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annotate Implab.ServiceHost/Unity/TypeRegistrationContext.cs @ 273:79110a16cab7 v3

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Working on Unity xml configuration: Refactoring in progress
author cin
date Thu, 26 Apr 2018 19:35:01 +0300
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1 using System;
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2 using System.Collections.Generic;
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3 using System.Linq;
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4 using Unity.Injection;
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5 using Unity.Registration;
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6
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7 namespace Implab.ServiceHost.Unity {
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8 public class TypeRegistrationContext : RegistrationContext {
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9
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10 readonly TypeResolver m_resolver;
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11
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12 readonly List<InjectionMember> m_injections = new List<InjectionMember>();
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13
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14 public InjectionMember[] Injections { get { return m_injections.ToArray(); } }
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15
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16 public Type ImplementationType {
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17 get;
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18 private set;
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19 }
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20
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21 internal TypeRegistrationContext(TypeResolver resolver, Type registrationType, Type implementationType) : base(registrationType) {
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22 ImplementationType = implementationType;
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23
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24 // when registering a generic mapping, register all generic parameter names as local types
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25 if (ImplementationType.IsGenericTypeDefinition) {
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26 m_resolver = new TypeResolver(resolver);
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27
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28 foreach (var p in ImplementationType.GetGenericArguments())
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29 m_resolver.AddMapping(p.Name, p);
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30 } else {
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31 m_resolver = resolver;
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32 }
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33 }
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34
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35 internal void Visit(ConstructorInjectionElement constructorInjection) {
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36 var valueContext = new InjectionValueContext(m_resolver, null);
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37
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38 var parameters = constructorInjection.Parameters?.Select(x => x.Resolve(valueContext)).ToArray();
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39
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40 var injection = parameters != null ? new InjectionConstructor(parameters) : new InjectionConstructor();
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41 m_injections.Add(injection);
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42 }
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43
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44 internal void Visit(MethodInjectionElement methodInjection) {
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45 var valueContext = new InjectionValueContext(m_resolver, null);
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46
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47 var parameters = methodInjection.Parameters?.Select(x => x.Resolve(valueContext)).ToArray();
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48
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49 var injection = parameters != null ? new InjectionMethod(methodInjection.Name, parameters) : new InjectionMethod(methodInjection.Name);
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50 m_injections.Add(injection);
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51 }
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52
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53 internal void Visit(PropertyInjectionElement propertyInjection) {
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54 if (propertyInjection.Value == null)
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55 throw new Exception($"A value value must be specified for the property '{propertyInjection.Name}'");
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56
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57 var propertyType = RegistrationType.GetProperty(propertyInjection.Name)?.PropertyType;
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58 var valueContext = new InjectionValueContext(m_resolver, propertyType);
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59
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60 var parameter = propertyInjection.Value.Resolve(valueContext);
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61 var injection = new InjectionProperty(propertyInjection.Name, parameter);
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62 m_injections.Add(injection);
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63 }
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64 }
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65 }