/**
  * Retrieve a single object by pkey.
  *
  * @param      int $pk the primary key.
  * @param      PropelPDO $con the connection to use
  * @return     Solicitud_estado
  */
 public static function retrieveByPK($pk, PropelPDO $con = null)
 {
     if (null !== ($obj = Solicitud_estadoPeer::getInstanceFromPool((string) $pk))) {
         return $obj;
     }
     if ($con === null) {
         $con = Propel::getConnection(Solicitud_estadoPeer::DATABASE_NAME, Propel::CONNECTION_READ);
     }
     $criteria = new Criteria(Solicitud_estadoPeer::DATABASE_NAME);
     $criteria->add(Solicitud_estadoPeer::ID, $pk);
     $v = Solicitud_estadoPeer::doSelect($criteria, $con);
     return !empty($v) > 0 ? $v[0] : null;
 }
 /**
  * Find object by primary key.
  * Propel uses the instance pool to skip the database if the object exists.
  * Go fast if the query is untouched.
  *
  * <code>
  * $obj  = $c->findPk(12, $con);
  * </code>
  *
  * @param     mixed $key Primary key to use for the query
  * @param     PropelPDO $con an optional connection object
  *
  * @return    Solicitud_estado|array|mixed the result, formatted by the current formatter
  */
 public function findPk($key, $con = null)
 {
     if ($key === null) {
         return null;
     }
     if (null !== ($obj = Solicitud_estadoPeer::getInstanceFromPool((string) $key)) && !$this->formatter) {
         // the object is alredy in the instance pool
         return $obj;
     }
     if ($con === null) {
         $con = Propel::getConnection(Solicitud_estadoPeer::DATABASE_NAME, Propel::CONNECTION_READ);
     }
     $this->basePreSelect($con);
     if ($this->formatter || $this->modelAlias || $this->with || $this->select || $this->selectColumns || $this->asColumns || $this->selectModifiers || $this->map || $this->having || $this->joins) {
         return $this->findPkComplex($key, $con);
     } else {
         return $this->findPkSimple($key, $con);
     }
 }
 /**
  * Selects a collection of Solicitud objects pre-filled with all related objects except Usuario.
  *
  * @param      Criteria  $criteria
  * @param      PropelPDO $con
  * @param      String    $join_behavior the type of joins to use, defaults to Criteria::LEFT_JOIN
  * @return     array Array of Solicitud objects.
  * @throws     PropelException Any exceptions caught during processing will be
  *		 rethrown wrapped into a PropelException.
  */
 public static function doSelectJoinAllExceptUsuario(Criteria $criteria, $con = null, $join_behavior = Criteria::LEFT_JOIN)
 {
     $criteria = clone $criteria;
     // Set the correct dbName if it has not been overridden
     // $criteria->getDbName() will return the same object if not set to another value
     // so == check is okay and faster
     if ($criteria->getDbName() == Propel::getDefaultDB()) {
         $criteria->setDbName(self::DATABASE_NAME);
     }
     SolicitudPeer::addSelectColumns($criteria);
     $startcol2 = SolicitudPeer::NUM_HYDRATE_COLUMNS;
     LibroPeer::addSelectColumns($criteria);
     $startcol3 = $startcol2 + LibroPeer::NUM_HYDRATE_COLUMNS;
     Solicitud_estadoPeer::addSelectColumns($criteria);
     $startcol4 = $startcol3 + Solicitud_estadoPeer::NUM_HYDRATE_COLUMNS;
     $criteria->addJoin(SolicitudPeer::ID_LIBRO, LibroPeer::ID, $join_behavior);
     $criteria->addJoin(SolicitudPeer::ID_ESTADO, Solicitud_estadoPeer::ID, $join_behavior);
     $stmt = BasePeer::doSelect($criteria, $con);
     $results = array();
     while ($row = $stmt->fetch(PDO::FETCH_NUM)) {
         $key1 = SolicitudPeer::getPrimaryKeyHashFromRow($row, 0);
         if (null !== ($obj1 = SolicitudPeer::getInstanceFromPool($key1))) {
             // We no longer rehydrate the object, since this can cause data loss.
             // See http://www.propelorm.org/ticket/509
             // $obj1->hydrate($row, 0, true); // rehydrate
         } else {
             $cls = SolicitudPeer::getOMClass();
             $obj1 = new $cls();
             $obj1->hydrate($row);
             SolicitudPeer::addInstanceToPool($obj1, $key1);
         }
         // if obj1 already loaded
         // Add objects for joined Libro rows
         $key2 = LibroPeer::getPrimaryKeyHashFromRow($row, $startcol2);
         if ($key2 !== null) {
             $obj2 = LibroPeer::getInstanceFromPool($key2);
             if (!$obj2) {
                 $cls = LibroPeer::getOMClass();
                 $obj2 = new $cls();
                 $obj2->hydrate($row, $startcol2);
                 LibroPeer::addInstanceToPool($obj2, $key2);
             }
             // if $obj2 already loaded
             // Add the $obj1 (Solicitud) to the collection in $obj2 (Libro)
             $obj2->addSolicitud($obj1);
         }
         // if joined row is not null
         // Add objects for joined Solicitud_estado rows
         $key3 = Solicitud_estadoPeer::getPrimaryKeyHashFromRow($row, $startcol3);
         if ($key3 !== null) {
             $obj3 = Solicitud_estadoPeer::getInstanceFromPool($key3);
             if (!$obj3) {
                 $cls = Solicitud_estadoPeer::getOMClass();
                 $obj3 = new $cls();
                 $obj3->hydrate($row, $startcol3);
                 Solicitud_estadoPeer::addInstanceToPool($obj3, $key3);
             }
             // if $obj3 already loaded
             // Add the $obj1 (Solicitud) to the collection in $obj3 (Solicitud_estado)
             $obj3->addSolicitud($obj1);
         }
         // if joined row is not null
         $results[] = $obj1;
     }
     $stmt->closeCursor();
     return $results;
 }