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<?php |
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/** |
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* This file is part of Cycle ORM package. |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace Cycle\Database\Driver\SQLite; |
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use Cycle\Database\Driver\CachingCompilerInterface; |
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use Cycle\Database\Driver\Compiler; |
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use Cycle\Database\Driver\Quoter; |
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use Cycle\Database\Driver\SQLite\Injection\CompileJson; |
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use Cycle\Database\Exception\CompilerException; |
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use Cycle\Database\Injection\FragmentInterface; |
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use Cycle\Database\Injection\Parameter; |
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use Cycle\Database\Injection\ParameterInterface; |
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use Cycle\Database\Query\QueryParameters; |
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class SQLiteCompiler extends Compiler implements CachingCompilerInterface |
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{ |
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/** |
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* {@inheritdoc} |
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* |
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* @link http://stackoverflow.com/questions/10491492/sqllite-with-skip-offset-only-not-limit |
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*/ |
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protected function limit(QueryParameters $params, Quoter $q, int $limit = null, int $offset = null): string |
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{ |
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if ($limit === null && $offset === null) { |
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return ''; |
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} |
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if ($limit === null) { |
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$statement = 'LIMIT -1 '; |
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} else { |
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$statement = 'LIMIT ? '; |
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$params->push(new Parameter($limit)); |
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} |
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if ($offset !== null) { |
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$statement .= 'OFFSET ?'; |
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$params->push(new Parameter($offset)); |
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} |
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return trim($statement); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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protected function selectQuery(QueryParameters $params, Quoter $q, array $tokens): string |
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{ |
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// FOR UPDATE is not available |
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$tokens['forUpdate'] = false; |
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return parent::selectQuery($params, $q, $tokens); |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @see http://stackoverflow.com/questions/1609637/is-it-possible-to-insert-multiple-rows-at-a-time-in-an-sqlite-database |
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*/ |
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protected function insertQuery(QueryParameters $params, Quoter $q, array $tokens): string |
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{ |
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if ($tokens['columns'] === []) { |
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return sprintf( |
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'INSERT INTO %s DEFAULT VALUES', |
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$this->name($params, $q, $tokens['table'], true) |
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); |
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} |
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// @todo possibly different statement for versions higher than 3.7.11 |
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if (count($tokens['values']) === 1) { |
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return parent::insertQuery($params, $q, $tokens); |
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} |
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// SQLite uses alternative syntax |
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$statement = []; |
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$statement[] = sprintf( |
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'INSERT INTO %s (%s)', |
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$this->name($params, $q, $tokens['table'], true), |
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$this->columns($params, $q, $tokens['columns']) |
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); |
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foreach ($tokens['values'] as $rowset) { |
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if (count($statement) !== 1) { |
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// It is critically important to use UNION ALL, UNION will try to merge values together |
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// which will cause non predictable insert order |
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$statement[] = sprintf( |
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'UNION ALL SELECT %s', |
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trim($this->value($params, $q, $rowset), '()') |
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); |
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continue; |
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} |
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$selectColumns = []; |
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if ($rowset instanceof ParameterInterface && $rowset->isArray()) { |
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$rowset = $rowset->getValue(); |
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} |
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if (!is_array($rowset)) { |
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throw new CompilerException( |
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'Insert parameter expected to be parametric array' |
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); |
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} |
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foreach ($tokens['columns'] as $index => $column) { |
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$selectColumns[] = sprintf( |
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'%s AS %s', |
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$this->value($params, $q, $rowset[$index]), |
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$this->name($params, $q, $column) |
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); |
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} |
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$statement[] = 'SELECT ' . implode(', ', $selectColumns); |
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} |
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return implode("\n", $statement); |
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} |
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protected function compileJsonOrderBy(string $path): FragmentInterface |
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{ |
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return new CompileJson($path); |
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} |
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} |
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