public static IEnumerable <Flat> Flatten(CellSet cellSet)
{
var valueMeasures = new List <string>();
var axes = cellSet.Axes.Cast <Microsoft.AnalysisServices.AdomdClient.Axis>().ToList();
var members = new List <MemberPair>();
for (int i = 0; i < cellSet.Axes.Count; i++)
{
for (int j = 0; j < cellSet.Axes[i].Positions.Count; j++)
{
for (int k = 0; k < cellSet.Axes[i].Positions[j].Members.Count; k++)
{
var levelName = cellSet.Axes[i].Positions[j].Members[k].ParentLevel.Caption;
if (levelName == "MeasuresLevel")
{
var name = cellSet.Axes[i].Positions[j].Members[i].Caption;
if (!valueMeasures.Contains(name))
{
valueMeasures.Add(name);
}
}
else
{
var caption = cellSet.Axes[i].Positions[j].Members[k].Caption;
members.Add(new MemberPair(levelName, caption));
}
}
}
}
var valueCount = valueMeasures.Count;
var memberCount = members.Select(x => x.Level).Distinct().Count();
var totalLoops = valueCount == 0 ? 0 : cellSet.Cells.Count / valueCount;
for (int i = 0; i < totalLoops; i++)
{
var flat = new Flat();
for (int j = 0; j < valueCount; j++)
{
flat.MeasureValues.Add(valueMeasures[j], cellSet[j + (i * valueCount)].Value);
}
for (int j = 0; j < memberCount; j++)
{
flat.PositionValues.Add(members[j].Level, members[j + (i * memberCount)].Member);
}
yield return(flat);
}
}
public static IEnumerable<Flat> Flatten(CellSet cellSet)
{
var valueMeasures = new List<string>();
var axes = cellSet.Axes.Cast<Microsoft.AnalysisServices.AdomdClient.Axis>().ToList();
var members = new List<MemberPair>();
for (int i = 0; i < cellSet.Axes.Count; i++)
for(int j = 0; j < cellSet.Axes[i].Positions.Count; j++)
for (int k = 0; k < cellSet.Axes[i].Positions[j].Members.Count; k++)
{
var levelName = cellSet.Axes[i].Positions[j].Members[k].ParentLevel.Caption;
if (levelName == "MeasuresLevel")
{
var name = cellSet.Axes[i].Positions[j].Members[i].Caption;
if(!valueMeasures.Contains(name))
valueMeasures.Add(name);
}
else
{
var caption = cellSet.Axes[i].Positions[j].Members[k].Caption;
members.Add(new MemberPair(levelName, caption));
}
}
var valueCount = valueMeasures.Count;
var memberCount = members.Select(x => x.Level).Distinct().Count();
var totalLoops = valueCount == 0 ? 0 : cellSet.Cells.Count / valueCount;
for (int i = 0; i < totalLoops; i++)
{
var flat = new Flat();
for(int j = 0; j < valueCount; j++)
{
flat.MeasureValues.Add(valueMeasures[j], cellSet[j + (i * valueCount)].Value);
}
for(int j = 0; j < memberCount; j++)
{
flat.PositionValues.Add(members[j].Level, members[j + (i * memberCount)].Member);
}
yield return flat;
}
}
internal static IEnumerable <T> FlattenAndReturn <T>(this CellSet source) where T : new()
{
if (source.Axes.Count > 2)
{
var ex = new NotImplementedInPAS_Exception("Apologies, but maping to an object using more than two axes is not yet supported.");
ex.ReasonWhy = "The differences in the Cell Values indexes have not been mapped yet.";
throw ex;
}
var type = typeof(T);
var flattend = Flat.Flatten(source);
var names = flattend
.SelectMany(x => x.MeasureValues.Select(y => y.Key).Distinct())
.Concat(flattend.SelectMany(x => x.PositionValues.Select(y => y.Key).Distinct()))
.Distinct()
.OrderBy(x => x);
var arrayExp = Expression.Parameter(typeof(string[]), "values");
var converterArray = Expression.Parameter(typeof(TypeConverter[]), "converters");
var bindingList = new Dictionary <ParameterExpression, MemberAssignment>();
var ps = type.GetProperties()
.Where(x => System.Attribute.IsDefined(x, typeof(MapToAttribute)))
.Select(x => new
{
Attribute = x.GetCustomAttribute <MapToAttribute>(),
PropertyInfo = x
})
.Where(x => names.Contains(x.Attribute.MdxColumn))
.OrderBy(x => x.Attribute.MdxColumn);
var converter = typeof(TypeConverter).GetMethod("ConvertFromString", new[] { typeof(string) });
var converterList = new TypeConverter[ps.Count()];
ps.For((v, i) =>
{
var prop = v.PropertyInfo;
var paramExp = Expression.Parameter(prop.PropertyType, prop.Name);
var arrayAssignment = Expression.ArrayIndex(arrayExp, Expression.Constant(i));
var typeConverter = TypeDescriptor.GetConverter(prop.PropertyType);
var converterArrayAssignment = Expression.ArrayIndex(converterArray, Expression.Constant(i));
var defaultValue = prop.PropertyType.GetDefault();
var defaultConstant = Expression.Constant(defaultValue == null ? null : defaultValue.ToString(), typeof(string));
var methodExp = Expression.Call(converterArrayAssignment, converter, Expression.Coalesce(arrayAssignment, defaultConstant));
Expression.Bind(prop,
Expression.Convert(methodExp, prop.PropertyType))
.Finally(bind => bindingList.Add(paramExp, bind));
converterList[i] = typeConverter;
});
var newExp = Expression.New(type);
var memberInit = Expression.MemberInit(newExp, bindingList.Values.ToArray());
var lambda = Expression.Lambda <Func <TypeConverter[], string[], T> >(memberInit, new[] { converterArray, arrayExp });
var creator = lambda.Compile();
foreach (var flat in flattend)
{
var results = flat.MeasureValues
.Select(x => new
{
Name = x.Key,
Value = x.Value == null ? null : x.Value.ToString()
})
.Concat(flat.PositionValues
.Select(x => new
{
Name = x.Key,
Value = x.Value
}))
.OrderBy(x => x.Name)
.Select(x => x.Value)
.ToArray();
yield return(creator(converterList, results));
}
}
