private static void CompleteAudit(DbContext context)
{
var entries = context.ChangeTracker.Entries()
.Where(x => new[] { EntityState.Added, EntityState.Modified, EntityState.Deleted }.Contains(x.State))
.ToArray();
var predictor = new AuditPredictor();
var auditEntriesByTypes = entries
.GroupBy(x => x.Entity.GetType())
.Where(x => x.Key.HasAttribute <EntityAuditAttribute>())
.ToArray();
// Complete EntityAudit
foreach (var entriesByType in auditEntriesByTypes)
{
var attr = entriesByType.Key.GetCustomAttribute <EntityAuditAttribute>();
foreach (var kv in entriesByType.AsKvPairs())
{
predictor.Add(EntityAudit.Parse(kv.Value));
}
}
foreach (var entriesByType in auditEntriesByTypes)
{
var entityType = entriesByType.Key;
var attr = entityType.GetCustomAttribute <EntityAuditAttribute>();
var auditor = Activator.CreateInstance(attr.EntityAuditorType);
auditor.GetReflector().DeclaredMethod(nameof(IEntityAuditor <DbContext, object> .OnAudited)).Call(context, predictor);
}
}
/// <summary>
/// This method should be called before 'base.SaveChanges'.
/// </summary>
/// <param name="context"></param>
/// <param name="acceptAllChangesOnSuccess"></param>
/// <returns></returns>
public static void IntelliTrack(DbContext context, bool acceptAllChangesOnSuccess)
{
EntityEntry[] entries;
IGrouping <Type, EntityEntry>[] auditEntriesByTypes;
void RefreshEntries()
{
entries = context.ChangeTracker.Entries()
.Where(x => new[] { EntityState.Added, EntityState.Modified, EntityState.Deleted }.Contains(x.State))
.ToArray();
auditEntriesByTypes = entries
.GroupBy(x => x.Entity.GetType())
.Where(x => x.Key.HasAttribute <EntityAuditAttribute>())
.ToArray();
}
var auditorCaches = new CacheContainer <Type, Reflector>
{
CacheMethod = auditType => () => Activator.CreateInstance(auditType).GetReflector(),
};
RefreshEntries();
foreach (var entry in entries)
{
// Resolve AutoAttributes
var entity = entry.Entity;
var entityType = entity.GetType();
if (entry.State == EntityState.Added || entry.State == EntityState.Modified)
{
var props = entityType.GetProperties().Where(x => x.CanWrite).ToArray();
ResolveAutoAttributes(entry, props);
}
}
// Resolve BeforeAudit
foreach (var entriesByType in auditEntriesByTypes)
{
var entityType = entriesByType.Key;
var attr = entityType.GetCustomAttribute <EntityAuditAttribute>();
var auditType = typeof(EntityAudit <>).MakeGenericType(entityType);
var audits = Array.CreateInstance(auditType, entriesByType.Count());
foreach (var kv in entriesByType.AsKvPairs())
{
audits.SetValue(EntityAudit.Parse(kv.Value), kv.Key);
}
auditorCaches[attr.EntityAuditorType].Value
.DeclaredMethod(nameof(IEntityAuditor <DbContext, object> .BeforeAudit)).Call(context, audits);
}
// Resolve OnAuditing
RefreshEntries();
foreach (var entriesByType in auditEntriesByTypes)
{
var entityType = entriesByType.Key;
var attr = entityType.GetCustomAttribute <EntityAuditAttribute>();
var auditType = typeof(EntityAudit <>).MakeGenericType(entityType);
var audits = Array.CreateInstance(auditType, entriesByType.Count());
foreach (var kv in entriesByType.AsKvPairs())
{
audits.SetValue(EntityAudit.Parse(kv.Value), kv.Key);
}
auditorCaches[attr.EntityAuditorType].Value
.DeclaredMethod(nameof(IEntityAuditor <DbContext, object> .OnAuditing)).Call(context, audits);
}
// Resolve OnAudited
CompleteAudit(context);
}
