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| Name | Lines | Functions and Methods | CRAP | Classes and Traits | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| MySqlSchemaGrammar | 100.00% | 47 / 47 | 100.00% | 12 / 12 | 30 | 100.00% | 1 / 1 | |||
| wrap | 100.00% | 1 / 1 | 100.00% | 1 / 1 | 1 | |||||
| type | 100.00% | 15 / 15 | 100.00% | 1 / 1 | 17 | |||||
| autoIncrement | 100.00% | 1 / 1 | 100.00% | 1 / 1 | 1 | |||||
| compileDropIndex | 100.00% | 2 / 2 | 100.00% | 1 / 1 | 1 | |||||
| compileDropColumn | 100.00% | 1 / 1 | 100.00% | 1 / 1 | 1 | |||||
| compileSetColumnDefault | 100.00% | 2 / 2 | 100.00% | 1 / 1 | 1 | |||||
| compileDropColumnDefault | 100.00% | 1 / 1 | 100.00% | 1 / 1 | 1 | |||||
| compileModifyColumn | 100.00% | 9 / 9 | 100.00% | 1 / 1 | 2 | |||||
| compileAddForeignKey | 100.00% | 3 / 3 | 100.00% | 1 / 1 | 1 | |||||
| compileDropForeignKey | 100.00% | 2 / 2 | 100.00% | 1 / 1 | 1 | |||||
| compileAddCheck | 100.00% | 3 / 3 | 100.00% | 1 / 1 | 1 | |||||
| assertValidIdentifier | 100.00% | 7 / 7 | 100.00% | 1 / 1 | 2 | |||||
| 1 | <?php | |
| 2 | ||
| 3 | declare(strict_types=1); | |
| 4 | ||
| 5 | namespace BlueprintAU\Radiant\Database\Schema\Grammars; | |
| 6 | ||
| 7 | use BlueprintAU\Radiant\Database\Schema\Blueprint; | |
| 8 | use BlueprintAU\Radiant\Database\Schema\Enums\ColumnType; | |
| 9 | ||
| 10 | /** | |
| 11 | * The MySQL dialect of the schema grammar. | |
| 12 | * | |
| 13 | * Identifiers are quoted with backticks (embedded backticks doubled). | |
| 14 | * Auto-increment renders as `AUTO_INCREMENT`; MySQL supports dropping | |
| 15 | * columns natively. | |
| 16 | */ | |
| 17 | final class MySqlSchemaGrammar extends SchemaGrammar | |
| 18 | { | |
| 19 | /** | |
| 20 | * Wrap an identifier in MySQL backticks. | |
| 21 | * | |
| 22 | * @param string $value | |
| 23 | * @return string | |
| 24 | */ | |
| 25 | protected function wrap(string $value): string | |
| 26 | { | |
| 27 | return '`' . str_replace('`', '``', $value) . '`'; | |
| 28 | } | |
| 29 | ||
| 30 | /** | |
| 31 | * Map a logical column type to MySQL's native type. | |
| 32 | * | |
| 33 | * Datetime types render fractional seconds when a precision is declared | |
| 34 | * (`datetime(3)`); MySQL 5.6.4+ stores the declared digits natively. | |
| 35 | * | |
| 36 | * @param ColumnType $type | |
| 37 | * @param int|null $length | |
| 38 | * @param int|null $precision | |
| 39 | * @param int|null $scale | |
| 40 | * @return string | |
| 41 | */ | |
| 42 | public function type(ColumnType $type, ?int $length = null, ?int $precision = null, ?int $scale = null): string | |
| 43 | { | |
| 44 | return match ($type) { | |
| 45 | ColumnType::String => 'varchar' . $this->suffix($this->requireLength($length)), | |
| 46 | ColumnType::Char => 'char' . $this->suffix($this->requireLength($length)), | |
| 47 | ColumnType::Text => 'text', | |
| 48 | ColumnType::BigInt => 'bigint', | |
| 49 | ColumnType::Int => 'int', | |
| 50 | ColumnType::Decimal => 'decimal' . $this->suffix($precision, $scale), | |
| 51 | ColumnType::Float => 'double', | |
| 52 | ColumnType::Boolean => 'tinyint(1)', | |
| 53 | ColumnType::Date => 'date', | |
| 54 | ColumnType::DateTime => 'datetime' . $this->suffix($precision), | |
| 55 | ColumnType::Timestamp => 'timestamp' . $this->suffix($precision), | |
| 56 | ColumnType::Json => 'json', | |
| 57 | ColumnType::Enum => 'varchar' . $this->suffix($this->requireLength($length)), | |
| 58 | ColumnType::Binary => $length === null ? 'blob' : 'varbinary' . $this->suffix($length), | |
| 59 | ColumnType::Uuid => 'char(36)', | |
| 60 | }; | |
| 61 | } | |
| 62 | ||
| 63 | /** | |
| 64 | * The MySQL auto-increment clause. | |
| 65 | * | |
| 66 | * @return string | |
| 67 | */ | |
| 68 | protected function autoIncrement(): string | |
| 69 | { | |
| 70 | return 'AUTO_INCREMENT'; | |
| 71 | } | |
| 72 | ||
| 73 | /** | |
| 74 | * MySQL has NO partial (filtered) indexes, NO NULLS NOT DISTINCT, and | |
| 75 | * NO DEFERRABLE foreign keys — the base clause hooks throw, and MySQL | |
| 76 | * overrides none of them, so declaring any of those options fails | |
| 77 | * fast at compile time (Postgres — and for partial indexes SQLite — | |
| 78 | * render them). | |
| 79 | */ | |
| 80 | ||
| 81 | /** | |
| 82 | * MySQL drops an index relative to its table: `ALTER TABLE … DROP INDEX`. | |
| 83 | * | |
| 84 | * @param string $name | |
| 85 | * @param string $table | |
| 86 | * @return string | |
| 87 | */ | |
| 88 | public function compileDropIndex(string $name, string $table): string | |
| 89 | { | |
| 90 | $this->assertValidIdentifier($name); | |
| 91 | ||
| 92 | return 'ALTER TABLE ' . $this->wrap($table) . ' DROP INDEX ' . $this->wrap($name); | |
| 93 | } | |
| 94 | ||
| 95 | /** | |
| 96 | * Compile one column's `DROP COLUMN` clause. | |
| 97 | * | |
| 98 | * @param string $column | |
| 99 | * @return string | |
| 100 | */ | |
| 101 | protected function compileDropColumn(string $column): string | |
| 102 | { | |
| 103 | return $this->wrap($column); | |
| 104 | } | |
| 105 | ||
| 106 | /** | |
| 107 | * Compile the statement that restores a column's declared default. | |
| 108 | * | |
| 109 | * @param string $table | |
| 110 | * @param string $column | |
| 111 | * @param mixed $default A scalar or an Expression. | |
| 112 | * @return string | |
| 113 | */ | |
| 114 | #[\Override] | |
| 115 | protected function compileSetColumnDefault(string $table, string $column, mixed $default): string | |
| 116 | { | |
| 117 | return 'ALTER TABLE ' . $this->wrap($table) . ' ALTER COLUMN ' . $this->wrap($column) | |
| 118 | . ' SET DEFAULT ' . $this->compileDefault($default); | |
| 119 | } | |
| 120 | ||
| 121 | /** | |
| 122 | * Compile the statement that drops a column's temporary default. | |
| 123 | * | |
| 124 | * @param string $table | |
| 125 | * @param string $column | |
| 126 | * @return string | |
| 127 | */ | |
| 128 | #[\Override] | |
| 129 | protected function compileDropColumnDefault(string $table, string $column): string | |
| 130 | { | |
| 131 | return 'ALTER TABLE ' . $this->wrap($table) . ' ALTER COLUMN ' . $this->wrap($column) . ' DROP DEFAULT'; | |
| 132 | } | |
| 133 | ||
| 134 | /** | |
| 135 | * Compile an `ALTER TABLE ... MODIFY COLUMN` statement — MySQL's | |
| 136 | * in-place content-drift form. | |
| 137 | * | |
| 138 | * @param Blueprint $blueprint | |
| 139 | * @return list<string> | |
| 140 | */ | |
| 141 | public function compileModifyColumn(Blueprint $blueprint): array | |
| 142 | { | |
| 143 | $table = $blueprint->getTable(); | |
| 144 | $columns = $blueprint->getColumns(); | |
| 145 | if ($columns === []) { | |
| 146 | throw new \InvalidArgumentException('Cannot modify columns with no columns defined.'); | |
| 147 | } | |
| 148 | ||
| 149 | return array_map( | |
| 150 | fn (array $column): string => 'ALTER TABLE ' . $this->wrap($table) | |
| 151 | . ' MODIFY ' . $this->compileColumnDefinition($column), | |
| 152 | $columns, | |
| 153 | ); | |
| 154 | } | |
| 155 | ||
| 156 | /** | |
| 157 | * Compile an `ALTER TABLE ... ADD CONSTRAINT ... FOREIGN KEY` | |
| 158 | * statement — MySQL's in-place FK-add form. | |
| 159 | * | |
| 160 | * @param string $table | |
| 161 | * @param array{columns: list<string>, references: list<string>, onDelete: \BlueprintAU\Radiant\Database\Schema\Enums\ForeignKeyAction|null, onUpdate: \BlueprintAU\Radiant\Database\Schema\Enums\ForeignKeyAction|null, deferrable: bool, initiallyDeferred: bool} $foreignKey | |
| 162 | * @param string $name | |
| 163 | * @return string | |
| 164 | */ | |
| 165 | public function compileAddForeignKey(string $table, array $foreignKey, string $name): string | |
| 166 | { | |
| 167 | $this->assertValidIdentifier($name); | |
| 168 | ||
| 169 | return 'ALTER TABLE ' . $this->wrap($table) . ' ADD CONSTRAINT ' . $this->wrap($name) . ' ' | |
| 170 | . $this->compileForeignKeyConstraint($foreignKey); | |
| 171 | } | |
| 172 | ||
| 173 | /** | |
| 174 | * Compile an `ALTER TABLE ... DROP FOREIGN KEY` statement — MySQL's | |
| 175 | * in-place FK-drop form. | |
| 176 | * | |
| 177 | * @param string $table | |
| 178 | * @param string $name | |
| 179 | * @return string | |
| 180 | */ | |
| 181 | public function compileDropForeignKey(string $table, string $name): string | |
| 182 | { | |
| 183 | $this->assertValidIdentifier($name); | |
| 184 | ||
| 185 | return 'ALTER TABLE ' . $this->wrap($table) . ' DROP FOREIGN KEY ' . $this->wrap($name); | |
| 186 | } | |
| 187 | ||
| 188 | /** | |
| 189 | * Compile an `ALTER TABLE ... ADD CONSTRAINT ... CHECK` statement — | |
| 190 | * MySQL's in-place CHECK-add form. | |
| 191 | * | |
| 192 | * @param string $table | |
| 193 | * @param string $name | |
| 194 | * @param string $expression | |
| 195 | * @return string | |
| 196 | */ | |
| 197 | public function compileAddCheck(string $table, string $name, string $expression): string | |
| 198 | { | |
| 199 | $this->assertValidIdentifier($name); | |
| 200 | ||
| 201 | return 'ALTER TABLE ' . $this->wrap($table) . ' ADD CONSTRAINT ' . $this->wrap($name) | |
| 202 | . ' CHECK (' . $expression . ')'; | |
| 203 | } | |
| 204 | ||
| 205 | /** | |
| 206 | * MySQL caps identifiers at 64 characters — fail fast at compile | |
| 207 | * time, never silently truncate. | |
| 208 | * | |
| 209 | * @param string $name | |
| 210 | * @return void | |
| 211 | * @throws \InvalidArgumentException | |
| 212 | */ | |
| 213 | public function assertValidIdentifier(string $name): void | |
| 214 | { | |
| 215 | if (strlen($name) > 64) { | |
| 216 | throw new \InvalidArgumentException(sprintf( | |
| 217 | 'Identifier [%s] exceeds MySQL\'s 64-character limit (%d chars); ' | |
| 218 | . 'declare a shorter #[Unique(name: ...)] / #[Index(name: ...)].', | |
| 219 | $name, | |
| 220 | strlen($name), | |
| 221 | )); | |
| 222 | } | |
| 223 | } | |
| 224 | } |