// using Z.EntityFramework.Plus; // Don't forget to include this.

// DELETE all users which has been inactive for 2 years
ctx.Users.Where(x => x.LastLoginDate < DateTime.Now.AddYears(-2))
         .Delete();

// DELETE using a BatchSize
ctx.Users.Where(x => x.LastLoginDate < DateTime.Now.AddYears(-2))
         .Delete(x => x.BatchSize = 1000);

// using Z.EntityFramework.Plus; // Don't forget to include this.

// UPDATE all users which has been inactive for 2 years
ctx.Users.Where(x => x.LastLoginDate < DateTime.Now.AddYears(-2))
         .Update(x => new User() { IsSoftDeleted = 1 });

// The query is cached using default QueryCacheManager options
var countries = ctx.Countries.Where(x => x.IsActive).FromCache();

// (EF5 | EF6) The query is cached for 2 hours
var states = ctx.States.Where(x => x.IsActive).FromCache(DateTime.Now.AddHours(2));

// (EF7) The query is cached for 2 hours without any activity
var options = new MemoryCacheEntryOptions() { SlidingExpiration = TimeSpan.FromHours(2)};
var states = ctx.States.Where(x => x.IsActive).FromCache(options);

var states = db.States.Where(x => x.IsActive).FromCache("countries", "states");
var stateCount = db.States.Where(x => x.IsActive).DeferredCount().FromCache("countries", "states");

// Expire all cache entry using the "countries" tag
QueryCacheManager.ExpireTag("countries");

// Oops! The query is already executed, we cannot use Query Cache or Query Future features
var count = ctx.Customers.Count();

// Query Cache
ctx.Customers.DeferredCount().FromCache();

// Query Future
ctx.Customers.DeferredCount().FutureValue();

// CREATE global filter
QueryFilterManager.Filter<Customer>(x => x.Where(c => c.IsActive));

var ctx = new EntityContext();

// TIP: Add this line in EntitiesContext constructor instead
QueryFilterManager.InitilizeGlobalFilter(ctx);

// SELECT * FROM Customer WHERE IsActive = true
var customer = ctx.Customers.ToList();

var ctx = new EntityContext();

// CREATE filter
ctx.Filter<Customer>(x => x.Where(c => c.IsActive));

// SELECT * FROM Customer WHERE IsActive = true
var customer = ctx.Customers.ToList();

var ctx = new EntityContext();

// CREATE filter disabled
ctx.Filter<Customer>(CustomEnum.EnumValue, x => x.Where(c => c.IsActive), false);

// SELECT * FROM Customer WHERE IsActive = true
var customer = ctx.Customers.Filter(CustomEnum.EnumValue).ToList();

// GET the states & countries list
var futureCountries = db.Countries.Where(x => x.IsActive).Future();
var futureStates = db.States.Where(x => x.IsActive).Future();

// TRIGGER all pending queries (futureCountries & futureStates)
var countries = futureCountries.ToList();

// GET the first active customer and the number of avtive customers
var futureFirstCustomer = db.Customers.Where(x => x.IsActive).DeferredFirstOrDefault().FutureValue();
var futureCustomerCount = db.Customers.Where(x => x.IsActive).DeferredCount().FutureValue();

// TRIGGER all pending queries (futureFirstCustomer & futureCustomerCount)
Customer firstCustomer = futureFirstCustomer.Value;

var ctx = new EntityContext();

// Load only active comments
var posts = ctx.Post.IncludeFilter(x => x.Comments.Where(x => x.IsActive));

var ctx = new EntityContext();

// Load only active comments using an optimized include
var posts = ctx.Post.IncludeOptimized(x => x.Comments.Where(x => x.IsActive));

// using Z.EntityFramework.Plus; // Don't forget to include this.

var ctx = new EntityContext();
// ... ctx changes ...

var audit = new Audit();
audit.CreatedBy = "ZZZ Projects"; // Optional
ctx.SaveChanges(audit);

// Access to all auditing information
var entries = audit.Entries;
foreach(var entry in entries)
{
    foreach(var property in entry.Properties)
    {
    }
}

AuditManager.DefaultConfiguration.AutoSavePreAction = (context, audit) =>
    (context as EntityContext).AuditEntries.AddRange(audit.Entries);