public override void Translate(
MethodCallExpression m, TranslationState state, UniqueNameGenerator nameGenerator)
{
// there may not be a preidcate in any method call
IDbObject condition = null;
if (m.GetArguments().Any())
{
condition = state.ResultStack.Pop();
}
var childSelect = (IDbSelect)state.ResultStack.Pop();
var dbSelect = (IDbSelect)state.ResultStack.Peek();
childSelect.Where = condition.ToBinary(_dbFactory);
var dbJoin = dbSelect.Joins.Single(j => ReferenceEquals(j.To.Referee, childSelect));
IDbBinary whereClause = null;
// ReSharper disable once LoopCanBeConvertedToQuery
foreach (var joinKey in dbJoin.Condition.GetOperands().OfType <IDbColumn>().Where(c => ReferenceEquals(c.Ref, dbJoin.To)))
{
var pkColumn = _dbFactory.BuildColumn(dbJoin.To, joinKey.Name, joinKey.ValType.DotNetType, joinKey.Alias);
var binary = _dbFactory.BuildBinary(pkColumn, DbOperator.IsNot, _dbFactory.BuildConstant(null));
whereClause = whereClause.UpdateBinary(binary, _dbFactory);
}
state.ResultStack.Push(whereClause);
}