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<?php |
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/** |
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* KumbiaPHP web & app Framework. |
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* |
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* LICENSE |
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* |
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* This source file is subject to the new BSD license that is bundled |
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* with this package in the file LICENSE.txt. |
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* It is also available through the world-wide-web at this URL: |
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* http://wiki.kumbiaphp.com/Licencia |
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* If you did not receive a copy of the license and are unable to |
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* obtain it through the world-wide-web, please send an email |
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* to [email protected] so we can send you a copy immediately. |
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* |
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* @category Kumbia |
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* |
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* @copyright 2005 - 2020 Kumbia Team (http://www.kumbiaphp.com) |
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* @license http://wiki.kumbiaphp.com/Licencia New BSD License |
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*/ |
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namespace Kumbia\ActiveRecord\Metadata; |
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use \PDO; |
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/** |
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* Adaptador de Metadata para Pgsql. |
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*/ |
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class PgsqlMetadata extends Metadata |
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{ |
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/** |
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* Consultar los campos de la tabla en la base de datos. |
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* |
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* @param \PDO $pdo base de datos |
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* @param string $table tabla |
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* @param string $schema esquema, por defecto 'public' |
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* |
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* @return array |
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*/ |
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protected function queryFields(\PDO $pdo, string $table, string $schema = ''): array |
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{ |
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$schema = $schema ?: 'public'; // default to public |
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// Nota: Se excluyen claves compuestas |
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$describe = $pdo->query( |
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"SELECT |
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c.column_name AS field, |
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c.udt_name AS type, |
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tc.constraint_type AS key, |
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c.column_default AS default, |
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c.is_nullable AS null |
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FROM information_schema.columns c |
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LEFT OUTER JOIN information_schema.key_column_usage cu ON ( |
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cu.column_name = c.column_name AND cu.table_name = c.table_name AND ( |
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SELECT COUNT(*) FROM information_schema.key_column_usage |
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WHERE constraint_name = cu.constraint_name |
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) = 1) |
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LEFT OUTER JOIN information_schema.table_constraints tc |
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ON (cu.constraint_name = tc.constraint_name AND tc.constraint_type |
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IN ('PRIMARY KEY', 'UNIQUE')) |
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WHERE c.table_name = '$table' AND c.table_schema = '$schema' |
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;", |
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\PDO::FETCH_OBJ |
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); |
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return $this->describe($describe->fetchAll()); |
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} |
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/** |
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* Genera la metadata. |
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* |
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* @param array $describe |
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* |
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* @return array |
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*/ |
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private function describe(array $describe): array |
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{ |
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$fields = []; |
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// TODO mejorar este código |
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foreach ($describe as $value) { |
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$fields[$value->field] = [ |
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'Type' => $value->type, |
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'Null' => $value->null !== 'NO', |
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'Default' => $value->default != '', |
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'Key' => \substr($value->key, 0, 3), |
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'Auto' => (bool) \preg_match('/^nextval\(/', $value->default) |
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]; |
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$this->filterColumn($fields[$value->field], $value->field); |
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} |
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return $fields; |
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} |
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} |
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KumbiaPHP /
ActiveRecord
