/// <summary>
/// Gets the Spring IDbProvider given the ISessionFactory.
/// </summary>
/// <remarks>The matching is performed by comparing the assembly qualified
/// name string of the hibernate Driver.ConnectionType to those in
/// the DbProviderFactory definitions. No connections are created
/// in performing this comparison.</remarks>
/// <param name="sessionFactory">The session factory.</param>
/// <returns>The corresponding IDbProvider, null if no mapping was found.</returns>
/// <exception cref="InvalidOperationException">If DbProviderFactory's ApplicaitonContext is not
/// an instance of IConfigurableApplicaitonContext.</exception>
public static IDbProvider GetDbProvider(ISessionFactory sessionFactory)
{
ISessionFactoryImplementor sfi = sessionFactory as ISessionFactoryImplementor;
if (sfi != null)
{
IConnectionProvider cp = sfi.ConnectionProvider;
if (cp != null)
{
IConfigurableApplicationContext ctx =
DbProviderFactory.ApplicationContext as IConfigurableApplicationContext;
if (ctx == null)
{
throw new InvalidOperationException(
"Implementations of IApplicationContext must also implement IConfigurableApplicationContext");
}
DriverBase db = cp.Driver as DriverBase;
if (db != null)
{
Type hibCommandType = db.CreateCommand().GetType();
var providerNames = ctx.GetObjectNamesForType(typeof(DbProvider), true, false);
string hibCommandAQN = hibCommandType.AssemblyQualifiedName;
string hibCommandAQNWithoutVersion = hibCommandType.FullName + ", " + hibCommandType.Assembly.GetName().Name;
foreach (string providerName in providerNames)
{
IObjectDefinition objectdef = ctx.ObjectFactory.GetObjectDefinition(providerName);
ConstructorArgumentValues ctorArgs = objectdef.ConstructorArgumentValues;
ConstructorArgumentValues.ValueHolder vh = ctorArgs.NamedArgumentValues["dbmetadata"] as ConstructorArgumentValues.ValueHolder;
IObjectDefinition od = ((ObjectDefinitionHolder)vh.Value).ObjectDefinition;
ConstructorArgumentValues dbmdCtorArgs = od.ConstructorArgumentValues;
string commandType = dbmdCtorArgs.GetArgumentValue("commandType", typeof(string)).Value as string;
if (hibCommandAQN.Equals(commandType) || hibCommandAQNWithoutVersion.Equals(commandType))
{
IDbProvider prov = DbProviderFactory.GetDbProvider(providerName);
return(prov);
}
}
}
else
{
log.Info("Could not derive IDbProvider from SessionFactory");
}
}
}
return(null);
}
public void SessionFactoryUtilsWithGetDbProvider()
{
ISessionFactoryImplementor sessionFactory = A.Fake <ISessionFactoryImplementor>();
DriverBase driver = A.Fake <DriverBase>();
A.CallTo(() => driver.CreateCommand()).Returns(new SqlCommand());
IConnectionProvider cp = A.Fake <IConnectionProvider>();
A.CallTo(() => cp.Driver).Returns(driver);
A.CallTo(() => sessionFactory.ConnectionProvider).Returns(cp);
IDbProvider provider = SessionFactoryUtils.GetDbProvider(sessionFactory);
Assert.AreEqual(typeof(SqlCommand), provider.DbMetadata.CommandType);
}
public void SessionFactoryUtilsWithGetDbProvider()
{
MockRepository mockery = new MockRepository();
ISessionFactoryImplementor sessionFactory = mockery.DynamicMock <ISessionFactoryImplementor>();
DriverBase driver = mockery.DynamicMock <DriverBase>();
Expect.Call(driver.CreateCommand()).Repeat.AtLeastOnce().Return(new SqlCommand());
IConnectionProvider cp = mockery.DynamicMock <IConnectionProvider>();
Expect.Call(cp.Driver).Repeat.AtLeastOnce().Return(driver);
Expect.Call(sessionFactory.ConnectionProvider).Repeat.AtLeastOnce().Return(cp);
mockery.ReplayAll();
IDbProvider provider = SessionFactoryUtils.GetDbProvider(sessionFactory);
Assert.AreEqual(typeof(SqlCommand), provider.DbMetadata.CommandType);
mockery.VerifyAll();
}
