internal override DbExpression AsCqt(bool isTopLevel)
{
CqlBlock child1 = this.Children[0];
DbExpression dbExpression = child1.AsCqt(false);
List <string> stringList = new List <string>();
for (int index = 1; index < this.Children.Count; ++index)
{
CqlBlock child2 = this.Children[index];
DbExpression right = child2.AsCqt(false);
Func <DbExpression, DbExpression, DbExpression> joinCondition = new Func <DbExpression, DbExpression, DbExpression>(this.m_onClauses[index - 1].AsCqt);
DbJoinExpression dbJoinExpression;
switch (this.m_opType)
{
case CellTreeOpType.FOJ:
dbJoinExpression = dbExpression.FullOuterJoin(right, joinCondition);
break;
case CellTreeOpType.LOJ:
dbJoinExpression = dbExpression.LeftOuterJoin(right, joinCondition);
break;
case CellTreeOpType.IJ:
dbJoinExpression = dbExpression.InnerJoin(right, joinCondition);
break;
default:
return((DbExpression)null);
}
if (index == 1)
{
child1.SetJoinTreeContext((IList <string>)stringList, dbJoinExpression.Left.VariableName);
}
else
{
stringList.Add(dbJoinExpression.Left.VariableName);
}
child2.SetJoinTreeContext((IList <string>)stringList, dbJoinExpression.Right.VariableName);
dbExpression = (DbExpression)dbJoinExpression;
}
return((DbExpression)dbExpression.Select <DbExpression>((Func <DbExpression, DbExpression>)(row => this.GenerateProjectionCqt(row, false))));
}
