F nan in lists

Summary

Fix for https://gitlab.com/caosdb/caosdb-server/-/issues/127

Focus

The problem was actually only a question of the case of the "NaN" keyword in combination with lists of doubles. When inserting a list with "NaN" as a double value the old implementation of DoubleDatatype.parseValue(Object value) was working as expected. The new implementation just assures that also "nan" (lower case!) is accepted.

Test Environment

No manual testing needed. Integration tests are in caosdb-pyinttest!14 (merged)

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• All automated tests pass
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src/main/java/org/caosdb/server/datatype/DoubleDatatype.java

@@ -33,16 +33,19 @@ public class DoubleDatatype extends AbstractDatatype {
   public SingleValue parseValue(final Object value) throws Message {
     try {
       if (value instanceof GenericValue) {
-        return new GenericValue(Double.parseDouble(((GenericValue) value).toDatabaseString()));
+        return parse(((GenericValue) value).toDatabaseString());
       } else {
-        String valueStr = value.toString();
-        if (valueStr.toLowerCase().equals("nan")) {
-          valueStr = "NaN";
-        }
-        return new GenericValue(Double.parseDouble(valueStr));
+        return parse(value.toString());
       }
     } catch (final NumberFormatException e) {
       throw ServerMessages.CANNOT_PARSE_DOUBLE_VALUE;
     }
   }
+
+  private GenericValue parse(String valueStr) {
+    if (valueStr.toLowerCase().equals("nan")) {
+      valueStr = "NaN";
+    }
+    return new GenericValue(Double.parseDouble(valueStr));
+  }
 }