( const TQVariant& value )
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{
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m_args.append(value);
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return *this;
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}
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/*bool PreparedStatement::insert()
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{
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const bool res = m_conn->drv_prepareStatement(this);
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const bool res = m_conn->drv_insertRecord(this);
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clearArguments();
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return res;
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}
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bool PreparedStatement::select()
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{
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const bool res = m_conn->drv_bindArgumentForPreparedStatement(this, m_args.count()-1);
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}*/
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void PreparedStatement::clearArguments()
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{
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m_args.clear();
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}
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