/// <summary>
/// Sets the filter.
/// </summary>
/// <param name="qualifiedName">Name of the qualified.</param>
/// <param name="isSource">if set to <c>true</c> if filtering by source.</param>
/// <returns></returns>
private bool SetFilter(string qualifiedName, bool isSource)
{
string methodName = "IOPCEventSubscriptionMgt.SetFilter";
try
{
IOPCEventSubscriptionMgt server = BeginComCall <IOPCEventSubscriptionMgt>(methodName, true);
string[] filter = null;
if (!String.IsNullOrEmpty(qualifiedName))
{
filter = new string[] { qualifiedName };
// need to use a wild card to include sub-areas.
if (!String.IsNullOrEmpty(m_separators))
{
filter = new string[m_separators.Length + 1];
filter[0] = qualifiedName;
for (int ii = 0; ii < m_separators.Length; ii++)
{
filter[ii + 1] = Utils.Format("{0}{1}*", qualifiedName, m_separators[ii]);
}
}
}
else
{
filter = new string[0];
}
server.SetFilter(
Constants.ALL_EVENTS,
0,
new int[0],
1,
1000,
(isSource)?0:filter.Length,
filter,
(!isSource)?0:filter.Length,
filter);
return(true);
}
catch (Exception e)
{
if (ComUtils.IsUnknownError(e, ResultIds.E_FAIL))
{
ComCallError(methodName, e);
}
return(false);
}
finally
{
EndComCall(methodName);
}
}
/// <summary>
/// Selects the returned attributes.
/// </summary>
/// <param name="categoryId">The category id.</param>
/// <param name="attributeIds">The attribute ids.</param>
/// <returns></returns>
private bool SelectReturnedAttributes(int categoryId, int[] attributeIds)
{
string methodName = "IOPCEventSubscriptionMgt.SelectReturnedAttributes";
try
{
IOPCEventSubscriptionMgt server = BeginComCall <IOPCEventSubscriptionMgt>(methodName, true);
server.SelectReturnedAttributes(categoryId, attributeIds.Length, attributeIds);
return(true);
}
catch (Exception e)
{
if (ComUtils.IsUnknownError(e, ResultIds.E_FAIL))
{
ComCallError(methodName, e);
}
return(false);
}
finally
{
EndComCall(methodName);
}
}
/// <summary>
/// Cancels the refresh for all conditions.
/// </summary>
/// <returns></returns>
private bool CancelRefresh()
{
string methodName = "IOPCEventSubscriptionMgt.CancelRefresh";
try
{
IOPCEventSubscriptionMgt server = BeginComCall <IOPCEventSubscriptionMgt>(methodName, true);
server.CancelRefresh(m_callback.Cookie);
return(true);
}
catch (Exception e)
{
if (ComUtils.IsUnknownError(e, ResultIds.E_FAIL, ResultIds.E_INVALIDARG, ResultIds.E_NOTIMPL))
{
ComCallError(methodName, e);
}
return(false);
}
finally
{
EndComCall(methodName);
}
}