protected virtual PartialOrder ComparePartialOrder(RefreshRequestEventArgs leftValue, RefreshRequestEventArgs rightValue)
{
PartialOrder result = int.MinValue;
if (leftValue.IsFullRefresh)
{
result = (rightValue.IsFullRefresh ? 0 : 1);
}
else if (rightValue.IsFullRefresh)
{
result = -1;
}
else
{
PartialRefreshRequestEventArgs partialRefreshRequestEventArgs = leftValue as PartialRefreshRequestEventArgs;
PartialRefreshRequestEventArgs partialRefreshRequestEventArgs2 = rightValue as PartialRefreshRequestEventArgs;
if (!partialRefreshRequestEventArgs.Identities.IsEmptyCollection() && !partialRefreshRequestEventArgs2.Identities.IsEmptyCollection())
{
if (partialRefreshRequestEventArgs.Identities.Length > partialRefreshRequestEventArgs2.Identities.Length)
{
if (RefreshableComponent.IsSubsetOf(partialRefreshRequestEventArgs.Identities, partialRefreshRequestEventArgs2.Identities))
{
result = 1;
}
}
else if (RefreshableComponent.IsSubsetOf(partialRefreshRequestEventArgs2.Identities, partialRefreshRequestEventArgs.Identities))
{
result = -1;
}
}
}
return(result);
}
protected virtual void RemoveExistingRows(RefreshProgressChangedEventArgs e)
{
if (e.IsFirstProgressReport)
{
ResultsLoaderProfile resultsLoaderProfile = e.RequestArgument as ResultsLoaderProfile;
if (resultsLoaderProfile != null && resultsLoaderProfile.LoadableFromProfilePredicate != null)
{
for (int i = this.Table.Rows.Count - 1; i >= 0; i--)
{
DataRow row = this.Table.Rows[i];
if (resultsLoaderProfile.IsLoadable(row))
{
this.Table.Rows.Remove(row);
}
}
return;
}
if (e.IsFullRefresh)
{
ExTraceGlobals.ProgramFlowTracer.TraceDebug <DataTableLoader>((long)this.GetHashCode(), "DataTableLoader.OnProgressChanged: clearing table as this is the first progress report of this refresh. {0}", this);
this.Table.Clear();
return;
}
PartialRefreshRequestEventArgs partialRefreshRequestEventArgs = e.Request as PartialRefreshRequestEventArgs;
if (partialRefreshRequestEventArgs != null)
{
DataTable dataTable = (DataTable)e.UserState;
foreach (object identity in partialRefreshRequestEventArgs.Identities)
{
if (this.FindRowByIdentity(dataTable, identity) == null)
{
DataRow dataRow = this.FindRowByIdentity(this.Table, identity);
if (dataRow != null)
{
this.Table.Rows.Remove(dataRow);
}
}
}
}
}
}