static IColumn[] GetColumns(IFieldFinder finder, LambdaExpression field)
{
var body = field.Body;
Type?type = RemoveCasting(ref body);
body = IndexWhereExpressionVisitor.RemoveLiteEntity(body);
var members = Reflector.GetMemberListBase(body);
if (members.Any(a => ignoreMembers.Contains(a.Name)))
{
members = members.Where(a => !ignoreMembers.Contains(a.Name)).ToArray();
}
Field f = Schema.FindField(finder, members);
if (type != null)
{
var ib = f as FieldImplementedBy;
if (ib == null)
{
throw new InvalidOperationException("Casting only supported for {0}".FormatWith(typeof(FieldImplementedBy).Name));
}
return((from ic in ib.ImplementationColumns
where type.IsAssignableFrom(ic.Key)
select(IColumn) ic.Value).ToArray());
}
return(TableIndex.GetColumnsFromFields(f));
}
public TableIndex AddIndex(ITable table, Field[] fields)
{
var index = new TableIndex(table, TableIndex.GetColumnsFromFields(fields));
AddIndex(index);
return(index);
}
public List <TableIndex> GeneratAllIndexes()
{
IEnumerable <EntityField> fields = Fields.Values.AsEnumerable();
if (Mixins != null)
{
fields = fields.Concat(Mixins.Values.SelectMany(m => m.Fields.Values));
}
var result = fields.SelectMany(f => f.Field.GenerateIndexes(this)).ToList();
if (MultiColumnIndexes != null)
{
result.AddRange(MultiColumnIndexes);
}
if (result.OfType <UniqueTableIndex>().Any())
{
var s = Schema.Current.Settings;
List <IColumn> attachedFields = fields.Where(f => s.FieldAttributes(PropertyRoute.Root(this.Type).Add(f.FieldInfo)).OfType <AttachToUniqueIndexesAttribute>().Any())
.SelectMany(f => TableIndex.GetColumnsFromFields(f.Field))
.ToList();
if (attachedFields.Any())
{
result = result.Select(ix =>
{
var ui = ix as UniqueTableIndex;
if (ui == null || ui.AvoidAttachToUniqueIndexes)
{
return(ix);
}
return(new UniqueTableIndex(ui.Table, ui.Columns.Concat(attachedFields).ToArray())
{
Where = ui.Where
});
}).ToList();
}
}
if (this.SystemVersioned != null)
{
result.Add(new TableIndex(this, this.SystemVersioned.Columns().PreAnd(this.PrimaryKey).ToArray()));
}
return(result);
}
public virtual UniqueTableIndex?GenerateUniqueIndex(ITable table, UniqueIndexAttribute?attribute)
{
if (attribute == null)
{
return(null);
}
var result = new UniqueTableIndex(table, TableIndex.GetColumnsFromFields(this))
{
AvoidAttachToUniqueIndexes = attribute.AvoidAttachToUniqueIndexes
};
if (attribute.AllowMultipleNulls)
{
result.Where = IndexWhereExpressionVisitor.IsNull(this, false);
}
return(result);
}