private void MarkDeleted <T>(ResourceType resourceType, int entityId) where T : ContentBase
{
var collection = _db.GetCollection <T>(resourceType.Name);
var entity = collection.AsQueryable().First(x => x.Id == entityId);
entity.Status = ContentStatus.Deleted;
collection.ReplaceOne(x => x.Id == entityId, entity);
}
/// <summary>
/// Gets a new, never-used-before ID for a new entity of the specified type.
/// </summary>
public int NextId(ResourceType entityType)
{
lock (_lockObject)
{
var info = GetOrCreateEntityTypeInfo(entityType);
return(++info.MaximumId);
}
}
/// <summary>
/// Determines whether an entity with the specified type and ID exists.
/// </summary>
public bool Exists(ResourceType entityType, int id)
{
lock (_lockObject)
{
var info = GetOrCreateEntityTypeInfo(entityType);
return(info.Entities.TryGetValue(id, out var entity) && entity.Status != ContentStatus.Deleted);
}
}
private EntityTypeInfo GetOrCreateEntityTypeInfo(ResourceType entityType)
{
if (_types.TryGetValue(entityType, out var info))
{
return(info);
}
return(_types[entityType] = new EntityTypeInfo());
}
/// <summary>
/// Get UserId of an entity owner
/// </summary>
public string Owner(ResourceType entityType, int id)
{
var info = GetOrCreateEntityTypeInfo(entityType);
if (info.Entities.TryGetValue(id, out var entity))
{
return(entity.UserId);
}
return(null);
}
/// <summary>
/// Gets the current status of an entity given its type and ID.
/// </summary>
public ContentStatus?Status(ResourceType entityType, int id)
{
lock (_lockObject)
{
var info = GetOrCreateEntityTypeInfo(entityType);
if (info.Entities.TryGetValue(id, out var entity))
{
return(entity.Status);
}
return(null);
}
}
/// <summary>
/// Gets the IDs of all entities of the given type and status.
/// </summary>
public IReadOnlyCollection <int> AllIds(ResourceType entityType, ContentStatus status, IIdentity user)
{
lock (_lockObject)
{
bool isAllowedGetAll = UserPermissions.IsAllowedToGetAll(user, status);
string userId = user.GetUserIdentity();
var info = GetOrCreateEntityTypeInfo(entityType);
return(info.Entities
.AsQueryable()
.FilterIf(!isAllowedGetAll, x =>
((status == ContentStatus.All) && (x.Value.Status == ContentStatus.Published)) || (x.Value.UserId == userId))
.FilterIf(status == ContentStatus.All, x => x.Value.Status != ContentStatus.Deleted)
.Where(x => status == ContentStatus.All || x.Value.Status == status)
.Select(x => x.Key)
.ToList());
}
}
/// <summary> /// Returns a timestamp indicating the last time the entity with the specified type and ID or /// any directly or indirectly referenced entity was modified (i.e. created or updated). /// </summary> public DateTimeOffset LastModificationCascading(ResourceType type, int id) =>
/// <summary>
/// Returns the IDs of the entities that reference the entity with the specified type and ID.
/// </summary>
public IReadOnlyCollection <EntityId> ReferencesTo(ResourceType type, int id)
{
var key = new EntityId(type, id);
return(_referencesTo.TryGetValue(key, out var set) ? set.ToArray() : Array.Empty <EntityId>());
}
/// <summary>
/// Checks whether an entity is referenced by any other entities.
/// </summary>
/// <returns>True if there are references to the entity</returns>
public bool IsUsed(ResourceType type, int id)
{
var key = new EntityId(type, id);
return(_referencesTo.TryGetValue(key, out var set) && set.Count > 0);
}
