change the Patient class to Person in the service

Since all persons can be patients it doesn't make sense to have a seperate
Patient class.

Server/Server/DB/Context.cs

@@ -9,7 +9,6 @@ namespace Server.DB
         public Context() : base("EhecDB") { }
         public DbSet<Doctor> Doctors { get; set; }
         public DbSet<Person> Persons { get; set; }
-        public DbSet<Patient> Patients { get; set; }
         public DbSet<Exam> Exams { get; set; }
         public DbSet<City> Cities { get; set; }
         public DbSet<Country> Countries { get; set; }

Server/Server/DB/PatientDB.cs

@@ -1,75 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using Server.Models;
-
-namespace Server.DB
-{
-    public class PatientDB
-    {
-        public ICollection<Patient> GetAllPatients()
-        {
-            using (Context ctx = new Context())
-            {
-                ctx.Configuration.ProxyCreationEnabled = false;
-                return ctx.Patients
-                    .Include("Gender")
-                    .Include("City")
-                    .Include("Salutation")
-                    .ToList();
-            }
-        }
-        public bool CreatePatient(Patient doctor)
-        {
-            try
-            {
-                using (Context ctx = new Context())
-                {
-                    ctx.Patients.Add(doctor);
-                    ctx.SaveChanges();
-                }
-                return true;
-            }
-            catch (Exception)
-            {
-                return false;
-            }
-        }
-
-        public bool UpdatePatient(Patient doctor)
-        {
-            try
-            {
-                using (Context ctx = new Context())
-                {
-                    ctx.Patients.Attach(doctor);
-                    ctx.Entry(doctor).State = System.Data.Entity.EntityState.Modified;
-                    ctx.SaveChanges();
-                }
-                return true;
-            }
-            catch (Exception)
-            {
-                return false;
-            }
-
-        }
-        public bool DeletePatient(Patient doctor)
-        {
-            try
-            {
-                using (Context ctx = new Context())
-                {
-                    ctx.Patients.Attach(doctor);
-                    ctx.Patients.Remove(doctor);
-                    ctx.SaveChanges();
-                }
-                return true;
-            }
-            catch (Exception)
-            {
-                return false;
-            }
-        }
-    }
-}

Server/Server/IService.cs

@@ -39,6 +39,6 @@ namespace Server
         [OperationContract]
         ICollection<PatientAtFoodPlace> GetRelations();
         [OperationContract]
-        ICollection<Patient> GetPatients();
+        ICollection<Person> GetPersons();
     }
 }

Server/Server/Models/Patient.cs

@@ -1,23 +0,0 @@
-using System.Runtime.Serialization;
-using System.ComponentModel.DataAnnotations.Schema;
-
-namespace Server.Models
-{
-    [Table("Patients")]
-    [DataContract]
-    public class Patient : Person
-    {
-        public Patient() { }
-        public Patient(string firstName, string lastName, Gender gender, Salutation salutation,
-                       string streetName, string streetNumber, City city)
-        {
-            this.FirstName = firstName;
-            this.LastName = lastName;
-            this.Gender = gender;
-            this.Salutation = salutation;
-            this.StreetName = streetName;
-            this.StreetNumber = streetNumber;
-            this.City = city;
-        }
-    }
-}

Server/Server/Models/Person.cs

@@ -4,6 +4,7 @@ using System.Runtime.Serialization;
 namespace Server.Models
 {
     [DataContract]
+    [KnownType(typeof(Doctor))]
     public class Person
     {
         private int _PersonID;

Server/Server/Server.csproj

@@ -101,7 +101,6 @@
     <Compile Include="DB\ExamDB.cs" />
     <Compile Include="DB\GenderDB.cs" />
     <Compile Include="DB\PatientAtFoodPlaceDB.cs" />
-    <Compile Include="DB\PatientDB.cs" />
     <Compile Include="DB\PersonDB.cs" />
     <Compile Include="DB\SalutationDB.cs" />
     <Compile Include="Helper\EntitiesContextInitializer.cs" />
@@ -128,7 +127,6 @@
     <Compile Include="Models\FoodPlace.cs" />
     <Compile Include="Models\Gender.cs" />
     <Compile Include="Models\Node.cs" />
-    <Compile Include="Models\Patient.cs" />
     <Compile Include="Models\PatientAtFoodPlace.cs" />
     <Compile Include="Models\Person.cs" />
     <Compile Include="Models\Salutation.cs" />

Server/Server/Service.svc.cs

@@ -92,10 +92,10 @@ namespace Server
             dataaccess.CreateStrain(strain);
         }
 
-        public ICollection<Patient> GetPatients()
+        public ICollection<Person> GetPersons()
         {
-            PatientDB dataaccess = new PatientDB();
-            return dataaccess.GetAllPatients();
+            PersonDB dataaccess = new PersonDB();
+            return dataaccess.GetAllPersons();
         }
 
         public void WriteRelation(PatientAtFoodPlace relation)