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OData CRUD operations implementation tips

Suppose I have collection of SupplierEntity need to expose as OData:
1. Inherit from EntitySetController<SupplierEntity, int>
2. For getting collections of SupplierEntity objects, override IQueryable<SupplierEntity> Get() method in base class

public override IQueryable<SupplierEntity> Get()

3. For getting single SupplierEntity object, override GetEntityByKey(int key) method
 
protected override SupplierEntity GetEntityByKey(int key)
 
4. For creating SupplierEntity object, override both CreateEntity(SupplierEntity entity) and GetKey(SupplierEntity entity) methods


protected override SupplierEntityCreateEntity(SupplierEntity entity)

protected override int GetKey(SupplierEntity entity)
 
Note: In CreateEntity method, when the entity has been created in database and the key have been assigned by database, we need to assign this key to entity parameter and return it back to client.

5. For updating SupplierEntity object, override UpdateEntity(int iSupplierID, SupplierEntity entity) method


protected override SupplierEntity UpdateEntity(int key, SupplierEntity update)


5. For deleting SupplierEntity object, override Delete(int key) method

 
public override void Delete(int key)
 
Note: The parameter name has to be key. Otherwise you would get the 404 error.

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