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+/*
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+ * Copyright (C) 2015 Christian Ehringfeld <c.ehringfeld@t-online.de>
+ *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU Lesser General Public License as published by
  * the Free Software Foundation.
+ *
  * This program 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 General Public License
  * for more details.
+ *
  * You should have received a copy of the GNU Lesser General Public License
  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  */
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+            Christian Ehringfeld
 #include "database.h"
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+using namespace CuteEntityManager;
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+            Christian Ehringfeld
 Database::Database(QSqlDatabase database) {
     this->database = database;
     this->init();
     this->connectionName = this->database.connectionName();
+}
 Database::Database(QString databaseType, QString connectionName, QString databasename) {
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+    this->database = QSqlDatabase::addDatabase(databaseType, connectionName);
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+    this->connectionName = connectionName;
     this->database.setDatabaseName(databasename);
     this->init();
+}
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+Database::Database(QString databaseType, QString connectionName, QString hostname, QString databasename,
                    QString username, QString password, qint64 port) {
     this->database = QSqlDatabase::addDatabase(databaseType, connectionName);
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+    this->connectionName = connectionName;
     this->database.setHostName(hostname);
     this->database.setDatabaseName(databasename);
     this->database.setUserName(username);
     this->database.setPassword(password);
     this->database.setPort(port);
     this->init();
+}
 void Database::init() {
     this->database.open();
     this->supportTransactions = this->database.driver()->hasFeature(QSqlDriver::Transactions);
+}
 Database::~Database() {
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+    if (this->database.isOpen()) {
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+        this->database.close();
+    }
     QSqlDatabase::removeDatabase(this->connectionName);
+}
 QString Database::getConnectionName() {
     return this->connectionName;
+}
 bool Database::transaction(const QString &query) {
     bool rc = false;
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+    if (supportTransactions) {
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+        this->database.transaction();
         QSqlQuery sqlquery = QSqlQuery(this->database);
         sqlquery.exec(query);
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+        if (!this->database.commit()) {
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+            this->database.rollback();
+        }
     } else {
         rc = this->exec(query);
+    }
     return rc;
+}
 QSqlQuery Database::getQuery() {
     return QSqlQuery(this->database);
+}
 QSqlQuery Database::getQuery(const QString &prepare) {
     QSqlQuery q = QSqlQuery(this->database);
     q.prepare(prepare);
     return q;
+}
 bool Database::transaction(const QStringList &queries) {
     bool ok = false;
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+    if (this->supportTransactions) {
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+        this->database.transaction();
         QSqlQuery sqlquery = QSqlQuery(this->database);
         for (int var = 0; var < queries.size(); ++var) {
             sqlquery.exec(queries.at(var));
+        }
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+        if (!this->database.commit()) {
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+            this->database.rollback();
         } else {
             ok = true;
+        }
     } else {
         ok = this->exec(queries);
+    }
     return ok;
+}
 bool Database::transaction(QSqlQuery &query) {
     this->database.transaction();
     query.exec();
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+    if (!this->database.commit()) {
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+        this->database.rollback();
         return false;
+    }
     return true;
+}
 bool Database::transaction(QList<QSqlQuery> &queries) {
     this->database.transaction();
     QSqlQuery q;
     for (int var = 0; var < queries.size(); ++var) {
         q = queries.at(var);
         q.exec();
+    }
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+    if (!this->database.commit()) {
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+        this->database.rollback();
         return false;
+    }
     return true;
+}
 bool Database::exec(QString query) {
     this->database.transaction();
     QSqlQuery q = QSqlQuery(this->database);
     q.exec(query);
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+    if (!this->database.commit()) {
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+        this->database.rollback();
         return false;
+    }
     return true;
+}
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+bool Database::exec(QStringList queries) {
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+    QSqlQuery q = QSqlQuery(this->database);
     bool ok = true;
     for (int var = 0; var < queries.size() && ok; ++var) {
         ok = q.exec(queries.at(var));
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+        if (!ok) {
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+            break;
+        }
+    }
     return ok;
+}
 bool Database::exec(QSqlQuery query) {
     return query.exec();
+}
 bool Database::exec(QList<QSqlQuery> queries) {
     bool ok = true;
     QSqlQuery q = QSqlQuery(this->database);
     for (int var = 0; var < queries.size() && ok; ++var) {
         q = queries.at(var);
         ok = q.exec();
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+        if (!ok) {
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+            break;
+        }
+    }
     return ok;
+}
 bool Database::select(QSqlQuery &query) {
     query.setForwardOnly(true);
     return query.exec();
+}
 QSqlQuery Database::select(const QString &query) {
     QSqlQuery q = QSqlQuery(this->database);
     q.exec(query);
     return q;
+}
 QSqlDatabase Database::getDatabase() {
     return this->database;
+}

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