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1 /**
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2 * Orthanc - 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 * Copyright (c) 2012 The Chromium Authors. All rights reserved.
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7 *
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8 * Redistribution and use in source and binary forms, with or without
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9 * modification, are permitted provided that the following conditions are
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10 * met:
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11 *
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12 * * Redistributions of source code must retain the above copyright
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13 * notice, this list of conditions and the following disclaimer.
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14 * * Redistributions in binary form must reproduce the above
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15 * copyright notice, this list of conditions and the following disclaimer
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16 * in the documentation and/or other materials provided with the
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17 * distribution.
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18 * * Neither the name of Google Inc., the name of the CHU of Liege,
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19 * nor the names of its contributors may be used to endorse or promote
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20 * products derived from this software without specific prior written
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21 * permission.
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22 *
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23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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27 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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29 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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34 **/
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35
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36
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37 #pragma once
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38
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39 #include "Connection.h"
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40
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41 namespace Orthanc
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42 {
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43 namespace SQLite
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44 {
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45 class Transaction : public boost::noncopyable
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46 {
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47 private:
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48 Connection& connection_;
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49
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50 // True when the transaction is open, false when it's already been committed
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51 // or rolled back.
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52 bool isOpen_;
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53
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54 public:
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55 explicit Transaction(Connection& connection);
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56 ~Transaction();
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57
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58 // Returns true when there is a transaction that has been successfully begun.
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59 bool IsOpen() const { return isOpen_; }
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60
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61 // Begins the transaction. This uses the default sqlite "deferred" transaction
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62 // type, which means that the DB lock is lazily acquired the next time the
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63 // database is accessed, not in the begin transaction command.
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64 void Begin();
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65
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66 // Rolls back the transaction. This will happen automatically if you do
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67 // nothing when the transaction goes out of scope.
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68 void Rollback();
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69
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70 // Commits the transaction, returning true on success.
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71 void Commit();
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72 };
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73 }
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74 }
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