mcs/class/referencesource/System.Data.Entity/System/Data/Metadata/CustomAssemblyResolver.cs

   1 //---------------------------------------------------------------------
   2 // <copyright file="CustomAssemblyResolver.cs" company="Microsoft">
   3 //      Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 //
   6 // @owner       Microsoft
   7 // @backupOwner Microsoft
   8 //---------------------------------------------------------------------
   9 namespace System.Data.Metadata.Edm
  10 {
  11     using System.Collections.Generic;
  12     using System.Data.Entity;
  13     using System.Diagnostics;
  14     using System.Reflection;
  15
  16     internal class CustomAssemblyResolver : MetadataArtifactAssemblyResolver
  17     {
  18         private Func<AssemblyName, Assembly> _referenceResolver;
  19         private Func<IEnumerable<Assembly>> _wildcardAssemblyEnumerator;
  20
  21         internal CustomAssemblyResolver(Func<IEnumerable<Assembly>> wildcardAssemblyEnumerator, Func<AssemblyName, Assembly> referenceResolver)
  22         {
  23             Debug.Assert(wildcardAssemblyEnumerator != null);
  24             Debug.Assert(referenceResolver != null);
  25             _wildcardAssemblyEnumerator = wildcardAssemblyEnumerator;
  26             _referenceResolver = referenceResolver;
  27         }
  28
  29         internal override bool TryResolveAssemblyReference(AssemblyName refernceName, out Assembly assembly)
  30         {
  31             assembly = _referenceResolver(refernceName);
  32             return assembly != null;
  33         }
  34
  35         internal override IEnumerable<Assembly> GetWildcardAssemblies()
  36         {
  37             IEnumerable<Assembly> wildcardAssemblies = _wildcardAssemblyEnumerator();
  38             if (wildcardAssemblies == null)
  39             {
  40                 throw EntityUtil.InvalidOperation(Strings.WildcardEnumeratorReturnedNull);
  41             }
  42             return wildcardAssemblies;
  43
  44         }
  45     }
  46 }