Cheatography
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This cheat sheet designed for unity custom framework
FindByIdvar entity = entityRepository.FindById(entity.Id)
//Load with properties
var entity = entityRepository.FindById(entity.Id, x=> x.OtherEntity, t=>t.AnotherEntityCollection);
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You can include properties with the query seperated by coma. This method calls FindAll with SingleOrDefault method. FindAll//Parameterles.
entityRepository.FindAll();
//Get entities which SomeProperty = Predicate
entity.Repository.FindAll(x=>x.SomeProperty == "Predicate");
//Get entity and its Child Collection
entity.Repository.FindAll(x=>x.ChildCollection)
//Get entities which SomeProperty = Predicate and include Child Collection
entity.Repository.FindAll(x=>x.SomeProperty= "Predicate" , t=>t.ChildCollection);
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You can extend search result with DynamicQueryable methods like where, select, skip, orderby,groupby etc. Add//Entity without a parent
entity = new entity() { ... };
entityRepository.Add(entity);
//Child object that has parent
entity = new entity() { ... , parentId= 3 };
entityRepository.Add(entity);
//OR
//Child Object that has parent
entity = new entity() { ... };
parent = parentRepository.FindyById(parentId);
parent.ChildEntityCollection.Add(entity);
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You have 3 options. If entity doesn't have a parent, simply add with repository. Else if entity has parent you must set its parentId or set parents itself. | | Remove//With Entity Id
someModelRepository.Remove(entity.Id);
//With Entity
someModelRepository.Remove(entity);
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This code will raises an error if entity has child object and relation in the DB doesn't cascade delete. How to delete child object//One-To-One Relation
parent.Child = null;
//One-To-Many Relation
parent.ChildCollection.Remove(Child);
//OR
parent.ChildCollection.Clear()
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One-To-Many Relations: Remember to mark parentId property in child entity with [Owner] attribute. Also in setter method of the parent navigation property, set parentId = 0 if value == null. If not, you'll get orphaned entity exception UnitOfWorktry
{
using (unitOfWorkFactory.Create())
{
//Add, Remove, Modify
}
}
catch (ModelValidationException mvex)
{
foreach (var error in mvex.ValidationErrors)
{
ModelState.AddModelError(error.MemberNames.FirstOrDefault() ?? "", error.ErrorMessage);
}
}
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You must use UnitOfWork if you want to add, edit or delete. |
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