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1 /**
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2 * Palantir - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012 Medical Physics Department, CHU of Liege,
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4 * Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * This program is distributed in the hope that it will be useful, but
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12 * WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 * General Public License for more details.
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15 *
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16 * You should have received a copy of the GNU General Public License
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17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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18 **/
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19
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20
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21 #pragma once
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22
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23 #include "Connection.h"
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24
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25 namespace Palantir
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26 {
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27 namespace SQLite
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28 {
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29 class Transaction : public boost::noncopyable
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30 {
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31 private:
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32 Connection& connection_;
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33
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34 // True when the transaction is open, false when it's already been committed
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35 // or rolled back.
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36 bool isOpen_;
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37
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38 public:
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39 explicit Transaction(Connection& connection);
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40 ~Transaction();
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41
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42 // Returns true when there is a transaction that has been successfully begun.
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43 bool IsOpen() const { return isOpen_; }
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44
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45 // Begins the transaction. This uses the default sqlite "deferred" transaction
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46 // type, which means that the DB lock is lazily acquired the next time the
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47 // database is accessed, not in the begin transaction command.
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48 void Begin();
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49
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50 // Rolls back the transaction. This will happen automatically if you do
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51 // nothing when the transaction goes out of scope.
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52 void Rollback();
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53
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54 // Commits the transaction, returning true on success.
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55 void Commit();
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56 };
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57 }
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58 }
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