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| 1 | <?php declare(strict_types=1); |
| 2 | /* |
| 3 | * This file is part of Aplus Framework Database Library. |
| 4 | * |
| 5 | * (c) Natan Felles <natanfelles@gmail.com> |
| 6 | * |
| 7 | * For the full copyright and license information, please view the LICENSE |
| 8 | * file that was distributed with this source code. |
| 9 | */ |
| 10 | namespace Framework\Database\Definition; |
| 11 | |
| 12 | use Framework\Database\Statement; |
| 13 | use LogicException; |
| 14 | |
| 15 | /** |
| 16 | * Class AlterSchema. |
| 17 | * |
| 18 | * @see https://mariadb.com/kb/en/alter-database/ |
| 19 | * |
| 20 | * @package database |
| 21 | */ |
| 22 | class AlterSchema extends Statement |
| 23 | { |
| 24 | /** |
| 25 | * @param string $schemaName |
| 26 | * |
| 27 | * @return static |
| 28 | */ |
| 29 | public function schema(string $schemaName) : static |
| 30 | { |
| 31 | $this->sql['schema'] = $schemaName; |
| 32 | return $this; |
| 33 | } |
| 34 | |
| 35 | protected function renderSchema() : ?string |
| 36 | { |
| 37 | if ( ! isset($this->sql['schema'])) { |
| 38 | return null; |
| 39 | } |
| 40 | $schema = $this->sql['schema']; |
| 41 | if (isset($this->sql['upgrade'])) { |
| 42 | $schema = "#mysql50#{$schema}"; |
| 43 | } |
| 44 | return ' ' . $this->database->protectIdentifier($schema); |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * @param string $charset |
| 49 | * |
| 50 | * @return static |
| 51 | */ |
| 52 | public function charset(string $charset) : static |
| 53 | { |
| 54 | $this->sql['charset'] = $charset; |
| 55 | return $this; |
| 56 | } |
| 57 | |
| 58 | protected function renderCharset() : ?string |
| 59 | { |
| 60 | if ( ! isset($this->sql['charset'])) { |
| 61 | return null; |
| 62 | } |
| 63 | $charset = $this->database->quote($this->sql['charset']); |
| 64 | return " CHARACTER SET = {$charset}"; |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * @param string $collation |
| 69 | * |
| 70 | * @return static |
| 71 | */ |
| 72 | public function collate(string $collation) : static |
| 73 | { |
| 74 | $this->sql['collation'] = $collation; |
| 75 | return $this; |
| 76 | } |
| 77 | |
| 78 | protected function renderCollate() : ?string |
| 79 | { |
| 80 | if ( ! isset($this->sql['collation'])) { |
| 81 | return null; |
| 82 | } |
| 83 | $collation = $this->database->quote($this->sql['collation']); |
| 84 | return " COLLATE = {$collation}"; |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * @return static |
| 89 | */ |
| 90 | public function upgrade() : static |
| 91 | { |
| 92 | $this->sql['upgrade'] = true; |
| 93 | return $this; |
| 94 | } |
| 95 | |
| 96 | protected function renderUpgrade() : ?string |
| 97 | { |
| 98 | if ( ! isset($this->sql['upgrade'])) { |
| 99 | return null; |
| 100 | } |
| 101 | if (isset($this->sql['charset']) || isset($this->sql['collation'])) { |
| 102 | throw new LogicException( |
| 103 | 'UPGRADE DATA DIRECTORY NAME can not be used with CHARACTER SET or COLLATE' |
| 104 | ); |
| 105 | } |
| 106 | return ' UPGRADE DATA DIRECTORY NAME'; |
| 107 | } |
| 108 | |
| 109 | protected function checkSpecifications() : void |
| 110 | { |
| 111 | if ( ! isset($this->sql['charset']) |
| 112 | && ! isset($this->sql['collation']) |
| 113 | && ! isset($this->sql['upgrade']) |
| 114 | ) { |
| 115 | throw new LogicException( |
| 116 | 'ALTER SCHEMA must have a specification' |
| 117 | ); |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | public function sql() : string |
| 122 | { |
| 123 | $sql = 'ALTER SCHEMA'; |
| 124 | $sql .= $this->renderSchema() . \PHP_EOL; |
| 125 | $part = $this->renderCharset(); |
| 126 | if ($part) { |
| 127 | $sql .= $part . \PHP_EOL; |
| 128 | } |
| 129 | $part = $this->renderCollate(); |
| 130 | if ($part) { |
| 131 | $sql .= $part . \PHP_EOL; |
| 132 | } |
| 133 | $part = $this->renderUpgrade(); |
| 134 | if ($part) { |
| 135 | $sql .= $part . \PHP_EOL; |
| 136 | } |
| 137 | $this->checkSpecifications(); |
| 138 | return $sql; |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * Runs the ALTER SCHEMA statement. |
| 143 | * |
| 144 | * @return int|string The number of affected rows |
| 145 | */ |
| 146 | public function run() : int|string |
| 147 | { |
| 148 | return $this->database->exec($this->sql()); |
| 149 | } |
| 150 | } |