private QueryNode BindNonRootSegment(SegmentQueryToken segmentToken)
{
Debug.Assert(segmentToken != null, "segmentToken != null");
Debug.Assert(segmentToken.Parent != null, "Only root segments should be allowed here.");
Debug.Assert(!string.IsNullOrEmpty(segmentToken.Name), "!string.IsNullOrEmpty(segmentToken.Name)");
//// This is a metadata-only version of the RequestUriProcessor.CreateFirstSegment.
if (segmentToken.Name == UriQueryConstants.MetadataSegment || segmentToken.Name == UriQueryConstants.BatchSegment)
{
// TODO: $metadata segment parsing - no key values are allowed.
// TODO: $batch segment parsing - no key values are allowed.
throw new NotImplementedException();
}
// TODO: WCF DS checks for $count here first and fails. But not for the other $ segments.
// which means other $segments get to SO resolution. On the other hand the WCF DS would eventually fail if an SO started with $.
// Look for a service operation
ServiceOperationWrapper serviceOperation = this.metadataProvider.TryResolveServiceOperation(segmentToken.Name);
if (serviceOperation != null)
{
return this.BindServiceOperation(segmentToken, serviceOperation);
}
// TODO: Content-ID reference resolution. Do we actually do anything here or do we perform this through extending the metadata binder?
// Look for an entity set.
ResourceSetWrapper resourceSet = this.metadataProvider.TryResolveResourceSet(segmentToken.Name);
if (resourceSet == null)
{
throw new ODataException(Strings.MetadataBinder_RootSegmentResourceNotFound(segmentToken.Name));
}
ResourceSetQueryNode resourceSetQueryNode = new ResourceSetQueryNode()
{
ResourceSet = resourceSet.ResourceSet
};
if (segmentToken.NamedValues != null)
{
return this.BindKeyValues(resourceSetQueryNode, segmentToken.NamedValues);
}
else
{
return resourceSetQueryNode;
}
}
/// <summary> /// Translates a resource set node. /// </summary> /// <param name="resourceSetNode">The resource set query node to translate.</param> /// <returns>Expression which evaluates to IQueryable<T> where T is the InstanceType of the ResourceType of the resource set.</returns> protected abstract Expression TranslateResourceSet(ResourceSetQueryNode resourceSetNode);