Adapter MsSQL
De KumbiaPHP Framework Wiki
Adaptador para las bases MS SQL
Este adaptador no utiliza PDO, es decir puedes configurar tu archivo database.ini de esta forma
[development]
host = localhost
username = sa
password =
name = master
type = mssqlel código es el siguiente.
class DbMsSQL extends DbBase implements DbBaseInterface {
/**
* Resource de la Conexion a MsSQL
*
* @var resource
*/
public $id_connection;
/**
* Ultimo Resultado de una Query
*
* @var resource
*/
public $last_result_query;
/**
* Ultima sentencia SQL enviada a MsSQL
*
* @var string
*/
private $last_query;
/**
* Ultimo error generado por MsSQL
*
* @var string
*/
public $last_error;
/**
* Resultado de Array Asociativo
*
*/
const DB_ASSOC = MSSQL_ASSOC;
/**
* Resultado de Array Asociativo y Numerico
*
*/
const DB_BOTH = MSSQL_BOTH;
/**
* Resultado de Array Numerico
*
*/
const DB_NUM = MSSQL_NUM;
/**
* Tipo de Dato Integer
*
*/
const TYPE_INTEGER = 'INT';
/**
* Tipo de Dato Date
*
*/
const TYPE_DATE = 'SMALLDATETIME';
/**
* Tipo de Dato Varchar
*
*/
const TYPE_VARCHAR = 'VARCHAR';
/**
* Tipo de Dato Decimal
*
*/
const TYPE_DECIMAL = 'DECIMAL';
/**
* Tipo de Dato Datetime
*
*/
const TYPE_DATETIME = 'DATETIME';
/**
* Tipo de Dato Char
*
*/
const TYPE_CHAR = 'CHAR';
/**
* Hace una conexion a la base de datos de MsSQL
*
* @param array $config
* @return resource_connection
*/
public function connect($config){
if(!extension_loaded('mssql')){
throw new KumbiaException('Debe cargar la extensión de PHP llamada php_mssql');
}
if(!isset($config['port']) || !$config['port']) {
$config['port'] = 1433;
}
if($this->id_connection = mssql_connect("{$config['host']},{$config['port']}", $config['username'], $config['password'], true)){
if($config['name']!=='') {
if(!mssql_select_db($config['name'], $this->id_connection)){
throw new KumbiaException($this->error());
}
}
return true;
} else {
throw new KumbiaException($this->error());
}
}
/**
* Efectua operaciones SQL sobre la base de datos
*
* @param string $sqlQuery
* @return resource or false
*/
public function query($sql_query){
$this->debug($sql_query);
if($this->logger){
Logger::debug($sql_query);
}
if(!$this->id_connection){
$this->connect();
if(!$this->id_connection){
return false;
}
}
$this->last_query = $sql_query;
if($result_query = mssql_query($sql_query, $this->id_connection)){
$this->last_result_query = $result_query;
return $result_query;
}else{
$this->last_result_query = false;
throw new KumbiaException($this->error(" al ejecutar <em>\"$sql_query\"</em>"));
}
}
/**
* Cierra la Conexión al Motor de Base de datos
*/
public function close(){
if($this->id_connection) {
return mssql_close();
}
return false;
}
/**
* Devuelve fila por fila el contenido de un select
*
* @param resource $result_query
* @param int $opt
* @return array
*/
public function fetch_array($result_query='', $opt=MSSQL_BOTH){
if(!$this->id_connection){
return false;
}
if(!$result_query){
$result_query = $this->last_result_query;
if(!$result_query){
return false;
}
}
return mssql_fetch_array($result_query, $opt);
}
/**
* Constructor de la Clase
*
* @param array $config
*/
public function __construct($config){
$this->connect($config);
}
/**
* Devuelve el numero de filas de un select
*/
public function num_rows($result_query=''){
if(!$this->id_connection){
return false;
}
if(!$result_query){
$result_query = $this->last_result_query;
if(!$result_query){
return false;
}
}
if(($number_rows = mssql_num_rows($result_query))!==false){
return $number_rows;
} else {
throw new KumbiaException($this->error());
}
return false;
}
/**
* Devuelve el nombre de un campo en el resultado de un select
*
* @param int $number
* @param resource $result_query
* @return string
*/
public function field_name($number, $result_query=''){
if(!$this->id_connection){
return false;
}
if(!$result_query){
$result_query = $this->last_result_query;
if(!$result_query){
return false;
}
}
if(($fieldName = mssql_field_name($result_query, $number))!==false){
return $fieldName;
} else {
throw new KumbiaException($this->error());
}
return false;
}
/**
* Se Mueve al resultado indicado por $number en un select
*
* @param int $number
* @param resource $result_query
* @return boolean
*/
public function data_seek($number, $result_query=''){
if(!$result_query){
$result_query = $this->last_result_query;
if(!$result_query){
return false;
}
}
if(($success = mssql_data_seek($result_query, $number))!==false){
return $success;
} else {
throw new KumbiaException($this->error());
}
return false;
}
/**
* Numero de Filas afectadas en un insert, update o delete
*
* @param resource $result_query
* @return int
*/
public function affected_rows($result_query=''){
if(($numberRows = mssql_affected_rows())!==false){
return $numberRows;
} else {
$this->lastError = $this->error();
throw new KumbiaException($this->error());
}
return false;
}
/**
* Devuelve el error de MsSQL
*
* @return string
*/
public function error($err=''){
if(!$this->id_connection){
$this->last_error = mssql_get_last_message() ? mssql_get_last_message() : "[Error Desconocido en MsSQL: $err]";
if($this->logger){
Logger::error($this->last_error);
}
return $this->last_error;
}
$this->last_error = mssql_get_last_message() ? mssql_get_last_message() : "[Error Desconocido en MsSQL: $err]";
$this->last_error.= $err;
if($this->logger){
Logger::error($this->last_error);
}
return $this->last_error;
}
/**
* Devuelve el no error de MsSQL
*
* @return int
*/
public function no_error(){
if(!$this->id_connection){
return false;
}
return mssql_errno();
}
/**
* Devuelve el ultimo id autonumerico generado en la BD
*
* @return int
*/
public function last_insert_id($table='', $primary_key=''){
if(!$this->id_connection){
return false;
}
$id = false;
$result = mssql_query("select max({$primary_key}) from $table");
if ($row = mssql_fetch_row($result)) {
$this->id_connection = trim($row[0]);
}
mssql_free_result($res);
return $this->id_connection;
}
/**
* Verifica si una tabla existe o no
*
* @param string $table
* @return boolean
*/
public function table_exists($table, $schema=''){
$table = addslashes("$table");
if($schema==''){
$num = $this->fetch_one("SELECT COUNT(*) FROM
INFORMATION_SCHEMA.TABLES
WHERE TABLE_NAME = '$table'");
} else {
$schema = addslashes("$schema");
$num = $this->fetch_one("SELECT COUNT(*) FROM
INFORMATION_SCHEMA.TABLES
WHERE TABLE_NAME = '$table'
AND TABLE_SCHEMA = '$schema'");
}
return $num[0];
}
/**
* Devuelve un LIMIT valido para un SELECT del RBDM
*
* @param string $sql consulta sql
* @return string
*/
public function limit($sql){
$params = Util::getParams(func_get_args());
$sql_new = $sql;
if(isset($params['limit']) && is_numeric($params['limit'])){
$sql_new = str_replace("SELECT ", "SELECT TOP $params[limit] ", $sql);
}
return $sql_new;
}
/**
* Borra una tabla de la base de datos
*
* @param string $table
* @return boolean
*/
public function drop_table($table, $if_exists=true){
if($if_exists){
$sql = "IF EXISTS(SELECT TABLE_NAME FROM
INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = '$table')
DROP TABLE $table;";
return $this->query($sql);
} else {
return $this->query("DROP TABLE $table");
}
}
/**
* Listar las tablas en la base de datos
*
* @return array
*/
public function list_tables(){
return $this->fetch_all("SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES");
}
/**
* Listar los campos de una tabla
*
* @param string $table
* @return array
*/
public function describe_table($table, $schema=''){
$sql = "SELECT A.name as Field,
(case when A.isnullable=0 then 'NO' when A.isnullable=1 then 'YES' end) as 'Null',
(case when A.colorder=1 then 'PRI' when A.colorder>1 then '' end ) as 'Key',
convert(varchar, C.name) + '(' + convert(varchar, (A.length)) + ')' as 'Type',
(case when A.cdefault=0 then 'NULL' when A.cdefault<>0 then '0' end) as 'Default'
FROM syscolumns A
left join sysobjects B on A.id = B.id
left join systypes C on C.xtype = A.xtype
WHERE B.name = '$table'";
return $this->fetch_all($sql);
}
/**
* Devuelve fila por fila el contenido de un select
*
* @param resource $result_query
* @param string $class clase de objeto
* @return object
*/
public function fetch_object($result_query=null, $class='stdClass'){
if(!$result_query){
$result_query = $this->last_result_query;
}
return mssql_fetch_object($result_query, $class);
}
}Realizado por: FiDeLio
