///////////////////////////////////////////////////////////////////////
#region ICloneable Members
/// <summary>
/// Creates a deep copy of the object.
/// </summary>
public virtual object Clone()
{
TsCDaBrowseFilters clone = (TsCDaBrowseFilters)MemberwiseClone();
clone.PropertyIDs = (TsDaPropertyID[])((PropertyIDs != null) ? PropertyIDs.Clone() : null);
return(clone);
}
/// <summary>
/// Saves the parameters for an incomplete browse information.
/// </summary>
public TsCDaBrowsePosition(OpcItem itemId, TsCDaBrowseFilters filters)
{
if (filters == null)
{
throw new ArgumentNullException(nameof(filters));
}
itemId_ = (OpcItem)itemId?.Clone();
browseFilters_ = (TsCDaBrowseFilters)filters.Clone();
}
///////////////////////////////////////////////////////////////////////
#region Constructors, Destructor, Initialization
/// <summary>
/// Saves the parameters for an incomplete browse information.
/// </summary>
public TsCDaBrowsePosition(OpcItem itemID, TsCDaBrowseFilters filters)
{
if (filters == null)
{
throw new ArgumentNullException("Filters");
}
_itemID = (itemID != null) ? (OpcItem)itemID.Clone() : null;
_filters = (TsCDaBrowseFilters)filters.Clone();
}
/// <summary>Fetches the children of a branch that meet the filter criteria.</summary>
/// <returns>The set of elements found.</returns>
/// <requirements>OPC XML-DA Server or OPC Data Access Server V2.x / V3.x</requirements>
/// <param name="itemID">The identifier of branch which is the target of the search.</param>
/// <param name="filters">The filters to use to limit the set of child elements returned.</param>
/// <param name="position">An object used to continue a browse that could not be completed.</param>
public TsCDaBrowseElement[] Browse(
OpcItem itemID,
TsCDaBrowseFilters filters,
out Da.TsCDaBrowsePosition position)
{
if (_server == null)
{
throw new NotConnectedException();
}
return(((ITsDaServer)_server).Browse(itemID, filters, out position));
}
/// <summary>Fetches the children of a branch that meet the filter criteria.</summary>
/// <returns>The set of elements found.</returns>
/// <requirements>OPC XML-DA Server or OPC Data Access Server V2.x / V3.x</requirements>
/// <param name="itemId">The identifier of branch which is the target of the search.</param>
/// <param name="filters">The filters to use to limit the set of child elements returned.</param>
/// <param name="position">An object used to continue a browse that could not be completed.</param>
public TsCDaBrowseElement[] Browse(
OpcItem itemId,
TsCDaBrowseFilters filters,
out TsCDaBrowsePosition position)
{
LicenseHandler.ValidateFeatures(LicenseHandler.ProductFeature.DataAccess);
if (Server == null)
{
throw new NotConnectedException();
}
return(((ITsDaServer)Server).Browse(itemId, filters, out position));
}
/// <summary>Fetches all the childrens of the root branch that meet the filter criteria.</summary>
/// <returns>The set of elements found.</returns>
/// <requirements>OPC XML-DA Server or OPC Data Access Server V2.x / V3.x</requirements>
/// <param name="filters">The filters to use to limit the set of child elements returned.</param>
private TsCDaBrowseElement[] Browse(
TsCDaBrowseFilters filters)
{
if (_server == null)
{
throw new NotConnectedException();
}
Da.TsCDaBrowsePosition position;
List <TsCDaBrowseElement> elementsList = new List <TsCDaBrowseElement>();
TsCDaBrowseElement[] elements = ((ITsDaServer)_server).Browse(null, filters, out position);
if (elements != null)
{
Browse(elements, filters, ref elementsList);
}
return(elementsList.ToArray());
}
/// <summary>Fetches all the children of the root branch that meet the filter criteria.</summary>
/// <returns>The set of elements found.</returns>
/// <requirements>OPC Data Access Server V2.x / V3.x</requirements>
/// <param name="filters">The filters to use to limit the set of child elements returned.</param>
private TsCDaBrowseElement[] Browse(
TsCDaBrowseFilters filters)
{
LicenseHandler.ValidateFeatures(LicenseHandler.ProductFeature.DataAccess);
if (Server == null)
{
throw new NotConnectedException();
}
TsCDaBrowsePosition position;
List <TsCDaBrowseElement> elementsList = new List <TsCDaBrowseElement>();
TsCDaBrowseElement[] elements = ((ITsDaServer)Server).Browse(null, filters, out position);
if (elements != null)
{
Browse(elements, filters, ref elementsList);
}
return(elementsList.ToArray());
}
private void Browse(TsCDaBrowseElement[] elements, TsCDaBrowseFilters filters, ref List <TsCDaBrowseElement> elementsList)
{
Da.TsCDaBrowsePosition position;
foreach (TsCDaBrowseElement element in elements)
{
if (element.HasChildren)
{
OpcItem itemID = new OpcItem(element.ItemPath, element.ItemName);;
TsCDaBrowseElement[] childElements = ((ITsDaServer)_server).Browse(itemID, filters, out position);
if (childElements != null)
{
Browse(childElements, filters, ref elementsList);
}
}
else
{
elementsList.Add(element);
}
}
}
private void Browse(TsCDaBrowseElement[] elements, TsCDaBrowseFilters filters, ref List <TsCDaBrowseElement> elementsList)
{
LicenseHandler.ValidateFeatures(LicenseHandler.ProductFeature.DataAccess);
TsCDaBrowsePosition position;
foreach (TsCDaBrowseElement element in elements)
{
if (element.HasChildren)
{
OpcItem itemId = new OpcItem(element.ItemPath, element.ItemName);
TsCDaBrowseElement[] childElements = ((ITsDaServer)Server).Browse(itemId, filters, out position);
if (childElements != null)
{
Browse(childElements, filters, ref elementsList);
}
}
else
{
elementsList.Add(element);
}
}
}
