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635 | daniel-mar | 1 | <?php |
2 | |||
3 | /* |
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4 | * OIDplus 2.0 |
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5 | * Copyright 2019 - 2021 Daniel Marschall, ViaThinkSoft |
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6 | * |
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7 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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8 | * you may not use this file except in compliance with the License. |
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9 | * You may obtain a copy of the License at |
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10 | * |
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11 | * http://www.apache.org/licenses/LICENSE-2.0 |
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12 | * |
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13 | * Unless required by applicable law or agreed to in writing, software |
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14 | * distributed under the License is distributed on an "AS IS" BASIS, |
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15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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16 | * See the License for the specific language governing permissions and |
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17 | * limitations under the License. |
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18 | */ |
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19 | |||
1050 | daniel-mar | 20 | namespace ViaThinkSoft\OIDplus; |
635 | daniel-mar | 21 | |
22 | class OIDplusQueryResultODBC extends OIDplusQueryResult { |
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23 | protected $no_resultset; |
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24 | protected $res; |
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25 | |||
26 | public function __construct($res) { |
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27 | $this->no_resultset = is_bool($res); |
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28 | |||
29 | if (!$this->no_resultset) { |
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30 | $this->res = $res; |
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31 | } |
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32 | } |
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33 | |||
34 | public function __destruct() { |
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35 | // odbc_close_cursor($this->res); |
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36 | } |
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37 | |||
38 | public function containsResultSet(): bool { |
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39 | return !$this->no_resultset; |
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40 | } |
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41 | |||
42 | private function num_rows_workaround(): int { |
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43 | $dummy = 0; |
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44 | |||
45 | // go to the end of the result set |
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46 | $till_eof = 0; |
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47 | while ($temp = odbc_fetch_into($this->res, $dummy)) $till_eof++; |
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48 | |||
49 | // reset cursor |
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50 | @odbc_fetch_row($this->res, 0); |
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51 | |||
52 | // count the rows in the result set |
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53 | $ret = 0; |
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54 | while ($temp = odbc_fetch_into($this->res, $dummy)) $ret++; |
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55 | |||
56 | // this would indicate that the odbc_fetch_row() could not reset the cursor |
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57 | if ($ret < $till_eof) return -1; |
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58 | |||
59 | // go back to the row were started with |
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60 | @odbc_fetch_row($this->res, $ret-$till_eof); |
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61 | |||
62 | return $ret; |
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63 | } |
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64 | |||
65 | public function num_rows(): int { |
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66 | if ($this->no_resultset) throw new OIDplusException(_L('The query has returned no result set (i.e. it was not a SELECT query)')); |
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67 | $ret = odbc_num_rows($this->res); |
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68 | |||
69 | // Workaround for drivers that do not support odbc_num_rows (e.g. Microsoft Access) |
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70 | if ($ret === -1) $ret = $this->num_rows_workaround(); |
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71 | |||
72 | if ($ret === -1) throw new OIDplusException(_L('The database driver has problems with "%1"','num_rows')); |
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73 | |||
74 | return $ret; |
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75 | } |
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76 | |||
77 | public function fetch_array()/*: ?array*/ { |
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78 | if ($this->no_resultset) throw new OIDplusException(_L('The query has returned no result set (i.e. it was not a SELECT query)')); |
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79 | $ret = odbc_fetch_array($this->res); |
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80 | if ($ret === false) $ret = null; |
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81 | if (!is_null($ret)) { |
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82 | // ODBC gives bit(1) as binary, MySQL as integer and PDO as string. |
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83 | // We'll do it like MySQL does, even if ODBC is actually more correct. |
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84 | foreach ($ret as &$value) { |
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85 | if ($value === chr(0)) $value = 0; |
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86 | if ($value === chr(1)) $value = 1; |
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87 | } |
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88 | } |
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783 | daniel-mar | 89 | |
90 | // Oracle returns $ret['VALUE'] because unquoted column-names are always upper-case |
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91 | // We can't quote every single column throughout the whole program, so we use this workaround... |
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92 | if ($ret) { |
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93 | $keys = array_keys($ret); |
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94 | foreach($keys as $key) { |
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95 | $ret[strtolower($key)]=$ret[$key]; |
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96 | $ret[strtoupper($key)]=$ret[$key]; |
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97 | } |
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98 | } |
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99 | |||
635 | daniel-mar | 100 | return $ret; |
101 | } |
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102 | |||
103 | public function fetch_object()/*: ?object*/ { |
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104 | if ($this->no_resultset) throw new OIDplusException(_L('The query has returned no result set (i.e. it was not a SELECT query)')); |
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105 | $ret = odbc_fetch_object($this->res); |
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106 | if ($ret === false) $ret = null; |
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107 | if (!is_null($ret)) { |
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108 | // ODBC gives bit(1) as binary, MySQL as integer and PDO as string. |
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109 | // We'll do it like MySQL does, even if ODBC is actually more correct. |
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861 | daniel-mar | 110 | foreach ((array)$ret as &$value) { |
635 | daniel-mar | 111 | if ($value === chr(0)) $value = 0; |
112 | if ($value === chr(1)) $value = 1; |
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113 | } |
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114 | } |
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783 | daniel-mar | 115 | |
116 | // Oracle returns $ret['VALUE'] because unquoted column-names are always upper-case |
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117 | // We can't quote every single column throughout the whole program, so we use this workaround... |
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118 | if ($ret) { |
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861 | daniel-mar | 119 | foreach ((array)$ret as $name => $val) { |
783 | daniel-mar | 120 | $ret->{strtoupper($name)} = $val; |
121 | $ret->{strtolower($name)} = $val; |
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122 | } |
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123 | } |
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124 | |||
635 | daniel-mar | 125 | return $ret; |
126 | } |
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783 | daniel-mar | 127 | } |