+def check_poolfile(filename, filesize, md5sum, location_id, session=None):
+ """
+ Returns a tuple:
+ (ValidFileFound [boolean or None], PoolFile object or None)
+
+ @type filename: string
+ @param filename: the filename of the file to check against the DB
+
+ @type filesize: int
+ @param filesize: the size of the file to check against the DB
+
+ @type md5sum: string
+ @param md5sum: the md5sum of the file to check against the DB
+
+ @type location_id: int
+ @param location_id: the id of the location to look in
+
+ @rtype: tuple
+ @return: Tuple of length 2.
+ If more than one file found with that name:
+ (None, None)
+ If valid pool file found: (True, PoolFile object)
+ If valid pool file not found:
+ (False, None) if no file found
+ (False, PoolFile object) if file found with size/md5sum mismatch
+ """
+
+ if session is None:
+ session = DBConn().session()
+
+ q = session.query(PoolFile).filter_by(filename=filename)
+ q = q.join(Location).filter_by(location_id=location_id)
+
+ if q.count() > 1:
+ return (None, None)
+ if q.count() < 1:
+ return (False, None)
+
+ obj = q.one()
+ if obj.md5sum != md5sum or obj.filesize != filesize:
+ return (False, obj)
+
+ return (True, obj)
+
+__all__.append('check_poolfile')
+
+def get_poolfile_by_id(file_id, session=None):
+ """
+ Returns a PoolFile objects or None for the given id
+
+ @type file_id: int
+ @param file_id: the id of the file to look for
+
+ @rtype: PoolFile or None
+ @return: either the PoolFile object or None
+ """
+
+ if session is None:
+ session = DBConn().session()
+
+ q = session.query(PoolFile).filter_by(file_id=file_id)
+
+ if q.count() > 0:
+ return q.one()
+
+ return None
+
+__all__.append('get_poolfile_by_id')
+
+