/// <summary>
/// Initializes a new instance of the <see cref="DaItemState"/> class.
/// </summary>
/// <param name="configuration">The configuration.</param>
/// <param name="itemId">The item id.</param>
/// <param name="attribute">The attribute.</param>
/// <param name="namespaceIndex">Index of the namespace.</param>
public HdaAttributeState(
ComHdaClientConfiguration configuration,
string itemId,
HdaAttribute attribute,
ushort namespaceIndex)
:
base(null)
{
m_itemId = itemId;
m_attribute = attribute;
this.NodeId = HdaModelUtils.ConstructIdForHdaItemAttribute(itemId, attribute.Id, namespaceIndex);
this.SymbolicName = attribute.Id.ToString();
this.Description = attribute.Description;
this.AccessLevel = AccessLevels.CurrentRead;
this.UserAccessLevel = AccessLevels.CurrentRead;
this.MinimumSamplingInterval = MinimumSamplingIntervals.Indeterminate;
this.Historizing = false;
this.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.HasProperty;
this.TypeDefinitionId = Opc.Ua.VariableTypeIds.PropertyType;
this.Value = null;
this.StatusCode = StatusCodes.BadWaitingForInitialData;
bool isConfigItem = false;
// handle built-in properties.
switch (attribute.Id)
{
default:
{
bool isArray = false;
this.BrowseName = new QualifiedName(this.SymbolicName, namespaceIndex);
this.DisplayName = attribute.Name;
this.DataType = ComUtils.GetDataTypeId(attribute.DataType, out isArray);
this.ValueRank = (isArray)?ValueRanks.OneDimension:ValueRanks.Scalar;
break;
}
case Constants.OPCHDA_ENG_UNITS:
{
this.BrowseName = Opc.Ua.BrowseNames.EngineeringUnits;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.EUInformation;
this.ValueRank = ValueRanks.Scalar;
break;
}
case Constants.OPCHDA_NORMAL_MAXIMUM:
{
this.BrowseName = Opc.Ua.BrowseNames.EURange;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.Range;
this.ValueRank = ValueRanks.Scalar;
break;
}
case Constants.OPCHDA_HIGH_ENTRY_LIMIT:
{
this.BrowseName = Opc.Ua.BrowseNames.InstrumentRange;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.Range;
this.ValueRank = ValueRanks.Scalar;
break;
}
case Constants.OPCHDA_STEPPED:
{
this.BrowseName = Opc.Ua.BrowseNames.Stepped;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.Boolean;
this.ValueRank = ValueRanks.Scalar;
isConfigItem = true;
break;
}
case Constants.OPCHDA_DERIVE_EQUATION:
{
this.BrowseName = Opc.Ua.BrowseNames.Definition;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.String;
this.ValueRank = ValueRanks.Scalar;
isConfigItem = true;
break;
}
case Constants.OPCHDA_MIN_TIME_INT:
{
this.BrowseName = Opc.Ua.BrowseNames.MinTimeInterval;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.Duration;
this.ValueRank = ValueRanks.Scalar;
isConfigItem = true;
break;
}
case Constants.OPCHDA_MAX_TIME_INT:
{
this.BrowseName = Opc.Ua.BrowseNames.MaxTimeInterval;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.Duration;
this.ValueRank = ValueRanks.Scalar;
isConfigItem = true;
break;
}
case Constants.OPCHDA_EXCEPTION_DEV:
{
this.BrowseName = Opc.Ua.BrowseNames.ExceptionDeviation;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.Double;
this.ValueRank = ValueRanks.Scalar;
isConfigItem = true;
break;
}
case Constants.OPCHDA_EXCEPTION_DEV_TYPE:
{
this.BrowseName = Opc.Ua.BrowseNames.ExceptionDeviationFormat;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.ExceptionDeviationFormat;
this.ValueRank = ValueRanks.Scalar;
isConfigItem = true;
break;
}
}
// set the parent id.
NodeId parentId = null;
if (isConfigItem)
{
parentId = HdaParsedNodeId.Construct(HdaModelUtils.HdaItemConfiguration, itemId, null, namespaceIndex);
}
else
{
parentId = HdaModelUtils.ConstructIdForHdaItem(itemId, namespaceIndex);
}
this.AddReference(ReferenceTypeIds.HasProperty, true, parentId);
}
/// <summary>
/// Gets the supported attributes.
/// </summary>
public HdaAttribute[] GetSupportedAttributes()
{
string methodName = "IOPCHDA_Server.GetItemAttributes";
int pdwCount;
IntPtr ppdwAttrID;
IntPtr ppszAttrName;
IntPtr ppszAttrDesc;
IntPtr ppvtAttrDataType;
try
{
IOPCHDA_Server server = BeginComCall<IOPCHDA_Server>(methodName, true);
server.GetItemAttributes(
out pdwCount,
out ppdwAttrID,
out ppszAttrName,
out ppszAttrDesc,
out ppvtAttrDataType);
}
catch (Exception e)
{
ComCallError(methodName, e);
return null;
}
finally
{
EndComCall(methodName);
}
int[] attributeIds = ComUtils.GetInt32s(ref ppdwAttrID, pdwCount, true);
string[] names = ComUtils.GetUnicodeStrings(ref ppszAttrName, pdwCount, true);
string[] descriptions = ComUtils.GetUnicodeStrings(ref ppszAttrDesc, pdwCount, true);
short[] datatypes = ComUtils.GetInt16s(ref ppvtAttrDataType, pdwCount, true);
HdaAttribute[] results = new HdaAttribute[pdwCount];
for (int ii = 0; ii < results.Length; ii++)
{
HdaAttribute result = results[ii] = new HdaAttribute();
result.Id = Utils.ToUInt32(attributeIds[ii]);
result.Name = names[ii];
result.Description = descriptions[ii];
result.DataType = datatypes[ii];
}
return results;
}
/// <summary>
/// Initializes a new instance of the <see cref="DaItemState"/> class.
/// </summary>
/// <param name="configuration">The configuration.</param>
/// <param name="itemId">The item id.</param>
/// <param name="attribute">The attribute.</param>
/// <param name="namespaceIndex">Index of the namespace.</param>
public HdaAttributeState(
ComHdaClientConfiguration configuration,
string itemId,
HdaAttribute attribute,
ushort namespaceIndex)
:
base(null)
{
m_itemId = itemId;
m_attribute = attribute;
this.NodeId = HdaModelUtils.ConstructIdForHdaItemAttribute(itemId, attribute.Id, namespaceIndex);
this.SymbolicName = attribute.Id.ToString();
this.Description = attribute.Description;
this.AccessLevel = AccessLevels.CurrentRead;
this.UserAccessLevel = AccessLevels.CurrentRead;
this.MinimumSamplingInterval = MinimumSamplingIntervals.Indeterminate;
this.Historizing = false;
this.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.HasProperty;
this.TypeDefinitionId = Opc.Ua.VariableTypeIds.PropertyType;
this.Value = null;
this.StatusCode = StatusCodes.BadWaitingForInitialData;
bool isConfigItem = false;
// handle built-in properties.
switch (attribute.Id)
{
default:
{
bool isArray = false;
this.BrowseName = new QualifiedName(this.SymbolicName, namespaceIndex);
this.DisplayName = attribute.Name;
this.DataType = ComUtils.GetDataTypeId(attribute.DataType, out isArray);
this.ValueRank = (isArray)?ValueRanks.OneDimension:ValueRanks.Scalar;
break;
}
case Constants.OPCHDA_ENG_UNITS:
{
this.BrowseName = Opc.Ua.BrowseNames.EngineeringUnits;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.EUInformation;
this.ValueRank = ValueRanks.Scalar;
break;
}
case Constants.OPCHDA_NORMAL_MAXIMUM:
{
this.BrowseName = Opc.Ua.BrowseNames.EURange;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.Range;
this.ValueRank = ValueRanks.Scalar;
break;
}
case Constants.OPCHDA_HIGH_ENTRY_LIMIT:
{
this.BrowseName = Opc.Ua.BrowseNames.InstrumentRange;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.Range;
this.ValueRank = ValueRanks.Scalar;
break;
}
case Constants.OPCHDA_STEPPED:
{
this.BrowseName = Opc.Ua.BrowseNames.Stepped;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.Boolean;
this.ValueRank = ValueRanks.Scalar;
isConfigItem = true;
break;
}
case Constants.OPCHDA_DERIVE_EQUATION:
{
this.BrowseName = Opc.Ua.BrowseNames.Definition;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.String;
this.ValueRank = ValueRanks.Scalar;
isConfigItem = true;
break;
}
case Constants.OPCHDA_MIN_TIME_INT:
{
this.BrowseName = Opc.Ua.BrowseNames.MinTimeInterval;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.Duration;
this.ValueRank = ValueRanks.Scalar;
isConfigItem = true;
break;
}
case Constants.OPCHDA_MAX_TIME_INT:
{
this.BrowseName = Opc.Ua.BrowseNames.MaxTimeInterval;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.Duration;
this.ValueRank = ValueRanks.Scalar;
isConfigItem = true;
break;
}
case Constants.OPCHDA_EXCEPTION_DEV:
{
this.BrowseName = Opc.Ua.BrowseNames.ExceptionDeviation;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.Double;
this.ValueRank = ValueRanks.Scalar;
isConfigItem = true;
break;
}
case Constants.OPCHDA_EXCEPTION_DEV_TYPE:
{
this.BrowseName = Opc.Ua.BrowseNames.ExceptionDeviationFormat;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.ExceptionDeviationFormat;
this.ValueRank = ValueRanks.Scalar;
isConfigItem = true;
break;
}
}
// set the parent id.
NodeId parentId = null;
if (isConfigItem)
{
parentId = HdaParsedNodeId.Construct(HdaModelUtils.HdaItemConfiguration, itemId, null, namespaceIndex);
}
else
{
parentId = HdaModelUtils.ConstructIdForHdaItem(itemId, namespaceIndex);
}
this.AddReference(ReferenceTypeIds.HasProperty, true, parentId);
}