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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 #include "FunctionContext.h"
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22
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23 #include <sqlite3.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 FunctionContext::FunctionContext(struct sqlite3_context* context,
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30 int argc,
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31 struct ::Mem** argv)
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32 {
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33 assert(context != NULL);
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34 assert(argc >= 0);
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35 assert(argv != NULL);
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36
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37 context_ = context;
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38 argc_ = static_cast<unsigned int>(argc);
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39 argv_ = argv;
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40 }
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41
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42 void FunctionContext::CheckIndex(unsigned int index) const
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43 {
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44 if (index >= argc_)
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45 {
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46 throw PalantirException(ErrorCode_ParameterOutOfRange);
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47 }
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48 }
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49
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50 ColumnType FunctionContext::GetColumnType(unsigned int index) const
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51 {
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52 CheckIndex(index);
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53 return static_cast<SQLite::ColumnType>(sqlite3_value_type(argv_[index]));
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54 }
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55
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56 int FunctionContext::GetIntValue(unsigned int index) const
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57 {
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58 CheckIndex(index);
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59 return sqlite3_value_int(argv_[index]);
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60 }
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61
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62 double FunctionContext::GetDoubleValue(unsigned int index) const
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63 {
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64 CheckIndex(index);
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65 return sqlite3_value_double(argv_[index]);
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66 }
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67
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68 std::string FunctionContext::GetStringValue(unsigned int index) const
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69 {
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70 CheckIndex(index);
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71 return std::string(reinterpret_cast<const char*>(sqlite3_value_text(argv_[index])));
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72 }
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73
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74 void FunctionContext::SetNullResult()
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75 {
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76 sqlite3_result_null(context_);
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77 }
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78
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79 void FunctionContext::SetIntResult(int value)
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80 {
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81 sqlite3_result_int(context_, value);
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82 }
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83
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84 void FunctionContext::SetDoubleResult(double value)
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85 {
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86 sqlite3_result_double(context_, value);
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87 }
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88
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89 void FunctionContext::SetStringResult(const std::string& str)
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90 {
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91 sqlite3_result_text(context_, str.data(), str.size(), SQLITE_TRANSIENT);
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92 }
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93 }
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94 }
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