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Classes and Traits
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| Name | Lines | Functions and Methods | CRAP | Classes and Traits | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| SqliteSchemaGrammar | 96.15% | 100 / 104 | 69.23% | 9 / 13 | 44 | 0.00% | 0 / 1 | |||
| wrap | 100.00% | 1 / 1 | 100.00% | 1 / 1 | 1 | |||||
| type | 100.00% | 15 / 15 | 100.00% | 1 / 1 | 16 | |||||
| autoIncrement | 100.00% | 1 / 1 | 100.00% | 1 / 1 | 1 | |||||
| autoIncrementBeforePrimaryKey | 100.00% | 1 / 1 | 100.00% | 1 / 1 | 1 | |||||
| compilePartialIndexClause | 100.00% | 1 / 1 | 100.00% | 1 / 1 | 1 | |||||
| assertValidIdentifier | 100.00% | 1 / 1 | 100.00% | 1 / 1 | 1 | |||||
| compileDropIndex | 100.00% | 2 / 2 | 100.00% | 1 / 1 | 1 | |||||
| compileAddColumns | 93.75% | 15 / 16 | 0.00% | 0 / 1 | 4.00 | |||||
| addedNotNullWithoutDefault | 75.00% | 3 / 4 | 0.00% | 0 / 1 | 4.25 | |||||
| compileDropColumns | 88.88% | 8 / 9 | 0.00% | 0 / 1 | 2.01 | |||||
| compileDropColumn | 100.00% | 1 / 1 | 100.00% | 1 / 1 | 1 | |||||
| compileRebuildTable | 97.43% | 38 / 39 | 0.00% | 0 / 1 | 8 | |||||
| compileCopyTableWithBackfill | 100.00% | 13 / 13 | 100.00% | 1 / 1 | 3 | |||||
| 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 SQLite dialect of the schema grammar. | |
| 12 | * | |
| 13 | * Identifiers are quoted with double quotes (embedded quotes doubled). | |
| 14 | * Auto-increment renders as `AUTOINCREMENT` (only valid on an `INTEGER | |
| 15 | * PRIMARY KEY` column). SQLite 3.35+ drops columns natively, and `ALTER | |
| 16 | * TABLE` accepts a single `ADD COLUMN` clause per statement — a | |
| 17 | * multi-column add compiles one statement per column. | |
| 18 | */ | |
| 19 | final class SqliteSchemaGrammar extends SchemaGrammar | |
| 20 | { | |
| 21 | /** | |
| 22 | * Wrap an identifier in SQLite double quotes. | |
| 23 | * | |
| 24 | * @param string $value | |
| 25 | * @return string | |
| 26 | */ | |
| 27 | protected function wrap(string $value): string | |
| 28 | { | |
| 29 | return '"' . str_replace('"', '""', $value) . '"'; | |
| 30 | } | |
| 31 | ||
| 32 | /** | |
| 33 | * Map a logical column type to SQLite's native type. | |
| 34 | * | |
| 35 | * Datetime types render declared precision (`datetime(3)`) for | |
| 36 | * cross-dialect DDL parity; SQLite's type affinity ignores it, and the | |
| 37 | * driver stores whatever textual precision the bound value carries. | |
| 38 | * | |
| 39 | * @param ColumnType $type | |
| 40 | * @param int|null $length | |
| 41 | * @param int|null $precision | |
| 42 | * @param int|null $scale | |
| 43 | * @return string | |
| 44 | */ | |
| 45 | public function type(ColumnType $type, ?int $length = null, ?int $precision = null, ?int $scale = null): string | |
| 46 | { | |
| 47 | return match ($type) { | |
| 48 | ColumnType::String => 'varchar' . $this->suffix($this->requireLength($length)), | |
| 49 | ColumnType::Char => 'char' . $this->suffix($this->requireLength($length)), | |
| 50 | ColumnType::Text => 'text', | |
| 51 | ColumnType::BigInt => 'integer', | |
| 52 | ColumnType::Int => 'int', | |
| 53 | ColumnType::Decimal => 'numeric' . $this->suffix($precision, $scale), | |
| 54 | ColumnType::Float => 'double', | |
| 55 | ColumnType::Boolean => 'tinyint(1)', | |
| 56 | ColumnType::Date => 'text', | |
| 57 | ColumnType::DateTime => 'datetime' . $this->suffix($precision), | |
| 58 | ColumnType::Timestamp => 'timestamp' . $this->suffix($precision), | |
| 59 | ColumnType::Json => 'text', | |
| 60 | ColumnType::Enum => 'varchar' . $this->suffix($this->requireLength($length)), | |
| 61 | ColumnType::Binary => 'blob', | |
| 62 | ColumnType::Uuid => 'text', | |
| 63 | }; | |
| 64 | } | |
| 65 | ||
| 66 | /** | |
| 67 | * The SQLite auto-increment clause. | |
| 68 | * | |
| 69 | * @return string | |
| 70 | */ | |
| 71 | protected function autoIncrement(): string | |
| 72 | { | |
| 73 | return 'AUTOINCREMENT'; | |
| 74 | } | |
| 75 | ||
| 76 | /** | |
| 77 | * Whether the auto-increment clause renders before `PRIMARY KEY`. | |
| 78 | * | |
| 79 | * @return bool | |
| 80 | */ | |
| 81 | protected function autoIncrementBeforePrimaryKey(): bool | |
| 82 | { | |
| 83 | return false; | |
| 84 | } | |
| 85 | ||
| 86 | /** | |
| 87 | * SQLite renders partial (filtered) indexes — `CREATE INDEX ... WHERE | |
| 88 | * predicate`. | |
| 89 | * | |
| 90 | * @param string $predicate | |
| 91 | * @return string | |
| 92 | */ | |
| 93 | protected function compilePartialIndexClause(string $predicate): string | |
| 94 | { | |
| 95 | return 'WHERE ' . $predicate; | |
| 96 | } | |
| 97 | ||
| 98 | /** | |
| 99 | * SQLite has no practical identifier length cap. | |
| 100 | * | |
| 101 | * @param string $name | |
| 102 | * @return void | |
| 103 | */ | |
| 104 | public function assertValidIdentifier(string $name): void | |
| 105 | { | |
| 106 | } | |
| 107 | ||
| 108 | /** | |
| 109 | * SQLite drops an index by name alone: `DROP INDEX name`. | |
| 110 | * | |
| 111 | * @param string $name | |
| 112 | * @param string $table | |
| 113 | * @return string | |
| 114 | */ | |
| 115 | public function compileDropIndex(string $name, string $table): string | |
| 116 | { | |
| 117 | unset($table); | |
| 118 | ||
| 119 | return 'DROP INDEX ' . $this->wrap($name); | |
| 120 | } | |
| 121 | ||
| 122 | /** | |
| 123 | * Compile the `ALTER TABLE ... ADD COLUMN` statements. | |
| 124 | * | |
| 125 | * SQLite accepts a single `ADD COLUMN` clause per statement, so a | |
| 126 | * multi-column add is one statement per column. | |
| 127 | * | |
| 128 | * @param Blueprint $blueprint | |
| 129 | * @return list<string> | |
| 130 | */ | |
| 131 | #[\Override] | |
| 132 | public function compileAddColumns(Blueprint $blueprint): array | |
| 133 | { | |
| 134 | $table = $blueprint->getTable(); | |
| 135 | $columns = $blueprint->getColumns(); | |
| 136 | if ($columns === []) { | |
| 137 | throw new \InvalidArgumentException('Cannot add columns with no columns defined.'); | |
| 138 | } | |
| 139 | ||
| 140 | $backfills = $blueprint->getBackfills(); | |
| 141 | ||
| 142 | // A NOT NULL column without a default cannot be added to a | |
| 143 | // non-empty table — its backfill renders as a temporary inline | |
| 144 | // DEFAULT so the ADD succeeds and fills the existing rows (the | |
| 145 | // rebuild, not this path, produces the no-final-default shape). | |
| 146 | $statements = array_map( | |
| 147 | fn (array $column): string => 'ALTER TABLE ' . $this->wrap($table) | |
| 148 | . ' ADD COLUMN ' . $this->compileAddColumn($this->withTemporaryDefault($column, $backfills)), | |
| 149 | $columns, | |
| 150 | ); | |
| 151 | ||
| 152 | // SQLite cannot SET/DROP a column default in place, so a backfill | |
| 153 | // on an in-place (nullable) add is an UPDATE of the existing rows. | |
| 154 | // A NOT NULL-no-default column already got its backfill from the | |
| 155 | // inline DEFAULT above — no UPDATE for it. | |
| 156 | foreach ($backfills as $column => $value) { | |
| 157 | if ($this->addedNotNullWithoutDefault($blueprint, $column)) { | |
| 158 | continue; | |
| 159 | } | |
| 160 | ||
| 161 | $statements[] = 'UPDATE ' . $this->wrap($table) . ' SET ' . $this->wrap($column) | |
| 162 | . ' = ' . $this->compileDefault($value) . ' WHERE ' . $this->wrap($column) . ' IS NULL'; | |
| 163 | } | |
| 164 | ||
| 165 | return $statements; | |
| 166 | } | |
| 167 | ||
| 168 | /** | |
| 169 | * Whether the named column is an added NOT NULL column without a | |
| 170 | * declared default. | |
| 171 | * | |
| 172 | * @param Blueprint $blueprint | |
| 173 | * @param string $name | |
| 174 | * @return bool | |
| 175 | */ | |
| 176 | private function addedNotNullWithoutDefault(Blueprint $blueprint, string $name): bool | |
| 177 | { | |
| 178 | foreach ($blueprint->getColumns() as $column) { | |
| 179 | if ($column['name'] === $name) { | |
| 180 | return $column['nullable'] !== true && $column['default'] === null; | |
| 181 | } | |
| 182 | } | |
| 183 | ||
| 184 | return false; | |
| 185 | } | |
| 186 | ||
| 187 | /** | |
| 188 | * Compile the `ALTER TABLE ... DROP COLUMN` statements. | |
| 189 | * | |
| 190 | * SQLite 3.35+ drops columns natively, one `DROP COLUMN` clause per | |
| 191 | * statement. | |
| 192 | * | |
| 193 | * @param Blueprint $blueprint | |
| 194 | * @return list<string> | |
| 195 | */ | |
| 196 | #[\Override] | |
| 197 | public function compileDropColumns(Blueprint $blueprint): array | |
| 198 | { | |
| 199 | $table = $blueprint->getTable(); | |
| 200 | $columns = $blueprint->getDropColumns(); | |
| 201 | if ($columns === []) { | |
| 202 | throw new \InvalidArgumentException('Cannot drop columns with no columns defined.'); | |
| 203 | } | |
| 204 | ||
| 205 | return array_map( | |
| 206 | fn (string $column): string => 'ALTER TABLE ' . $this->wrap($table) | |
| 207 | . ' DROP COLUMN ' . $this->compileDropColumn($column), | |
| 208 | $columns, | |
| 209 | ); | |
| 210 | } | |
| 211 | ||
| 212 | /** | |
| 213 | * Compile one column's `DROP COLUMN` clause. | |
| 214 | * | |
| 215 | * @param string $column | |
| 216 | * @return string | |
| 217 | */ | |
| 218 | #[\Override] | |
| 219 | protected function compileDropColumn(string $column): string | |
| 220 | { | |
| 221 | return $this->wrap($column); | |
| 222 | } | |
| 223 | ||
| 224 | /** | |
| 225 | * Compile the full table-rebuild sequence — SQLite's answer to every | |
| 226 | * change it cannot make in place (content drift, FK/CHECK changes). | |
| 227 | * | |
| 228 | * The order is critical: create-new → copy → drop-old → rename. The | |
| 229 | * copy projects the intersection of the live and desired column names. | |
| 230 | * | |
| 231 | * @param Blueprint $desired | |
| 232 | * @param string $tempName | |
| 233 | * @param list<string> $liveColumns | |
| 234 | * @param bool $foreignKeyConstraintsEnabled Whether the connection currently has `PRAGMA foreign_keys` ON. | |
| 235 | * @return list<string> | |
| 236 | * @throws \InvalidArgumentException | |
| 237 | */ | |
| 238 | public function compileRebuildTable( | |
| 239 | Blueprint $desired, | |
| 240 | string $tempName, | |
| 241 | array $liveColumns, | |
| 242 | bool $foreignKeyConstraintsEnabled, | |
| 243 | ): array { | |
| 244 | $table = $desired->getTable(); | |
| 245 | ||
| 246 | // The copy projection: live ∩ desired — the data that survives. | |
| 247 | $desiredNames = array_map(fn (array $column) => $column['name'], $desired->getColumns()); | |
| 248 | $copyColumns = array_values(array_intersect($liveColumns, $desiredNames)); | |
| 249 | ||
| 250 | if ($copyColumns === []) { | |
| 251 | throw new \InvalidArgumentException(sprintf( | |
| 252 | 'A table rebuild of [%s] would copy no columns (live [%s] vs desired [%s]); ' | |
| 253 | . 'the rebuild is refused — drop and re-create the table explicitly instead.', | |
| 254 | $table, | |
| 255 | implode(', ', $liveColumns), | |
| 256 | implode(', ', $desiredNames), | |
| 257 | )); | |
| 258 | } | |
| 259 | ||
| 260 | // The temp blueprint: same desired shape, bound to the temp name, | |
| 261 | // WITHOUT indexes (they are re-created from the original blueprint | |
| 262 | // after the rename — derived names must carry the final table | |
| 263 | // name, never the temp name). | |
| 264 | $tempBlueprint = $desired->forTable($tempName); | |
| 265 | ||
| 266 | // An added NOT NULL column has no source in the copy projection — | |
| 267 | // the copy supplies its value for every surviving row: the | |
| 268 | // blueprint's explicit backfill(), else the column's declared | |
| 269 | // default — never a guessed zero value. A NOT NULL added column | |
| 270 | // with neither fails fast at compile time. A column WITH a value | |
| 271 | // keeps its NOT NULL in the temp definition (its copy projection | |
| 272 | // can never produce NULL), so the rebuild lands the final shape in | |
| 273 | // one apply; only a nullable added column copies as its natural | |
| 274 | // NULL and needs no relaxation at all. | |
| 275 | $declaredBackfills = $desired->getBackfills(); | |
| 276 | $backfills = []; | |
| 277 | ||
| 278 | foreach ($desired->getColumns() as $column) { | |
| 279 | if (in_array($column['name'], $liveColumns, true)) { | |
| 280 | continue; // Not an added column — it has a copy source. | |
| 281 | } | |
| 282 | ||
| 283 | if ($column['nullable'] === true) { | |
| 284 | continue; // Nullable added columns copy as their natural NULL. | |
| 285 | } | |
| 286 | ||
| 287 | $value = $declaredBackfills[$column['name']] ?? $column['default'] ?? null; | |
| 288 | ||
| 289 | if ($value === null) { | |
| 290 | throw new \InvalidArgumentException(sprintf( | |
| 291 | 'A table rebuild of [%s] cannot add the NOT NULL column [%s]: it declares no ' | |
| 292 | . 'default and no backfill() value to fill the existing rows with. Declare a ' | |
| 293 | . 'default on the column, provide one with Blueprint::backfill(), or make the ' | |
| 294 | . 'column nullable.', | |
| 295 | $table, | |
| 296 | $column['name'], | |
| 297 | )); | |
| 298 | } | |
| 299 | ||
| 300 | $backfills[$column['name']] = $value; | |
| 301 | } | |
| 302 | ||
| 303 | $statements = array_values(array_filter([ | |
| 304 | $foreignKeyConstraintsEnabled ? 'PRAGMA foreign_keys = OFF' : null, | |
| 305 | 'CREATE TABLE ' . $this->wrap($tempName) . ' (' . $this->compileTableBody($tempBlueprint) . ')', | |
| 306 | $this->compileCopyTableWithBackfill($table, $tempName, $copyColumns, $backfills), | |
| 307 | $this->compileDrop($table), | |
| 308 | $this->compileRenameTable($tempName, $table), | |
| 309 | $foreignKeyConstraintsEnabled ? 'PRAGMA foreign_keys = ON' : null, | |
| 310 | ])); | |
| 311 | ||
| 312 | return $statements; | |
| 313 | } | |
| 314 | ||
| 315 | /** | |
| 316 | * Compile the data-copy statement, backfilling the added NOT NULL | |
| 317 | * columns with their values. | |
| 318 | * | |
| 319 | * @param string $from | |
| 320 | * @param string $to | |
| 321 | * @param list<string> $columns The live ∩ desired projection. | |
| 322 | * @param array<string, mixed> $backfills Added column => backfill value. | |
| 323 | * @return string | |
| 324 | */ | |
| 325 | private function compileCopyTableWithBackfill(string $from, string $to, array $columns, array $backfills): string | |
| 326 | { | |
| 327 | if ($backfills === []) { | |
| 328 | return $this->compileCopyTable($from, $to, $columns); | |
| 329 | } | |
| 330 | ||
| 331 | $targetColumns = [...$columns, ...array_keys($backfills)]; | |
| 332 | ||
| 333 | $selectExpressions = array_map( | |
| 334 | fn (string $column): string => $this->wrap($column), | |
| 335 | $columns, | |
| 336 | ); | |
| 337 | ||
| 338 | foreach ($backfills as $default) { | |
| 339 | $selectExpressions[] = $this->compileDefault($default); | |
| 340 | } | |
| 341 | ||
| 342 | return 'INSERT INTO ' . $this->wrap($to) | |
| 343 | . ' (' . implode(', ', array_map(fn (string $column) => $this->wrap($column), $targetColumns)) . ')' | |
| 344 | . ' SELECT ' . implode(', ', $selectExpressions) | |
| 345 | . ' FROM ' . $this->wrap($from); | |
| 346 | } | |
| 347 | } |