def dataset(self, args):
assert len(args) in (1,2)
namespace, name = args[0]
dataset = DBDataset.get(self.DB, namespace, name)
meta_expression = None if len(args) < 2 else args[1]
condition = None if not meta_expression else self.meta_exp_to_sql(meta_expression)
files = dataset.list_files(condition=condition, with_metadata=True)
return files
def dataset(self, args, meta, provenance=None):
assert len(args) == 2
dataset_name, meta_exp = args
namespace, name = dataset_name.M
dataset = DBDataset.get(self.DB, namespace, name)
keep_meta = meta["keep_meta"]
files = dataset.list_files(condition=meta_exp,
relationship="self" if provenance is None else provenance,
with_metadata=keep_meta)
#print ("Evaluator.dataset: files:", files)
assert isinstance(files, DBFileSet)
return files
def dataset(self, args, value, provenance=None):
assert len(args) == 2
dataset_name, meta_exp = args
namespace, name = dataset_name.V
dataset = DBDataset.get(self.DB, namespace, name)
condition = None if meta_exp is None else self.meta_exp_to_sql(
meta_exp)
#print("dataset: condition:", condition)
files = dataset.list_files(
condition=condition,
relationship="self" if provenance is None else provenance,
with_metadata=True)
#print ("Evaluator.dataset: files:", files)
assert isinstance(files, DBFileSet)
return files