+ def convert_to_identifiers(self, obj={}):
+ """Translate key/value pairs to machine readable identifiers.
+ """
+ return self._convert_to_what(obj, 'identifier')
+
+ def convert_to_labels(self, obj={}):
+ """Translate key/value pairs to human readable labels.
+ """
+ return self._convert_to_what(obj, 'preferred_label')
+
+ def _convert_to_what(self, obj={}, what=None):
+ if not isinstance(obj, dict):
+ raise ValueError("obj must be a dict")
+ if what not in ['preferred_label', 'identifier']:
+ raise ValueError("what attr must be 'preferred_label' or 'identifier'")
+ r = {}
+ for k, v in obj.items():
+ # Key validation & lookup
+ key_found = False
+ if not isinstance(k, str):
+ raise VocabularyKeyError("key '{}' must be a string".format(k))
+ k_what, v_what = k, v
+ try:
+ k_what = getattr(self[k], what)
+ key_found = True
+ except KeyError:
+ if self.strict_keys:
+ raise VocabularyKeyError("key '{}' not found in vocabulary".format(k))
+
+ # Value validation & lookup
+ if isinstance(v, list):
+ v_what = []
+ for x in v:
+ if not isinstance(x, str):
+ raise VocabularyValueError("value '{}' for key '{}' must be a string".format(x, k))
+ try:
+ v_what.append(getattr(self[k][x], what))
+ except KeyError:
+ if self[k].strict:
+ raise VocabularyValueError("value '{}' not found for key '{}'".format(x, k))
+ v_what.append(x)
+ else:
+ if not isinstance(v, str):
+ raise VocabularyValueError("{} value '{}' for key '{}' must be a string".format(type(v).__name__, v, k))
+ try:
+ v_what = getattr(self[k][v], what)
+ except KeyError:
+ if key_found and self[k].strict:
+ raise VocabularyValueError("value '{}' not found for key '{}'".format(v, k))
+
+ r[k_what] = v_what
+ return r
+