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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 Db |
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* @subpackage Adapters |
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* @copyright Copyright (c) 2005 - 2017 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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/** |
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* @see DbPdo Padre de Drivers Pdo |
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*/ |
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require_once CORE_PATH . 'libs/db/adapters/pdo.php'; |
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/** |
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* PDO PostgreSQL Database Support |
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* |
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* @category Kumbia |
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* @package Db |
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* @subpackage Adapters |
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*/ |
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class DbPdoPgSQL extends DbPDO |
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{ |
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/** |
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* Nombre de RBDM |
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*/ |
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protected $db_rbdm = "pgsql"; |
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/** |
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* Puerto de Conexión a PostgreSQL |
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* |
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* @var integer |
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*/ |
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protected $db_port = 5432; |
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/** |
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* Tipo de Dato Integer |
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* |
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*/ |
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const TYPE_INTEGER = "INTEGER"; |
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/** |
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* Tipo de Dato Date |
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* |
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*/ |
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const TYPE_DATE = "DATE"; |
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/** |
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* Tipo de Dato Varchar |
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* |
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*/ |
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const TYPE_VARCHAR = "VARCHAR"; |
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/** |
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* Tipo de Dato Decimal |
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* |
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*/ |
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const TYPE_DECIMAL = "DECIMAL"; |
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/** |
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* Tipo de Dato Datetime |
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* |
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*/ |
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const TYPE_DATETIME = "DATETIME"; |
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/** |
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* Tipo de Dato Char |
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* |
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*/ |
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const TYPE_CHAR = "CHAR"; |
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/** |
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* Ejecuta acciones de incializacion del driver |
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* |
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*/ |
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public function initialize() |
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{ |
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} |
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/** |
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* Devuelve el ultimo id autonumerico generado en la BD |
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* |
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* @return integer |
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*/ |
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public function last_insert_id($table='', $primary_key='') |
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{ |
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return $this->pdo->lastInsertId("{$table}_{$primary_key}_seq"); |
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} |
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/** |
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* Verifica si una tabla existe o no |
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* |
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* @param string $table |
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* @return boolean |
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*/ |
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function table_exists($table, $schema='') |
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{ |
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$table = addslashes(strtolower($table)); |
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if (strpos($table, ".")) { |
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list($schema, $table) = explode(".", $table); |
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} |
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if ($schema == '') { |
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$num = $this->fetch_one("SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = 'public' AND TABLE_NAME ='$table'"); |
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} else { |
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$schema = addslashes(strtolower($schema)); |
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$num = $this->fetch_one("SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = '$schema' AND TABLE_NAME ='$table'"); |
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} |
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return $num[0]; |
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} |
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/** |
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* Devuelve un LIMIT valido para un SELECT del RBDM |
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* |
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* @param string $sql consulta sql |
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* @return string |
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*/ |
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public function limit($sql) |
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{ |
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$params = Util::getParams(func_get_args()); |
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$sql_new = $sql; |
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if (isset($params['limit']) && is_numeric($params['limit'])) { |
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$sql_new.=" LIMIT $params[limit]"; |
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} |
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if (isset($params['offset']) && is_numeric($params['offset'])) { |
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$sql_new.=" OFFSET $params[offset]"; |
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} |
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return $sql_new; |
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} |
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/** |
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* Borra una tabla de la base de datos |
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* |
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* @param string $table |
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* @return boolean |
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*/ |
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public function drop_table($table, $if_exists=true) |
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{ |
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if ($if_exists) { |
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if ($this->table_exists($table)) { |
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return $this->query("DROP TABLE $table"); |
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} else { |
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return true; |
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} |
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} |
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return $this->query("DROP TABLE $table"); |
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} |
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/** |
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* Crea una tabla utilizando SQL nativo del RDBM |
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* |
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* TODO: |
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* - Falta que el parametro index funcione. Este debe listar indices compuestos multipes y unicos |
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* - Agregar el tipo de tabla que debe usarse (PostgreSQL) |
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* - Soporte para campos autonumericos |
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* - Soporte para llaves foraneas |
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* |
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* @param string $table |
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* @param array $definition |
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* @return boolean |
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*/ |
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public function create_table($table, $definition, $index=array()) |
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{ |
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$create_sql = "CREATE TABLE $table ("; |
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if (!is_array($definition)) { |
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throw new KumbiaException("Definición inválida para crear la tabla '$table'"); |
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} |
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$create_lines = array(); |
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$index = array(); |
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$unique_index = array(); |
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$primary = array(); |
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//$not_null = ""; |
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//$size = ""; |
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foreach ($definition as $field => $field_def) { |
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if (isset($field_def['not_null'])) { |
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$not_null = $field_def['not_null'] ? 'NOT NULL' : ''; |
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} else { |
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$not_null = ""; |
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} |
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if (isset($field_def['size'])) { |
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$size = $field_def['size'] ? '(' . $field_def['size'] . ')' : ''; |
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} else { |
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$size = ""; |
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} |
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if (isset($field_def['index'])) { |
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if ($field_def['index']) { |
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$index[] = "INDEX($field)"; |
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} |
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} |
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if (isset($field_def['unique_index'])) { |
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if ($field_def['unique_index']) { |
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$index[] = "UNIQUE($field)"; |
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} |
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} |
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if (isset($field_def['primary'])) { |
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if ($field_def['primary']) { |
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$primary[] = "$field"; |
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} |
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} |
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if (isset($field_def['auto'])) { |
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if ($field_def['auto']) { |
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$field_def['type'] = "SERIAL"; |
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} |
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} |
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if (isset($field_def['extra'])) { |
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$extra = $field_def['extra']; |
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} else { |
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$extra = ""; |
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} |
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$create_lines[] = "$field " . $field_def['type'] . $size . ' ' . $not_null . ' ' . $extra; |
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} |
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$create_sql.= join(',', $create_lines); |
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$last_lines = array(); |
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if (count($primary)) { |
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$last_lines[] = 'PRIMARY KEY(' . join(",", $primary) . ')'; |
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} |
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if (count($index)) { |
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$last_lines[] = join(',', $index); |
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} |
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if (count($unique_index)) { |
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$last_lines[] = join(',', $unique_index); |
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} |
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if (count($last_lines)) { |
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$create_sql.= ',' . join(',', $last_lines) . ')'; |
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} |
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return $this->query($create_sql); |
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} |
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/** |
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* Listar las tablas en la base de datos |
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* |
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* @return array |
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*/ |
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public function list_tables() |
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{ |
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return $this->fetch_all("SELECT c.relname AS table_name FROM pg_class c, pg_user u " |
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. "WHERE c.relowner = u.usesysid AND c.relkind = 'r' " |
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. "AND NOT EXISTS (SELECT 1 FROM pg_views WHERE viewname = c.relname) " |
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. "AND c.relname !~ '^(pg_|sql_)' UNION " |
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. "SELECT c.relname AS table_name FROM pg_class c " |
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. "WHERE c.relkind = 'r' " |
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. "AND NOT EXISTS (SELECT 1 FROM pg_views WHERE viewname = c.relname) " |
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. "AND NOT EXISTS (SELECT 1 FROM pg_user WHERE usesysid = c.relowner) " |
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. "AND c.relname !~ '^pg_'"); |
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} |
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/** |
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* Listar los campos de una tabla |
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* |
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* @param string $table |
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* @return array |
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*/ |
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public function describe_table($table, $schema='') |
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{ |
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$describe = $this->fetch_all("SELECT a.attname AS Field, t.typname AS Type, |
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CASE WHEN attnotnull=false THEN 'YES' ELSE 'NO' END AS Null, |
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CASE WHEN (select cc.contype FROM pg_catalog.pg_constraint cc WHERE |
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cc.conrelid = c.oid AND cc.conkey[1] = a.attnum)='p' THEN 'PRI' ELSE '' |
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END AS Key, CASE WHEN atthasdef=true THEN TRUE ELSE NULL END AS Default |
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FROM pg_catalog.pg_class c, pg_catalog.pg_attribute a, |
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pg_catalog.pg_type t WHERE c.relname = '$table' AND c.oid = a.attrelid |
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AND a.attnum > 0 AND t.oid = a.atttypid order by a.attnum"); |
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$final_describe = array(); |
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foreach ($describe as $key => $value) { |
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$final_describe[] = array( |
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"Field" => $value["field"], |
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"Type" => $value["type"], |
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"Null" => $value["null"], |
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"Key" => $value["key"], |
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"Default" => $value["default"] |
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); |
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} |
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return $final_describe; |
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} |
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} |
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