public void Visit(ComparisionIsExpression node)
{
var operand = node.Operand;
VisitChild(2, false, false, operand);
if (!_verdictColumn || !(operand is Identifier))
{
return;
}
var col = (Identifier)operand;
var table = _tableAlias.GetValue(col.GetLevelUnescapeUpName(2) ?? Null_Alias_Key);
if (!IsRuledColumn(table, col.IdTextUpUnescape))
{
return;
}
switch (node.Mode)
{
case ComparisionIsExpression.IsFalse:
{
AddColumnValue(table, col.IdTextUpUnescape, LiteralBoolean.False, node, null);
break;
}
case ComparisionIsExpression.IsTrue:
{
AddColumnValue(table, col.IdTextUpUnescape, LiteralBoolean.True, node, null);
break;
}
case ComparisionIsExpression.IsNull:
{
AddColumnValue(table, col.IdTextUpUnescape, null, node, null);
break;
}
}
}
public virtual void Visit(ComparisionIsExpression node)
{
VisitInternal(node.Operand);
}