private IObjectContainer OpenDatabase()
{
if (File.Exists(DatabaseFile))
{
File.Delete(DatabaseFile);
}
IObjectContainer container = Db4oFactory.OpenFile(DatabaseFile);
NativeQueryHandler handler = ((ObjectContainerBase)container).GetNativeQueryHandler();
handler.QueryExecution += OnQueryExecution;
handler.QueryOptimizationFailure += OnQueryOptimizationFailure;
return(container);
}
private void ExpectFailure(string expression, Predicate predicate)
{
_failures.Clear();
Db().Configure().OptimizeNativeQueries(true);
NativeQueryHandler handler = Stream().GetNativeQueryHandler();
handler.QueryOptimizationFailure += new QueryOptimizationFailureHandler(OnOptimizationFailure);
try
{
Db().Query(predicate);
Assert.AreEqual(1, _failures.Count, Join(_failures));
Assert.AreEqual("Unsupported expression: " + expression, _failures[0].Message);
}
finally
{
handler.QueryOptimizationFailure -= new QueryOptimizationFailureHandler(OnOptimizationFailure);
}
}
private void AssertPredicate(int expectedId, string predicateCode, string predicateTypeName)
{
Assembly assembly = EmitAssemblyAndLoad(predicateTypeName + ".dll", predicateCode);
Predicate predicate = (Predicate)System.Activator.CreateInstance(assembly.GetType(predicateTypeName));
Db().Configure().OptimizeNativeQueries(true);
NativeQueryHandler handler = GetNativeQueryHandler(Db());
handler.QueryExecution += OnQueryExecution;
try
{
IObjectSet os = Db().Query(predicate);
Assert.AreEqual(1, os.Count);
Assert.AreEqual(expectedId, ((Author)os.Next()).Id);
}
finally
{
handler.QueryExecution -= OnQueryExecution;
}
}
public NativeQueryHandler GetNativeQueryHandler()
{
lock (_lock)
{
if (null == _nativeQueryHandler)
{
_nativeQueryHandler = new NativeQueryHandler(this);
}
return _nativeQueryHandler;
}
}
