queryschemaparameter.cpp

00001 /* This file is part of the KDE project
00002    Copyright (C) 2006 Jaroslaw Staniek <js@iidea.pl>
00003 
00004    This library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Library General Public
00006    License as published by the Free Software Foundation; either
00007    version 2 of the License, or (at your option) any later version.
00008 
00009    This library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Library General Public License for more details.
00013 
00014    You should have received a copy of the GNU Library General Public License
00015    along with this library; see the file COPYING.LIB.  If not, write to
00016    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00017  * Boston, MA 02110-1301, USA.
00018 */
00019 
00020 #include "queryschemaparameter.h"
00021 #include "driver.h"
00022 
00023 #include <kdebug.h>
00024 #include <qguardedptr.h>
00025 
00026 using namespace KexiDB;
00027 
00028 QuerySchemaParameter::QuerySchemaParameter()
00029  : type(Field::InvalidType)
00030 {
00031 }
00032 
00033 QuerySchemaParameter::~QuerySchemaParameter()
00034 {
00035 }
00036 
00037 QString QuerySchemaParameter::debugString() const
00038 {
00039     return QString("msg=\"%1\" type=\"%2\"").arg(Field::typeName(type)).arg(message);
00040 }
00041 
00042 void KexiDB::debug(const QuerySchemaParameterList& list)
00043 {
00044     KexiDBDbg << QString("Query parameters (%1):").arg(list.count()) << endl;
00045     foreach(QuerySchemaParameterListConstIterator, it, list)
00046         KexiDBDbg << " - " << (*it).debugString() << endl;
00047 }
00048 
00049 //================================================
00050 
00051 class QuerySchemaParameterValueListIterator::Private
00052 {
00053     public:
00054         Private(const Driver& aDriver, const QValueList<QVariant>& aParams)
00055          : driver(&aDriver)
00056          , params(aParams)
00057         {
00058             //move to last item, as the order is reversed due to parser's internals
00059             paramsIt = params.fromLast(); //constBegin();
00060             paramsItPosition = params.count();
00061         }
00062         QGuardedPtr<const Driver> driver;
00063         const QValueList<QVariant> params;
00064         QValueList<QVariant>::ConstIterator paramsIt;
00065         uint paramsItPosition;
00066 };
00067 
00068 QuerySchemaParameterValueListIterator::QuerySchemaParameterValueListIterator(
00069     const Driver& driver, const QValueList<QVariant>& params)
00070  : d( new Private(driver, params) )
00071 {
00072 }
00073 
00074 QuerySchemaParameterValueListIterator::~QuerySchemaParameterValueListIterator()
00075 {
00076     delete d;
00077 }
00078 
00079 QVariant QuerySchemaParameterValueListIterator::getPreviousValue()
00080 {
00081     if (d->paramsItPosition == 0) { //d->params.constEnd()) {
00082         KexiDBWarn << "QuerySchemaParameterValues::getPreviousValue() no prev value" << endl;
00083         return QVariant();
00084     }
00085     QVariant res( *d->paramsIt );
00086     --d->paramsItPosition;
00087     --d->paramsIt;
00088 //  ++d->paramsIt;
00089     return res;
00090 }
00091 
00092 QString QuerySchemaParameterValueListIterator::getPreviousValueAsString(Field::Type type)
00093 {
00094     if (d->paramsItPosition == 0) { //d->params.constEnd()) {
00095         KexiDBWarn << "QuerySchemaParameterValues::getPreviousValueAsString() no prev value" << endl;
00096         return d->driver->valueToSQL(type, QVariant()); //"NULL"
00097     }
00098     QString res( d->driver->valueToSQL(type, *d->paramsIt) );
00099     --d->paramsItPosition;
00100     --d->paramsIt;
00101 //  ++d->paramsIt;
00102     return res;
00103 }
Kexi API Documentation (2.0 alpha)

queryschemaparameter.cpp
