public void TestFieldValueEscapedVariant(string fieldname, string foo, string expected)
{
TestContext.Out.WriteLine("Expected:");
_ = PrettifyAndValidateJson(expected);
using (var encodeable = new FooBarEncodeable(fieldname, foo))
{
var variant = new Variant(new ExtensionObject(encodeable));
// non reversible to save some space
var encoder = new JsonEncoder(Context, false);
encoder.WriteVariant(encodeable.FieldName, variant);
var encoded = encoder.CloseAndReturnText();
TestContext.Out.WriteLine("Encoded:");
TestContext.Out.WriteLine(encoded);
TestContext.Out.WriteLine("Formatted Encoded:");
_ = PrettifyAndValidateJson(encoded);
Assert.That(encoded, Is.EqualTo(expected));
}
}
/// <summary>
/// Encodes a dataSet field
/// </summary>
private void EncodeField(JsonEncoder encoder, Field field)
{
string fieldName = field.FieldMetaData.Name;
Variant valueToEncode = field.Value.WrappedValue;
// The StatusCode.Good value is not encoded cor3ectly then it shall be ommited
if (valueToEncode == StatusCodes.Good && m_fieldTypeEncoding != FieldTypeEncodingMask.Variant)
{
valueToEncode = Variant.Null;
}
switch (m_fieldTypeEncoding)
{
case FieldTypeEncodingMask.Variant:
// If the DataSetFieldContentMask results in a Variant representation,
// the field value is encoded as a Variant encoded using the reversible OPC UA JSON Data Encoding
// defined in OPC 10000-6.
encoder.ForceNamespaceUri = false;
encoder.WriteVariant(fieldName, valueToEncode, true);
break;
case FieldTypeEncodingMask.RawData:
// If the DataSetFieldContentMask results in a RawData representation,
// the field value is a Variant encoded using the non-reversible OPC UA JSON Data Encoding
// defined in OPC 10000-6
encoder.ForceNamespaceUri = true;
encoder.WriteVariant(fieldName, valueToEncode, false);
break;
case FieldTypeEncodingMask.DataValue:
DataValue dataValue = new DataValue();
dataValue.WrappedValue = valueToEncode;
if ((FieldContentMask & DataSetFieldContentMask.StatusCode) != 0)
{
dataValue.StatusCode = field.Value.StatusCode;
}
if ((FieldContentMask & DataSetFieldContentMask.SourceTimestamp) != 0)
{
dataValue.SourceTimestamp = field.Value.SourceTimestamp;
}
if ((FieldContentMask & DataSetFieldContentMask.SourcePicoSeconds) != 0)
{
dataValue.SourcePicoseconds = field.Value.SourcePicoseconds;
}
if ((FieldContentMask & DataSetFieldContentMask.ServerTimestamp) != 0)
{
dataValue.ServerTimestamp = field.Value.ServerTimestamp;
}
if ((FieldContentMask & DataSetFieldContentMask.ServerPicoSeconds) != 0)
{
dataValue.ServerPicoseconds = field.Value.ServerPicoseconds;
}
// If the DataSetFieldContentMask results in a DataValue representation,
// the field value is a DataValue encoded using the non-reversible OPC UA JSON Data Encoding
encoder.ForceNamespaceUri = true;
encoder.WriteDataValue(fieldName, dataValue, false);
break;
}
}