Fix compatibility of Fluent Context and Add OpenAccess Service wizard

Article information
Article relates to	Telerik OpenAccess ORM
Created by	Viktor Zhivkov
Last modified	September 14, 2012
Last modified by	Doroteya Agayna

DESCRIPTION

If you experience the following error “Type ‘[FLUENT MODEL CONTEXT TYPE NAME]’ is currently incompatible with Add OpenAccess Service. In order to make it compatible please follow the online instructions.” while trying to add OpenAccess Service you can use any of the provided solutions in order to fix the compatibility issue.


  
The issue is related to the way Add OpenAccess Service wizard discovers the context model types. There are two ways that can solve it:

1. Provide specially named static field for MetadataSource or MetadataContainer
2. Provide a way to initialize an instance of the context model using default or single System.String parameter constructors

After applying either of the solutions please rebuild your project/solution and run the wizard again.
For more details how to implement the recommended approaches see the sections below.

SOLUTION 1 - Declare and initialize a private static field

Use MetadataSource:
Add the following code to your Fluent Context Model class:

private static MetadataSource metadataSource;

You can initialize the field with any of the three possible metadata source types:
• AttributesMetadataSource
• XmlMetadataSource
• FluentModelMetadataSource

Use MetadataContainer:
Add the following code to your Fluent Context Model class:

You can initialize the field using GetModel() method of your MetadataSource.

SOLUTION 2 – Provide expected constructor

Add OpenAccess Service can initialize a context model using either its default constructor or using a constructor that has single System.String parameter.

NOTE: The single System.String parameter is intended to be invoked with connection string.