private IQueryable HandleMultipleSourceQueryable(object multipleSourceQueryableCandidate)
{
IDataFacadeQueryable multipleSourceQueryable = multipleSourceQueryableCandidate as IDataFacadeQueryable;
if (multipleSourceQueryable == null)
{
return(null);
}
IQueryable queryable;
if (!_pullAllToMemory && multipleSourceQueryable.Sources.Count == 1)
{
queryable = multipleSourceQueryable.Sources.First();
}
else
{
IQueryable[] sources = multipleSourceQueryable.Sources.ToArray();
queryable = LoadToMemory(multipleSourceQueryable.InterfaceType, sources);
}
if (_queryable == null)
{
_queryable = queryable;
}
return(queryable);
}
protected override Expression VisitConstant(ConstantExpression c)
{
if (c.Value is IDataFacadeQueryable)
{
IDataFacadeQueryable multibleSourceQueryable = (IDataFacadeQueryable)c.Value;
_sourceCount += multibleSourceQueryable.Sources.Count();
IDataFacadeQueryable found = _multibleSourceQueryables.Find(delegate(IDataFacadeQueryable queryable) { return(object.ReferenceEquals(multibleSourceQueryable, queryable)); });
if (found == null)
{
_multibleSourceQueryables.Add(multibleSourceQueryable);
}
}
return(base.VisitConstant(c));
}
