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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#include "activitydatastorage.h"
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#include <QSqlDatabase>
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#include <QSqlQuery>
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#include <QSqlError>
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#include <QStringList>
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const char KConnectionName[] = "ActivityDataStorage";
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ActivityDataStorage::ActivityDataStorage()
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{
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QSqlDatabase database;
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if (QSqlDatabase::contains(KConnectionName)) {
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database = QSqlDatabase::database(KConnectionName);
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} else {
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database = QSqlDatabase::addDatabase("QSQLITE", KConnectionName);
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database.setDatabaseName("activitydatastorage.db");
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if (!database.open()) {
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qFatal(qPrintable(database.lastError().text()));
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}
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}
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if (!checkTables()) {
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recreateTables();
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}
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}
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ActivityDataStorage::~ActivityDataStorage()
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{
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QSqlDatabase::database(KConnectionName).close();
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}
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bool ActivityDataStorage::addActivity(const QString &activityId, const QVariant &data)
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{
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QSqlDatabase database = QSqlDatabase::database(KConnectionName);
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QByteArray streamedData;
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{
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QDataStream stream(&streamedData, QIODevice::WriteOnly);
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stream << data;
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}
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// insert data
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QSqlQuery query(database);
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if (!query.prepare("INSERT INTO Activities(Name, Data) VALUES(:Name, :Data)")) {
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qCritical(qPrintable(query.lastError().text()));
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return false;
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}
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query.bindValue(":Name", activityId);
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query.bindValue(":Data", streamedData);
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if (!query.exec()) {
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qCritical(qPrintable(query.lastError().text()));
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return false;
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}
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return true;
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}
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bool ActivityDataStorage::removeActivity(const QString &activityId)
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{
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QString sqlCommand = QString("DELETE FROM Activities WHERE Name = '%1'").arg(activityId);
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QSqlQuery query(QSqlDatabase::database(KConnectionName));
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if (!query.exec(sqlCommand)) {
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qCritical(qPrintable(query.lastError().text()));
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return false;
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}
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return query.numRowsAffected() > 0;
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}
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bool ActivityDataStorage::updateActivity(const QString &activityId, const QVariant &data)
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{
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QSqlDatabase database = QSqlDatabase::database(KConnectionName);
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QByteArray streamedData;
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{
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QDataStream stream(&streamedData, QIODevice::WriteOnly);
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stream << data;
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}
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// update data
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QSqlQuery query(database);
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if (!query.prepare("UPDATE Activities SET Data = :Data WHERE Name = :Name")) {
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qCritical(qPrintable(query.lastError().text()));
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return false;
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}
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query.bindValue(":Data", streamedData);
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query.bindValue(":Name", activityId);
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if (!query.exec()) {
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qCritical(qPrintable(query.lastError().text()));
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return false;
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}
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return query.numRowsAffected() > 0;
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}
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QVariant ActivityDataStorage::activityData(const QString &activityId) const
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{
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QSqlDatabase database = QSqlDatabase::database(KConnectionName);
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QSqlQuery query(database);
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if (!query.exec(QString("SELECT Data FROM Activities WHERE Name = '%1'").arg(activityId))) {
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qCritical(qPrintable(query.lastError().text()));
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return QVariant();
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}
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QVariant result;
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if (query.next()) {
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QByteArray data(query.value(0).toByteArray());
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QDataStream stream(&data, QIODevice::ReadOnly);
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stream >> result;
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}
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return result;
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}
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bool ActivityDataStorage::checkTables()
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{
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QStringList expectedTables("Activities");
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QStringList actualTables = QSqlDatabase::database(KConnectionName).tables();
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return (expectedTables == actualTables);
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}
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void ActivityDataStorage::recreateTables()
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{
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QSqlDatabase database = QSqlDatabase::database(KConnectionName);
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if (!database.transaction()) {
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qFatal(qPrintable(database.lastError().text()));
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}
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// drop any existing tables
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{
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QSqlQuery dropQuery(database);
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foreach(const QString &tableName, database.tables()) {
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if (!dropQuery.exec(QString("DROP TABLE %1").arg(tableName))) {
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qFatal(qPrintable(dropQuery.lastError().text()));
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}
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}
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}
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// create new table
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{
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QSqlQuery createQuery(database);
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QString statement(
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"CREATE TABLE Activities("
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"Name TEXT NOT NULL PRIMARY KEY UNIQUE,"
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"Data BLOB NOT NULL)");
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if (!createQuery.exec(statement)) {
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qFatal(qPrintable(createQuery.lastError().text()));
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}
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}
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if (!database.commit()) {
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qFatal(qPrintable(database.lastError().text()));
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}
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}
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