ISSUE-766 | Added new attribute method

openaddr/conform.py

@@ -966,14 +966,12 @@ def row_function(sd, row, key, fxn):
         row = row_fxn_chain(sd, row, key, fxn)
     elif function == "first_non_empty":
         row = row_fxn_first_non_empty(sd, row, key, fxn)
+    elif function == "get":
+        row = row_fxn_get(sd, row, key, fxn)
 
     return row
 
 
-
-### Row-level conform code. Inputs and outputs are individual rows in a CSV file.
-### The input row may or may not be modified in place. The output row is always returned.
-
 def row_transform_and_convert(sd, row):
     "Apply the full conform transform and extract operations to a row"
 
@@ -1005,6 +1003,11 @@ def row_transform_and_convert(sd, row):
     row5 = row_calculate_hash(cache_fingerprint, row4)
     return row5
 
+
+
+### Row-level conform code. Inputs and outputs are individual rows in a CSV file.
+### The input row may or may not be modified in place. The output row is always returned.
+
 def fxn_smash_case(fxn):
     if "field" in fxn:
         fxn["field"] = fxn["field"].lower()
@@ -1198,6 +1201,12 @@ def row_fxn_first_non_empty(sd, row, key, fxn):
 
     return row
 
+def row_fxn_get(sd, row, key, fxn):
+    "Get single value from a field with many values"
+    row[var_types[key]] = row[fxn['field']][fxn['index']]
+
+    return row
+
 def row_canonicalize_unit_and_number(sd, row):
     "Canonicalize address unit and number"
     row["UNIT"] = (row["UNIT"] or '').strip()

openaddr/tests/conform.py

@@ -21,6 +21,7 @@
     row_fxn_postfixed_unit,
     row_fxn_remove_prefix, row_fxn_remove_postfix, row_fxn_chain,
     row_fxn_first_non_empty,
+    row_fxn_get,
     row_canonicalize_unit_and_number, conform_smash_case, conform_cli,
     convert_regexp_replace, conform_license,
     conform_attribution, conform_sharealike, normalize_ogr_filename_case,
@@ -1377,6 +1378,23 @@ def test_row_first_non_empty(self):
         d = row_fxn_first_non_empty(c, d, "street", c["conform"]["street"])
         self.assertEqual(e, d)
 
+    def test_row_fxn_get(self):
+        "New fxn get"
+        c = {
+            "conform": {
+                "region": {
+                    "function": "get",
+                    "field": "jednostkaAdministracyjna",
+                    "index": 1
+                }
+            }}
+        d = {"jednostkaAdministracyjna": ["Polska", "kujawsko-pomorskie", "brodnicki", "Bartnicza"]}
+        e = copy.deepcopy(d)
+
+        e.update({"OA:region": "kujawsko-pomorskie"})
+        d = row_fxn_get(c, d, "region", c["conform"]["region"])
+        self.assertEqual(e, d)
+
 class TestConformCli (unittest.TestCase):
     "Test the command line interface creates valid output files from test input"
     def setUp(self):