/// <summary>
/// Creates a contract description for the domain data service endpoint based on the domain service description.
/// </summary>
/// <param name="description">Domain data service description.</param>
/// <returns>Contract description for the domain data service endpoint.</returns>
private ContractDescription CreateContract(DomainServiceDescription description)
{
Type domainServiceType = description.DomainServiceType;
ServiceDescription serviceDesc = ServiceDescription.GetService(domainServiceType);
// Use names from [ServiceContract], if specified.
ServiceContractAttribute sca = TypeDescriptor.GetAttributes(domainServiceType)[typeof(ServiceContractAttribute)] as ServiceContractAttribute;
if (sca != null)
{
if (!String.IsNullOrEmpty(sca.Name))
{
serviceDesc.Name = sca.Name;
}
if (!String.IsNullOrEmpty(sca.Namespace))
{
serviceDesc.Name = sca.Namespace;
}
}
ContractDescription contractDesc = new ContractDescription(serviceDesc.Name + this.Name, serviceDesc.Namespace)
{
ConfigurationName = serviceDesc.ConfigurationName + this.Name,
ContractType = domainServiceType
};
// Disable metadata generation for the domain data service contract.
contractDesc.Behaviors.Add(new ServiceMetadataContractBehavior(true));
// Add domain service behavior which takes care of instantiating DomainServices.
ServiceUtils.EnsureBehavior <DomainDataServiceContractBehavior>(contractDesc);
// Load the ContractDescription from the DomainServiceDescription.
this.LoadContractDescription(contractDesc, description);
return(contractDesc);
}
/// <summary>
/// Create operation corresponding to given DomainService operation.
/// </summary>
/// <param name="declaringContract">Contract to which operation will belong.</param>
/// <param name="operation">DomainService operation.</param>
/// <returns>Created operation.</returns>
private static OperationDescription CreateOperationDescription(ContractDescription declaringContract, DomainOperationEntry operation)
{
OperationDescription operationDesc = new OperationDescription(operation.Name, declaringContract);
// Propagate behaviors.
foreach (IOperationBehavior behavior in operation.Attributes.OfType <IOperationBehavior>())
{
operationDesc.Behaviors.Add(behavior);
}
// Add standard web behaviors.
if ((operation.Operation == DomainOperation.Query && ((QueryAttribute)operation.OperationAttribute).HasSideEffects) ||
(operation.Operation == DomainOperation.Invoke && ((InvokeAttribute)operation.OperationAttribute).HasSideEffects))
{
// For operations with side-effects i.e. with WebInvoke attribute, we need to build a default GET like
// URI template so that, the parameter processing is taken care of by the WebHttpBehavior selector.
WebInvokeAttribute attrib = ServiceUtils.EnsureBehavior <WebInvokeAttribute>(operationDesc);
if (attrib.UriTemplate == null)
{
attrib.UriTemplate = ODataEndpointFactory.BuildDefaultUriTemplate(operation);
}
}
else
{
ServiceUtils.EnsureBehavior <WebGetAttribute>(operationDesc);
}
string action = ServiceUtils.GetRequestMessageAction(declaringContract, operationDesc.Name, null);
// Define operation input.
MessageDescription inputMessageDesc = new MessageDescription(action, MessageDirection.Input);
inputMessageDesc.Body.WrapperName = operationDesc.Name;
inputMessageDesc.Body.WrapperNamespace = ServiceUtils.DefaultNamespace;
for (int i = 0; i < operation.Parameters.Count; i++)
{
DomainOperationParameter parameter = operation.Parameters[i];
MessagePartDescription parameterPartDesc = new MessagePartDescription(parameter.Name, ServiceUtils.DefaultNamespace)
{
Index = i,
Type = TypeUtils.GetClientType(parameter.ParameterType)
};
inputMessageDesc.Body.Parts.Add(parameterPartDesc);
}
operationDesc.Messages.Add(inputMessageDesc);
// Define operation output.
string responseAction = ServiceUtils.GetResponseMessageAction(declaringContract, operationDesc.Name, null);
MessageDescription outputMessageDesc = new MessageDescription(responseAction, MessageDirection.Output);
outputMessageDesc.Body.WrapperName = operationDesc.Name + "Response";
outputMessageDesc.Body.WrapperNamespace = ServiceUtils.DefaultNamespace;
if (operation.ReturnType != typeof(void))
{
outputMessageDesc.Body.ReturnValue = new MessagePartDescription(operationDesc.Name + "Result", ServiceUtils.DefaultNamespace)
{
Type = TypeUtils.GetClientType(operation.ReturnType)
};
}
operationDesc.Messages.Add(outputMessageDesc);
return(operationDesc);
}
