Fix parsing of doubles to conform to xsd:double spec

datahost-ld-openapi/env/test/resources/test-inputs/revision/invalid-double-column.csv

@@ -1,3 +1,3 @@
 Year,Double,Other Double,Comment
 1980,100.10,11.0,this row is ok
-1980,101,12.0,this row has a number without a decimal in 2nd column
+1980,nan,12.0,this row has an invalid xsd:double NaN literal in it

datahost-ld-openapi/env/test/resources/test-inputs/revision/one-row-invalid-double.csv

@@ -1,2 +1,2 @@
 Year,Double,Other Double,Comment
-1999,100,10.0,this row has a double without a decimal point
+1999,nan,10.0,this row has an incorrectly formatted xsd:double NaN value in it

datahost-ld-openapi/src/tpximpact/datahost/ldapi/util/data/validation.clj

@@ -238,7 +238,10 @@
 (defn parse-double*
   "Returns a double or nil."
   [v]
-  (XMLDatatypeUtil/parseDouble v))
+  (try
+    (XMLDatatypeUtil/parseDouble v)
+    (catch NumberFormatException ex
+      nil)))
 
 (defn- datatype+parse-fn
   "Returns a tuple of [datatype parse-fn] as required

datahost-ld-openapi/test/tpximpact/datahost/ldapi/util/data/validation_test.clj

@@ -128,4 +128,4 @@
           (let [ex (try (data.validation/as-dataset csv {:enforce-schema row-schema})
                         (catch clojure.lang.ExceptionInfo ex
                           ex))]
-            (is (= {"Double" ["100"]} (:error-samples (ex-data ex))))))))))
+            (is (= {"Double" ["nan"]} (:error-samples (ex-data ex))))))))))