private void Write(string name, DbSortClause sortClause)
{
Write(name, "");
_depth++;
WriteLine(string.Format("Collation: {0}", "", sortClause.Collation));
WriteLine(string.Format("Ascending: {0}", "", sortClause.Ascending));
sortClause.Expression.Accept(this);
_depth--;
}
private LegacyCommandTrees.DbSortClause ConvertToLegacySortClause(DbSortClause sortClause)
{
return
(sortClause.Ascending
? string.IsNullOrEmpty(sortClause.Collation)
? sortClause.Expression.Accept(this).ToSortClause()
: sortClause.Expression.Accept(this).ToSortClause(sortClause.Collation)
: string.IsNullOrEmpty(sortClause.Collation)
? sortClause.Expression.Accept(this).ToSortClauseDescending()
: sortClause.Expression.Accept(this).ToSortClauseDescending(sortClause.Collation));
}
private Expression CreateOrderByExpression(IList <DbSortClause> sortorder, string sourceVariableName, Expression source)
{
Type sourceType = TypeHelper.GetElementType(source.Type);
Expression result = source;
LambdaExpression selector = null;
for (int i = 0; i < sortorder.Count; i++)
{
DbSortClause sort = sortorder[i];
ParameterExpression param = Expression.Parameter(sourceType, sourceVariableName);
using (this.CreateVariable(param, sourceVariableName))
{
selector = Expression.Lambda(this.Visit(sort.Expression), param);
}
if (sort.Ascending)
{
if (i == 0)
{
result = queryMethodExpressionBuilder.OrderBy(result, selector);
}
else
{
result = queryMethodExpressionBuilder.ThenBy(result, selector);
}
}
else
{
if (i == 0)
{
result = queryMethodExpressionBuilder.OrderByDescending(result, selector);
}
else
{
result = queryMethodExpressionBuilder.ThenByDescending(result, selector);
}
}
}
return(result);
}
private bool VisitSortClause(DbSortClause sortClause)
{
return(VisitExpression(sortClause.Expression));
}
