Change in 8.1.13 for writing to Dataset Tag types with writeBlocking

Ignition
1

I’ve just updated to 8.1.13 and it seems to handle writing to Dataset tag types differently than previously and I am wondering if its a bug or perhaps me utilizing a bad practice.

Previously I created a dataset in a script by using system.dataset.toDataSet(headers,data) and then I could use writeBlocking to set that value into a Dataset tag. Now, however, I get the following error: Error_TypeConversion(“class java.util.UUID: Invalid DataType for Dataset.”).

I also tried converting it to a PyDataset as well, but got the same error. What has changed?

2

Writing datasets that contained non-serializable data, such as a UUID in your case, caused errors in tags on subsequent restarts. There’s now a check to prevent anything but a small whitelist of safe classes that can be serialized from being stored into a tag.

3

What would the best practice be then? Read from a dataset tag, modify and then write using that modified dataset?

4

The problem isn’t the method you’re using to do it, it’s that the data you’re trying to store isn’t allowed.

How or you creating/getting data for the dataset that has a java.util.UUID in it?

5

Ahh, got it thanks!

6

Hi Kevin,

that leads to the question:
Ist the list of allowed classes available somewhere?

I want to save the users modifications to a powertable configuration in a tag.
I tried to do itby writing the columnAttributesData into a dataset, which does not work…

Sincerely Alexej

7

This is the list, which for the most part just reflects the classes that back tag datatypes:

        public static final Set<Class<?>> STORABLE_TYPES = Set.of(
            Date.class,
            String.class,
            Integer.class,
            int.class,
            Long.class,
            long.class,
            Short.class,
            short.class,
            Float.class,
            float.class,
            Double.class,
            double.class,
            Boolean.class,
            boolean.class,
            Color.class,
            Timestamp.class,
            Byte.class,
            byte.class,
            Character.class,
            char.class
        );
8

Hmm,

thanks for the quick reply.

From what I can detect immediately, there is nothing in my dataset not fitting.

headers:
name, dateFormat, editable, filterable, hidden, horizontalAlignment, label, locale, numberFormat, prefix, sortable, suffix, treatAsBoolean, verticalAlignment, wrapText,

Column data:
Kst., dd.MM.yyyy HH:mm, False, False, False, -9, , en, 0, , True, , False, 0, False,
Art, dd.MM.yyyy HH:mm, False, False, True, -9, , en, 0, , True, , False, 0, False,
Start, dd.MM.yyyy HH:mm, False, False, False, -9, , en, 0, , True, , False, 0, False,
Mode, dd.MM.yyyy HH:mm, False, False, False, -9, , en, 0, , True, , False, 0, False,
Dauer, dd.MM.yyyy HH:mm, False, False, False, -9, , en, 0, , False, , False, 0, False,
Auftrag, dd.MM.yyyy HH:mm, False, False, False, -9, , en, 0, , True, , False, 0, False,
ID, dd.MM.yyyy HH:mm, False, False, True, -9, , None, 0, , True, , False, 0, False,
Ende, dd.MM.yyyy HH:mm, False, False, False, -9, , en, 0, , True, , False, 0, False,
sid, dd.MM.yyyy HH:mm, False, False, True, -9, , None, 0, , True, , False, 0, False,

STR , STR, BOOL, BOOL, BOOL, INT, STR, STR, STR, STR, BOOL, STR, BOOL, INT, BOOL

Is it possible to type-define the columns in the dataset?

Alexej

9

Is it a problem of some value in some cell or of the dataset as a whole?

CompletionException: com.inductiveautomation.ignition.client.gateway_interface.GatewayException: TagProviderRpc.write: Argument class not valid.
caused by GatewayException: TagProviderRpc.write: Argument class not valid.
caused by ClassNotFoundException: com.inductiveautomation.factorypmi.application.components.table.ColumnAttributesDataSet

Alexej

10

Seems to be the Locale …