internal ElseIfChainer(Chainer prev, INonSelectView nonSelectView, bool sign)
: base(prev)
{
chainMethod = Text.Method.ElseIfExists;
CheckNullAndThrow(Arg(() => nonSelectView, nonSelectView));
SelectChainer select = new SelectChainer((Chainer)nonSelectView, new Column[] { Designer.Null }, false);
var view = new View(select, select.Query);
Build = BuildViewMethod(view, sign);
}
// main chain build method
internal string BuildChain(BuildContext buildContext, BuildArgs buildArgs)
{
var sql = Wall.Text.GenerateSql(250);
foreach (var statement in GetRoot().Statements)
{
if (statement.SkipBuild)
{
continue;
}
var firstObject = statement.First;
// add .Select after .OrderBy (if missing)
var orderBy = firstObject.GetNext <OrderByChainer>();
if (orderBy != null && !(orderBy.Next is SelectChainer))
{
var next = orderBy.Next;
var cselect = new SelectChainer(orderBy, new Column[] { }, false);
cselect.SetNext(next);
}
if (statement.Build != null)
{
buildContext.Current = firstObject;
var append = statement.Build(buildContext, buildArgs);
sql.Append(append).S();
}
else
{
BuildSimpleStatement(buildContext, buildArgs, sql, firstObject);
}
}
Terminate(sql);
if (sql.Length == 1 && sql[0] == Text.TerminatorChar)
{
return(String.Empty);
}
return(sql.ToString());
}