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| Rev | Author | Line No. | Line |
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| 360 | daniel-mar | 1 | <?php |
| 2 | |||
| 3 | /* |
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| 4 | * OIDplus 2.0 |
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| 511 | daniel-mar | 5 | * Copyright 2019 - 2021 Daniel Marschall, ViaThinkSoft |
| 360 | 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 | |||
| 511 | daniel-mar | 20 | if (!defined('INSIDE_OIDPLUS')) die(); |
| 21 | |||
| 360 | daniel-mar | 22 | class OIDplusSqlSlangPluginSQLite extends OIDplusSqlSlangPlugin { |
| 23 | |||
| 24 | public static function id(): string { |
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| 25 | return 'sqlite'; |
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| 26 | } |
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| 27 | |||
| 28 | public function natOrder($fieldname, $order='asc'): string { |
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| 29 | |||
| 30 | $order = strtolower($order); |
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| 31 | if (($order != 'asc') && ($order != 'desc')) { |
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| 32 | throw new OIDplusException(_L('Invalid order "%1" (needs to be "asc" or "desc")',$order)); |
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| 33 | } |
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| 34 | |||
| 35 | $out = array(); |
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| 36 | |||
| 37 | // If the SQLite database is accessed through the SQLite3 plugin, |
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| 38 | // we use an individual collation, therefore OIDplusDatabasePluginSQLite3 overrides |
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| 39 | // natOrder(). |
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| 40 | // If we connected to SQLite using ODBC or PDO, we need to do something else, |
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| 41 | // but that solution is complex, slow and wrong (since it does not support |
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| 42 | // UUIDs etc.) |
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| 43 | |||
| 44 | $max_depth = OIDplus::baseConfig()->getValue('LIMITS_MAX_OID_DEPTH'); |
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| 45 | if ($max_depth > 11) $max_depth = 11; // SQLite3 will crash if max depth > 11 (parser stack overflow); (TODO: can we do something else?!?!) |
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| 46 | |||
| 47 | // 1. sort by namespace (oid, guid, ...) |
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| 48 | $out[] = "substr($fieldname,0,instr($fieldname,':')) $order"; |
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| 49 | |||
| 50 | // 2. Sort by the rest arcs one by one |
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| 51 | for ($i=1; $i<=$max_depth; $i++) { |
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| 52 | if ($i==1) { |
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| 53 | $arc = "substr($fieldname,5)||'.'"; |
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| 54 | $fieldname = $arc; |
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| 55 | $arc = "substr($arc,0,instr($arc,'.'))"; |
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| 56 | $out[] = "cast($arc as integer) $order"; |
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| 57 | } else { |
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| 58 | $arc = "ltrim(ltrim($fieldname,'0123456789'),'.')"; |
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| 59 | $fieldname = $arc; |
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| 60 | $arc = "substr($arc,0,instr($arc,'.'))"; |
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| 61 | $out[] = "cast($arc as integer) $order"; |
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| 62 | } |
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| 63 | } |
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| 64 | |||
| 65 | // 3. as last resort, sort by the identifier itself, e.g. if the function getOidArc always return 0 (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 | |||
| 72 | public function sqlDate(): string { |
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| 73 | return 'datetime()'; |
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| 74 | } |
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| 75 | |||
| 76 | public function detect(OIDplusDatabaseConnection $db): bool { |
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| 77 | try { |
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| 386 | daniel-mar | 78 | $db->query("select sqlite_version as dbms_version"); |
| 79 | return true; |
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| 360 | daniel-mar | 80 | } catch (Exception $e) { |
| 81 | return false; |
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| 82 | } |
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| 83 | } |
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| 84 | |||
| 85 | public function insert_id(OIDplusDatabaseConnection $db): int { |
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| 86 | $res = $db->query("SELECT last_insert_rowid() AS ID"); |
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| 87 | $row = $res->fetch_array(); |
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| 88 | return (int)$row['ID']; |
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| 89 | } |
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| 90 | |||
| 91 | public function setupSetTablePrefix($cont, $table, $prefix): string { |
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| 92 | $cont = str_replace('`'.$table.'`', '`'.$prefix.$table.'`', $cont); |
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| 93 | return $cont; |
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| 94 | } |
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| 95 | |||
| 96 | public function setupCreateDbIfNotExists($database): string { |
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| 97 | return ""; |
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| 98 | } |
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| 99 | |||
| 100 | public function setupUseDatabase($database): string { |
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| 101 | return ""; |
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| 102 | } |
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| 433 | daniel-mar | 103 | |
| 104 | public function isNullFunction($expr1, $expr2): string { |
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| 105 | return "ifnull($expr1, $expr2)"; |
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| 106 | } |
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| 502 | daniel-mar | 107 | |
| 108 | public function filterQuery($sql): string { |
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| 109 | return $sql; |
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| 110 | } |
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| 111 | |||
| 112 | public function getSQLBool($bool): string { |
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| 113 | return $bool ? '1' : '0'; |
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| 114 | } |
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| 507 | daniel-mar | 115 | |
| 116 | public function escapeString($str): string { |
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| 117 | return str_replace("'", "''", $str); |
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| 118 | } |
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| 119 | } |