#137: Basic implementation of GET endpoint for entities

- Implementation for the Python ICAT backend
- This implementation ignores any filter parameters in the request as this haven't been implemented for the Python ICAT backend. As a result, this endpoint just gets all the records for a specified entity

common/python_icat_backend.py

@@ -7,7 +7,7 @@
 from common.helpers import queries_records
 from common.python_icat_helpers import requires_session_id, get_session_details_helper, logout_icat_client, \
                                        refresh_client_session, get_entity_by_id, update_entity_by_id, \
-                                       delete_entity_by_id
+                                       delete_entity_by_id, get_entity_with_filters
 from common.config import config
 from common.exceptions import AuthenticationError
 from common.models.db_models import SESSION
@@ -56,7 +56,7 @@ def logout(self, session_id):
     @requires_session_id
     @queries_records
     def get_with_filters(self, session_id, table, filters):
-        pass
+        return get_entity_with_filters(self.client, table.__name__, filters)
 
     @requires_session_id
     @queries_records

common/python_icat_helpers.py

@@ -319,3 +319,14 @@ def update_entity_by_id(client, table_name, id, new_data):
     # The record is re-obtained from Python ICAT (rather than using entity_id_data) to show to the
     # user whether the change has actually been applied
     return get_entity_by_id(client, table_name, id, True)
+
+
+def get_entity_with_filters(client, table_name, filters):
+    selected_entity_name = get_python_icat_entity_name(client, table_name)
+    query = construct_icat_query(client, selected_entity_name)
+    data = execute_icat_query(client, query, True)
+
+    if data == []:
+        raise MissingRecordError("No results found")
+
+    return data