コード例 #1
0
 /**
  * Performs a DELETE on the database, given a TagInstance or Criteria object OR a primary key value.
  *
  * @param      mixed $values Criteria or TagInstance object or primary key or array of primary keys
  *              which is used to create the DELETE statement
  * @param      PropelPDO $con the connection to use
  * @return int The number of affected rows (if supported by underlying database driver).  This includes CASCADE-related rows
  *				if supported by native driver or if emulated using Propel.
  * @throws PropelException Any exceptions caught during processing will be
  *		 rethrown wrapped into a PropelException.
  */
 public static function doDelete($values, PropelPDO $con = null)
 {
     if ($con === null) {
         $con = Propel::getConnection(TagInstancePeer::DATABASE_NAME, Propel::CONNECTION_WRITE);
     }
     if ($values instanceof Criteria) {
         // invalidate the cache for all objects of this type, since we have no
         // way of knowing (without running a query) what objects should be invalidated
         // from the cache based on this Criteria.
         TagInstancePeer::clearInstancePool();
         // rename for clarity
         $criteria = clone $values;
     } elseif ($values instanceof TagInstance) {
         // it's a model object
         // invalidate the cache for this single object
         TagInstancePeer::removeInstanceFromPool($values);
         // create criteria based on pk values
         $criteria = $values->buildPkeyCriteria();
     } else {
         // it's a primary key, or an array of pks
         $criteria = new Criteria(TagInstancePeer::DATABASE_NAME);
         // primary key is composite; we therefore, expect
         // the primary key passed to be an array of pkey values
         if (count($values) == count($values, COUNT_RECURSIVE)) {
             // array is not multi-dimensional
             $values = array($values);
         }
         foreach ($values as $value) {
             $criterion = $criteria->getNewCriterion(TagInstancePeer::TAG_ID, $value[0]);
             $criterion->addAnd($criteria->getNewCriterion(TagInstancePeer::TAGGED_ITEM_ID, $value[1]));
             $criterion->addAnd($criteria->getNewCriterion(TagInstancePeer::MODEL_NAME, $value[2]));
             $criteria->addOr($criterion);
             // we can invalidate the cache for this single PK
             TagInstancePeer::removeInstanceFromPool($value);
         }
     }
     // Set the correct dbName
     $criteria->setDbName(TagInstancePeer::DATABASE_NAME);
     $affectedRows = 0;
     // initialize var to track total num of affected rows
     try {
         // use transaction because $criteria could contain info
         // for more than one table or we could emulating ON DELETE CASCADE, etc.
         $con->beginTransaction();
         $affectedRows += BasePeer::doDelete($criteria, $con);
         TagInstancePeer::clearRelatedInstancePool();
         $con->commit();
         return $affectedRows;
     } catch (Exception $e) {
         $con->rollBack();
         throw $e;
     }
 }