EF 6 + DevArt Mysql 连接器 + MONO答案

【问题标题】：EF 6 + DevArt Mysql connector + MONOEF 6 + DevArt Mysql 连接器 + MONO
【发布时间】：2013-06-10 13:59:28
【问题描述】：

这是我第一次在 debian 上部署 .net。我的应用程序是使用数据库优先方法使用 Devart mysql 连接器在 win 7 vs2012 中创建和测试的，之后我开始在 linux 上部署它。我遇到了一堆障碍！我已经筋疲力尽了……有人可以帮忙吗？在此之前，我正在考虑购买 devart mysql 连接器 prof 版......这是我的堆栈

System.Data.Entity.Core.MetadataException: Unable to load the specified metadata resource.
at System.Data.Entity.Core.Metadata.Edm.MetadataArtifactLoaderCompositeResource.LoadResources (System.String assemblyName, System.String resourceName, ICollection`1 uriRegistry, System.Data.Entity.Core.Metadata.Edm.MetadataArtifactAssemblyResolver resolver) [0x00000] in <filename unknown>:0
at System.Data.Entity.Core.Metadata.Edm.MetadataArtifactLoaderCompositeResource..ctor (System.String originalPath, System.String assemblyName, System.String resourceName, ICollection`1 uriRegistry, System.Data.Entity.Core.Metadata.Edm.MetadataArtifactAssemblyResolver resolver) [0x00000] in <filename unknown>:0
at System.Data.Entity.Core.Metadata.Edm.MetadataArtifactLoaderCompositeResource.CreateResourceLoader (System.String path, ExtensionCheck extensionCheck, System.String validExtension, ICollection`1 uriRegistry, System.Data.Entity.Core.Metadata.Edm.MetadataArtifactAssemblyResolver resolver) [0x00000] in <filename unknown>:0
at System.Data.Entity.Core.Metadata.Edm.MetadataArtifactLoader.Create (System.String path, ExtensionCheck extensionCheck, System.String validExtension, ICollection`1 uriRegistry, System.Data.Entity.Core.Metadata.Edm.MetadataArtifactAssemblyResolver resolver) [0x00000] in <filename unknown>:0
at System.Data.Entity.Core.Metadata.Edm.MetadataArtifactLoader.Create (System.String path, ExtensionCheck extensionCheck, System.String validExtension, ICollection`1 uriRegistry) [0x00000] in <filename unknown>:0
at System.Data.Entity.Core.Metadata.Edm.MetadataCache.SplitPaths (System.String paths) [0x00000] in <filename unknown>:0
at System.Data.Entity.Core.Common.Utils.Memoizer`2+<>c__DisplayClass2[System.String,System.Collections.Generic.List`1[System.Data.Entity.Core.Metadata.Edm.MetadataArtifactLoader]].<Evaluate>b__0 () [0x00000] in <filename unknown>:0
at System.Data.Entity.Core.Common.Utils.Memoizer`2+Result[System.String,System.Collections.Generic.List`1[System.Data.Entity.Core.Metadata.Edm.MetadataArtifactLoader]].GetValue () [0x00000] in <filename unknown>:0
at System.Data.Entity.Core.Common.Utils.Memoizer`2[System.String,System.Collections.Generic.List`1[System.Data.Entity.Core.Metadata.Edm.MetadataArtifactLoader]].Evaluate (System.String arg) [0x00000] in <filename unknown>:0
at System.Data.Entity.Core.Metadata.Edm.MetadataCache.GetArtifactLoader (System.Data.Entity.Core.EntityClient.Internal.DbConnectionOptions effectiveConnectionOptions) [0x00000] in <filename unknown>:0
at System.Data.Entity.Core.Metadata.Edm.MetadataCache.GetMetadataWorkspace (System.Data.Entity.Core.EntityClient.Internal.DbConnectionOptions effectiveConnectionOptions) [0x00000] in <filename unknown>:0
at System.Data.Entity.Core.EntityClient.EntityConnection.GetMetadataWorkspace () [0x00000] in <filename unknown>:0
at System.Data.Entity.Core.Objects.ObjectContext.RetrieveMetadataWorkspaceFromConnection () [0x00000] in <filename unknown>:0
at System.Data.Entity.Core.Objects.ObjectContext..ctor (System.Data.Entity.Core.EntityClient.EntityConnection connection, Boolean isConnectionConstructor, System.Data.Entity.Core.Objects.Internal.ObjectQueryExecutionPlanFactory objectQueryExecutionPlanFactory, System.Data.Entity.Core.Common.Internal.Materialization.Translator translator, System.Data.Entity.Core.Query.InternalTrees.ColumnMapFactory columnMapFactory) [0x00000] in <filename unknown>:0
at System.Data.Entity.Core.Objects.ObjectContext..ctor (System.String connectionString) [0x00000] in <filename unknown>:0
at System.Data.Entity.Core.Objects.ObjectContext..ctor (System.String connectionString, System.String defaultContainerName) [0x00000] in <filename unknown>:0
at PararuLibrary.Databases.Mysql.PararuRuMysqlEntities..ctor () [0x00000] in /home/dotnetprojects/WebService1/PararuLibrary/Databases/Mysql/PararyEDM.Designer.cs:52
at PararuLibrary.Repositories.UserRepository..ctor () [0x00000] in /home/dotnetprojects/WebService1/PararuLibrary/Repositories/UserRepository.cs:24
at ConsoleTest.Program.Proceed () [0x00040] in /home/dotnetprojects/WebService1/ConsoleTest/Program.cs:28
at ConsoleTest.Program.Main (System.String[] args) [0x00001] in /home/dotnetprojects/WebService1/ConsoleTest/Program.cs:22

之后，我在连接字符串中应用了 App.config 中的更改：

<add name="PararuRuEntitiesCS" connectionString="metadata=res://*/Databases.Mysql.PararyEDM.csdl|res://*/Databases.Mysql.PararyEDM.ssdl|res://*/Databases.Mysql.PararyEDM.msl;provider=Devart.Data.MySql;provider connection string=&quot;User Id=root;Host=localhost;Database=pararu_ru;Persist Security Info=True&quot;" providerName="System.Data.EntityClient" />

到...

<add name="PararuRuEntitiesCS" connectionString="metadata=res://PararuLibrary/Databases.Mysql.PararyEDM.csdl|res://PararuLibrary/Databases.Mysql.PararyEDM.ssdl|res://PararuLibrary/Databases.Mysql.PararyEDM.msl;provider=Devart.Data.MySql;provider connection string=&quot;User Id=root;Host=localhost;Database=pararu_ru;Persist Security Info=True&quot;"
      providerName="System.Data.EntityClient" />

...我有这个...

System.NotImplementedException: The requested feature is not implemented.
  at System.Reflection.AssemblyName.ReferenceMatchesDefinition (System.Reflection.AssemblyName reference, System.Reflection.AssemblyName definition) [0x00000] in <filename unknown>:0
  at System.Data.Entity.Core.Metadata.Edm.DefaultAssemblyResolver.ResolveAssembly (System.Reflection.AssemblyName referenceName) [0x00000] in <filename unknown>:0
  at System.Data.Entity.Core.Metadata.Edm.DefaultAssemblyResolver.TryResolveAssemblyReference (System.Reflection.AssemblyName refernceName, System.Reflection.Assembly& assembly) [0x00000] in <filename unknown>:0
  at System.Data.Entity.Core.Metadata.Edm.MetadataArtifactLoaderCompositeResource.ResolveAssemblyName (System.String assemblyName, System.Data.Entity.Core.Metadata.Edm.MetadataArtifactAssemblyResolver resolver) [0x00000] in <filename unknown>:0
  at System.Data.Entity.Core.Metadata.Edm.MetadataArtifactLoaderCompositeResource.CreateResourceLoader (System.String path, ExtensionCheck extensionCheck, System.String validExtension, ICollection`1 uriRegistry, System.Data.Entity.Core.Metadata.Edm.MetadataArtifactAssemblyResolver resolver) [0x00000] in <filename unknown>:0
  at System.Data.Entity.Core.Metadata.Edm.MetadataArtifactLoader.Create (System.String path, ExtensionCheck extensionCheck, System.String validExtension, ICollection`1 uriRegistry, System.Data.Entity.Core.Metadata.Edm.MetadataArtifactAssemblyResolver resolver) [0x00000] in <filename unknown>:0
  at System.Data.Entity.Core.Metadata.Edm.MetadataArtifactLoader.Create (System.String path, ExtensionCheck extensionCheck, System.String validExtension, ICollection`1 uriRegistry) [0x00000] in <filename unknown>:0
  at System.Data.Entity.Core.Metadata.Edm.MetadataCache.SplitPaths (System.String paths) [0x00000] in <filename unknown>:0
  at System.Data.Entity.Core.Common.Utils.Memoizer`2+<>c__DisplayClass2[System.String,System.Collections.Generic.List`1[System.Data.Entity.Core.Metadata.Edm.MetadataArtifactLoader]].<Evaluate>b__0 () [0x00000] in <filename unknown>:0
  at System.Data.Entity.Core.Common.Utils.Memoizer`2+Result[System.String,System.Collections.Generic.List`1[System.Data.Entity.Core.Metadata.Edm.MetadataArtifactLoader]].GetValue () [0x00000] in <filename unknown>:0
  at System.Data.Entity.Core.Common.Utils.Memoizer`2[System.String,System.Collections.Generic.List`1[System.Data.Entity.Core.Metadata.Edm.MetadataArtifactLoader]].Evaluate (System.String arg) [0x00000] in <filename unknown>:0
  at System.Data.Entity.Core.Metadata.Edm.MetadataCache.GetArtifactLoader (System.Data.Entity.Core.EntityClient.Internal.DbConnectionOptions effectiveConnectionOptions) [0x00000] in <filename unknown>:0
  at System.Data.Entity.Core.Metadata.Edm.MetadataCache.GetMetadataWorkspace (System.Data.Entity.Core.EntityClient.Internal.DbConnectionOptions effectiveConnectionOptions) [0x00000] in <filename unknown>:0
  at System.Data.Entity.Core.EntityClient.EntityConnection.GetMetadataWorkspace () [0x00000] in <filename unknown>:0
  at System.Data.Entity.Core.Objects.ObjectContext.RetrieveMetadataWorkspaceFromConnection () [0x00000] in <filename unknown>:0
  at System.Data.Entity.Core.Objects.ObjectContext..ctor (System.Data.Entity.Core.EntityClient.EntityConnection connection, Boolean isConnectionConstructor, System.Data.Entity.Core.Objects.Internal.ObjectQueryExecutionPlanFactory objectQueryExecutionPlanFactory, System.Data.Entity.Core.Common.Internal.Materialization.Translator translator, System.Data.Entity.Core.Query.InternalTrees.ColumnMapFactory columnMapFactory) [0x00000] in <filename unknown>:0
  at System.Data.Entity.Core.Objects.ObjectContext..ctor (System.String connectionString) [0x00000] in <filename unknown>:0
  at System.Data.Entity.Core.Objects.ObjectContext..ctor (System.String connectionString, System.String defaultContainerName) [0x00000] in <filename unknown>:0
  at PararuLibrary.Databases.Mysql.PararuRuMysqlEntities..ctor () [0x00000] in /home/dotnetprojects/WebService1/PararuLibrary/Databases/Mysql/PararyEDM.Designer.cs:52
  at PararuLibrary.Repositories.UserRepository..ctor () [0x00000] in /home/dotnetprojects/WebService1/PararuLibrary/Repositories/UserRepository.cs:24
  at ConsoleTest.Program.Proceed () [0x00040] in /home/dotnetprojects/WebService1/ConsoleTest/Program.cs:28
  at ConsoleTest.Program.Main (System.String[] args) [0x00001] in /home/dotnetprojects/WebService1/ConsoleTest/Program.cs:22

【问题讨论】：

标签： mysql mono devart

【解决方案1】：

它看起来像一个 Mono 错误。尝试以下解决方法：将“元数据工件处理”模型属性值从“嵌入输出程序集”更改为“复制到输出目录”。保存模型，在 Windows 上重建项目以确保其正常工作，然后在 Mono 上进行部署。

【讨论】：

【解决方案2】：

错误很明显：该方法未在 Mono 中实现。

Mono 是一个开源项目。如果没有像您这样的人的贡献，它就无法不断发展。请考虑为该方法贡献一个实现（不要查看 MS 来源，因为它无效）。

【讨论】：