Update dataset classes to use label class

app/api/views/upload/dataset.py

@@ -1,16 +1,18 @@
 import csv
 import json
-from typing import Any, Dict, Iterator, List, Optional
+from typing import Dict, Iterator, List, Optional, Type
 
 import pyexcel
 
+from .label import Label
+
 
 class Record:
 
     def __init__(self,
                  filename: str,
                  data: str = '',
-                 label: Any = None,
+                 label: List[Label] = None,
                  metadata: Optional[Dict] = None):
         if metadata is None:
             metadata = {}
@@ -27,11 +29,13 @@ class Dataset:
 
     def __init__(self,
                  filenames: List[str],
+                 label_class: Type[Label],
                  encoding: Optional[str] = None,
                  column_data: str = 'text',
                  column_label: str = 'label',
                  **kwargs):
         self.filenames = filenames
+        self.label_class = label_class
         self.encoding = encoding
         self.column_data = column_data
         self.column_label = column_label
@@ -51,6 +55,7 @@ class Dataset:
         data = row.pop(self.column_data)
         label = row.pop(self.column_label, [])
         label = [label] if isinstance(label, str) else label
+        label = [self.label_class.parse(o) for o in label]
         record = Record(filename=filename, data=data, label=label, metadata=row)
         return record
 
@@ -126,7 +131,8 @@ class FastTextDataset(Dataset):
                 tokens = []
                 for token in line.rstrip().split(' '):
                     if token.startswith('__label__'):
-                        labels.append(token[len('__label__'):])
+                        label_name = token[len('__label__'):]
+                        labels.append(self.label_class.parse(label_name))
                     else:
                         tokens.append(token)
                 data = ' '.join(tokens)