private void SetSchemeData(TableSchemeData schemaData)
{
fKeyFieldInfos = schemaData.KeyFieldInfos;
fKeyFieldArray = schemaData.KeyFieldArray;
Fields = schemaData.SelectFields;
KeyCount = fKeyFieldInfos.Count;
}
public static string GetSelectFields(this ITableScheme scheme, TkDbContext context)
{
TkDebug.AssertArgumentNull(scheme, "scheme", null);
TableSchemeData data = TableSchemeData.Create(context, scheme);
return(data.SelectFields);
}
private TableSelector(ITableScheme scheme, IDbDataSource source, bool useCache)
{
TkDebug.AssertArgumentNull(scheme, nameof(scheme), null);
TkDebug.AssertArgumentNull(source, nameof(source), null);
fSourceScheme = fScheme = scheme;
Source = source;
Context = source.Context;
HostDataSet = source.DataSet;
fDataAdapter = Context.CreateDataAdapter();
TableSchemeData schemaData = useCache ? TableSchemeData.Create(Context, scheme)
: new TableSchemeData(Context, scheme);
SetSchemeData(schemaData);
}
public virtual void ReadMetaData(ITableScheme metaData)
{
if (metaData == null)
{
if (fScheme != fSourceScheme)
{
fScheme = fSourceScheme;
TableSchemeData data = TableSchemeData.Create(Context, fSourceScheme);
SetSchemeData(data);
OnMetaDataChanged(true, fScheme);
}
}
else
{
if (fScheme != metaData)
{
fScheme = metaData;
TableSchemeData data = new TableSchemeData(Context, fScheme);
SetSchemeData(data);
OnMetaDataChanged(false, fScheme);
}
}
}
