/// <summary>
/// Builds the select columns.
/// </summary>
/// <param name="reportColumns">The report columns.</param>
/// <param name="context">The context.</param>
/// <param name="settings">Conversion settings.</param>
/// <returns>List{SelectColumn}.</returns>
internal static List <SelectColumn> BuildSelectColumns(IEntityCollection <ReportColumn> reportColumns, FromEntityContext context, ReportToQueryConverterSettings settings)
{
List <SelectColumn> columns = new List <SelectColumn>();
// Order the columns based on position
IEnumerable <ReportColumn> orderedReportColumns = reportColumns.OrderBy(rc => rc.ColumnDisplayOrder);
foreach (ReportColumn orderedReportColumn in orderedReportColumns)
{
ScalarExpression scalarExpression = null;
if (orderedReportColumn.ColumnExpression == null)
{
context.ReportInvalidColumns[orderedReportColumn.Id] = orderedReportColumn.Name;
if (!settings.SchemaOnly)
{
continue;
}
}
else
{
scalarExpression = BuildExpression(orderedReportColumn.ColumnExpression, context);
if (scalarExpression == null)
{
EventLog.Application.WriteWarning("the column expression id: {0} is invalid.", orderedReportColumn.ColumnExpression.Id.ToString());
context.ReportInvalidColumns[orderedReportColumn.Id] = orderedReportColumn.Name;
if (!settings.SchemaOnly)
{
continue;
}
}
}
Guid columnId = Guid.NewGuid();
SelectColumn selectColumn = new SelectColumn
{
IsHidden = orderedReportColumn.ColumnIsHidden ?? false,
DisplayName = orderedReportColumn.Name,
Expression = scalarExpression,
ColumnId = columnId,
EntityId = orderedReportColumn.Id
};
context.ReportColumnMap[orderedReportColumn.Id] = columnId;
columns.Add(selectColumn);
}
return(columns);
}
/// <summary>
/// Builds the order by collection.
/// </summary>
/// <param name="reportOrderBys">The report order bys.</param>
/// <param name="context">The context.</param>
/// <param name="settings">Conversion settings.</param>
/// <returns>List{OrderByItem}.</returns>
internal static List <OrderByItem> BuildOrderBy(IEntityCollection <ReportOrderBy> reportOrderBys, FromEntityContext context, ReportToQueryConverterSettings settings)
{
List <OrderByItem> orderByItems = new List <OrderByItem>();
if (context.Settings.ConditionsOnly)
{
return(orderByItems); // don't bother converting them (e.g. for use in security)
}
foreach (ReportOrderBy reportOrderBy in reportOrderBys.OrderBy(rob => rob.OrderPriority))
{
ScalarExpression expression = BuildExpression(reportOrderBy.OrderByExpression, context);
if (expression == null)
{
EventLog.Application.WriteWarning("the order expression id: {0} is invalid.", reportOrderBy.OrderByExpression != null ? reportOrderBy.OrderByExpression.Id.ToString() : "null");
continue;
}
//the orderby expression is ColumnReferenceExpression, the referenced report column must exists
if (context.ColumnReferenceMap.ContainsKey(expression.ExpressionId) &&
context.ReportColumnMap.ContainsKey(context.ColumnReferenceMap[expression.ExpressionId]))
{
OrderByItem orderByItem = new OrderByItem
{
Direction =
reportOrderBy.ReverseOrder ?? false
? OrderByDirection.Descending
: OrderByDirection.Ascending,
Expression = expression
};
orderByItems.Add(orderByItem);
}
}
return(orderByItems);
}
