public ExecutedHistoryMementoEventArgs(HistoryMemento newHistoryMemento)
{
this.newHistoryMemento = newHistoryMemento;
}
/// <summary>
/// Executes the HistoryFunction.
/// </summary>
/// <returns>
/// A HistoryMemento instance if an operation was performed successfully,
/// or null for success but no operation was performed.</returns>
/// <exception cref="HistoryFunctionNonFatalException">
/// There was error while performing the operation. No changes have been made to the HistoryWorkspace (no-op).
/// </exception>
/// <remarks>
/// If this HistoryFunction's ActionFlags contain the HistoryFlags.Cancellable bit, then it will be executed in
/// a background thread.
/// </remarks>
public HistoryMemento Execute(IHistoryWorkspace historyWorkspace)
{
SystemLayer.Tracing.LogFeature("HF(" + GetType().Name + ")");
HistoryMemento returnVal = null;
Exception exception = null;
try
{
try
{
if (this.executed)
{
throw new InvalidOperationException("Already executed this HistoryFunction");
}
this.executed = true;
returnVal = OnExecute(historyWorkspace);
return(returnVal);
}
catch (ArgumentOutOfRangeException aoorex)
{
if (this.criticalRegionCount > 0)
{
throw;
}
else
{
throw new HistoryFunctionNonFatalException(null, aoorex);
}
}
catch (OutOfMemoryException oomex)
{
if (this.criticalRegionCount > 0)
{
throw;
}
else
{
throw new HistoryFunctionNonFatalException(null, oomex);
}
}
}
catch (Exception ex)
{
if (IsAsync)
{
exception = ex;
return(returnVal);
}
else
{
throw;
}
}
finally
{
if (IsAsync)
{
OnFinished(returnVal, exception);
}
}
}
