The ObjectMapper .NET Project

The first ObjectMapper .NET tutorial shows how to create a valid DDL file out of your business entities.

First we will need some business entities. In terminology of the ObjectMapper .NET, Business Entities are called "ValueObjects". That is because they will only contain the raw values.

In the first draw we will have an user class, his marketplace items and the bids. Our szenario: A user wants to sell marketplace items to an other user which can place bids on the items.

To export the entities we have to add the entity types to an ArrayList(). 

///<summary>

/// Gets the business entity types.

///</summary>

///<value>The business entity types.</value>

private ArrayList BusinessEntityTypes

{

      get

      {

            ArrayList result = new ArrayList();

            result.Add(typeof(User));

            result.Add(typeof(MarketplaceItem));

            result.Add(typeof(Bid));

                 

            return result;

      }

}

///<summary>

/// Exports the access DDL.

///</summary>

private void ExportAccessDDL()

{

      IPersister accessPersister = new AccessPersister();

      ObjectMapper mapper = CreateMapper(accessPersister);

      mapper.WriteSchema("Marketplace.access.sql", BusinessEntityTypes);

      mapper.Dispose();

 

      ShowFile("Marketplace.access.sql");

}