/// <summary>
/// Resolves the <see cref="Spring.Objects.Factory.Config.ConstructorArgumentValues"/>
/// of the supplied <paramref name="definition"/>.
/// </summary>
/// <param name="objectName">The name of the object that is being resolved by this factory.</param>
/// <param name="definition">The rod.</param>
/// <param name="wrapper">The wrapper.</param>
/// <param name="cargs">The cargs.</param>
/// <param name="resolvedValues">Where the resolved constructor arguments will be placed.</param>
/// <returns>
/// The minimum number of arguments that any constructor for the supplied
/// <paramref name="definition"/> must have.
/// </returns>
/// <remarks>
/// <p>
/// 'Resolve' can be taken to mean that all of the <paramref name="definition"/>s
/// constructor arguments is resolved into a concrete object that can be plugged
/// into one of the <paramref name="definition"/>s constructors. Runtime object
/// references to other objects in this (or a parent) factory are resolved,
/// type conversion is performed, etc.
/// </p>
/// <p>
/// These resolved values are plugged into the supplied
/// <paramref name="resolvedValues"/> object, because we wouldn't want to touch
/// the <paramref name="definition"/>s constructor arguments in case it (or any of
/// its constructor arguments) is a prototype object definition.
/// </p>
/// <p>
/// This method is also used for handling invocations of static factory methods.
/// </p>
/// </remarks>
private int ResolveConstructorArguments(string objectName, RootObjectDefinition definition, ObjectWrapper wrapper,
ConstructorArgumentValues cargs,
ConstructorArgumentValues resolvedValues)
{
// ObjectDefinitionValueResolver valueResolver = new ObjectDefinitionValueResolver(objectFactory);
int minNrOfArgs = cargs.ArgumentCount;
foreach (DictionaryEntry entry in cargs.IndexedArgumentValues)
{
int index = Convert.ToInt32(entry.Key);
if (index < 0)
{
throw new ObjectCreationException(definition.ResourceDescription, objectName,
"Invalid constructor agrument index: " + index);
}
if (index > minNrOfArgs)
{
minNrOfArgs = index + 1;
}
ConstructorArgumentValues.ValueHolder valueHolder =
(ConstructorArgumentValues.ValueHolder)entry.Value;
string argName = "constructor argument with index " + index;
object resolvedValue =
valueResolver.ResolveValueIfNecessary(objectName, definition, argName, valueHolder.Value);
resolvedValues.AddIndexedArgumentValue(index, resolvedValue,
StringUtils.HasText(valueHolder.Type)
? TypeResolutionUtils.ResolveType(valueHolder.Type).
AssemblyQualifiedName
: null);
}
foreach (ConstructorArgumentValues.ValueHolder valueHolder in definition.ConstructorArgumentValues.GenericArgumentValues)
{
string argName = "constructor argument";
object resolvedValue =
valueResolver.ResolveValueIfNecessary(objectName, definition, argName, valueHolder.Value);
resolvedValues.AddGenericArgumentValue(resolvedValue,
StringUtils.HasText(valueHolder.Type)
? TypeResolutionUtils.ResolveType(valueHolder.Type).
AssemblyQualifiedName
: null);
}
foreach (DictionaryEntry namedArgumentEntry in definition.ConstructorArgumentValues.NamedArgumentValues)
{
string argumentName = (string)namedArgumentEntry.Key;
string syntheticArgumentName = "constructor argument with name " + argumentName;
ConstructorArgumentValues.ValueHolder valueHolder =
(ConstructorArgumentValues.ValueHolder)namedArgumentEntry.Value;
object resolvedValue =
valueResolver.ResolveValueIfNecessary(objectName, definition, syntheticArgumentName, valueHolder.Value);
resolvedValues.AddNamedArgumentValue(argumentName, resolvedValue);
}
return(minNrOfArgs);
}
/// <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);
}
/// <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);
}
/// <summary>
/// Resolves the <see cref="Spring.Objects.Factory.Config.ConstructorArgumentValues"/>
/// of the supplied <paramref name="definition"/>.
/// </summary>
/// <param name="objectName">The name of the object that is being resolved by this factory.</param>
/// <param name="definition">The rod.</param>
/// <param name="wrapper">The wrapper.</param>
/// <param name="cargs">The cargs.</param>
/// <param name="resolvedValues">Where the resolved constructor arguments will be placed.</param>
/// <returns>
/// The minimum number of arguments that any constructor for the supplied
/// <paramref name="definition"/> must have.
/// </returns>
/// <remarks>
/// <p>
/// 'Resolve' can be taken to mean that all of the <paramref name="definition"/>s
/// constructor arguments is resolved into a concrete object that can be plugged
/// into one of the <paramref name="definition"/>s constructors. Runtime object
/// references to other objects in this (or a parent) factory are resolved,
/// type conversion is performed, etc.
/// </p>
/// <p>
/// These resolved values are plugged into the supplied
/// <paramref name="resolvedValues"/> object, because we wouldn't want to touch
/// the <paramref name="definition"/>s constructor arguments in case it (or any of
/// its constructor arguments) is a prototype object definition.
/// </p>
/// <p>
/// This method is also used for handling invocations of static factory methods.
/// </p>
/// </remarks>
private int ResolveConstructorArguments(string objectName, RootObjectDefinition definition, ObjectWrapper wrapper,
ConstructorArgumentValues cargs,
ConstructorArgumentValues resolvedValues)
{
// ObjectDefinitionValueResolver valueResolver = new ObjectDefinitionValueResolver(objectFactory);
int minNrOfArgs = cargs.ArgumentCount;
if (cargs._indexedArgumentValues != null)
{
foreach (var entry in cargs._indexedArgumentValues)
{
int index = entry.Key;
if (index < 0)
{
throw new ObjectCreationException(
definition.ResourceDescription,
objectName,
$"Invalid constructor argument index: {index}");
}
if (index > minNrOfArgs)
{
minNrOfArgs = index + 1;
}
ConstructorArgumentValues.ValueHolder valueHolder = entry.Value;
string argName = "constructor argument with index " + index;
object resolvedValue = valueResolver.ResolveValueIfNecessary(objectName, definition, argName, valueHolder.Value);
resolvedValues.AddIndexedArgumentValue(index, resolvedValue,
StringUtils.HasText(valueHolder.Type)
? TypeResolutionUtils.ResolveType(valueHolder.Type).AssemblyQualifiedName
: null);
}
}
if (definition.ConstructorArgumentValues._genericArgumentValues != null)
{
const string argName = "constructor argument";
for (var i = 0; i < definition.ConstructorArgumentValues._genericArgumentValues.Count; i++)
{
var valueHolder = definition.ConstructorArgumentValues._genericArgumentValues[i];
object resolvedValue = valueResolver.ResolveValueIfNecessary(objectName, definition, argName, valueHolder.Value);
resolvedValues.AddGenericArgumentValue(
resolvedValue,
StringUtils.HasText(valueHolder.Type)
? TypeResolutionUtils.ResolveType(valueHolder.Type).AssemblyQualifiedName
: null);
}
}
if (definition.ConstructorArgumentValues._namedArgumentValues != null)
{
foreach (var entry in definition.ConstructorArgumentValues._namedArgumentValues)
{
string argumentName = entry.Key;
string syntheticArgumentName = "constructor argument with name " + argumentName;
ConstructorArgumentValues.ValueHolder valueHolder = entry.Value;
object resolvedValue = valueResolver.ResolveValueIfNecessary(objectName, definition, syntheticArgumentName, valueHolder.Value);
resolvedValues.AddNamedArgumentValue(argumentName, resolvedValue);
}
}
return(minNrOfArgs);
}
