MetadataContainer: An element with the same key already exists

[Markus]

Hello,

I am trying to migrate my project to OpenAccess 2015.3 and fluent mapping. When to load data e.g. GetAll an ArgumentException is thrown:

 

An element with the same key already exists in the Dictionary

   bei System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
   bei System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
   bei System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)
   bei OpenAccessRuntime.DataObjectsRootBuilder.CreateFieldExtension(DataObjectsClass dataObjectsClass, List`1 fields, Dictionary`2 nameElementMap, MetaMember member)
   bei OpenAccessRuntime.DataObjectsRootBuilder.CreateFieldExtensions(DataObjectsClass dataObjectsClass, MetaType pcType)
   bei OpenAccessRuntime.DataObjectsRootBuilder.FromMetadataContainer(MetadataContainer metadataContainer)
   bei OpenAccessRuntime.DatabaseAdapter.AssertPersistenceManagerFactory(String usr, String password, Boolean open)
   bei OpenAccessRuntime.DatabaseAdapter.GetObjectScope(TransactionProvider provider)
   bei Telerik.OpenAccess.Database.GetObjectScope(TransactionProvider provider)
   bei Telerik.OpenAccess.OpenAccessContextBase.GetScope()
   bei Telerik.OpenAccess.OpenAccessContext.GetAllCore[T]()
   bei Telerik.OpenAccess.OpenAccessContext.GetAll[T]()

 

I guess I have duplicate meta data configurations. But how to out which class? I tried to activate logging but with no result.

 

Markus

 

[Markus]

Problem solved!

Wrote my own tool to find duplicate field mappings:

    

MyMetadataSource metaDataSource = new MyMetadataSource();
Telerik.OpenAccess.Metadata.MetadataContainer metadataContainer = metaDataSource.GetModel();


foreach( Telerik.OpenAccess.Metadata.MetaPersistentType metaPersistentType in metadataContainer.PersistentTypes )
{
    IDictionary<string, string> typeMemberDict = new Dictionary<string,string>();

    foreach( Telerik.OpenAccess.Metadata.MetaMember metaMember in metaPersistentType.Members )
    {
         if( typeMemberDict.ContainsKey(metaMember.Name) == false )
              typeMemberDict.Add(metaMember.Name, metaMember.Name);
         else
              Console.WriteLine("Doppeltes Feld: " + metaPersistentType.Name     "." +  metaMember.Name);
    }
}

[Kaloyan Nikolov]

Hello Markus,

That is the easiest way to detect the duplicates. 

In case you need any further assistance do not hesitate to get back to us. 

Regards,
Kaloyan Nikolov
Telerik