protected DbDataProvider(string connectionString, string providerName)
{
if (String.IsNullOrEmpty(connectionString))
{
throw new ArgumentNullException("connectionString");
}
ConnectionString = connectionString;
if (String.IsNullOrEmpty(providerName))
{
throw new ArgumentNullException("providerName");
}
DbDataProviderName = providerName;
// TODO: Schema is specific to SQL Server?
Schema = new DatabaseSchema();
InterceptionStrategy = new DynamicProxyInterceptionStrategy(this);
}
private static void EnsureControlCollectionIntercepted(IApplicationContext defaultApplicationContext, Control control)
{
// check the collection
ControlAccessor ctlAccessor = new ControlAccessor(control);
ControlCollection childControls = ctlAccessor.Controls;
if (IsDependencyInjectionAware(defaultApplicationContext, childControls))
{
return; // nothing more to do
}
// check, if the collection's owner has already been intercepted
ControlCollectionAccessor ctlColAccessor = new ControlCollectionAccessor(childControls);
if (IsDependencyInjectionAware(defaultApplicationContext, ctlColAccessor.Owner))
{
return; // nothing more to do
}
// lookup strategy in cache
IInterceptionStrategy strategy = null;
lock (s_cachedInterceptionStrategies)
{
strategy = (IInterceptionStrategy)s_cachedInterceptionStrategies[control.GetType()];
}
if (strategy != null)
{
strategy.Intercept(defaultApplicationContext, ctlAccessor, ctlColAccessor);
}
else
{
// nothing in cache - try well-known strategies for owner resp. child collection type
strategy = (IInterceptionStrategy)s_knownInterceptionStrategies[control.GetType()];
if (strategy == null)
{
strategy = (IInterceptionStrategy)s_knownInterceptionStrategies[childControls.GetType()];
}
// try intercept using well-known strategy
if (strategy != null)
{
bool bOk = strategy.Intercept(defaultApplicationContext, ctlAccessor, ctlColAccessor);
if (!bOk)
{
strategy = null;
}
}
// not well-known or didn't work out
if (strategy == null)
{
// probe for a strategy
bool bOk = false;
for (int i = 0; i < s_availableInterceptionStrategies.Length; i++)
{
strategy = s_availableInterceptionStrategies[i];
bOk = strategy.Intercept(defaultApplicationContext, ctlAccessor, ctlColAccessor);
if (bOk)
{
break;
}
}
if (!bOk)
{
LogManager.GetLogger(typeof(ControlInterceptor)).Warn(string.Format("dependency injection not supported for control type {0}", ctlAccessor.GetTarget().GetType()));
strategy = s_noopInterceptionStrategy;
}
}
lock (s_cachedInterceptionStrategies)
{
s_cachedInterceptionStrategies[control.GetType()] = strategy;
}
}
}
