/// <summary>Constructs the operation selector for runtime.</summary>
/// <param name="endpoint">End point.</param>
/// <param name="metadata">Domain data service metadata.</param>
public DomainDataServiceOperationSelector(
ServiceEndpoint endpoint,
DomainDataServiceMetadata metadata)
: base(DomainDataServiceOperationSelector.ExtractNonRootQueryServiceOperations(endpoint, metadata))
{
this.baseUri = endpoint.ListenUri;
this.serviceRootQueryOperations = new Dictionary <string, string>();
// Collect all the query operations, since they are to be handled by selector in this class.
foreach (var od in endpoint.Contract.Operations)
{
string resourceSetName = DomainDataServiceOperationSelector.GetRootQueryOperation(od, metadata);
if (!String.IsNullOrEmpty(resourceSetName))
{
Debug.Assert(!this.serviceRootQueryOperations.ContainsKey(resourceSetName), "There should only be 1 default query operation per set.");
// Note the fact that requests on resourceSet correspond to the given operation.
this.serviceRootQueryOperations.Add(resourceSetName, od.Name);
}
}
}
/// <summary>
/// Obtains the service operations available on the model and hands over all those
/// operations to the base class for processing. The root query operations are
/// handled by this class itself.
/// </summary>
/// <param name="endpoint">Endpoint on which operations are defined.</param>
/// <param name="metadata">Metadata of the domain service.</param>
/// <returns>Endpoint that contains all the operations that base class needs to process.</returns>
private static ServiceEndpoint ExtractNonRootQueryServiceOperations(ServiceEndpoint endpoint, DomainDataServiceMetadata metadata)
{
ContractDescription cd = new ContractDescription(endpoint.Contract.Name);
// Provide all the non-root query operations to the base class, only provide those operations that
// have some representation on the domain data service.
foreach (OperationDescription od in endpoint.Contract.Operations)
{
if (metadata.ServiceOperations.Keys.Contains(od.Name))
{
Debug.Assert(
String.IsNullOrEmpty(DomainDataServiceOperationSelector.GetRootQueryOperation(od, metadata)),
"Service operation must not be a root query operation.");
cd.Operations.Add(od);
}
}
return(new ServiceEndpoint(cd, endpoint.Binding, endpoint.Address)
{
ListenUri = endpoint.ListenUri
});
}