/**
  * Retrieve a single object by pkey.
  *
  * @param      int $pk the primary key.
  * @param      PropelPDO $con the connection to use
  * @return     Parametro
  */
 public static function retrieveByPK($pk, PropelPDO $con = null)
 {
     if (null !== ($obj = ParametroPeer::getInstanceFromPool((string) $pk))) {
         return $obj;
     }
     if ($con === null) {
         $con = Propel::getConnection(ParametroPeer::DATABASE_NAME, Propel::CONNECTION_READ);
     }
     $criteria = new Criteria(ParametroPeer::DATABASE_NAME);
     $criteria->add(ParametroPeer::ID_PARAMETRO, $pk);
     $v = ParametroPeer::doSelect($criteria, $con);
     return !empty($v) > 0 ? $v[0] : null;
 }
 /**
  * Selects a collection of Tabla objects pre-filled with all related objects except Usuario.
  *
  * @param      Criteria  $c
  * @param      PropelPDO $con
  * @param      String    $join_behavior the type of joins to use, defaults to Criteria::LEFT_JOIN
  * @return     array Array of Tabla objects.
  * @throws     PropelException Any exceptions caught during processing will be
  *		 rethrown wrapped into a PropelException.
  */
 public static function doSelectJoinAllExceptUsuario(Criteria $c, $con = null, $join_behavior = Criteria::LEFT_JOIN)
 {
     $c = clone $c;
     // Set the correct dbName if it has not been overridden
     // $c->getDbName() will return the same object if not set to another value
     // so == check is okay and faster
     if ($c->getDbName() == Propel::getDefaultDB()) {
         $c->setDbName(self::DATABASE_NAME);
     }
     TablaPeer::addSelectColumns($c);
     $startcol2 = TablaPeer::NUM_COLUMNS - TablaPeer::NUM_LAZY_LOAD_COLUMNS;
     EmpresaPeer::addSelectColumns($c);
     $startcol3 = $startcol2 + (EmpresaPeer::NUM_COLUMNS - EmpresaPeer::NUM_LAZY_LOAD_COLUMNS);
     ParametroPeer::addSelectColumns($c);
     $startcol4 = $startcol3 + (ParametroPeer::NUM_COLUMNS - ParametroPeer::NUM_LAZY_LOAD_COLUMNS);
     $c->addJoin(array(TablaPeer::ID_EMPRESA), array(EmpresaPeer::ID_EMPRESA), $join_behavior);
     $c->addJoin(array(TablaPeer::ID_CATEGORIA), array(ParametroPeer::ID_PARAMETRO), $join_behavior);
     $stmt = BasePeer::doSelect($c, $con);
     $results = array();
     while ($row = $stmt->fetch(PDO::FETCH_NUM)) {
         $key1 = TablaPeer::getPrimaryKeyHashFromRow($row, 0);
         if (null !== ($obj1 = TablaPeer::getInstanceFromPool($key1))) {
             // We no longer rehydrate the object, since this can cause data loss.
             // See http://propel.phpdb.org/trac/ticket/509
             // $obj1->hydrate($row, 0, true); // rehydrate
         } else {
             $omClass = TablaPeer::getOMClass();
             $cls = substr('.' . $omClass, strrpos('.' . $omClass, '.') + 1);
             $obj1 = new $cls();
             $obj1->hydrate($row);
             TablaPeer::addInstanceToPool($obj1, $key1);
         }
         // if obj1 already loaded
         // Add objects for joined Empresa rows
         $key2 = EmpresaPeer::getPrimaryKeyHashFromRow($row, $startcol2);
         if ($key2 !== null) {
             $obj2 = EmpresaPeer::getInstanceFromPool($key2);
             if (!$obj2) {
                 $omClass = EmpresaPeer::getOMClass();
                 $cls = substr('.' . $omClass, strrpos('.' . $omClass, '.') + 1);
                 $obj2 = new $cls();
                 $obj2->hydrate($row, $startcol2);
                 EmpresaPeer::addInstanceToPool($obj2, $key2);
             }
             // if $obj2 already loaded
             // Add the $obj1 (Tabla) to the collection in $obj2 (Empresa)
             $obj2->addTabla($obj1);
         }
         // if joined row is not null
         // Add objects for joined Parametro rows
         $key3 = ParametroPeer::getPrimaryKeyHashFromRow($row, $startcol3);
         if ($key3 !== null) {
             $obj3 = ParametroPeer::getInstanceFromPool($key3);
             if (!$obj3) {
                 $omClass = ParametroPeer::getOMClass();
                 $cls = substr('.' . $omClass, strrpos('.' . $omClass, '.') + 1);
                 $obj3 = new $cls();
                 $obj3->hydrate($row, $startcol3);
                 ParametroPeer::addInstanceToPool($obj3, $key3);
             }
             // if $obj3 already loaded
             // Add the $obj1 (Tabla) to the collection in $obj3 (Parametro)
             $obj3->addTabla($obj1);
         }
         // if joined row is not null
         $results[] = $obj1;
     }
     $stmt->closeCursor();
     return $results;
 }