//Get base class objects corresponding to a given IncludeBinding.
private Func <TableEntityRow, object[]> Get_GetBaseObjects_Computation(IncludeBinding binding, MaterializationData data)
{
return(Get_GetBaseObjects_Computation(data, b => b.MatchesTarget(binding)));
}
private Func <object, TableEntityRow, object> Get_GetOrCreateEntity_Computation(IncludeBinding includeBinding, MaterializationData data)
{
var getbaseObjects = Get_GetBaseObjects_Computation(includeBinding, data);
var entityConstructor = new EntityConstructor(entityContext, includeBinding.Type);
return((projectedEntity, source) =>
{
if (projectedEntity == null)
{
return null;
}
var tableObjects = new List <object>();
tableObjects.Add(projectedEntity);
tableObjects.AddRange(getbaseObjects(source));
return entityConstructor.GetOrCreateEntity(tableObjects.ToArray());
});
}
private Action <object, TableEntityRow> Get_AttachIncludes_Computation(Type entityType, IncludeBinding includeBinding
, MaterializationData data)
{
var includeBindings = data.ProjectedType.RelatedBindings
.Where(b => b is IncludeBinding && b.TargetBinding == includeBinding).Cast <IncludeBinding>().ToList();
var setIncludes = includeBindings.Select(b => Get_AttachIncludes_Computation(includeBinding.Type, b, data)).ToList();
//The fieldNo is 1 more than the related-binding index; since the first field [0] is the main entity itself.
var fieldNo = data.ProjectedType.RelatedBindings.IndexOf(includeBinding) + 1;
var getOrCreateEntityOrCollection = Get_GetOrCreateEntityOrCollection_Computation(includeBinding, data);
var memberInfo = (includeBinding.IncludeDirective.GetSelector().Body as MemberExpression).Member;
//Handling Many-to-Many Map type separately
if (entityContext._InternalServices.TypeTranslationUtil.GetMapping <IMapEntityMapping>(entityType) != null)
{
return((parent, source) =>
{
//Setting the include directive in the intermediate object
(parent as IEntity)._getIntermediateEntity().IncludeDirectives.Add(includeBinding.IncludeDirective);
var valueInProjection = source.Values[fieldNo];
var memberValue = getOrCreateEntityOrCollection(valueInProjection, source);
memberInfo.SetValue(parent, memberValue);
setIncludes.ForEach(f => f(memberValue, source));
});
}
//Not a Many-to-Many Collection
else
{
var backingContainerGetter = entityContext._InternalServices.TypeTranslationUtil
.MakeBackingContainerGetter(entityType, memberInfo);
return((parent, source) =>
{
//Setting the include directive in the intermediate object
(parent as IEntity)._getIntermediateEntity().IncludeDirectives.Add(includeBinding.IncludeDirective);
var valueInProjection = source.Values[fieldNo];
var intermediateContainerOnParent = backingContainerGetter((parent as IEntity)._getIntermediateEntity());
var memberValue = getOrCreateEntityOrCollection(valueInProjection, source);
if (null == memberValue)
{
return;
}
if (memberValue is IList)
{
foreach (var entity in (memberValue as IList))
{
intermediateContainerOnParent.MaterializationAddReference((entity as IEntity)._getIntermediateEntity());
}
}
else
{
intermediateContainerOnParent.MaterializationAddReference((memberValue as IEntity)._getIntermediateEntity());
}
var member = memberInfo.GetValue(parent);
setIncludes.ForEach(f => f(member, source));
});
}
}
private Func <object, TableEntityRow, object> Get_GetOrCreateEntityOrCollection_Computation(IncludeBinding includeBinding, MaterializationData data)
{
if (entityContext._InternalServices.TypeTranslationUtil.IsEntityCollection(includeBinding.Type))
{
var unprojectedBinding = data.ProjectedType.UnprojectedBindings
.Find(ub => (ub is UnprojectedCollectionBinding || ub is UnprojectedManyToManyBinding) && ub.TargetBinding == includeBinding);
if (unprojectedBinding != null)
{
if (unprojectedBinding is UnprojectedManyToManyBinding)
{
return(Get_GetUnprojectedCollections_Computation(unprojectedBinding, data.ManyToManyMaps));
}
else
{
return(Get_GetUnprojectedCollections_Computation(unprojectedBinding, data.InheritanceChains));
}
}
else
{
var collItemType = TypesUtil.GetGenericArgumentForBaseType(includeBinding.Type, typeof(ICollection <>));
var collectionEntityConstructor = new EntityConstructor(entityContext, collItemType);
return((tableEntity, source) =>
{
var list = new List <object>();
foreach (var item in (tableEntity as IEnumerable))
{
list.Add(collectionEntityConstructor.GetOrCreateEntity(new object[] { item }));
}
return list;
});
}
}
return(Get_GetOrCreateEntity_Computation(includeBinding, data));
}
