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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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* @package ActiveRecord |
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* @subpackage Metadata |
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* @copyright Copyright (c) 2005-2014 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 Kumbia\ActiveRecord\Db; |
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/** |
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* Adaptador de Metadata para Pgsql |
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* |
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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 string $database base de datos |
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* @param string $table tabla |
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* @param string $schema squema |
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* @return array |
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*/ |
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protected function queryFields($database, $table, $schema = 'public') |
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{ |
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// Nota: Se excluyen claves compuestas |
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$describe = Db::get($database)->query(" |
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SELECT DISTINCT |
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c.column_name AS field, |
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c.udt_name AS type, |
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tc.constraint_type AS key, |
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c.column_default AS default, |
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c.is_nullable AS null |
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FROM information_schema.columns c |
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LEFT OUTER JOIN information_schema.key_column_usage cu ON ( |
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cu.column_name = c.column_name AND cu.table_name = c.table_name AND ( |
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SELECT COUNT(*) FROM information_schema.key_column_usage |
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WHERE constraint_name = cu.constraint_name |
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) = 1) |
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LEFT OUTER JOIN information_schema.table_constraints tc |
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ON (cu.constraint_name = tc.constraint_name AND tc.constraint_type IN ('PRIMARY KEY', 'UNIQUE')) |
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WHERE c.table_name = '$table' AND c.table_schema = '$schema'; |
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"); |
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return self::describe($describe); |
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} |
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/** |
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* Genera la metadata |
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* |
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* @param \PDOStatement $describe |
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* @return array |
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*/ |
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private static function describe(\PDOStatement $describe) |
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{ |
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$fields = array(); |
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foreach ($describe as $value) { |
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$fields[$value['field']] = array( |
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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' => \preg_match('/^nextval\(/', $value['default']) |
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); |
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} |
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return $fields; |
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} |
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} |
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KumbiaPHP /
ActiveRecord
