private static object GenerateForEmbeddedRule(EntityRule rule, IActionConfiguration actionConfiguration,
Dictionary<string, List<string>> routeRelations, object originalObject)
{
var actionExecutedContext = ActionCallContext.Get<HttpActionExecutedContext>();
var entityActionConfiguration = HypermediaControllerConfiguration.Instance.GetcontrollerActionConfiguration(rule.ControllerType, rule.ControllerAction, actionExecutedContext.Request.Headers.Accept);
if (entityActionConfiguration == null)
return null;
var referencedObject = rule.GetReferencedObjectInstance(originalObject);
if (referencedObject == null)
return null;
var transformed = ActionResponseTransformer.TransformPayload(entityActionConfiguration, referencedObject);
if (transformed == null)
return null;
if (transformed is IEnumerable)
throw new Exception(string.Format("Unable to generate enumerable entity object from controller {0} action {1}. Consider using outer object.", actionConfiguration.ControllerType.FullName, actionConfiguration.ActionMethodInfo));
AssignRelName(transformed, rule.Rel);
return transformed;
}
public void AddNewLinkedEntityMapping(Expression embeddedEntityExpression, Expression actionSelector, string[] rel)
{
var handlingSelector = actionSelector as MethodCallExpression;
var rule = new EntityRule(embeddedEntityExpression, handlingSelector, EntityRule.EmbeddingRule.Linked, rel);
ActionConfiguration.AddEntityRule(rule);
}
private static object GenerateForLinkedRule(EntityRule rule,
IActionConfiguration actionConfiguration,
Dictionary<string, List<string>> routeRelations, object originalObject)
{
var actionExecutedContext = ActionCallContext.Get<HttpActionExecutedContext>();
var entityActionConfiguration = HypermediaControllerConfiguration.Instance.GetcontrollerActionConfiguration(rule.ControllerType, rule.ControllerAction, actionExecutedContext.Request.Headers.Accept);
if (entityActionConfiguration == null)
return null;
var referencedObject = rule.GetReferencedObjectInstance(originalObject);
if (referencedObject == null)
return null;
var selfRule = entityActionConfiguration.MappingRules.FirstOrDefault(r => r.Names.Contains("self"));
if (selfRule == null)
throw new Exception(string.Format("Unable to generate link to entity object from controller {0} action {1}. Can't find self rel.", actionConfiguration.ControllerType.FullName, actionConfiguration.ActionMethodInfo));
var selfApi = selfRule.ApiDescriptions.OrderBy(d => d.RelativePath.Length).FirstOrDefault();
if (selfApi == null)
throw new Exception(string.Format("Unable to generate link to entity object from controller {0} action {1}. Can't find self API.", actionConfiguration.ControllerType.FullName, actionConfiguration.ActionMethodInfo));
var routeNameSubstitution = new DefaultRouteValueSubstitution();
var absolutePath =
LinkHelper.MakeAbsolutePath(routeNameSubstitution.Substitute(selfApi.RelativePath, selfRule,
referencedObject));
return new LinkedEntity()
{
Rels = rule.Rel,
ClassName = entityActionConfiguration.Class,
Href = absolutePath
};
}
public void AddEntityRule(EntityRule entityRule)
{
_entityRules.Add(entityRule);
}
private static object GenerateForRule(EntityRule rule, IActionConfiguration actionConfiguration,
Dictionary<string, List<string>> routeRelations, object originalObject)
{
if (rule.EntityEmbeddingRule == EntityRule.EmbeddingRule.Embedded)
return GenerateForEmbeddedRule(rule, actionConfiguration, routeRelations, originalObject);
return GenerateForLinkedRule(rule, actionConfiguration, routeRelations, originalObject);
}
public void AddEntityRule(EntityRule entityRule)
{
_entityRules.Add(entityRule);
}