public static DmlfColumnRef[] BuildFromArray(string[] cols, DmlfSource source)
{
return((
from c in cols select new DmlfColumnRef {
ColumnName = c, Source = source
}
).ToArray());
}
public List <DmlfColumnRef> GetPrimaryKey(DmlfSource src)
{
var res = new List <DmlfColumnRef>();
foreach (var fld in this)
{
var col = fld.Column;
if (col != null && fld.DisplayInfo.IsPrimaryKey && col.Source == src)
{
res.Add(col);
}
}
return(res);
}
public bool IsMultiTable()
{
DmlfSource lastsrc = null;
foreach (var col in this)
{
if (col.Source != null)
{
if (lastsrc != null && col.Source != lastsrc)
{
return(true);
}
lastsrc = col.Source;
}
}
return(false);
}
public static DmlfResultField BuildFromColumn(string colname, DmlfSource src)
{
return(new DmlfResultField
{
Expr = new DmlfColumnRefExpression
{
Column = new DmlfColumnRef
{
ColumnName = colname,
Source = src,
}
},
DisplayInfo = new ColumnDisplayInfo
{
Style = ColumnDisplayInfo.UsageStyle.Value,
}
});
}
