private void AutoJoin(JoinChainer source)
{
if (!source.HasNode)
{
throw JoinerException(source, (TableChainer)null, QueryTalkExceptionType.InvalidJoinTable);
}
bool found = false;
TableChainer target = null;
var ix = _targets.Count - 1;
while (ix >= 0)
{
target = _targets[ix];
if (CheckAutoTarget(source, target))
{
found = true;
break;
}
--ix;
}
if (!found)
{
throw JoinerAutoJoinFailedException(source);
}
var expression = _GetMappedExpression(source, target, DB3.Default);
_InjectOn(source, expression);
source.AppendJoinGraph(target.JoinGraph);
}
private Expression AliasByJoin(JoinChainer source, ByArgument arg)
{
var target = _GetTargetByAlias(source, arg.Alias, true);
if (!source.HasNode || !target.HasNode)
{
throw JoinerException(source, target, QueryTalkExceptionType.InvalidJoinTable);
}
var expression = _GetMappedExpression(source, target, DB3.Default);
source.AppendJoinGraph(target.JoinGraph);
return(expression);
}