private object TransformColectionWithLock(
ILocallyControlledNamedGraphSelector locallyControlledNamedGraphSelector,
object result,
RequestInfo request,
int totalItems,
int skip,
int take)
{
lock (locallyControlledNamedGraphSelector)
{
var requestId = Guid.NewGuid().ToString();
var graphUri = (Uri)request.Url.WithFragment(requestId);
var collectionId = new EntityId((Uri)request.Url);
var viewId = new EntityId((Uri)request.Url.WithFragment("view-" + requestId));
locallyControlledNamedGraphSelector.MapEntityGraphForRequest(request, collectionId, graphUri);
locallyControlledNamedGraphSelector.MapEntityGraphForRequest(request, viewId, graphUri);
result = TransformCollection(result, request.Url, totalItems, skip, take);
_entityContextProvider.EntityContext.Disposed += () =>
{
_entityContextProvider.TripleStore.Remove(graphUri);
locallyControlledNamedGraphSelector.UnmapEntityGraphForRequest(request, collectionId);
locallyControlledNamedGraphSelector.UnmapEntityGraphForRequest(request, viewId);
};
}
return(result);
}
private IApiDocumentation GetApiEntryPointDescription(string fileExtension)
{
var namedGraphSelector = _namedGraphSelectorFactory.NamedGraphSelector;
ILocallyControlledNamedGraphSelector locallyControlledNamedGraphSelector = namedGraphSelector as ILocallyControlledNamedGraphSelector;
return(locallyControlledNamedGraphSelector != null?
GetApiEntryPointDescriptionWithLock(fileExtension, locallyControlledNamedGraphSelector) :
BuildApiDocumentation(fileExtension, (Uri)((HttpUrl)Response.Request.Url).WithFragment(String.Empty)));
}
/// <inheritdoc />
public Task <object> Transform(IRequestMapping requestMapping, IRequestInfo request, object result, object[] arguments)
{
RequestInfo requestInfo;
MethodInfo underlyingMethod;
if (!CanOutputHypermedia((underlyingMethod = requestMapping.Operation.UnderlyingMethod).ReturnType, requestInfo = request as RequestInfo))
{
return(Task.FromResult(result));
}
int totalItems = ((IEnumerable)result).Cast <object>().Count();
int skip = 0;
int take = 0;
bool canOutputHypermedia = false;
KeyValuePair <Verb, MethodInfo> method;
if ((requestMapping.Target.GetType().GetImplementationOfAny(typeof(IController <>), typeof(IAsyncController <>)) != null) &&
(!Equals(method = requestMapping.Target.GetType().DiscoverCrudMethods().FirstOrDefault(entry => entry.Value == underlyingMethod), default(KeyValuePair <Verb, MethodInfo>))))
{
switch (method.Key.ToString())
{
case "":
var parameters = underlyingMethod.GetParameters();
var resultingValues = arguments.Where((item, index) => parameters[index].IsOut).ToList();
totalItems = (resultingValues.Count > 0 ? (int)resultingValues[0] : -1);
if ((arguments[1] != null) && (arguments[2] != null))
{
skip = (int)arguments[1];
take = ((take = (int)arguments[2]) == 0 ? 0 : Math.Min(take, totalItems));
canOutputHypermedia = (requestMapping.ArgumentSources[1] == ArgumentValueSources.Bound) && (requestMapping.ArgumentSources[2] == ArgumentValueSources.Bound);
}
break;
}
}
if (!canOutputHypermedia)
{
return(Task.FromResult(result));
}
var namedGraphSelector = _namedGraphSelectorFactory.NamedGraphSelector;
ILocallyControlledNamedGraphSelector locallyControlledNamedGraphSelector = namedGraphSelector as ILocallyControlledNamedGraphSelector;
result = (locallyControlledNamedGraphSelector == null ? TransformCollection(result, requestInfo.Url, totalItems, skip, take) :
TransformColectionWithLock(locallyControlledNamedGraphSelector, result, requestInfo, totalItems, skip, take));
return(Task.FromResult(result));
}
private IApiDocumentation GetApiEntryPointDescriptionWithLock(string fileExtension, ILocallyControlledNamedGraphSelector locallyControlledNamedGraphSelector)
{
IApiDocumentation result;
lock (locallyControlledNamedGraphSelector)
{
Uri graphUri;
HttpUrl url = Response.Request.Url as HttpUrl;
if (url != null)
{
if (url.HasParameters)
{
url = (HttpUrl)url.WithoutParameters();
}
graphUri = (Uri)url.WithFragment(String.Empty);
}
else
{
graphUri = (Uri)Response.Request.Url;
}
result = BuildApiDocumentation(fileExtension, locallyControlledNamedGraphSelector.NamedGraph = graphUri);
_entityContextProvider.EntityContext.Disposed += () => _entityContextProvider.TripleStore.Remove(graphUri);
locallyControlledNamedGraphSelector.NamedGraph = null;
}
return(result);
}
private object TransformColectionWithLock(
ILocallyControlledNamedGraphSelector locallyControlledNamedGraphSelector,
object result,
RequestInfo request,
int totalItems,
int skip,
int take)
{
lock (locallyControlledNamedGraphSelector)
{
var requestId = Guid.NewGuid().ToString();
var graphUri = (Uri)request.Url.WithFragment(requestId);
var collectionId = new EntityId((Uri)request.Url);
var viewId = new EntityId((Uri)request.Url.WithFragment("view-" + requestId));
locallyControlledNamedGraphSelector.MapEntityGraphForRequest(request, collectionId, graphUri);
locallyControlledNamedGraphSelector.MapEntityGraphForRequest(request, viewId, graphUri);
result = TransformCollection(result, request.Url, totalItems, skip, take);
_entityContextProvider.EntityContext.Disposed += () =>
{
_entityContextProvider.TripleStore.Remove(graphUri);
locallyControlledNamedGraphSelector.UnmapEntityGraphForRequest(request, collectionId);
locallyControlledNamedGraphSelector.UnmapEntityGraphForRequest(request, viewId);
};
}
return result;
}
