<?php
/**
* KumbiaPHP web & app Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://wiki.kumbiaphp.com/Licencia
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to hide@address.com so we can send you a copy immediately.
*
* PDO Oracle Database Support
*
* @category Kumbia
* @package Db
* @subpackage Adapters
* @copyright Copyright (c) 2005-2009 Kumbia Team (http://www.kumbiaphp.com)
* @license http://wiki.kumbiaphp.com/Licencia New BSD License
*/
class DbPdoOracle extends DbPDO {
/**
* Nombre de RBDM
*/
protected $db_rbdm = "oci";
/**
* Tipo de Dato Integer
*
*/
const TYPE_INTEGER = "INTEGER";
/**
* Tipo de Dato Date
*
*/
const TYPE_DATE = "DATE";
/**
* Tipo de Dato Varchar
*
*/
const TYPE_VARCHAR = "VARCHAR2";
/**
* Tipo de Dato Decimal
*
*/
const TYPE_DECIMAL = "DECIMAL";
/**
* Tipo de Dato Datetime
*
*/
const TYPE_DATETIME = "DATETIME";
/**
* Tipo de Dato Char
*
*/
const TYPE_CHAR = "CHAR";
/**
* Ejecuta acciones de incializacion del driver
*
*/
public function initialize(){
$this->pdo->setAttribute(PDO::ATTR_AUTOCOMMIT, false);
$this->exec("alter session set nls_date_format = 'YYYY-MM-DD'");
$this->begin();
}
/**
* Devuelve un LIMIT valido para un SELECT del RBDM
*
* @param integer $number
* @return string
*/
public function limit($sql, $number){
if(!is_numeric($number)||$number<0){
return $sql;
}
if(eregi("ORDER[\t\n\r ]+BY", $sql)){
if(stripos($sql, "WHERE")){
return eregi_replace("ORDER[\t\n\r ]+BY", "AND ROWNUM <= $number ORDER BY", $sql);
} else {
return eregi_replace("ORDER[\t\n\r ]+BY", "WHERE ROWNUM <= $number ORDER BY", $sql);
}
} else {
if(stripos($sql, "WHERE")){
return "$sql AND ROWNUM <= $number";
} else {
return "$sql WHERE ROWNUM <= $number";
}
}
}
/**
* Borra una tabla de la base de datos
*
* @param string $table
* @return boolean
*/
public function drop_table($table, $if_exists=true){
if($if_exists){
if($this->table_exists($table)){
return $this->query("DROP TABLE $table");
} else {
return true;
}
} else {
return $this->query("DROP TABLE $table");
}
}
/**
* Crea una tabla utilizando SQL nativo del RDBM
*
* TODO:
* - Falta que el parametro index funcione. Este debe listar indices compuestos multipes y unicos
* - Agregar el tipo de tabla que debe usarse (Oracle)
* - Soporte para campos autonumericos
* - Soporte para llaves foraneas
*
* @param string $table
* @param array $definition
* @return boolean
*/
public function create_table($table, $definition, $index=array()){
$create_sql = "CREATE TABLE $table (";
if(!is_array($definition)){
new KumbiaException("Definición invalida para crear la tabla '$table'");
return false;
}
$create_lines = array();
$index = array();
$unique_index = array();
$primary = array();
$not_null = "";
$size = "";
foreach($definition as $field => $field_def){
if(isset($field_def['not_null'])){
$not_null = $field_def['not_null'] ? 'NOT NULL' : '';
} else {
$not_null = "";
}
if(isset($field_def['size'])){
$size = $field_def['size'] ? '('.$field_def['size'].')' : '';
} else {
$size = "";
}
if(isset($field_def['index'])){
if($field_def['index']){
$index[] = "INDEX($field)";
}
}
if(isset($field_def['unique_index'])){
if($field_def['unique_index']){
$index[] = "UNIQUE($field)";
}
}
if(isset($field_def['primary'])){
if($field_def['primary']){
$primary[] = "$field";
}
}
if(isset($field_def['auto'])){
if($field_def['auto']){
$this->query("CREATE SEQUENCE {$table}_{$field}_seq START WITH 1");
}
}
if(isset($field_def['extra'])){
$extra = $field_def['extra'];
} else {
$extra = "";
}
$create_lines[] = "$field ".$field_def['type'].$size.' '.$not_null.' '.$extra;
}
$create_sql.= join(',', $create_lines);
$last_lines = array();
if(count($primary)){
$last_lines[] = 'PRIMARY KEY('.join(",", $primary).')';
}
if(count($index)){
$last_lines[] = join(',', $index);
}
if(count($unique_index)){
$last_lines[] = join(',', $unique_index);
}
if(count($last_lines)){
$create_sql.= ','.join(',', $last_lines).')';
}
return $this->query($create_sql);
}
/**
* Listado de Tablas
*
* @param string $table
* @return boolean
*/
function list_tables(){
return $this->fetch_all("SELECT table_name FROM all_tables");
}
/**
* Devuelve el ultimo id autonumerico generado en la BD
*
* @return integer
*/
public function last_insert_id($table='', $primary_key=''){
/**
* Oracle No soporta columnas autonuméricas
*/
if($table&&$primary_key){
$sequence = $table."_".$primary_key."_seq";
$value = $this->fetch_one("SELECT $sequence.CURRVAL FROM dual");
return $value[0];
}
return false;
}
/**
* Verifica si una tabla existe o no
*
* @param string $table
* @return boolean
*/
function table_exists($table, $schema=''){
$num = $this->fetch_one("SELECT COUNT(*) FROM ALL_TABLES WHERE TABLE_NAME = '".strtoupper($table)."'");
return $num[0];
}
/**
* Listar los campos de una tabla
*
* @param string $table
* @return array
*/
public function describe_table($table, $schema=''){
/**
* Soporta schemas?
*/
$describe = $this->fetch_all("SELECT LOWER(ALL_TAB_COLUMNS.COLUMN_NAME) AS FIELD, LOWER(ALL_TAB_COLUMNS.DATA_TYPE) AS TYPE, ALL_TAB_COLUMNS.DATA_LENGTH AS LENGTH, (SELECT COUNT(*) FROM ALL_CONS_COLUMNS WHERE TABLE_NAME = '".strtoupper($table)."' AND ALL_CONS_COLUMNS.COLUMN_NAME = ALL_TAB_COLUMNS.COLUMN_NAME AND ALL_CONS_COLUMNS.POSITION IS NOT NULL) AS KEY, ALL_TAB_COLUMNS.NULLABLE AS ISNULL FROM ALL_TAB_COLUMNS WHERE ALL_TAB_COLUMNS.TABLE_NAME = '".strtoupper($table)."'");
$final_describe = array();
foreach($describe as $key => $value){
$final_describe[] = array(
"Field" => $value["field"],
"Type" => $value["type"],
"Null" => $value["isnull"] == "Y" ? "YES" : "NO",
"Key" => $value["key"] == 1 ? "PRI" : ""
);
}
return $final_describe;
}
}