/// <summary>
/// Creates a new instance of a FilterDeclaration.
/// </summary>
public FilterDeclaration(FilterDeclaration declaration)
{
EventTypeId = declaration.EventTypeId;
Fields = new List <FilterDeclarationField>(declaration.Fields.Count);
for (int ii = 0; ii < declaration.Fields.Count; ii++)
{
Fields.Add(new FilterDeclarationField(declaration.Fields[ii]));
}
}
/// <summary>
/// Creates a new instance of a FilterDeclaration.
/// </summary>
public FilterDeclaration(TypeDeclaration eventType, FilterDeclaration template)
{
EventTypeId = eventType.NodeId;
Fields = new List <FilterDeclarationField>( );
foreach (InstanceDeclaration instanceDeclaration in eventType.Declarations)
{
if (instanceDeclaration.NodeClass == NodeClass.Method)
{
continue;
}
if (NodeId.IsNull(instanceDeclaration.ModellingRule))
{
continue;
}
FilterDeclarationField element = new FilterDeclarationField(instanceDeclaration);
Fields.Add(element);
// set reasonable defaults.
if (template == null)
{
if (instanceDeclaration.RootTypeId == Opc.Ua.ObjectTypeIds.BaseEventType && instanceDeclaration.BrowseName != Opc.Ua.BrowseNames.EventId)
{
element.DisplayInList = true;
}
}
// preserve filter settings.
else
{
foreach (FilterDeclarationField field in template.Fields)
{
if (field.InstanceDeclaration.BrowsePathDisplayText == element.InstanceDeclaration.BrowsePathDisplayText)
{
element.DisplayInList = field.DisplayInList;
element.FilterEnabled = field.FilterEnabled;
element.FilterOperator = field.FilterOperator;
element.FilterValue = field.FilterValue;
break;
}
}
}
}
}
