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783 | daniel-mar | 1 | <?php |
2 | |||
3 | /* |
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4 | * OIDplus 2.0 |
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1086 | daniel-mar | 5 | * Copyright 2019 - 2023 Daniel Marschall, ViaThinkSoft |
783 | daniel-mar | 6 | * |
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; |
783 | daniel-mar | 21 | |
1086 | daniel-mar | 22 | // phpcs:disable PSR1.Files.SideEffects |
23 | \defined('INSIDE_OIDPLUS') or die; |
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24 | // phpcs:enable PSR1.Files.SideEffects |
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25 | |||
783 | daniel-mar | 26 | class OIDplusSqlSlangPluginOracle extends OIDplusSqlSlangPlugin { |
27 | |||
1116 | daniel-mar | 28 | /** |
29 | * @return string |
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30 | */ |
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783 | daniel-mar | 31 | public static function id(): string { |
32 | return 'oracle'; |
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33 | } |
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34 | |||
1116 | daniel-mar | 35 | /** |
36 | * @param string $fieldname |
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37 | * @param string $order |
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38 | * @return string |
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39 | * @throws OIDplusException |
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40 | */ |
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41 | public function natOrder(string $fieldname, string $order='asc'): string { |
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783 | daniel-mar | 42 | |
43 | $order = strtolower($order); |
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44 | if (($order != 'asc') && ($order != 'desc')) { |
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45 | throw new OIDplusException(_L('Invalid order "%1" (needs to be "asc" or "desc")',$order)); |
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46 | } |
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47 | |||
48 | $out = array(); |
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49 | |||
50 | $max_arc_len = OIDplus::baseConfig()->getValue('LIMITS_MAX_OID_ARC_SIZE') > 65 ? 65 : OIDplus::baseConfig()->getValue('LIMITS_MAX_OID_ARC_SIZE'); // Limit of "decimal()" type |
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51 | |||
52 | // 1. sort by namespace (oid, guid, ...) |
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53 | $out[] = "regexp_substr($fieldname, '(.*?)(:|\$)', 1, 1, NULL, 1) $order"; |
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54 | |||
55 | // 2. sort by first arc (0,1,2) |
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56 | $tmp = "regexp_substr($fieldname, '(.*?)(:|\$)', 1, 2, NULL, 1)"; |
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57 | $i = 1; |
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58 | $out[] = "lpad(regexp_substr($tmp, '(.*?)(\\.|\$)', 1, $i, NULL, 1),$max_arc_len,'0') $order"; |
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59 | |||
60 | for ($i=2; $i<=OIDplus::baseConfig()->getValue('LIMITS_MAX_OID_DEPTH'); $i++) { |
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61 | // 3. Sort by the rest arcs one by one, not that MySQL can only handle decimal(65), not decimal($max_arc_len) |
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62 | $out[] = "lpad(regexp_substr($fieldname, '(.*?)(\\.|\$)', 1, $i, NULL, 1),$max_arc_len,'0') $order"; |
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63 | } |
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64 | |||
65 | // 4. as last resort, sort by the identifier itself, e.g. if the casts above did fail (happens if it is not an OID) |
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66 | $out[] = "$fieldname $order"; |
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67 | |||
68 | return implode(', ', $out); |
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69 | |||
70 | } |
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71 | |||
1116 | daniel-mar | 72 | /** |
73 | * @return string |
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74 | */ |
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783 | daniel-mar | 75 | public function sqlDate(): string { |
76 | return 'SYSDATE'; |
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77 | } |
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78 | |||
1116 | daniel-mar | 79 | /** |
80 | * @param OIDplusDatabaseConnection $db |
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81 | * @return bool |
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82 | */ |
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783 | daniel-mar | 83 | public function detect(OIDplusDatabaseConnection $db): bool { |
84 | try { |
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85 | $vers = $db->query("SELECT banner FROM v\$version WHERE banner LIKE 'Oracle%'")->fetch_object()->banner; |
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86 | $vers = strtolower($vers); |
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87 | return (strpos($vers, 'oracle') !== false); |
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1050 | daniel-mar | 88 | } catch (\Exception $e) { |
783 | daniel-mar | 89 | return false; |
90 | } |
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91 | } |
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92 | |||
1116 | daniel-mar | 93 | /** |
94 | * @var ?string |
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95 | */ |
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783 | daniel-mar | 96 | private $last_insert_table = null; |
97 | |||
1116 | daniel-mar | 98 | /** |
99 | * @param OIDplusDatabaseConnection $db |
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100 | * @return int |
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101 | * @throws OIDplusException |
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102 | */ |
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783 | daniel-mar | 103 | public function insert_id(OIDplusDatabaseConnection $db): int { |
104 | if (!$this->last_insert_table) return 0; |
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105 | $res = $db->query("select sequence_name from user_tab_identity_cols where table_name = '".strtoupper($this->last_insert_table)."'"); |
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106 | $row = $res->fetch_array(); |
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107 | |||
108 | if (!isset($row['sequence_name'])) return 0; |
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109 | $res = $db->query("select ".$row['sequence_name'].".currval from dual"); |
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110 | $row = $res->fetch_array(); |
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111 | return (int)$row['CURRVAL']; |
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112 | } |
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113 | |||
1116 | daniel-mar | 114 | /** |
115 | * @param string $cont |
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116 | * @param string $table |
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117 | * @param string $prefix |
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118 | * @return string |
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119 | */ |
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120 | public function setupSetTablePrefix(string $cont, string $table, string $prefix): string { |
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788 | daniel-mar | 121 | $table = strtoupper($table); |
122 | $prefix = strtoupper($prefix); |
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783 | daniel-mar | 123 | $cont = str_replace('"'.$table.'"', '"'.$prefix.$table.'"', $cont); |
124 | return $cont; |
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125 | } |
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126 | |||
1116 | daniel-mar | 127 | /** |
128 | * @param string $database |
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129 | * @return string |
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130 | */ |
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131 | public function setupCreateDbIfNotExists(string $database): string { |
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783 | daniel-mar | 132 | // TODO! Implement |
133 | return ""; |
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134 | } |
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135 | |||
1116 | daniel-mar | 136 | /** |
137 | * @param string $database |
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138 | * @return string |
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139 | */ |
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140 | public function setupUseDatabase(string $database): string { |
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783 | daniel-mar | 141 | // TODO! Implement |
142 | return ""; |
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143 | } |
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144 | |||
1116 | daniel-mar | 145 | /** |
146 | * @param string $expr1 |
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147 | * @param string $expr2 |
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148 | * @return string |
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149 | */ |
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150 | public function isNullFunction(string $expr1, string $expr2): string { |
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783 | daniel-mar | 151 | // Test via "SELECT NVL(null, 'foo') FROM DUAL;" |
152 | return "NVL($expr1, $expr2)"; |
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153 | } |
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154 | |||
1116 | daniel-mar | 155 | /** |
156 | * @param string $sql |
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157 | * @return string |
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158 | */ |
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159 | public function filterQuery(string $sql): string { |
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783 | daniel-mar | 160 | |
161 | // "select 1" is not valid. You need to add "from dual" |
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162 | if ((stripos($sql,'select') !== false) && (stripos($sql,'from') === false)) { |
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163 | $sql .= ' from dual'; |
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164 | } |
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165 | |||
787 | daniel-mar | 166 | // SQL-Queries MUST NOT end with a ";", otherwise error "SQL command not property ended" |
167 | $sql = rtrim(trim($sql), "; \n\r\t\v\x00"); |
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168 | // SQL/PL-Programs MUST end with a ";" |
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169 | if (strtolower(substr($sql,-3)) == 'end') $sql .= ';'; |
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783 | daniel-mar | 170 | |
171 | // Dirty hack!!! We need the name of the last inserted table so that insert_id() |
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172 | // works. This is a dirty hack, because the invokation of filterQuery() does |
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173 | // not guarantee that the query was actually executed... |
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174 | if (preg_match("@insert into (.+) @ismU", $sql, $m)) { |
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175 | $this->last_insert_table = $m[1]; |
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176 | } else { |
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177 | $this->last_insert_table = null; |
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178 | } |
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179 | |||
180 | // Comment is a keyword and cannot be used as column name |
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1116 | daniel-mar | 181 | return str_ireplace('comment', '"COMMENT"', $sql); |
783 | daniel-mar | 182 | } |
183 | |||
1116 | daniel-mar | 184 | /** |
185 | * @param bool $bool |
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186 | * @return string |
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187 | */ |
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188 | public function getSQLBool(bool $bool): string { |
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783 | daniel-mar | 189 | return $bool ? '1' : '0'; |
190 | } |
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191 | |||
1116 | daniel-mar | 192 | /** |
193 | * @param string $str |
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194 | * @return string |
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195 | */ |
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196 | public function escapeString(string $str): string { |
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783 | daniel-mar | 197 | return str_replace("'", "''", $str); |
198 | } |
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199 | } |