コード例 #1
0
 def metadata(self, datasetid):
     query = {'UID': datasetid}
     ds = dataset.query(self.context, **query)
     if ds:
         # we have a generator, let's pick the first result
         # metadata is extracted by query
         ds = next(ds, None)
     if ds is None:
         raise NotFound(self.context,  datasetid,  self.request)
     return ds
コード例 #2
0
 def query(self):
     # TODO: remove some parameters from request?
     #       e.g only matching with catalog indices
     #           only certain indices
     #       remove batching and internal parameters like brains
     query = self.request.form
     # TODO: should optimise this. e.g. return generator,
     objs = []
     for item in dataset.query(self.context, **query):
         objs.append(item)
     return objs
コード例 #3
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 def queryDataset(self, genre=None, layers=None):
     params = {'object_provides': IDataset.__identifier__}
     if genre:
         if not isinstance(genre, (tuple, list)):
             genre = (genre, )
         params['BCCDataGenre'] = {'query': genre,
                                   'operator': 'or'}
     if layers:
         if not isinstance(layers, (tuple, list)):
             layers = (layers, )
         params['BCCEnviroLayer'] = {'query': layers,
                                     'operator': 'and'}
     result = []
     for brain in dataset.query(self.context, True, **params):
         result.append({'uuid': brain.UID,
                        'title': brain.Title})
     return result
コード例 #4
0
 def getRAT(self, datasetid, layer=None):
     query = {'UID': datasetid}
     dsbrain = dataset.query(self.context, brains=True, **query)
     if dsbrain:
         # get first brain from list
         dsbrain = next(dsbrain, None)
     if not dsbrain:
         raise NotFound(self.context, datasetid, self.request)
     md = IBCCVLMetadata(dsbrain.getObject())
     rat = md.get('layers', {}).get(layer, {}).get('rat')
     # if we have a rat, let's try and parse it
     if rat:
         try:
             rat = json.loads(unicode(rat))
         except Exception as e:
             LOG.warning("Couldn't decode Raster Attribute Table from metadata. %s: %s", self.context, repr(e))
             rat = None
     return rat