internal override SqlSource VisitJoin(SqlJoin join)
{
SqlScope save = this.CurrentScope;
switch(join.JoinType)
{
case SqlJoinType.CrossApply:
case SqlJoinType.OuterApply:
{
this.Visit(join.Left);
SqlScope tmp = new SqlScope(join.Left, this.CurrentScope.ContainingScope);
this.CurrentScope = new SqlScope(null, tmp);
this.Visit(join.Right);
SqlScope tmp2 = new SqlScope(join.Right, tmp);
this.CurrentScope = new SqlScope(null, tmp2);
this.Visit(join.Condition);
break;
}
default:
{
this.Visit(join.Left);
this.Visit(join.Right);
this.CurrentScope = new SqlScope(null, new SqlScope(join.Right, new SqlScope(join.Left, this.CurrentScope.ContainingScope)));
this.Visit(join.Condition);
break;
}
}
this.CurrentScope = save;
return join;
}
private SqlColumnRef BubbleUp(SqlColumnRef cref)
{
for (SqlScope s = this.CurrentScope; s != null; s = s.ContainingScope)
{
if (s.Source != null)
{
SqlColumn found = this.bubbler.BubbleUp(cref.Column, s.Source);
if (found != null)
{
if (found != cref.Column)
{
return(new SqlColumnRef(found));
}
return(cref);
}
}
}
return(null);
}
internal SqlScope(SqlNode source, SqlScope containing)
{
this.source = source;
this.containing = containing;
}
internal SqlScope(SqlNode source, SqlScope containing)
{
this.source = source;
this.containing = containing;
}
