We have noticed an anomaly when using "?Fields=" in version 4.0.55 (pre-release on MyGet).
We have an Employee table with three 1:1 relationships - EmployeeType, Department and Title:
public partial class Employee {
[PrimaryKey]
[AutoIncrement]
public int ID { get; set; }
[References(typeof(EmployeeType))]
public int EmployeeTypeID { get; set; }
[References(typeof(Department))]
public int DepartmentID { get; set; }
[References(typeof(Title))]
public int TitleID { get; set; }
.
.
.
}
public class EmployeeType {
[PrimaryKey]
public int ID { get; set; }
public string Name { get; set; }
}
public class Department {
[PrimaryKey]
public int ID { get; set; }
public string Name { get; set; }
[Reference]
public List<Title> Titles { get; set; }
}
public class Title {
[PrimaryKey]
public int ID { get; set; }
[References(typeof(Department))]
public int DepartmentID { get; set; }
public string Name { get; set; }
}
The latest update to 4.0.55 allows related DTOs to be requested using ?Fields= on the query string like this:
/employees?fields=id,firstname,lastname,departmentid,department
Note that the "proper" way to request a related DTO (department) is to also request the foreign key field (departmentid, in this case).
We wondered if there was a way to return all of the Employee table fields and only selected related DTOs, so in testing we found that this request works:
/employees?fields=department
We get back all the Employee table fields plus the related Department DTO - with one strange thing - the Employee's ID field is populated with the Employee's TitleID values.
Specifying the foreign key field in the request fixes that anomaly:
/employees?fields=id,departmentid,department
but we lose all of the other Employee fields.
Is there a way that to get all of the Employee fields and selected related DTOs?
Here is our AutoQuery DTO:
[Route("/employees", "GET")]
public class FindEmployeesRequest : QueryDb<Employee>,
IJoin<Employee, EmployeeType>,
IJoin<Employee, Department>,
IJoin<Employee, Title> {
public int? ID { get; set; }
public int[] IDs { get; set; }
public string UserID { get; set; }
public string[] UserIDs { get; set; }
public int? EmployeeTypeID { get; set; }
public int[] EmployeeTypeIDs { get; set; }
public int? DepartmentID { get; set; }
public int[] DepartmentIDs { get; set; }
public int? TitleID { get; set; }
public int[] TitleIDs { get; set; }
public string LastNameStartsWith { get; set; }
public DateTime[] DateOfBirthBetween { get; set; }
public DateTime[] HireDateBetween { get; set; }
public bool? IsActive { get; set; }
[QueryDbField(Template = "(MONTH({Field}) = {Value})", Field = "DateOfBirth")]
public int? BirthMonth { get; set; }
[QueryDbField(Template = "(DAY({Field}) = {Value})", Field = "DateOfBirth")]
public int? BirthDay { get; set; }
[QueryDbField(Template = "(FirstName LIKE {Value} OR LastName LIKE {Value} OR PreferredName LIKE {Value})", ValueFormat = "%{0}%", Field = "ID")]
public string NameSearch { get; set; }
[QueryDbField(Template = "(FirstName LIKE {Value} OR LastName LIKE {Value} OR PreferredName LIKE {Value} OR Department.Name LIKE {Value} OR Title.Name LIKE {Value})", ValueFormat = "%{0}%", Field = "ID")]
public string BasicSearch { get; set; }
[QueryDbField(Template = "({Field} LIKE {Value})", Field = "EmployeeTypeName", ValueFormat = "%{0}%")]
public string EmployeeTypeSearch { get; set; }
[QueryDbField(Template = "({Field} LIKE {Value})", Field = "DepartmentName", ValueFormat = "%{0}%")]
public string DepartmentSearch { get; set; }
[QueryDbField(Template = "({Field} LIKE {Value})", Field = "TitleName", ValueFormat = "%{0}%")]
public string TitleSearch { get; set; }
}
Support for wildcard custom field lists was added in this commit where you can specify all fields of the primary or joined table by adding a .* suffix, e.g:
?fields=id,departmentid,department,employee.*
It essentially serves as a substitute placeholder which will be replace it with all fields in the specified table.
This change is available from v4.0.55 that's now available on MyGet.
Related
My class structure looks like this. What I'm trying to do is, create automap from source EmployeeInfo class to destination NewEmployeeInfo class and vise Versa.
public class EmployeeInfo ///// Old Employee class - Transform this into New
{
public int EmployeeID { get; set; }
public string EmployeeName { get; set; }
public int DepartmentID { get; set; }
public string DepartmentName { get; set; }
}
public class NewEmployeeInfo //// New Employee -- Transform in to this
{
public Employee Employee { get; set; }
public Department Department { get; set; }
}
public class Employee
{
public int EmployeeID { get; set; }
public string EmployeeName { get; set; }
}
public class Department
{
public int DepartmentID { get; set; }
public string DepartmentName { get; set; }
}
I have created an AutoQuery function in my API with the use of the following code.
[Route("/cars/search")]
public class SearchCars : QueryDb<Car, CarDto>, IJoin<Car, Equipment, Colour, FuelType, Manufacturer>
{
public List<int> EquipmentIds { get; set; }
public List<int> ManufacturerIds { get; set; }
public List<int> ColourIds { get; set; }
}
The CarDto looks like this
public class CarDto
{
public int Id { get; set; }
public List<Equipment> Equipment { get; set; }
public Manufacturer Manufacturer { get; set; }
public int ManufactorId { get; set; }
public FuelType FuelType { get; set; }
public int FuelTypeId { get; set; }
public byte[] ProfileImage { get; set; }
}
I was wondering if there are any specific values the IJoin looks for, because when I try to use this I get "Could not infer relationship between Car and Equipment"
Car looks like this.
[AutoIncrement]
public int Id { get; set; }
public int FuelTypeId { get; set; }
[Required]
public List<Equipment> Equipment { get; set; }
[Required]
public List<int> EquipmentIds { get; set; }
[Required]
public byte[] ProfileImage { get; set; }
Equipment looks like this.
[AutoIncrement]
public int Id { get; set; }
public EquipmentType EquipmentType { get; set; }
[Required]
public int EquipmentTypeId { get; set; }
[Required]
public string Name { get; set; }
I realise that there would require alot of magic knowing that EquipmentIds is a list of Ids that it should check for in the Equipment table, but since everything else with ServiceStack is magic, I am giving it a try.
NB I have shortened some of the models because they are long and contains lots of information which is not needed in this case.
Any joins in AutoQuery need to follow OrmLite's Reference Conventions.
I have a problem with devising a many to many relationship in code first. EF is creating the Junction table and associating the Fk's as I would expect, however when i try to access the User's MailingList collection, there are no entries.
I've implemented test data on Initialise via Seeding, the data is al present in the database.
I think the problem lies with the constructors for Users and MailingLists, but I'm uncertain. I want to be able to navigate the navigational property of User.MailingLists.
var user = db.Users.Find(1);
Console.WriteLine("{0}", user.EmailAddress); //This is Fine
Console.WriteLine("{0}", user.Address.PostCode); /This is Fine
foreach (MailingList ml in user.MailingLists) // this is 0
{
Console.WriteLine("{0}", ml.Name);
}
My model is below:-
public class User : IEntityBase
{
public User()
{
MailingLists = new List<MailingList>();
}
public int Id { get; set; }
public string Forename { get; set; }
public string Surname { get; set; }
public string EmailAddress { get; set; }
public DateTime? DateLastUpdated { get; set; }
public DateTime DateCreated { get; set; }
public bool IsDeleted { get; set; }
public virtual Address Address { get; set; }
public ICollection<MailingList> MailingLists { get; set; }
}
public class MailingList : IEntityBase
{
public MailingList()
{
Users = new List<User>();
}
public int Id { get; set; }
public string Name { get; set; }
public DateTime? DateLastUpdated { get; set; }
public DateTime DateCreated { get; set; }
public bool IsDeleted { get; set; }
public ICollection<User> Users { get; set; }
}
public class Address : IEntityBase
{
public int Id { get; set; }
public string AddressLine1 { get; set; }
public string AddressLine2 { get; set; }
public string AddressLine3 { get; set; }
public string City { get; set; }
public string County { get; set; }
public string PostCode { get; set; }
public DateTime? DateLastUpdated { get; set; }
public DateTime DateCreated { get; set; }
public bool IsDeleted { get; set; }
}
Any suggestions welcome.
You are neither eager loading the MailingList entries with the query, nor fulfulling the requirements for a lazy loading proxy so there is no way EF can populate the collection.
To allow lazy loading, change the MailingList property to be virtual to allow the EF proxy to override it.
To use eager loading, use Include() (an extension method in System.Data.Entity) in the query to specify that the MailingList should be loaded.
I'm using EF5.0 (database first) and trying to Update "Company" entity which is a complex type, it contains "Address" entity as navigation property.
I receive a Company DTO object from UI and I map it, using AutoMapper, to Entity object and call objectContext.Save() for saving.
Problem am facing is, "Company" entity values are getting saved but not the "Address" entity. Below are the each object details-
public class CompanyDto
{
public int Id { get; set; }
public string Name { get; set; }
public AddressDto Address { get; set; }
}
with AddressDto as -
public class AddressDto : IDto
{
public int Id { get; set; }
public string Street { get; set; }
public string City { get; set; }
public string PostCode { get; set; }
}
Company Entity (generated by EF - database first)
public partial class tblCompany
{
public tblCompany()
{
this.tblAddresses = new HashSet<tblAddress>();
}
public int ID { get; set; }
public string CompanyName { get; set; }
public virtual ICollection<tblAddress> tblAddresses { get; set; } //navigation property
}
with Address entity is as follows -
public partial class tblAddress
{
public int ID { get; set; }
public int CaseID { get; set; }
public string AddressLine1 { get; set; }
public string AddressLine2 { get; set; }
public string City { get; set; }
public string County { get; set; }
public string PostCode { get; set; }
public virtual tblCase tblCase { get; set; }
}
AutoMapper mapping configuration for converting from DTO to entity
Mapper.CreateMap<CompanyDto, tblCase>()
.ForMember(x => x.ID, opt => opt.MapFrom(cd => cd.Id))
.ForMember(x => x.CompanyName, opt => opt.MapFrom(cd => cd.Name))
.AfterMap((s, d) => d.tblAddresses.Add(new tblAddress
{
AddressLine1 = s.Address.Street,
CaseID = s.Id,
City = s.Address.City,
PostCode = s.Address.PostCode
}));
public void Update(CompanyDto company)
{
//TO DO: check if AutoMapper could map address as well.
var companyDao = Mapper.Map<CompanyDto, tblCase>(company);
_companyRepository.Update(companyDao);
_unitOfWork.Save();
}
Thanks in advance
Sai
It's the first time I use Subsonic.
Let say I have those classes :
public class Store
{
public int Id { get; set; }
public String Name { get; set; }
}
public class Employee
{
public int Id { get; set; }
public String Name { get; set; }
}
An employee is related to a store with is hired date. This means that in the database I will have a middle table With StoreId, EmployeeId, StartDate, EndDate
UPDATE
An employee can work to the StoreA from 2009-01-01 to 2009-04-04 and work for StoreB from 2009-04-05 to ... And I don't want that my data table repeat all the information of my employee each time an employee change the store he working for. In this example employee have only a name, but lets say an employee got 10 property (adress, age, gender ...)
How could I achieve that ?
Based on your comment and the updated question it looks like you want something like the following:
public class Store
{
public int Id { get; set; }
public String Name { get; set; }
}
public class StoreEmployee
{
public int Id { get; set; }
public Employee Employee { get; set; }
public Store Store { get; set; }
public DateTime HiredDate { get; set; }
}
public class Employee
{
public int Id { get; set; }
public String Name { get; set; }
}
You'll actually need a many-to-many relationship which will join an Employee record to a Store Record, with a payload of Start and End Dates.
The Objects will look like this:
public class Store
{
public int Id { get; set; }
public String Name { get; set; }
}
public class Employee
{
public int Id { get; set; }
public String Name { get; set; }
public IList<EmploymentTerm> EmploymentTerms { get; set; }
}
public class EmploymentTerm
{
public int Id { get; set; }
public Store Store { get; set; }
public Employee Employee { get; set; }
public DateTime? StartDate { get; set; }
public DateTime? EndDate { get; set; }
}
Did this freehand so there could be a couple errors.