/// <summary>
/// Creates a item result list from a set of items and sets the handles for use by the server.
/// </summary>
public ItemResult[] CreateItems(OpcItem[] items)
{
if (items == null)
{
return(null);
}
ItemResult[] results = new ItemResult[items.Length];
for (int ii = 0; ii < items.Length; ii++)
{
// initialize result with the item
results[ii] = new ItemResult((OpcItem)items[ii]);
// lookup the cached identifier.
ItemIdentifier itemID = this[items[ii].ServerHandle];
if (itemID != null)
{
results[ii].ItemName = itemID.ItemName;
results[ii].ItemPath = itemID.ItemName;
results[ii].ServerHandle = itemID.ServerHandle;
// update the client handle.
itemID.ClientHandle = items[ii].ClientHandle;
}
// check if handle not found.
if (results[ii].ServerHandle == null)
{
results[ii].ResultID = ResultID.Da.E_INVALIDHANDLE;
results[ii].DiagnosticInfo = null;
continue;
}
// replace client handle with internal handle.
results[ii].ClientHandle = items[ii].ServerHandle;
}
return(results);
}
public ItemResult[] AddItems(string[] itemIds)
{
int count = itemIds.Count();
if (count <= 0)
{
return(new ItemResult[0]);
}
// construct OpcItems
//OpcRcw.Da.OPCITEMDEF[] output = null;
OpcItem[] items = new OpcItem[count];
for (int ii = 0; ii < count; ii++)
{
items[ii] = new OpcItem();
items[ii].ItemName = itemIds[ii];
items[ii].ClientHandle = Guid.NewGuid();
}
// get opc item def
OpcRcw.Da.OPCITEMDEF[] definitions = GetOPCITEMDEFs(items);
// initialize output parameters.
IntPtr pResults = IntPtr.Zero;
IntPtr pErrors = IntPtr.Zero;
try
{
((IOPCItemMgt)m_group).AddItems(
count,
definitions,
out pResults,
out pErrors);
}
catch (Exception e)
{
throw OpcDa.Client.Com.Interop.CreateException("IOPCItemMgt.AddItems", e);
}
// unmarshal output parameters.
int[] serverHandles = this.GetItemResults(ref pResults, count, true);
int[] errors = OpcDa.Client.Com.Interop.GetInt32s(ref pErrors, count, true);
// construct result list.
ItemResult[] results = new ItemResult[count];
for (int ii = 0; ii < count; ii++)
{
// create a new ResultIDs.
results[ii] = new ItemResult(items[ii]);
// save server handles.
results[ii].ServerHandle = serverHandles[ii];
//results[ii].ClientHandle = definitions[ii].hClient;
// items created active by default.
if (!results[ii].ActiveSpecified)
{
results[ii].Active = true;
results[ii].ActiveSpecified = true;
}
// update result id.
results[ii].ResultID = OpcDa.Client.Com.Interop.GetResultID(errors[ii]);
results[ii].DiagnosticInfo = null;
// save client handle.
results[ii].ClientHandle = items[ii].ClientHandle;
// add new item table.
if (results[ii].ResultID.Succeeded())
{
lock (m_items)
{
m_items[items[ii].ClientHandle.GetHashCode()] = new ItemIdentifier(results[ii]);
}
// restore internal handle.
// results[ii].ClientHandle = definitions[ii].hClient;
}
}
// return results.
lock (m_items)
{
return((ItemResult[])m_items.ApplyFilters(m_filters, results));
}
}
