示例#1
0
        private static void UpdateIncludeSelectAndProcessToNodes(
            IncludeNode graphNode, IDbSelect includedSelect, IModelInfoProvider infoProvider,
            IDbObjectFactory dbFactory, UniqueNameGenerator nameGenerator, AbstractMethodTranslator[] addons)
        {
            // create temp table
            var entityRef   = includedSelect.GetReturnEntityRef();
            var returnTable = (IDbTable)entityRef.Referee;

            var newIncludedSelect = dbFactory.BuildSelect(returnTable);

            newIncludedSelect.From.Alias = nameGenerator.GenerateAlias(newIncludedSelect, returnTable.TableName);

            var tempTableName = TranslationConstants.TempTablePreix + nameGenerator.GenerateAlias(null, returnTable.TableName, true);
            var tempTable     = dbFactory.BuildTempTable(tempTableName, includedSelect);

            var tempSelect = dbFactory.BuildSelect(tempTable);

            tempSelect.From.Alias = nameGenerator.GenerateAlias(tempSelect, tempTable.TableName);

            var joinToTemp = MakeJoin(newIncludedSelect, tempSelect, dbFactory, nameGenerator);
            var joinTo     = joinToTemp.To;

            newIncludedSelect.Joins.Add(joinToTemp);

            foreach (var pk in returnTable.PrimaryKeys)
            {
                var fromPkCol = dbFactory.BuildColumn(entityRef, pk.Name, pk.ValType);
                includedSelect.Selection.Add(fromPkCol);

                var toPkCol = dbFactory.BuildColumn(tempSelect.From, pk.Name, pk.ValType);
                tempSelect.Selection.Add(toPkCol);
                tempSelect.GroupBys.Add(toPkCol);

                toPkCol = dbFactory.BuildColumn(joinTo, pk.Name, pk.ValType);
                var binary = dbFactory.BuildBinary(fromPkCol, DbOperator.Equal, toPkCol);
                joinToTemp.Condition = joinToTemp.Condition.UpdateBinary(binary, dbFactory);
            }

            var orderCol = dbFactory.BuildColumn(tempSelect.From, tempTable.RowNumberColumnName, typeof(int));

            tempSelect.Selection.Add(orderCol);

            orderCol = dbFactory.BuildColumn(joinTo, tempTable.RowNumberColumnName, typeof(int));
            newIncludedSelect.OrderBys.Add(orderCol);

            graphNode.Select    = newIncludedSelect;
            graphNode.TempTable = tempTable;

            foreach (var toNode in graphNode.ToNodes)
            {
                TranslateGraphNode(toNode, infoProvider, dbFactory, nameGenerator, addons);
            }
        }