add WOQLQuery.date (#369)

* add WOQLQuery.date

Co-authored-by: Francesca-Bit <francesca@terminusdb.com>
Co-authored-by: Robin de Rooij <rderooij685@gmail.com>

Author: Francesca-Bit

terminusdb_client/tests/test_woqlQuery.py

@@ -1,4 +1,5 @@
 import pprint
+import datetime as dt
 
 from terminusdb_client.woqlquery.woql_query import WOQLQuery
 
@@ -247,6 +248,23 @@ def test_cast_method_literal(self):
         )
         assert woql_object1.to_dict() == woql_object2.to_dict()
 
+    def test_cast_method_datetime(self):
+        value = dt.datetime(2022, 10, 19, 14, 17, 12)
+        json_datetime = WOQLQuery().datetime(value)
+        json_datetime2 = WOQLQuery().literal("2022-10-19T14:17:12", "dateTime")
+        assert json_datetime == json_datetime2
+
+    def test_cast_method_date(self):
+        value = dt.date(2022, 10, 19)
+        json_datetime = WOQLQuery().date(value)
+        json_datetime2 = WOQLQuery().literal("2022-10-19", "date")
+        assert json_datetime == json_datetime2
+
+    def test_cast_method_boolean(self):
+        json_datetime = WOQLQuery().boolean(True)
+        json_datetime2 = WOQLQuery().literal(True, "boolean")
+        assert json_datetime == json_datetime2
+
     def test_cast_method_object(self):
         woql_object1 = WOQLQuery().cast(
             "my_int", "xsd:integer", "v:Duration_Cast", literal_type="owl:Thing"

terminusdb_client/woqlquery/woql_query.py

@@ -1153,7 +1153,7 @@ def datetime(self, input_obj):
         Parameters
         ----------
         input_obj : str
-            the given input dateTime object
+            the given input dateTime object or a datetime string format YYYY-MM-DDThh-mm-ssZ
 
         Returns
         -------
@@ -1166,6 +1166,25 @@ def datetime(self, input_obj):
         else:
             raise ValueError("Input need to be either string or a datetime object.")
 
+    def date(self, input_obj):
+        """Transforms the given date object into the proper json-ld form
+
+        Parameters
+        ----------
+        input_obj : str
+            the given input date object or a date string format YYYY-MM-DD
+
+        Returns
+        -------
+        dict
+        """
+        if isinstance(input_obj, dt.date):
+            return {"@type": "xsd:date", "@value": input_obj.isoformat()}
+        elif isinstance(input_obj, str):
+            return {"@type": "xsd:date", "@value": input_obj}
+        else:
+            raise ValueError("Input need to be either string or a date object.")
+
     def literal(self, input_val, input_type):
         if ":" not in input_type:
             input_type = "xsd:" + input_type