/// <summary>
/// Validates a read value id parameter.
/// </summary>
public static ServiceResult Validate(ReadValueId valueId)
{
// check for null structure.
if (valueId == null)
{
return(StatusCodes.BadStructureMissing);
}
// null node ids are always invalid.
if (valueId.NodeId == null)
{
return(StatusCodes.BadNodeIdInvalid);
}
// must be a legimate attribute value.
if (!Attributes.IsValid(valueId.AttributeId))
{
return(StatusCodes.BadAttributeIdInvalid);
}
// data encoding and index range is only valid for value attributes.
if (valueId.AttributeId != Attributes.Value)
{
if (!String.IsNullOrEmpty(valueId.IndexRange))
{
return(StatusCodes.BadIndexRangeNoData);
}
if (!QualifiedName.IsNull(valueId.DataEncoding))
{
return(StatusCodes.BadDataEncodingInvalid);
}
}
// initialize as empty.
valueId.ParsedIndexRange = NumericRange.Empty;
// parse the index range if specified.
if (!String.IsNullOrEmpty(valueId.IndexRange))
{
try
{
valueId.ParsedIndexRange = NumericRange.Parse(valueId.IndexRange);
}
catch (Exception e)
{
return(ServiceResult.Create(e, StatusCodes.BadIndexRangeInvalid, String.Empty));
}
}
else
{
valueId.ParsedIndexRange = NumericRange.Empty;
}
// passed basic validation.
return(null);
}
/// <summary>
/// Validates the operand (sets the ParsedBrowsePath and ParsedIndexRange properties).
/// </summary>
/// <param name="context">The context.</param>
/// <param name="index">The index.</param>
/// <returns>The result of the validation.</returns>
public override ServiceResult Validate(FilterContext context, int index)
{
m_validated = false;
// verify that the operand refers to a node in the type model.
if (!context.TypeTree.IsKnown(m_nodeId))
{
return(ServiceResult.Create(
StatusCodes.BadTypeDefinitionInvalid,
"AttributeOperand does not have a known TypeDefinitionId ({0}).",
m_nodeId));
}
// verify attribute id.
if (!Attributes.IsValid(m_attributeId))
{
return(ServiceResult.Create(
StatusCodes.BadAttributeIdInvalid,
"AttributeOperand does not specify a valid AttributeId ({0}).",
m_attributeId));
}
// initialize as empty.
m_parsedIndexRange = NumericRange.Empty;
// parse the index range.
if (!String.IsNullOrEmpty(m_indexRange))
{
try
{
m_parsedIndexRange = NumericRange.Parse(m_indexRange);
}
catch (Exception e)
{
return(ServiceResult.Create(
e,
StatusCodes.BadIndexRangeInvalid,
"AttributeOperand does not specify a valid BrowsePath ({0}).",
m_indexRange));
}
if (m_attributeId != Attributes.Value)
{
return(ServiceResult.Create(
StatusCodes.BadIndexRangeInvalid,
"AttributeOperand specifies an IndexRange for an Attribute other than Value ({0}).",
m_attributeId));
}
}
m_validated = true;
return(ServiceResult.Good);
}
/// <summary>
/// Validates a write value parameter.
/// </summary>
public static ServiceResult Validate(WriteValue value)
{
// check for null structure.
if (value == null)
{
return(StatusCodes.BadStructureMissing);
}
// null node ids are always invalid.
if (value.NodeId == null)
{
return(StatusCodes.BadNodeIdInvalid);
}
// must be a legimate attribute value.
if (!Attributes.IsValid(value.AttributeId))
{
return(StatusCodes.BadAttributeIdInvalid);
}
// initialize as empty.
value.ParsedIndexRange = NumericRange.Empty;
// parse the index range if specified.
if (!String.IsNullOrEmpty(value.IndexRange))
{
try
{
value.ParsedIndexRange = NumericRange.Parse(value.IndexRange);
}
catch (Exception e)
{
return(ServiceResult.Create(e, StatusCodes.BadIndexRangeInvalid, String.Empty));
}
// check that value provided is actually an array.
Array array = value.Value.Value as Array;
if (array == null)
{
return(StatusCodes.BadTypeMismatch);
}
NumericRange range = value.ParsedIndexRange;
// check that the number of elements to write matches the index range.
if (range.End >= 0 && (range.End - range.Begin != array.Length - 1))
{
return(StatusCodes.BadIndexRangeNoData);
}
// check for single element.
if (range.End < 0 && array.Length != 1)
{
return(StatusCodes.BadIndexRangeInvalid);
}
}
else
{
value.ParsedIndexRange = NumericRange.Empty;
}
// passed basic validation.
return(null);
}
/// <summary>
/// Validates a write value parameter.
/// </summary>
public static ServiceResult Validate(WriteValue value)
{
// check for null structure.
if (value == null)
{
return(StatusCodes.BadStructureMissing);
}
// null node ids are always invalid.
if (value.NodeId == null)
{
return(StatusCodes.BadNodeIdInvalid);
}
// must be a legimate attribute value.
if (!Attributes.IsValid(value.AttributeId))
{
return(StatusCodes.BadAttributeIdInvalid);
}
// initialize as empty.
value.ParsedIndexRange = NumericRange.Empty;
// parse the index range if specified.
if (!String.IsNullOrEmpty(value.IndexRange))
{
try
{
value.ParsedIndexRange = NumericRange.Parse(value.IndexRange);
}
catch (Exception e)
{
return(ServiceResult.Create(e, StatusCodes.BadIndexRangeInvalid, String.Empty));
}
if (value.ParsedIndexRange.SubRanges != null)
{
Matrix matrix = value.Value.Value as Matrix;
if (matrix == null)
{
// Check for String or ByteString arrays. Those DataTypes have special handling
// when using sub ranges.
bool isArrayWithValidDataType = value.Value.Value is Array &&
value.Value.WrappedValue.TypeInfo.BuiltInType == BuiltInType.String ||
value.Value.WrappedValue.TypeInfo.BuiltInType == BuiltInType.ByteString;
if (!isArrayWithValidDataType)
{
return(StatusCodes.BadTypeMismatch);
}
}
}
else
{
// check that value provided is actually an array.
Array array = value.Value.Value as Array;
string str = value.Value.Value as string;
if (array != null)
{
NumericRange range = value.ParsedIndexRange;
// check that the number of elements to write matches the index range.
if (range.End >= 0 && (range.End - range.Begin != array.Length - 1))
{
return(StatusCodes.BadIndexRangeNoData);
}
// check for single element.
if (range.End < 0 && array.Length != 1)
{
return(StatusCodes.BadIndexRangeInvalid);
}
}
else if (str != null)
{
NumericRange range = value.ParsedIndexRange;
// check that the number of elements to write matches the index range.
if (range.End >= 0 && (range.End - range.Begin != str.Length - 1))
{
return(StatusCodes.BadIndexRangeNoData);
}
// check for single element.
if (range.End < 0 && str.Length != 1)
{
return(StatusCodes.BadIndexRangeInvalid);
}
}
else
{
return(StatusCodes.BadTypeMismatch);
}
}
}
else
{
value.ParsedIndexRange = NumericRange.Empty;
}
// passed basic validation.
return(null);
}