Search package improvements to retrieve documents with text searches from OpenSearch

Related to #12 (closed)

api/context.go

@@ -133,7 +133,12 @@ func (ctx apiContext) extract(name string, t reflect.Type, v reflect.Value) erro
 				return errors.Errorf("%s does not support >1 values(%v)", n, strings.Join(paramStrValues, ","))
 			}
 			//single value specified
-			if err := reflection.SetValue(v.Field(i), paramStrValues[0]); err != nil {
+			valueField := v.Field(i)
+			if valueField.Kind() == reflect.Ptr {
+				valueField.Set(reflect.New(valueField.Type().Elem()))
+				valueField = valueField.Elem()
+			}
+			if err := reflection.SetValue(valueField, paramStrValues[0]); err != nil {
 				return errors.Wrapf(err, "failed to set %s=%s", n, paramStrValues[0])
 			}
 		}