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Writing single values to a multidimensional array

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Writing single values to a multidimensional array

April 21, 2022
10:25, EEST

rocket science

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March 16, 2017

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Hi all,

I’m trying to find out how to write single (or a range) of values to a multidimensional array. For the tests I’m using the Unified Automation Demo Server with the node ‘AllDataTypesStatic/StaticInt32Matrix’ in the namepace DemoNodeManager.

I’m able to write a full multidimensional array like:

NodeId nodeId = NodeId.get(IdType.String, _client.getNamespaceTable().getIndex("DemoNodeManager"), "AllDataTypesStatic/StaticInt32Matrix");

Integer[][][] initial = {
{new Integer[] {0, 1, 2 }},
{new Integer[] {3, 4, 5 }},
{new Integer[] {6, 7, 8 }},
{new Integer[] {9, 10, 11}}
};

_client.writeValue(nodeId, initial);

So when reading this node I get the result as expected

Integer[][][] value = (Integer[][][]) dataValue.getValue().getValue();
LOGGER.info("readAndWriteMatrix(0): staticInt32Matrix value = " + Arrays.deepToString(value));

// readAndWriteMatrix(0): staticInt32Matrix value = [[[0, 1, 2]], [[3, 4, 5]], [[6, 7, 8]], [[9, 10, 11]]]

But what I did not find out yet is on how to modify just a single value or a range of values of the multidimensional array
e.g. just modify 0 to 100 or [0,1,2] to [100,101,102]

I’ve tried different stuff like the examples below, but I get the exceptions which I posted below each write operation:

_client.writeValue(nodeId, new Integer[] {100}, new NumericRange(new int[]{0,0,0}));

com.prosysopc.ua.StatusException: Bad_TypeMismatch (0x80740000) "The value supplied for the attribute is not of the same type as the attribute’s value." StatusCode=Bad_TypeMismatch (0x80740000) "The value supplied for the attribute is not of the same type as the attribute’s value."

_client.writeValue(nodeId, new Integer[][] {{100}}, new NumericRange(new int[]{0}));

com.prosysopc.ua.StatusException: Bad_IndexRangeNoData (0x80370000) "No data exists within the range of indexes specified." StatusCode=Bad_IndexRangeNoData (0x80370000) "No data exists within the range of indexes specified."

_client.writeValue(nodeId, new Integer[][] {{100}}, new NumericRange(new int[]{0,0,0}));

Integer[][][] write = {
{new Integer[] {200, 201}},
{new Integer[] {300, 301}},
{new Integer[] {400, 401}}
};
_client.writeValue(nodeId, write, new NumericRange(new int[]{0, 1}, new int[]{2, 3}, new int[]{4, 5}));

April 25, 2022
12:27, EEST

Matti Siponen

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February 11, 2020

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Hello,

We would recommend you to ask Unified Automation this question. The Bad_IndexRangeNoData StatusCode comes from their Server.

We could also check if we can replicate this error. Can you tell us which Unified Automation’s SDK’s Demo Server you’re testing with?

April 26, 2022
17:04, EEST

rocket science

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Hi,

seems to be the C++ SDK Demo Server

Value BuildInfo [
ProductUri=”urn:UnifiedAutomation:UaDemoserver”,
ManufacturerName=”Unified Automation GmbH”,
ProductName=”C++ SDK UaDemoserver”,
SoftwareVersion=”1.3.3″, BuildNumber=”206″,
BuildDate=”10/10/13 14:55:28.0000000 GMT”]

April 26, 2022
20:09, EEST

Jouni Aro

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December 21, 2011

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According to the BuildInfo, it looks pretty old, so the first thing I would recommend to do is to update it to a newer version. You should be able to download a new one from Unified Automation

May 4, 2022
13:25, EEST

rocket science

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I’ll try with a newer version of the DemoServer,
but in general, what would be the syntax to set a single value in a multidimensional array?

So e.g. if I have following array:

staticInt32Matrix value = [[[0, 1, 2]], [[3, 4, 5]], [[6, 7, 8]], [[9, 10, 11]]]

and I would like to set the value 4 to e.g. 44

then what would be the correct syntax for the client.writeValue(….) call?

May 4, 2022
14:01, EEST

Matti Siponen

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Hello,

You have a 3-dimensional array and the index of 4 is 0,1,1 or [0][1][1] depending on the notation you prefer. Indices in NumericRanges also start from 0, so the numeric range you need would be created by calling

new NumericRange(new int[] {0, 0}, new int[] {1, 1}, new int[] {1, 1})

This specifies a 3-dimensional NumericRange where the first and the last index for each dimension are same, which effectively selects exactly one entry from the entire 3-dimensional array.

You will also need to provide the value to be written as a 3-dimensional array where the length of each dimension is 1.

I attached a snippet from Wireshark demonstrating writing to a 3-dimensional array such that the value at index 0,1,0 is changed. The NumericRange is displayed as IndexRange in Wireshark. In your case, its value would be 0,1,1.

[0]: WriteValue
    NodeId: NodeId
        .... 0011 = EncodingMask: String (0x3)
        Namespace Index: 3
        Identifier String: Int32_3DMultidimensionalArray
    AttributeId: Value (0x0000000d)
    IndexRange: 0,1,0
    Value: DataValue
        EncodingMask: 0x01, has value
            .... ...1 = has value: True
            .... ..0. = has statuscode: False
            .... .0.. = has source timestamp: False
            .... 0... = has server timestamp: False
            ...0 .... = has source picoseconds: False
            ..0. .... = has server picoseconds: False
        Value: Variant
            Variant Type: Matrix of Int32 (0xc6)
            Int32: Array of Int32
                ArraySize: 1
                [0]: Int32: 5
            ArrayDimensions
                ArraySize: 3
                Int32: 1
                Int32: 1
                Int32: 1

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