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| Rev | Author | Line No. | Line |
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| 502 | daniel-mar | 1 | <?php |
| 2 | |||
| 3 | /* |
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| 4 | * OIDplus 2.0 |
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| 5 | * Copyright 2019 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 | |||
| 20 | class OIDplusSqlSlangPluginAccess extends OIDplusSqlSlangPlugin { |
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| 21 | |||
| 22 | public static function id(): string { |
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| 23 | return 'access'; |
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| 24 | } |
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| 25 | |||
| 26 | public function natOrder($fieldname, $order='asc'): string { |
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| 27 | |||
| 28 | // TODO: Implement |
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| 29 | return "$fieldname $order"; |
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| 30 | |||
| 31 | } |
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| 32 | |||
| 33 | public function sqlDate(): string { |
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| 34 | return 'date()'; |
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| 35 | } |
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| 36 | |||
| 37 | public function detect(OIDplusDatabaseConnection $db): bool { |
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| 38 | /* |
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| 39 | if ($tables = @odbc_tables($db->conn)) { |
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| 40 | while ($row = @odbc_fetch_array($tables)) { |
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| 41 | if (($row['TABLE_NAME'] == 'MSysACEs') || |
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| 42 | ($row['TABLE_NAME'] == 'MSysObjects') || |
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| 43 | ($row['TABLE_NAME'] == 'MSysQueries') || |
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| 44 | ($row['TABLE_NAME'] == 'MSysRelationships')) |
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| 45 | { |
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| 46 | return true; |
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| 47 | } |
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| 48 | } |
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| 49 | } |
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| 50 | return false; |
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| 51 | */ |
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| 52 | |||
| 53 | $err_a = ''; |
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| 54 | try { |
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| 55 | // On this table, there are often no read permissions, so we need to find out if the error message is different |
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| 56 | $db->query("select * from MSysObjects"); |
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| 57 | } catch (Exception $e) { |
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| 58 | $err_a = $db->error(); |
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| 59 | } |
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| 60 | $err_a = str_replace('MSysObjects', '', $err_a); |
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| 61 | |||
| 62 | $err_b = ''; |
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| 63 | try { |
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| 64 | $db->query("select * from XYZObjects"); |
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| 65 | } catch (Exception $e) { |
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| 66 | $err_b = $db->error(); |
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| 67 | } |
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| 68 | $err_b = str_replace('XYZObjects', '', $err_b); |
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| 69 | |||
| 70 | return (!empty($err_a) && !empty($err_b) && ($err_a != $err_b)); |
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| 71 | } |
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| 72 | |||
| 73 | public function insert_id(OIDplusDatabaseConnection $db): int { |
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| 74 | $res = $db->query("SELECT @@IDENTITY AS ID"); |
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| 75 | $row = $res->fetch_array(); |
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| 76 | return (int)$row['ID']; |
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| 77 | } |
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| 78 | |||
| 79 | public function setupSetTablePrefix($cont, $table, $prefix): string { |
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| 80 | $cont = str_replace('['.$table.']', '['.$prefix.$table.']', $cont); |
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| 81 | $cont = str_replace('PK_'.$table, 'PK_'.$prefix.$table, $cont); |
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| 82 | $cont = str_replace('IX_'.$table, 'PK_'.$prefix.$table, $cont); |
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| 83 | return $cont; |
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| 84 | } |
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| 85 | |||
| 86 | public function setupCreateDbIfNotExists($database): string { |
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| 87 | return ""; |
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| 88 | } |
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| 89 | |||
| 90 | public function setupUseDatabase($database): string { |
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| 91 | return ""; |
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| 92 | } |
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| 93 | |||
| 94 | public function isNullFunction($expr1, $expr2): string { |
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| 95 | return "iif($expr1 is null, $expr2, $expr1)"; |
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| 96 | } |
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| 97 | |||
| 98 | public function filterQuery($sql): string { |
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| 99 | // value => [value] |
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| 100 | $sql = preg_replace('@\\b(value)\\b@i', '[\\1]', $sql); |
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| 101 | |||
| 102 | // This function does following: |
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| 103 | // Input: select * from T left join X on ... left join Y on ... left join Z on ... |
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| 104 | // Output: select * from ((T left join X on ...) left join Y on ...) left join Z on ... |
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| 105 | $ary = preg_split("@\\bunion\\b@i", $sql); |
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| 106 | foreach ($ary as &$x) { |
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| 107 | $INVALIDATE_SEQUENCE = '~X~X~X~X~X~X'; |
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| 108 | $REGEX_JOIN = '(?<!'.$INVALIDATE_SEQUENCE.')(left|right|full|inner)\\s+(outer\\s+){0,1}join'; |
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| 109 | do { |
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| 110 | $count = 0; |
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| 111 | $x = preg_replace("@from\\s+(.+)\\s+(".$REGEX_JOIN.")\\s+(.+)(".$REGEX_JOIN.")@ismU", |
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| 112 | 'from (\1 '.$INVALIDATE_SEQUENCE.'\2 \5) \6', $x, 1, $count); |
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| 113 | } while ($count > 0); |
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| 114 | $x = str_replace($INVALIDATE_SEQUENCE,'',$x); |
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| 115 | } |
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| 116 | $sql = implode(' union ', $ary); |
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| 117 | return $sql; |
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| 118 | } |
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| 119 | |||
| 120 | public function getSQLBool($bool): string { |
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| 121 | return $bool ? '-1' : '0'; |
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| 122 | } |
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| 507 | daniel-mar | 123 | |
| 124 | public function escapeString($str): string { |
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| 125 | return str_replace("'", "''", $str); |
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| 126 | } |
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| 127 | } |