/// <summary>
/// static function that read item property collection for selected item
/// </summary>
/// <param name="ItemName">item name to be read</param>
/// <param name="ds">data set with settings</param>
/// <returns>collection of properties</returns>
public static ItemPropertyCollection GetItemPropertiesCollection(string ItemName, ItemDecriberDataSet ds)
{
ItemPropertyCollection _ret = null;
if (ds != null)
{
_ret = new ItemPropertyCollection();
foreach (ItemDecriberDataSet.ItemsRow _row in ds.Items.Rows)
{
if (_row.ItemName == ItemName)
{
foreach (ItemDecriberDataSet.ItemPropertyRow row_property in _row.GetItemPropertyRows())
{
PropertyDescription prop_dsc = PropertyDescription.Find(new PropertyID(row_property.PropertyCode));
ItemProperty itemprop = new ItemProperty
{
ID = prop_dsc.ID,
Value = row_property.Value
};
_ret.Add(itemprop);
}
break;
}
}
}
return(_ret);
}
/// <summary>
/// Tag constructor
/// </summary>
/// <param name="myDSC">parameters from Tags table</param>
/// <param name="myStation">pointer to interface that allow to change priority of the station</param>
internal Tag(ComunicationNet.TagsRow myDSC, IStationState myStation)
: base(myDSC.Name, null, qualityBits.badNotConnected, (ItemAccessRights)myDSC.AccessRights, GetDataTypeFromConfig(myDSC))
{
switch ((StateTrigger)myDSC.StateTrigger)
{
case StateTrigger.StateHigh:
stateHihgTriger = true;
break;
case StateTrigger.StateLow:
stateLowTriger = true;
break;
default:
break;
}
stateMask = (int)myDSC.StateMask;
this.myStation = myStation;
this.EuType = Opc.Da.euType.noEnum;
ItemPropertyCollection itemPropertyCollection = new ItemPropertyCollection();
foreach (ComunicationNet.ItemPropertiesTableRow row_property in myDSC.GetItemPropertiesTableRows())
{
try
{
PropertyDescription prop_dsc =
PropertyDescription.Find(
new PropertyID(
new XmlQualifiedName(row_property.ID_Name_Name, row_property.ID_Name_Namespace)
));
ItemProperty _itemProperty = new ItemProperty
{
ID = prop_dsc.ID,
Value = row_property.Value
};
if (prop_dsc.ID != Opc.Da.Property.DATATYPE) //this property is managed differently
// as GetDataTypeFromConfig( myDSC )
// at the constructor
{
if (prop_dsc.ID == Opc.Da.Property.HI_LIMIT ||
prop_dsc.ID == Opc.Da.Property.LO_LIMIT ||
prop_dsc.ID == Opc.Da.Property.HIHI_LIMIT ||
prop_dsc.ID == Opc.Da.Property.LOLO_LIMIT ||
prop_dsc.ID == Opc.Da.Property.LOWEU ||
prop_dsc.ID == Opc.Da.Property.HIGHEU ||
prop_dsc.ID == Opc.Da.Property.SCANRATE
)
{
// this property contains double value
if (double.TryParse(row_property.Value, out double prop_value))
_itemProperty.Value = prop_value;
}
if (prop_dsc.ID == Opc.Da.Property.EUTYPE)
{
_itemProperty.Value = Opc.Da.euType.noEnum;
// this property contains vale from enum: Opc.Da.euType
foreach (Opc.Da.euType NEWeuType in Enum.GetValues(typeof(Opc.Da.euType)))
{
if (NEWeuType.ToString() == row_property.Value)
_itemProperty.Value = NEWeuType;
}
}
if (prop_dsc.ID == Opc.Da.Property.EUINFO)
{
//I assume that this is table of strings spited by ;
_itemProperty.Value = row_property.Value.Split(';');
}
itemPropertyCollection.Add(_itemProperty);
}
}
catch (Exception ex)
{
CommServerComponent.Tracer.TraceInformation(290, "DataBlock.Tag",
"Problem with property for item : " + myDSC.Name + ": " +
TraceEvent.GetMessageWithExceptionNameFromExceptionIncludingInnerException(ex));
}
}
try
{
this.AddProperties(itemPropertyCollection);
}
catch (Exception ex)
{
CommServerComponent.Tracer.TraceInformation(290, "DataBlock.Tag",
"Problem with many properties for item : " + myDSC.Name + ": " +
TraceEvent.GetMessageWithExceptionNameFromExceptionIncludingInnerException(ex));
}
}
/// <summary>
/// Returns the specified properties for the specified item.
/// </summary>
public Opc.Da.ItemPropertyCollection GetAvailableProperties(
PropertyID[] propertyIDs,
bool returnValues)
{
// initialize property collection.
ItemPropertyCollection properties = new ItemPropertyCollection();
properties.ItemName = m_itemID;
properties.ItemPath = null;
properties.ResultID = ResultID.S_OK;
properties.DiagnosticInfo = null;
// fetch information for each requested property.
foreach (PropertyID propertyID in propertyIDs)
{
ItemProperty property = new ItemProperty();
property.ID = propertyID;
// read the property value.
if (returnValues)
{
ItemValueResult result = Read(propertyID);
if (result.ResultID.Succeeded())
{
property.Value = result.Value;
}
property.ResultID = result.ResultID;
property.DiagnosticInfo = result.DiagnosticInfo;
}
// just validate the property id.
else
{
property.ResultID = ValidatePropertyID(propertyID, accessRights.readWritable);
}
// set status if one or more errors occur.
if (property.ResultID.Failed())
{
properties.ResultID = ResultID.S_FALSE;
}
else
{
// set property description.
PropertyDescription description = PropertyDescription.Find(propertyID);
if (description != null)
{
property.Description = description.Name;
property.DataType = description.Type;
}
// set property item id.
if (propertyID.Code >= ENGINEERINGUINTS && propertyID.Code <= TIMEZONE)
{
property.ItemName = m_itemID + ":" + propertyID.Code.ToString();
property.ItemPath = null;
}
}
// add to collection.
properties.Add(property);
}
// return collection.
return(properties);
}
/// <summary>
/// Returns the specified properties for the specified item.
/// </summary>
public Opc.Da.ItemPropertyCollection GetAvailableProperties(
PropertyID[] propertyIDs,
bool returnValues)
{
// initialize property collection.
ItemPropertyCollection properties = new ItemPropertyCollection();
properties.ItemName = m_itemID;
properties.ItemPath = null;
properties.ResultID = ResultID.S_OK;
properties.DiagnosticInfo = null;
// fetch information for each requested property.
foreach (PropertyID propertyID in propertyIDs)
{
ItemProperty property = new ItemProperty();
property.ID = propertyID;
// read the property value.
if (returnValues)
{
ItemValueResult result = Read(propertyID);
if (result.ResultID.Succeeded())
{
property.Value = result.Value;
}
property.ResultID = result.ResultID;
property.DiagnosticInfo = result.DiagnosticInfo;
}
// just validate the property id.
else
{
property.ResultID = ValidatePropertyID(propertyID, accessRights.readWritable);
}
// set status if one or more errors occur.
if (property.ResultID.Failed())
{
properties.ResultID = ResultID.S_FALSE;
}
else
{
// set property description.
PropertyDescription description = PropertyDescription.Find(propertyID);
if (description != null)
{
property.Description = description.Name;
property.DataType = description.Type;
}
// set property item id.
if (propertyID.Code >= ENGINEERINGUINTS && propertyID.Code <= TIMEZONE)
{
property.ItemName = m_itemID + ":" + propertyID.Code.ToString();
property.ItemPath = null;
}
}
// add to collection.
properties.Add(property);
}
// return collection.
return properties;
}