public void SubsequentCreatesInSessionFactoryDoNotIncrementGeneratorUntilBlockSizeReached()
{
ResetDatabase();
var sessionFactory = new ConfigurationFactory().CreateConfiguration().BuildSessionFactory();
const long blockSize = 2;
// First entity save
var person = new PersonWithBlockSizeTwo { FirstName = "Tim", LastName = "Howard" };
SavePersonInNewSession(sessionFactory, person);
// After first insert the generator should be incremented
Assert.Equal(1, person.Id);
Assert.Equal(1 + blockSize, GetCurrentGeneratorValue(sessionFactory));
// Second entity save
person = new PersonWithBlockSizeTwo { FirstName = "Lionel", LastName = "Messi" };
SavePersonInNewSession(sessionFactory, person);
// After second insert the generator should not be incremented
Assert.Equal(2, person.Id);
Assert.Equal(1 + blockSize, GetCurrentGeneratorValue(sessionFactory));
// Third entity save
person = new PersonWithBlockSizeTwo { FirstName = "Wayne", LastName = "Rooney" };
SavePersonInNewSession(sessionFactory, person);
// After third insert the generator should be incremented again
Assert.Equal(3, person.Id);
Assert.Equal(1 + (blockSize * 2), GetCurrentGeneratorValue(sessionFactory));
}
public void InterleavedEntitiesWithDifferentBlockSizes()
{
ResetDatabase();
var sessionFactory = new ConfigurationFactory().CreateConfiguration().BuildSessionFactory();
const long smallBlockSize = 2;
const long defaultBlockSize = Int16.MaxValue;
long expectedDatabaseGeneratorValue = 1;
Assert.Equal(expectedDatabaseGeneratorValue, GetCurrentGeneratorValue(sessionFactory));
// ** First save of entity with small block size
var personWithSmallBlockSize = new PersonWithBlockSizeTwo { FirstName = "Tim", LastName = "Howard" };
SavePersonInNewSession(sessionFactory, personWithSmallBlockSize);
// Generator should be incremented by the small block size
long expectedSmallBlockSizeGeneratorValue = expectedDatabaseGeneratorValue;
expectedDatabaseGeneratorValue += smallBlockSize;
Assert.Equal(expectedSmallBlockSizeGeneratorValue, personWithSmallBlockSize.Id);
Assert.Equal(expectedDatabaseGeneratorValue, GetCurrentGeneratorValue(sessionFactory));
// ** First save of entity with default block size
var personWithDefaultBlockSize = new PersonWithBlockSizeDefault { FirstName = "Tim", LastName = "Howard" };
SavePersonInNewSession(sessionFactory, personWithDefaultBlockSize);
// This entity should be allocated a default block
// Database Generator should be incremented by default block size
long expectedDefaultBlockSizeGeneratorValue = expectedDatabaseGeneratorValue;
expectedDatabaseGeneratorValue += defaultBlockSize;
Assert.Equal(expectedDefaultBlockSizeGeneratorValue, personWithDefaultBlockSize.Id);
Assert.Equal(expectedDatabaseGeneratorValue, GetCurrentGeneratorValue(sessionFactory));
// ** Second save of entity with small block size
personWithSmallBlockSize = new PersonWithBlockSizeTwo { FirstName = "Lionel", LastName = "Messi" };
SavePersonInNewSession(sessionFactory, personWithSmallBlockSize);
// Database Generator should not be incremented
expectedSmallBlockSizeGeneratorValue++;
Assert.Equal(expectedSmallBlockSizeGeneratorValue, personWithSmallBlockSize.Id);
Assert.Equal(expectedDatabaseGeneratorValue, GetCurrentGeneratorValue(sessionFactory));
// ** Second save of entity with default block size
personWithDefaultBlockSize = new PersonWithBlockSizeDefault { FirstName = "Tim", LastName = "Howard" };
SavePersonInNewSession(sessionFactory, personWithDefaultBlockSize);
// Database Generator should not be incremented
expectedDefaultBlockSizeGeneratorValue++;
Assert.Equal(expectedDefaultBlockSizeGeneratorValue, personWithDefaultBlockSize.Id);
Assert.Equal(expectedDatabaseGeneratorValue, GetCurrentGeneratorValue(sessionFactory));
// Third save of entity with small block size
personWithSmallBlockSize = new PersonWithBlockSizeTwo { FirstName = "Wayne", LastName = "Rooney" };
SavePersonInNewSession(sessionFactory, personWithSmallBlockSize);
// Database Generator should be incremented again
expectedSmallBlockSizeGeneratorValue = expectedDatabaseGeneratorValue;
expectedDatabaseGeneratorValue += smallBlockSize;
Assert.Equal(expectedSmallBlockSizeGeneratorValue, personWithSmallBlockSize.Id);
Assert.Equal(expectedDatabaseGeneratorValue, GetCurrentGeneratorValue(sessionFactory));
}
public void GeneratorIsInitializedToZeroWithBlockSizeTwo()
{
ResetDatabase();
// Note: zero should be skipped as an ID to conform to expected NHibernate behavior
var sessionFactory = new ConfigurationFactory().CreateConfiguration().BuildSessionFactory();
const long smallBlockSize = 2;
// Set generator to zero
using (var session = sessionFactory.OpenSession())
using (var tx = session.BeginTransaction())
{
var sqlQuery = session.CreateSQLQuery("UPDATE hibernate_unique_key SET next_id = 0");
sqlQuery.ExecuteUpdate();
tx.Commit();
}
Assert.Equal(0, GetCurrentGeneratorValue(sessionFactory));
// ** First save of entity should get ID 1 (generator incremented)
var personWithSmallBlockSize = new PersonWithBlockSizeTwo { FirstName = "Tim", LastName = "Howard" };
SavePersonInNewSession(sessionFactory, personWithSmallBlockSize);
Assert.Equal(1, personWithSmallBlockSize.Id);
Assert.Equal(smallBlockSize, GetCurrentGeneratorValue(sessionFactory));
// ** Second save of entity should get ID 2 (generator incremented)
personWithSmallBlockSize = new PersonWithBlockSizeTwo { FirstName = "Tim", LastName = "Howard" };
SavePersonInNewSession(sessionFactory, personWithSmallBlockSize);
Assert.Equal(2, personWithSmallBlockSize.Id);
Assert.Equal(smallBlockSize * 2, GetCurrentGeneratorValue(sessionFactory));
// ** Third save of entity should get ID 3 (generator not incremented)
personWithSmallBlockSize = new PersonWithBlockSizeTwo { FirstName = "Tim", LastName = "Howard" };
SavePersonInNewSession(sessionFactory, personWithSmallBlockSize);
Assert.Equal(3, personWithSmallBlockSize.Id);
Assert.Equal(smallBlockSize * 2, GetCurrentGeneratorValue(sessionFactory));
// ** Fourth save of entity should get ID 4 (generator incremented)
personWithSmallBlockSize = new PersonWithBlockSizeTwo { FirstName = "Tim", LastName = "Howard" };
SavePersonInNewSession(sessionFactory, personWithSmallBlockSize);
Assert.Equal(4, personWithSmallBlockSize.Id);
Assert.Equal(smallBlockSize * 3, GetCurrentGeneratorValue(sessionFactory));
}
