/// <summary>
/// Initializes all service actions in the provider.
/// </summary>
/// <param name="operationContext">The operation context instance of the request.</param>
private void InitializeServiceActions(DataServiceOperationContext operationContext)
{
if (operationContext == null)
{
throw new DataServiceException("operationContext must not be null!");
}
var actionInfos = Interlocked.Exchange(ref this.serviceActionInfos, new Dictionary <string, DSPServiceActionInfo>());
if (actionInfos.Count > 0)
{
IDataServiceMetadataProvider metadataProvider = (IDataServiceMetadataProvider)operationContext.GetService(typeof(IDataServiceMetadataProvider));
if (metadataProvider == null)
{
throw new DataServiceException("DataServiceOperationContext.GetService(typeof(IDataServiceMetadataProvider)) must return a valid instance of the IDataServiceMetadataProvider.");
}
foreach (var entry in actionInfos)
{
DSPServiceActionInfo actionInfo = entry.Value;
DSPActionAttribute actionAttribute = actionInfo.ActionAttribute;
MethodInfo actionMethodInfo = actionInfo.Method;
ResourceType returnType = DSPActionProvider.GetResourceTypeFromType(metadataProvider, actionInfo.Method.ReturnType, actionAttribute.ReturnElementTypeName);
var parameters = DSPActionProvider.GetServiceActionParameters(metadataProvider, actionAttribute, actionMethodInfo);
ServiceAction action;
if (!string.IsNullOrEmpty(actionAttribute.ReturnSetPath))
{
if (actionAttribute.OperationParameterBindingKind != OperationParameterBindingKind.Always && actionAttribute.OperationParameterBindingKind != OperationParameterBindingKind.Sometimes)
{
throw new DataServiceException("DSPActionAttribute.IsBindable must be true when DSPActionAttribute.ReturnSetPath is not null.");
}
ResourceSetPathExpression pathExpression = new ResourceSetPathExpression(actionAttribute.ReturnSetPath);
action = new ServiceAction(actionMethodInfo.Name, returnType, OperationParameterBindingKind.Sometimes, parameters, pathExpression);
}
else
{
ResourceSet returnSet = null;
if (!string.IsNullOrEmpty(actionAttribute.ReturnSet))
{
metadataProvider.TryResolveResourceSet(actionAttribute.ReturnSet, out returnSet);
}
action = new ServiceAction(actionMethodInfo.Name, returnType, returnSet, actionAttribute.OperationParameterBindingKind, parameters);
}
action.CustomState = actionInfo;
action.SetReadOnly();
this.serviceActions.Add(actionMethodInfo.Name, action);
}
}
}
/// <summary>
/// Initializes a new <see cref="ServiceAction"/> instance.
/// </summary>
/// <param name="method">The methodInfo for the operation.</param>
/// <param name="instance">The instance on which to invoke the operation.</param>
public void AddAction(MethodInfo method, object instance = null)
{
DSPActionAttribute actionAttribute = method.GetCustomAttributes(typeof(DSPActionAttribute), true /*inherit*/).OfType <DSPActionAttribute>().FirstOrDefault();
if (actionAttribute == null)
{
throw new InvalidOperationException("The method '" + method.Name + "' must contain a DSPActionAttribute.");
}
DSPServiceActionInfo actionInfo = new DSPServiceActionInfo {
ActionAttribute = actionAttribute, Method = method, Instance = instance
};
this.serviceActionInfos.Add(method.Name, actionInfo);
}
