/// <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 as IConnectionProvider;
if (cp != null)
{
IConfigurableApplicationContext ctx =
Spring.Data.Common.DbProviderFactory.ApplicationContext as IConfigurableApplicationContext;
if (ctx == null)
{
throw new InvalidOperationException(
"Implementations of IApplicationContext must also implement IConfigurableApplicationContext");
}
#if NET_1_1
DriverBase db = cp.Driver as DriverBase;
#else
IDriver db = cp.Driver;
#endif
if (db != null)
{
Type hibCommandType = db.CreateCommand().GetType();
string[] providerNames = ctx.GetObjectNamesForType(typeof(DbProvider), true, false);
string hibCommandAQN = hibCommandType.AssemblyQualifiedName;
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))
{
IDbProvider prov = Spring.Data.Common.DbProviderFactory.GetDbProvider(providerName);
return(prov);
}
}
}
else
{
log.Info("Could not derive IDbProvider from SessionFactory");
}
}
}
return(null);
}
public void SetsUpMongoDbFactoryUsingAMongoConnectStringWithoutCredentials()
{
string xml = @"<?xml version='1.0' encoding='UTF-8' ?>
<objects xmlns='http://www.springframework.net' xmlns:mongo='http://www.springframework.net/mongo'>
<mongo:db-factory url='mongodb://localhost/database' />
</objects>";
var factory = new XmlObjectFactory(new StringResource(xml, Encoding.UTF8));
IObjectDefinition definition = factory.GetObjectDefinition("MongoDatabaseFactory");
ConstructorArgumentValues constructorArguments = definition.ConstructorArgumentValues;
Assert.That(constructorArguments.ArgumentCount, Is.EqualTo(1));
var argument = constructorArguments.GetArgumentValue(0, typeof(MongoUrl));
Assert.That(argument, Is.Not.Null);
var dbFactory = factory.GetObject <IMongoDatabaseFactory>("MongoDatabaseFactory");
var db = dbFactory.GetDatabase();
Assert.That(db.Name, Is.EqualTo("database"));
}
/// <summary>
/// Create an array of arguments to invoke a constructor or static factory method,
/// given the resolved constructor arguments values.
/// </summary>
/// <remarks>When return value is null the out parameter UnsatisfiedDependencyExceptionData will contain
/// information for use in throwing a UnsatisfiedDependencyException by the caller. This avoids using
/// exceptions for flow control as in the original implementation.</remarks>
private ArgumentsHolder CreateArgumentArray(string objectName, RootObjectDefinition rod, ConstructorArgumentValues resolvedValues, ObjectWrapper wrapper, Type[] paramTypes, MethodBase methodOrCtorInfo, bool autowiring, out UnsatisfiedDependencyExceptionData unsatisfiedDependencyExceptionData)
{
string methodType = (methodOrCtorInfo is ConstructorInfo) ? "constructor" : "factory method";
unsatisfiedDependencyExceptionData = null;
ArgumentsHolder args = new ArgumentsHolder(paramTypes.Length);
ISet usedValueHolders = new HybridSet();
IList autowiredObjectNames = new LinkedList();
bool resolveNecessary = false;
ParameterInfo[] argTypes = methodOrCtorInfo.GetParameters();
for (int paramIndex = 0; paramIndex < paramTypes.Length; paramIndex++)
{
Type paramType = paramTypes[paramIndex];
string parameterName = argTypes[paramIndex].Name;
// If we couldn't find a direct match and are not supposed to autowire,
// let's try the next generic, untyped argument value as fallback:
// it could match after type conversion (for example, String -> int).
ConstructorArgumentValues.ValueHolder valueHolder = null;
if (resolvedValues.GetNamedArgumentValue(parameterName) != null)
{
valueHolder = resolvedValues.GetArgumentValue(parameterName, paramType, usedValueHolders);
}
else
{
valueHolder = resolvedValues.GetArgumentValue(paramIndex, paramType, usedValueHolders);
}
if (valueHolder == null && !autowiring)
{
valueHolder = resolvedValues.GetGenericArgumentValue(null, usedValueHolders);
}
if (valueHolder != null)
{
// We found a potential match - let's give it a try.
// Do not consider the same value definition multiple times!
usedValueHolders.Add(valueHolder);
args.rawArguments[paramIndex] = valueHolder.Value;
try
{
object originalValue = valueHolder.Value;
object convertedValue = TypeConversionUtils.ConvertValueIfNecessary(paramType, originalValue, null);
args.arguments[paramIndex] = convertedValue;
//?
args.preparedArguments[paramIndex] = convertedValue;
}
catch (TypeMismatchException ex)
{
//To avoid using exceptions for flow control, this is not a cost in Java as stack trace is lazily created.
string errorMessage = String.Format(CultureInfo.InvariantCulture,
"Could not convert {0} argument value [{1}] to required type [{2}] : {3}",
methodType, valueHolder.Value,
paramType, ex.Message);
unsatisfiedDependencyExceptionData = new UnsatisfiedDependencyExceptionData(paramIndex, paramType, errorMessage);
return(null);
}
}
else
{
// No explicit match found: we're either supposed to autowire or
// have to fail creating an argument array for the given constructor.
if (!autowiring)
{
string errorMessage = String.Format(CultureInfo.InvariantCulture,
"Ambiguous {0} argument types - " +
"Did you specify the correct object references as {0} arguments?",
methodType);
unsatisfiedDependencyExceptionData = new UnsatisfiedDependencyExceptionData(paramIndex, paramType, errorMessage);
return(null);
}
try
{
MethodParameter param = MethodParameter.ForMethodOrConstructor(methodOrCtorInfo, paramIndex);
object autowiredArgument = ResolveAutoWiredArgument(param, objectName, autowiredObjectNames);
args.rawArguments[paramIndex] = autowiredArgument;
args.arguments[paramIndex] = autowiredArgument;
args.preparedArguments[paramIndex] = new AutowiredArgumentMarker();
resolveNecessary = true;
}
catch (ObjectsException ex)
{
unsatisfiedDependencyExceptionData = new UnsatisfiedDependencyExceptionData(paramIndex, paramType, ex.Message);
return(null);
}
}
}
foreach (string autowiredObjectName in autowiredObjectNames)
{
if (log.IsDebugEnabled)
{
log.Debug("Autowiring by type from object name '" + objectName +
"' via " + methodType + " to object named '" + autowiredObjectName + "'");
}
}
return(args);
}