/// <summary>
/// Populate the sub entities of fieldTestList
/// </summary>
/// <param name="fieldTests"></param>
/// <param name="toPopulate"></param>
public override void Populate(IEnumerable <FieldTest> fieldTests, Flags toPopulate)
{
Log("Populate", fieldTests.GetIdenties(), toPopulate);
// Implement breadth first loading of related entities.
// Any entity that has been requested to be loaded, should be loaded at this level where possible.
// Remove all sub entity types that this entity relates to directly.
Flags stillToPopulate = toPopulate;
stillToPopulate = stillToPopulate.Remove(EntityType.Widget);
stillToPopulate = stillToPopulate.Remove(EntityType.Widget);
// Get parent entities: Widget
if ((toPopulate & EntityType.Widget) == EntityType.Widget)
{
// Grab the ids for the ones that actually need populating
IEnumerable <FieldTest> toBePopulated = fieldTests.Where(entity => entity.ForeignKeyFieldWidgetRequiresPopulation);
int[] idsToLoad = toBePopulated.Select(entity => entity.ForeignKeyField).ToList().ToArray();
// And load the sub entities for those ones.
WidgetList parentWidgetList = toBePopulated.Count() > 0
? WidgetRepo.Get(idsToLoad, stillToPopulate)
: new WidgetList();
Dictionary <int, Widget> widgetListById = parentWidgetList.MapById;
// Now go over all the entites. For ones that need popualting, populate entities
// directly. For those already populated, make a check on sub entities to ensure
// they are loaded to the required level
WidgetList toBeChecked = new WidgetList();
foreach (FieldTest fieldTest in fieldTests)
{
if (fieldTest.ForeignKeyFieldWidgetRequiresPopulation)
{
fieldTest.ForeignKeyFieldWidget =
widgetListById.ContainsKey(fieldTest.ForeignKeyField)
? widgetListById[fieldTest.ForeignKeyField]
: null;
}
else if (fieldTest.ForeignKeyFieldWidgetPopulated)
{
toBeChecked.Add(fieldTest.ForeignKeyFieldWidget);
}
}
// If there's any "to be checked" (because they were already loaded) let the entiies own
// repo do whatever checks it needs to do
if (toBeChecked.Count > 0)
{
WidgetRepo.Populate(toBeChecked, stillToPopulate);
}
}
// Get parent entities: Widget
if ((toPopulate & EntityType.Widget) == EntityType.Widget)
{
// Grab the ids for the ones that actually need populating
IEnumerable <FieldTest> toBePopulated = fieldTests.Where(entity => entity.ForeignKeyFieldNullableWidgetRequiresPopulation);
int[] idsToLoad = toBePopulated.Select(entity => entity.ForeignKeyFieldNullable.Value).ToList().ToArray();
// And load the sub entities for those ones.
WidgetList parentWidgetList = toBePopulated.Count() > 0
? WidgetRepo.Get(idsToLoad, stillToPopulate)
: new WidgetList();
Dictionary <int, Widget> widgetListById = parentWidgetList.MapById;
// Now go over all the entites. For ones that need popualting, populate entities
// directly. For those already populated, make a check on sub entities to ensure
// they are loaded to the required level
WidgetList toBeChecked = new WidgetList();
foreach (FieldTest fieldTest in fieldTests)
{
if (fieldTest.ForeignKeyFieldNullableWidgetRequiresPopulation)
{
fieldTest.ForeignKeyFieldNullableWidget =
widgetListById.ContainsKey(fieldTest.ForeignKeyFieldNullable.Value)
? widgetListById[fieldTest.ForeignKeyFieldNullable.Value]
: null;
}
else if (fieldTest.ForeignKeyFieldNullableWidgetPopulated)
{
toBeChecked.Add(fieldTest.ForeignKeyFieldNullableWidget);
}
}
// If there's any "to be checked" (because they were already loaded) let the entiies own
// repo do whatever checks it needs to do
if (toBeChecked.Count > 0)
{
WidgetRepo.Populate(toBeChecked, stillToPopulate);
}
}
}
