public void Sample()
{
using (var db = new TestDataConnection())
{
var ms = new MappingSchema();
var b = ms.GetFluentMappingBuilder();
var dc = new DataContextDecorator(db, ms);
b.Entity <Entity>()
.Property(_ => _.Id).HasColumnName("EntityId")
.Property(_ => _.Name).HasColumnName("EntityName");
var q1 = db.GetTable <Entity>().Select(_ => _).ToString();
var q2 = dc.GetTable <Entity>().Select(_ => _).ToString();
Assert.AreNotEqual(q1, q2);
Assert.That(q2.Contains("EntityId"));
Assert.That(q2.Contains("EntityName"));
}
}
public virtual IDataContext Register(UnitOfWorkConfig config)
{
DataSource dataSource;
if (!dataSourcesProvider().TryGetValue(config.SourceName, out dataSource))
{
if (config.SourceName == string.Empty)
throw new Exception("Default data source is not registered.");
throw new Exception(string.Format("Data source with name '{0}' is not registered.", config.SourceName));
}
config = new UnitOfWorkConfig(config.SourceName,
config.IsolationLevel == IsolationLevel.Unspecified
? dataSource.DefaultIsolationLevel
: config.IsolationLevel, config.Require);
if (config.Require == Require.New)
{
return
new DataContextDecorator(
new DataContext(config,
new Lazy<IOrmSession>(() => dataSource.BuildSession(config.IsolationLevel),
false), terminationPolicy), contexts);
}
// ReSharper disable ImplicitlyCapturedClosure
var context =
(from ctx in contexts where ctx.WrappedContext.Configuration.SourceName == config.SourceName select ctx)
.LastOrDefault();
// ReSharper restore ImplicitlyCapturedClosure
if (context != null)
{
if (!context.WrappedContext.Configuration.IsolationLevel.IsCompatible(config.IsolationLevel))
{
throw new Exception(string.Format("Isolation level '{0}' is not compatible with '{1}'.",
context.WrappedContext.Configuration.IsolationLevel,
config.IsolationLevel));
}
return new DataContext.Subordinate(context.WrappedContext);
}
if (config.Require == Require.Existing)
throw new Exception(
"Unit of work requires existing unit of work at the top level, but nothing has been found.");
context =
new DataContextDecorator(
new DataContext(config,
new Lazy<IOrmSession>(() => dataSource.BuildSession(config.IsolationLevel), false),
terminationPolicy), contexts);
return context;
}
