/// <summary>
/// Turns the given <paramref name="obj"/> in a cacheable object.
/// </summary>
/// <param name="obj">The <see cref="Record"/> for which to create the cacheable object.</param>
/// <param name="query">The <see cref="Query"/> which resulted in the given <paramref name="obj"/>.</param>
/// <returns>Returns the <see cref="CachedObject{TObject}"/>.</returns>
public static CachedObject<Record> AsCacheableObject(this Record obj, Query query)
{
// validate arguments
if (query == null)
throw new ArgumentNullException("query");
// create a new cacheable object
var cacheable = new CachedObject<Record>(obj);
// if the result is found, cache it by it's id
ChildOfSpecification childOfSpecification;
if (obj != null)
{
// generate an ID for this specific record
var recordIdCacheKey = obj.CalculateIdCacheKey();
// add that cache key as the dependency
cacheable.Add((StringCacheKeyDependency) recordIdCacheKey);
}
else if (query.TryGetSpecification(out childOfSpecification))
{
// cache on the parent tree Id
var parentTreeIdCacheKey = childOfSpecification.ParentPointer.CalculateTreeIdCacheKey();
// add that cache key as the dependency
cacheable.Add((StringCacheKeyDependency) parentTreeIdCacheKey);
}
else
{
// add the repository modified cache key
cacheable.Add(CachingRepositoryDecorator.RepositoryModifiedDependency);
}
// return the cacheable object
return cacheable;
}
/// <summary>
/// Clears the given <paramref name="node"/> from the <paramref name="cachingService"/>.
/// </summary>
/// <param name="node">The <see cref="Node"/> which should be cleared from the cache.</param>
/// <param name="cachingService">The <see cref="ICachingService"/>.</param>
/// <exception cref="ArgumentNullException">Thrown if one of the parameters is null.</exception>
public static void ClearFromCache(this Node node, ICachingService cachingService)
{
// validate arguments
if (node == null)
throw new ArgumentNullException("node");
if (cachingService == null)
throw new ArgumentNullException("cachingService");
// fire the evict by ID
cachingService.Clear(node.CalculateIdCacheKey());
// fire the evict by tree ID
foreach (var treeCacheKey in node.Pointer.CalculateTreeIdCacheKeys())
cachingService.Clear(treeCacheKey);
// fire the repository modified
cachingService.Clear(CachingRepositoryDecorator.RepositoryModifiedDependency.Key);
}
/// <summary>
/// Clears the given <paramref name="record"/> from the <paramref name="cachingService"/>.
/// </summary>
/// <param name="record">The <see cref="Record"/> which should be cleared from the cache.</param>
/// <param name="context">The <see cref="IMansionContext"/>.</param>
/// <param name="cachingService">The <see cref="ICachingService"/>.</param>
/// <exception cref="ArgumentNullException">Thrown if one of the parameters is null.</exception>
public static void ClearFromCache(this Record record, IMansionContext context, ICachingService cachingService)
{
// validate arguments
if (record == null)
throw new ArgumentNullException("record");
if (context == null)
throw new ArgumentNullException("context");
if (cachingService == null)
throw new ArgumentNullException("cachingService");
// fire the evict by ID
cachingService.Clear(record.CalculateIdCacheKey());
// fire the evict by tree ID, if any
NodePointer pointer;
if (record.TryGet(context, "pointer", out pointer))
{
foreach (var treeCacheKey in pointer.CalculateTreeIdCacheKeys())
cachingService.Clear(treeCacheKey);
}
// fire the repository modified
cachingService.Clear(CachingRepositoryDecorator.RepositoryModifiedDependency.Key);
}
