/// <summary>
/// Gets the elements.
/// </summary>
/// <param name="parentItemId">The parent item identifier.</param>
/// <param name="filter">The filter.</param>
/// <param name="propertiesQuery">The properties query.</param>
/// <returns></returns>
public override OpcDaBrowseElement[] GetElements(string parentItemId, OpcDaElementFilter filter = null,
OpcDaPropertiesQuery propertiesQuery = null)
{
OpcDaBrowseElement[] elements = base.GetElements(parentItemId, filter, propertiesQuery);
SavePathes(elements);
return elements;
}
/// <summary>
/// Gets the elements.
/// </summary>
/// <param name="parentItemId">The parent item identifier.</param>
/// <param name="filter">The filter.</param>
/// <param name="propertiesQuery">The properties query.</param>
/// <returns></returns>
public override OpcDaBrowseElement[] GetElements(string parentItemId, OpcDaElementFilter filter = null,
OpcDaPropertiesQuery propertiesQuery = null)
{
OpcDaBrowseElement[] elements = base.GetElements(parentItemId, filter, propertiesQuery);
SavePathes(elements);
return(elements);
}
/// <summary>
/// Browse the server using specified criteria.
/// </summary>
/// <param name="parentItemId">Indicates the item identifier from which browsing will begin. If the root branch is to be browsed then a null should be passed.</param>
/// <param name="filter">The filtering context.</param>
/// <param name="propertiesQuery">The properties query.</param>
/// <returns>
/// Array of browsed elements.
/// </returns>
/// <exception cref="System.AggregateException"></exception>
public OpcDaBrowseElement[] GetElements(string parentItemId, OpcDaElementFilter filter = null,
OpcDaPropertiesQuery propertiesQuery = null)
{
try
{
return(_browser3.GetElements(parentItemId, filter, propertiesQuery));
}
catch (Exception ex1)
{
Log.Warn("Failed to browse address space using IOPCBrowse (OPC DA 3.x).", ex1);
try
{
return(_browser2.GetElements(parentItemId, filter, propertiesQuery));
}
catch (Exception ex2)
{
Log.Warn("Failed to browse address space using IOPCBrowseServerAddressSpace (OPC DA 2.x).", ex2);
try
{
return(_browser1.GetElements(parentItemId, filter, propertiesQuery));
}
catch (Exception ex3)
{
Log.Warn("Failed to browse address space using IOPCBrowseServerAddressSpace (OPC DA 1.x).", ex2);
throw new AggregateException(ex3, ex2, ex1);
}
}
}
}
/// <summary>
/// Browse the server using specified criteria.
/// </summary>
/// <param name="parentItemId">Indicates the item identifier from which browsing will begin. If the root branch is to be browsed then a null should be passed.</param>
/// <param name="filter">The filtering context.</param>
/// <param name="propertiesQuery">The properties query.</param>
/// <returns>
/// Array of browsed elements.
/// </returns>
/// <exception cref="System.InvalidOperationException">Interface IOPCBrowseServerAddressSpace not supported.</exception>
virtual public OpcDaBrowseElement[] GetElements(string parentItemId, OpcDaElementFilter filter = null,
OpcDaPropertiesQuery propertiesQuery = null)
{
if (OpcBrowseServerAddressSpace == null)
throw new InvalidOperationException("Interface IOPCBrowseServerAddressSpace not supported.");
if (parentItemId == null)
parentItemId = string.Empty;
if (filter == null)
filter = new OpcDaElementFilter();
var elements = GetElementsImpl(parentItemId, filter);
if (propertiesQuery != null)
{
var properties = GetProperties(elements.Select(e => e.ItemId).ToArray(), propertiesQuery);
for (var i = 0; i < elements.Length; i++)
{
elements[i].ItemProperties = properties[i];
}
}
else
{
for (var i = 0; i < elements.Length; i++)
{
elements[i].ItemProperties = OpcDaItemProperties.CreateEmpty();
}
}
return elements;
}
/// <summary>
/// Browse the server using specified criteria.
/// </summary>
/// <param name="parentItemId">Indicates the item identifier from which browsing will begin. If the root branch is to be browsed then a null should be passed.</param>
/// <param name="filter">The filtering context.</param>
/// <param name="propertiesQuery">The properties query.</param>
/// <returns>
/// Array of browsed elements.
/// </returns>
/// <exception cref="System.AggregateException"></exception>
public OpcDaBrowseElement[] GetElements(string parentItemId, OpcDaElementFilter filter = null,
OpcDaPropertiesQuery propertiesQuery = null)
{
try
{
return _browser3.GetElements(parentItemId, filter, propertiesQuery);
}
catch (Exception ex1)
{
Log.Warn("Failed to browse address space using IOPCBrowse (OPC DA 3.x).", ex1);
try
{
return _browser2.GetElements(parentItemId, filter, propertiesQuery);
}
catch (Exception ex2)
{
Log.Warn("Failed to browse address space using IOPCBrowseServerAddressSpace (OPC DA 2.x).", ex2);
try
{
return _browser1.GetElements(parentItemId, filter, propertiesQuery);
}
catch (Exception ex3)
{
Log.Warn("Failed to browse address space using IOPCBrowseServerAddressSpace (OPC DA 1.x).", ex2);
throw new AggregateException(ex3, ex2, ex1);
}
}
}
}
/// <summary>
/// Browse the server using specified criteria.
/// </summary>
/// <param name="parentItemId">Indicates the item identifier from which browsing will begin. If the root branch is to be browsed then a null should be passed.</param>
/// <param name="filter">The filtering context.</param>
/// <param name="propertiesQuery">The properties query.</param>
/// <returns>
/// Array of browsed elements.
/// </returns>
/// <exception cref="System.InvalidOperationException">Browser isn't attached to com object.</exception>
public OpcDaBrowseElement[] GetElements(string parentItemId, OpcDaElementFilter filter = null,
OpcDaPropertiesQuery propertiesQuery = null)
{
if (OpcBrowse == null)
{
throw new InvalidOperationException("Browser isn't attached to com object.");
}
if (parentItemId == null)
{
parentItemId = string.Empty;
}
if (filter == null)
{
filter = new OpcDaElementFilter();
}
bool returnAllProperties;
bool returnPropertyValues;
IList <int> propertyIds;
if (propertiesQuery != null)
{
returnAllProperties = propertiesQuery.AllProperties;
returnPropertyValues = propertiesQuery.ReturnValues;
propertyIds = propertiesQuery.PropertyIds;
}
else
{
returnAllProperties = false;
returnPropertyValues = false;
propertyIds = new int[0];
}
var opcBrowseElements = OpcBrowse.Browse(parentItemId, filter.ElementType, filter.Name,
filter.VendorSpecific,
returnAllProperties, returnPropertyValues, propertyIds);
if (OpcConfiguration.EnableQuirks && opcBrowseElements.Length > 0 && returnAllProperties &&
NoPropertiesReturned(opcBrowseElements))
{
// bad server implementation of Browse. For example some versions of Matrikon simulation server
// all properties was requested but returned nothing.
// Requery properties with GetProperties
var properties = GetProperties(opcBrowseElements.Select(e => e.ItemId).ToArray(), propertiesQuery);
for (var i = 0; i < opcBrowseElements.Length; i++)
{
opcBrowseElements[i].ItemProperties = properties[i];
}
}
return(opcBrowseElements);
}
//Reads Data from OPC. Fills the Nodelist from PLC
internal IEnumerable <OpcDaBrowseElement> ReadDataToNodeList(string _subStringFromTagName) //e.g. "_CAP - for Capacity tag"
{
//Читаем список переменных из OCP-сервера. Фильтруем переменные-ветви и отбираем те, в именах которых содержится _subStringFromTagName (например "_CAP")
var opcDaElementFilter = new OpcDaElementFilter()
{
ElementType = OpcDaBrowseFilter.Branches
};
var browser = new OpcDaBrowserAuto(_opcServer);
var items = from s in browser.GetElements(_parentNodeDescriptor, opcDaElementFilter)
where s.Name.Contains(_subStringFromTagName)
select s;
return(items);
}
/// <summary>
/// Browse the server using specified criteria.
/// </summary>
/// <param name="parentItemId">Indicates the item identifier from which browsing will begin. If the root branch is to be browsed then a null should be passed.</param>
/// <param name="filter">The filtering context.</param>
/// <param name="propertiesQuery">The properties query.</param>
/// <returns>
/// Array of browsed elements.
/// </returns>
/// <exception cref="System.InvalidOperationException">Browser isn't attached to com object.</exception>
public OpcDaBrowseElement[] GetElements(string parentItemId, OpcDaElementFilter filter = null,
OpcDaPropertiesQuery propertiesQuery = null)
{
if (OpcBrowse == null)
throw new InvalidOperationException("Browser isn't attached to com object.");
if (parentItemId == null)
parentItemId = string.Empty;
if (filter == null)
filter = new OpcDaElementFilter();
bool returnAllProperties;
bool returnPropertyValues;
IList<int> propertyIds;
if (propertiesQuery != null)
{
returnAllProperties = propertiesQuery.AllProperties;
returnPropertyValues = propertiesQuery.ReturnValues;
propertyIds = propertiesQuery.PropertyIds;
}
else
{
returnAllProperties = false;
returnPropertyValues = false;
propertyIds = new int[0];
}
var opcBrowseElements = OpcBrowse.Browse(parentItemId, filter.ElementType, filter.Name,
filter.VendorSpecific,
returnAllProperties, returnPropertyValues, propertyIds);
if (OpcConfiguration.EnableQuirks && opcBrowseElements.Length > 0 && returnAllProperties &&
NoPropertiesReturned(opcBrowseElements))
{
// bad server implementation of Browse. For example some versions of Matrikon simulation server
// all properties was requested but returned nothing.
// Requery properties with GetProperties
var properties = GetProperties(opcBrowseElements.Select(e => e.ItemId).ToArray(), propertiesQuery);
for (var i = 0; i < opcBrowseElements.Length; i++)
{
opcBrowseElements[i].ItemProperties = properties[i];
}
}
return opcBrowseElements;
}
/// <summary>
/// Browse the server using specified criteria.
/// </summary>
/// <param name="parentItemId">Indicates the item identifier from which browsing will begin. If the root branch is to be browsed then a null should be passed.</param>
/// <param name="filter">The filtering context.</param>
/// <param name="propertiesQuery">The properties query.</param>
/// <returns>
/// Array of browsed elements.
/// </returns>
/// <exception cref="System.InvalidOperationException">Interface IOPCBrowseServerAddressSpace not supported.</exception>
virtual public OpcDaBrowseElement[] GetElements(string parentItemId, OpcDaElementFilter filter = null,
OpcDaPropertiesQuery propertiesQuery = null)
{
if (OpcBrowseServerAddressSpace == null)
{
throw new InvalidOperationException("Interface IOPCBrowseServerAddressSpace not supported.");
}
if (parentItemId == null)
{
parentItemId = string.Empty;
}
if (filter == null)
{
filter = new OpcDaElementFilter();
}
var elements = GetElementsImpl(parentItemId, filter);
if (propertiesQuery != null)
{
var properties = GetProperties(elements.Select(e => e.ItemId).ToArray(), propertiesQuery);
for (var i = 0; i < elements.Length; i++)
{
elements[i].ItemProperties = properties[i];
}
}
else
{
for (var i = 0; i < elements.Length; i++)
{
elements[i].ItemProperties = OpcDaItemProperties.CreateEmpty();
}
}
return(elements);
}
private OpcDaBrowseElement[] GetElementsImpl(string itemId, OpcDaElementFilter filter)
{
IEnumerable <OpcDaBrowseElement> elements;
var namespaceType = OpcBrowseServerAddressSpace.Organization;
VarEnum dataTypeFilter = TypeConverter.ToVarEnum(filter.DataType);
switch (namespaceType)
{
case OpcDaNamespaceType.Hierarchial:
ChangeBrowsePositionTo(itemId);
switch (filter.ElementType)
{
case OpcDaBrowseFilter.All:
var branches = OpcBrowseServerAddressSpace.BrowseOpcItemIds(OpcDaBrowseType.Branch,
filter.Name, dataTypeFilter,
filter.AccessRights)
.Select(CreateBranchBrowseElement);
var leafs = OpcBrowseServerAddressSpace.BrowseOpcItemIds(OpcDaBrowseType.Leaf, filter.Name,
dataTypeFilter,
filter.AccessRights)
.Select(CreateLeafBrowseElement);
elements = branches.Union(leafs);
break;
case OpcDaBrowseFilter.Branches:
elements = OpcBrowseServerAddressSpace.BrowseOpcItemIds(OpcDaBrowseType.Branch, filter.Name,
dataTypeFilter,
filter.AccessRights)
.Select(CreateBranchBrowseElement);
break;
case OpcDaBrowseFilter.Items:
elements = OpcBrowseServerAddressSpace.BrowseOpcItemIds(OpcDaBrowseType.Leaf, filter.Name,
dataTypeFilter,
filter.AccessRights)
.Select(CreateLeafBrowseElement);
break;
default:
throw new ArgumentOutOfRangeException();
}
break;
case OpcDaNamespaceType.Flat:
if (filter.ElementType == OpcDaBrowseFilter.Branches) // no branches in flat namespace
{
elements = Enumerable.Empty <OpcDaBrowseElement>();
}
else
{
elements = OpcBrowseServerAddressSpace.BrowseOpcItemIds(OpcDaBrowseType.Flat, filter.Name,
dataTypeFilter,
filter.AccessRights)
.Select(CreateLeafBrowseElement);
}
break;
default:
throw new ArgumentOutOfRangeException();
}
return(elements.ToArray());
}
private OpcDaBrowseElement[] GetElementsImpl(string itemId, OpcDaElementFilter filter)
{
IEnumerable<OpcDaBrowseElement> elements;
var namespaceType = OpcBrowseServerAddressSpace.Organization;
VarEnum dataTypeFilter = TypeConverter.ToVarEnum(filter.DataType);
switch (namespaceType)
{
case OpcDaNamespaceType.Hierarchial:
ChangeBrowsePositionTo(itemId);
switch (filter.ElementType)
{
case OpcDaBrowseFilter.All:
var branches = OpcBrowseServerAddressSpace.BrowseOpcItemIds(OpcDaBrowseType.Branch,
filter.Name, dataTypeFilter,
filter.AccessRights)
.Select(CreateBranchBrowseElement);
var leafs = OpcBrowseServerAddressSpace.BrowseOpcItemIds(OpcDaBrowseType.Leaf, filter.Name,
dataTypeFilter,
filter.AccessRights)
.Select(CreateLeafBrowseElement);
elements = branches.Union(leafs);
break;
case OpcDaBrowseFilter.Branches:
elements = OpcBrowseServerAddressSpace.BrowseOpcItemIds(OpcDaBrowseType.Branch, filter.Name,
dataTypeFilter,
filter.AccessRights)
.Select(CreateBranchBrowseElement);
break;
case OpcDaBrowseFilter.Items:
elements = OpcBrowseServerAddressSpace.BrowseOpcItemIds(OpcDaBrowseType.Leaf, filter.Name,
dataTypeFilter,
filter.AccessRights)
.Select(CreateLeafBrowseElement);
break;
default:
throw new ArgumentOutOfRangeException();
}
break;
case OpcDaNamespaceType.Flat:
if (filter.ElementType == OpcDaBrowseFilter.Branches) // no branches in flat namespace
{
elements = Enumerable.Empty<OpcDaBrowseElement>();
}
else
{
elements = OpcBrowseServerAddressSpace.BrowseOpcItemIds(OpcDaBrowseType.Flat, filter.Name,
dataTypeFilter,
filter.AccessRights)
.Select(CreateLeafBrowseElement);
}
break;
default:
throw new ArgumentOutOfRangeException();
}
return elements.ToArray();
}
