/// <summary>
/// Populates a contract description from a domain service description.
/// </summary>
/// <param name="contractDesc">Contract description to populate.</param>
/// <param name="domainServiceDescription">Domain service description.</param>
private void LoadContractDescription(ContractDescription contractDesc, DomainServiceDescription domainServiceDescription)
{
OperationDescription operationDesc;
Debug.Assert(this.domainDataServiceMetadata != null, "this.domainDataServiceMetadata != null");
// Create contract operations by inferring them from the [Query] & [Invoke] methods on the domain service.
foreach (DomainOperationEntry operation in domainServiceDescription.DomainOperationEntries)
{
if (this.domainDataServiceMetadata.Sets.ContainsKey(operation.Name) || this.domainDataServiceMetadata.ServiceOperations.ContainsKey(operation.Name))
{
switch (operation.Operation)
{
case DomainOperation.Query:
operationDesc = ODataEndpointFactory.CreateQueryOperationDescription(contractDesc, operation);
Type queryOperationType = typeof(DomainDataServiceQueryOperationBehavior <>).MakeGenericType(operation.AssociatedType);
// Add as first behavior such that our operation invoker is the first in the chain.
operationDesc.Behaviors.Insert(0, (IOperationBehavior)Activator.CreateInstance(queryOperationType, operation));
contractDesc.Operations.Add(operationDesc);
break;
case DomainOperation.Invoke:
operationDesc = ODataEndpointFactory.CreateOperationDescription(contractDesc, operation);
// Add as first behavior such that our operation invoker is the first in the chain.
operationDesc.Behaviors.Insert(0, new DomainDataServiceInvokeOperationBehavior(operation));
contractDesc.Operations.Add(operationDesc);
break;
default:
break;
}
}
}
}
/// <summary>
/// Create operation corresponding to given DomainService query operation.
/// </summary>
/// <param name="declaringContract">Contract to which operation will belong.</param>
/// <param name="operation">DomainService query operation.</param>
/// <returns>Created operation.</returns>
private static OperationDescription CreateQueryOperationDescription(ContractDescription declaringContract, DomainOperationEntry operation)
{
OperationDescription operationDesc = ODataEndpointFactory.CreateOperationDescription(declaringContract, operation);
// Change the return type to QueryResult<TEntity>.
operationDesc.Messages[1].Body.ReturnValue.Type = typeof(IEnumerable <>).MakeGenericType(operation.AssociatedType);
return(operationDesc);
}
