/// <summary>
/// Many to many (N -> *) multi-map.
/// Load a list of children to a parent's property.
/// Example:
/// SELECT Parent.ID AS ParentId, TC.* FROM TableChild TC
/// INNER JOIN
/// (
/// SELECT ID From TableParent
/// ) Parent ON Parent.ID = TC.ParentID
///
/// </summary>
public static Dictionary <TParentKey, IList <TReturn> > ReadChild <TParentKey, TReturn>(this SqlMapper.GridReader reader, Type[] typesChild, Func <object[], TReturn> mapChild, string splitOn = "Id", bool buffered = true)
{
Dictionary <TParentKey, IList <TReturn> > childMap = new Dictionary <TParentKey, IList <TReturn> >();
typesChild.Append(typeof(DapperManyToMany <TParentKey, TReturn>));
reader.Read(typesChild, objects =>
{
DapperManyToMany <TParentKey, TReturn> wrapper = (DapperManyToMany <TParentKey, TReturn>)objects.Last();
object[] newArray = new object[objects.Length - 1];
Array.Copy(objects, 0, newArray, 0, newArray.Length);
wrapper.Child = mapChild(newArray);
if (childMap.ContainsKey(wrapper.ParentId))
{
childMap[wrapper.ParentId].Add(wrapper.Child);
}
else
{
childMap.Add(wrapper.ParentId, new List <TReturn>
{
wrapper.Child
});
}
return(wrapper.Child);
}, splitOn, buffered);
return(childMap);
}
/// <summary>
/// Many to many (N -> *) multi-map.
/// Load a list of children to a parent's property.
/// Example:
/// SELECT Parent.ID AS ParentId, TC.* FROM TableChild TC
/// INNER JOIN
/// (
/// SELECT ID From TableParent
/// ) Parent ON Parent.ID = TC.ParentID
///
/// </summary>
public static Dictionary <TParentKey, IList <TReturn> > ReadChild <TFirst, TSecond, TThird, TFourth, TFifth, TSixth, TSeventh, T8, T9, T10, T11, T12, T13, T14, T15, T16, TReturn, TParentKey>(this SqlMapper.GridReader reader, Func <TFirst, TSecond, TThird, TFourth, TFifth, TSixth, TSeventh, T8, T9, T10, T11, T12, T13, T14, T15, T16, TReturn> func, string splitOn = "Id", bool buffered = true)
{
Type[] types =
{
typeof(TFirst),
typeof(TSecond),
typeof(TThird),
typeof(TFourth),
typeof(TFifth),
typeof(TSixth),
typeof(TSeventh)
, typeof(T8)
, typeof(T9)
, typeof(T10)
, typeof(T11)
, typeof(T12)
, typeof(T13)
, typeof(T14)
, typeof(T15)
, typeof(T16)
, typeof(DapperManyToMany <TParentKey, TReturn>)
};
Dictionary <TParentKey, IList <TReturn> > childMap = new Dictionary <TParentKey, IList <TReturn> >();
reader.Read(types, objects =>
{
DapperManyToMany <TParentKey, TReturn> wrapper = (DapperManyToMany <TParentKey, TReturn>)objects[16];
wrapper.Child = func((TFirst)objects[0], (TSecond)objects[1], (TThird)objects[2], (TFourth)objects[3], (TFifth)objects[4], (TSixth)objects[5], (TSeventh)objects[6], (T8)objects[7], (T9)objects[8], (T10)objects[9], (T11)objects[10], (T12)objects[11], (T13)objects[12], (T14)objects[13], (T15)objects[14], (T16)objects[15]);
if (childMap.ContainsKey(wrapper.ParentId))
{
childMap[wrapper.ParentId].Add(wrapper.Child);
}
else
{
childMap.Add(wrapper.ParentId, new List <TReturn>
{
wrapper.Child
});
}
return(wrapper.Child);
}, splitOn, buffered);
return(childMap);
}
