public TFlexCelDataSource(string dtName, VirtualDataTable aData, TRelationshipList ExtraRelations, TRelationshipList StaticRelations,
TBand MasterBand, string Sort, IDataTableFinder TableFinder)
{
SplitLink = null;
TBand band = MasterBand;
TMasterDetailLinkList MasterDetailLinkList = new TMasterDetailLinkList();
while (band != null)
{
if (band.DataSource != null)
{
TRelation RelToMaster = band.DataSource.Data.GetRelationWith(aData);
if (RelToMaster != null)
{
MasterDetailLinkList.AddRelation(band.DataSource.DataState, RelToMaster);
}
//Create the splitlink.
TMasterSplitDataTableState SplitMaster = band.DataSource.DataState as TMasterSplitDataTableState;
if (SplitMaster != null && String.Equals(SplitMaster.DetailName, dtName, StringComparison.CurrentCultureIgnoreCase))
{
if (SplitLink != null)
{
FlxMessages.ThrowException(FlxErr.ErrSplitNeedsOnlyOneMaster, dtName, SplitMaster.TableName, SplitLink.ParentDataSource.TableName);
}
SplitLink = new TSplitLink(SplitMaster, SplitMaster.SplitCount);
}
AddExtraRelationships(TableFinder, aData, ExtraRelations, band, MasterDetailLinkList);
AddExtraRelationships(TableFinder, aData, StaticRelations, band, MasterDetailLinkList);
}
band = band.MasterBand;
}
MasterDetailLinks = MasterDetailLinkList.ToArray();
Data = aData;
DataState = aData.CreateState(Sort, MasterDetailLinks, SplitLink);
DataState.FTableName = dtName;
FName = dtName;
}
private static void AddExtraRelationships(IDataTableFinder TableFinder, VirtualDataTable aData, TRelationshipList Relations, TBand band, TMasterDetailLinkList MasterDetailLinkList)
{
foreach (TRelationship tr in Relations)
{
TDataSourceInfo dParent = TableFinder.TryGetDataTable(tr.ParentTable);
if (dParent == null || dParent.Table == null)
{
FlxMessages.ThrowException(FlxErr.ErrInvalidManualRelationshipDatasetNull, tr.ParentTable);
}
TDataSourceInfo dChild = TableFinder.TryGetDataTable(tr.ChildTable);
if (dChild == null || dChild.Table == null)
{
FlxMessages.ThrowException(FlxErr.ErrInvalidManualRelationshipDatasetNull, tr.ChildTable);
}
if (SameTable(dChild.Table, aData) && SameTable(dParent.Table, band.DataSource.Data))
{
GetColIndexes(dParent.Table, tr.ParentColumns, true); //we do it here so it checks all columns exist in the parent. They might not exist in our table, and that is ok if our table is a distinct for example)
GetColIndexes(dChild.Table, tr.ChildColumns, true);
int[] ChildCols = GetColIndexes(aData, tr.ChildColumns, false);
int[] ParentCols = GetColIndexes(band.DataSource.Data, tr.ParentColumns, false);
if (ChildCols != null && ParentCols != null)
{
MasterDetailLinkList.AddRelation(band.DataSource.DataState,
new TRelation(band.DataSource.Data, aData, ParentCols,
ChildCols));
}
}
}
}
