net.sf.cglib.proxy.Callback Java Examples

@Override
public Object getProxy(ClassLoader classLoader) {
    Enhancer enhancer = new Enhancer();
    enhancer.setClassLoader(classLoader);
    enhancer.setCallbackType(MethodInterceptor.class);

    Class<?> targetClass = support.getBeanClass();
    enhancer.setSuperclass(targetClass);
    enhancer.setInterfaces(new Class[]{FestivalProxy.class, TargetClassAware.class});
    Class<?> proxyClass = enhancer.createClass();

    Objenesis objenesis = new ObjenesisStd();
    ObjectInstantiator<?> instantiator = objenesis.getInstantiatorOf(proxyClass);
    Object proxyInstance = instantiator.newInstance();

    ((Factory) proxyInstance).setCallbacks(new Callback[]{new CglibMethodInterceptor(support)});

    return proxyInstance;
}
 

public Remote createServiceEndpoint() throws ServiceException {
        //TODO figure out why this can't be called in readResolve!
//        synchronized (this) {
//            if (!initialized) {
//                initialize();
//                initialized = true;
//            }
//        }
        Service service = ((ServiceImpl) serviceImpl).getService();
        GenericServiceEndpoint serviceEndpoint = new GenericServiceEndpoint(portQName, service, location);
        Callback callback = new ServiceEndpointMethodInterceptor(serviceEndpoint, sortedOperationInfos, credentialsName);
        Callback[] callbacks = new Callback[]{NoOp.INSTANCE, callback};
        Enhancer.registerCallbacks(serviceEndpointClass, callbacks);
        try {
            return (Remote) constructor.newInstance(new Object[]{serviceEndpoint});
        } catch (InvocationTargetException e) {
            throw (ServiceException) new ServiceException("Could not construct service instance", e.getTargetException()).initCause(e);
        }
    }
 

@SuppressWarnings("unchecked")
@DB()
protected T toEntityBean(final ResultSet result, final boolean cache) throws SQLException {
    final T entity = (T)_factory.newInstance(new Callback[] {NoOp.INSTANCE, new UpdateBuilder(this)});

    toEntityBean(result, entity);

    if (cache && _cache != null) {
        try {
            _cache.put(new Element(_idField.get(entity), entity));
        } catch (final Exception e) {
            s_logger.debug("Can't put it in the cache", e);
        }
    }

    return entity;
}
 

@SuppressWarnings("unchecked")
	public <T> T createProxy(T targetObject, Callback callback) {
		if (targetObject == null) {
			throw new IllegalArgumentException("targetObject must not be null");
		}
		if (callback == null) {
			throw new IllegalArgumentException("callback must not be null");
		}
		Class<?> targetType = targetObject.getClass();
		return (T) Enhancer.create(targetType, callback);
//		Class<?> superclass = targetType.getSuperclass();
//		List<Class<?>> allInterfaces = ClassUtils.getAllInterfaces(targetType);
//		Class<?>[] allInterfacesAsArray = (Class<?>[]) allInterfaces.toArray(new Class<?>[allInterfaces.size()]);
//		Enhancer enhancer = new Enhancer();
//		enhancer.setSuperclass(superclass);
//		enhancer.setInterfaces(allInterfacesAsArray);
//		enhancer.setCallback(callback);
//		enhancer.setUseFactory(true);
//
//		Object proxyObject = enhancer.create();
//		return (T) proxyObject;
	}
 

@DB()
protected T toEntityBean(final ResultSet result, final boolean cache) throws SQLException {
    final T entity = (T) _factory.newInstance(new Callback[]{NoOp.INSTANCE, new UpdateBuilder(this)});

    toEntityBean(result, entity);

    if (cache && _cache != null) {
        try {
            _cache.put(new Element(_idField.get(entity), entity));
        } catch (final Exception e) {
            s_logger.debug("Can't put it in the cache", e);
        }
    }

    return entity;
}
 

private Callback createReverseEngineeredCallbackOfProperType(Callback callback, int index,
    Map callbackIndexMap) {
    Class iface = null;
    Class[] interfaces = callback.getClass().getInterfaces();
    for (int i = 0; i < interfaces.length; i++ ) {
        if (Callback.class.isAssignableFrom(interfaces[i])) {
            iface = interfaces[i];
            if (iface == Callback.class) {
                ConversionException exception = new ConversionException(
                    "Cannot handle CGLIB callback");
                exception.add("CGLIB-callback-type", callback.getClass().getName());
                throw exception;
            }
            interfaces = iface.getInterfaces();
            if (Arrays.asList(interfaces).contains(Callback.class)) {
                break;
            }
            i = -1;
        }
    }
    return (Callback)Proxy.newProxyInstance(
        iface.getClassLoader(), new Class[]{iface},
        new ReverseEngineeringInvocationHandler(index, callbackIndexMap));
}
 

public ConstructionProxy<T> create() throws ErrorsException {
  if (interceptors.isEmpty()) {
    return new DefaultConstructionProxyFactory<T>(injectionPoint).create();
  }

  @SuppressWarnings("unchecked")
  Class<? extends Callback>[] callbackTypes = new Class[callbacks.length];
  for (int i = 0; i < callbacks.length; i++) {
    if (callbacks[i] == net.sf.cglib.proxy.NoOp.INSTANCE) {
      callbackTypes[i] = net.sf.cglib.proxy.NoOp.class;
    } else {
      callbackTypes[i] = net.sf.cglib.proxy.MethodInterceptor.class;
    }
  }

  // Create the proxied class. We're careful to ensure that all enhancer state is not-specific
  // to this injector. Otherwise, the proxies for each injector will waste PermGen memory
  try {
  Enhancer enhancer = BytecodeGen.newEnhancer(declaringClass, visibility);
  enhancer.setCallbackFilter(new IndicesCallbackFilter(methods));
  enhancer.setCallbackTypes(callbackTypes);
  return new ProxyConstructor<T>(enhancer, injectionPoint, callbacks, interceptors);
  } catch (Throwable e) {
    throw new Errors().errorEnhancingClass(declaringClass, e).toException();
  }
}
 

public T getProxy() {
    Class proxyClass = getProxy(delegateClass.getName());
    if (proxyClass == null) {
        Enhancer enhancer = new Enhancer();
        if (delegateClass.isInterface()) { // 判断是否为接口，优先进行接口代理可以解决service为final
            enhancer.setInterfaces(new Class[] { delegateClass });
        } else {
            enhancer.setSuperclass(delegateClass);
        }
        enhancer.setCallbackTypes(new Class[] { ProxyDirect.class, ProxyInterceptor.class });
        enhancer.setCallbackFilter(new ProxyRoute());
        proxyClass = enhancer.createClass();
        // 注册proxyClass
        registerProxy(delegateClass.getName(), proxyClass);
    }

    Enhancer.registerCallbacks(proxyClass, new Callback[] { new ProxyDirect(), new ProxyInterceptor() });
    try {
        Object[] _constructorArgs = new Object[0];
        Constructor _constructor = proxyClass.getConstructor(new Class[] {});// 先尝试默认的空构造函数
        return (T) _constructor.newInstance(_constructorArgs);
    } catch (Throwable e) {
        throw new OptimizerException(e);
    } finally {
        // clear thread callbacks to allow them to be gc'd
        Enhancer.registerStaticCallbacks(proxyClass, null);
    }
}
 

@SuppressWarnings("unchecked")
public static <T> T create(Class<T> targetClass) throws InstantiationException, IllegalAccessException {
    Enhancer enhancer = new Enhancer();
    enhancer.setSuperclass(targetClass);
    enhancer.setClassLoader(targetClass.getClassLoader());
    enhancer.setCallbackFilter(new TransactionalCallbackFilter());
    Callback[] callbacks = new Callback[] {new DasTransactionInterceptor(), NoOp.INSTANCE};
    enhancer.setCallbacks(callbacks);
    enhancer.setInterfaces(new Class[] {TransactionalIntercepted.class});
    return (T) enhancer.create();
}
 

public ComponentInstantiationPostProcessor() {
    _callbacks = new Callback[2];
    _callbacks[0] = NoOp.INSTANCE;
    _callbacks[1] = new InterceptorDispatcher();

    _callbackFilter = new InterceptorFilter();
}
 

private void readCallback(HierarchicalStreamReader reader, UnmarshallingContext context,
    List callbacksToEnhance, List callbacks) {
    Callback callback = (Callback)context.convertAnother(null, mapper.realClass(reader
        .getNodeName()));
    callbacks.add(callback);
    if (callback == null) {
        callbacksToEnhance.add(NoOp.INSTANCE);
    } else {
        callbacksToEnhance.add(callback);
    }
}
 

protected <T extends InteractionAwareFixture> T createFirst(Callback callback, Class<T> clazz, Class<?>[] constructorTypes, Object[] constructorArgs) {
    Enhancer enhancer = new Enhancer();
    enhancer.setSuperclass(clazz);
    enhancer.setCallback(callback);

    T result;
    if (constructorArgs != null && constructorArgs.length > 0) {
        result = (T) enhancer.create(constructorTypes, constructorArgs);
    } else {
        result = (T) enhancer.create();
    }
    return result;
}
 

protected <T extends InteractionAwareFixture> T createUsingFactory(Callback callback, Factory factory, Class<?>[] constructorTypes, Object[] constructorArgs) {
    Callback[] callbacks = new Callback[] { callback };

    T result;
    if (constructorArgs != null && constructorArgs.length > 0) {
        result = (T) factory.newInstance(constructorTypes, constructorArgs, callbacks);
    } else {
        result = (T) factory.newInstance(callbacks);
    }
    return result;
}
 

public Object getProxy() {
	try {
		return factory.newInstance(
				new Callback[] { new PassThroughInterceptor( proxyClass.getName() ), NoOp.INSTANCE }
		);
	}
	catch ( Throwable t ) {
		throw new HibernateException( "Unable to instantiate proxy instance" );
	}
}
 

@SuppressWarnings("unchecked")
public static <T> T create(Class<T> targetClass) throws InstantiationException, IllegalAccessException {
    Enhancer enhancer = new Enhancer();
    enhancer.setSuperclass(targetClass);
    enhancer.setClassLoader(targetClass.getClassLoader());
    enhancer.setCallbackFilter(new TransactionalCallbackFilter());
    Callback[] callbacks = new Callback[] {new DalTransactionInterceptor(), NoOp.INSTANCE};
    enhancer.setCallbacks(callbacks);
    enhancer.setInterfaces(new Class[] {TransactionalIntercepted.class});
    return (T) enhancer.create();
}
 

private Object create(final Enhancer enhancer, List callbacks, boolean useFactory) {
    Object result = enhancer.create();
    if (useFactory) {
        ((Factory)result).setCallbacks((Callback[])callbacks.toArray(new Callback[callbacks
            .size()]));
    }
    return result;
}
 

public ComponentInstantiationPostProcessor() {
    _callbacks = new Callback[2];
    _callbacks[0] = NoOp.INSTANCE;
    _callbacks[1] = new InterceptorDispatcher();

    _callbackFilter = new InterceptorFilter();
}
 

@SuppressWarnings("unchecked") // the constructor promises to construct 'T's
ProxyConstructor(Enhancer enhancer, InjectionPoint injectionPoint, Callback[] callbacks,
    ImmutableMap<Method, List<MethodInterceptor>> methodInterceptors) {
  this.enhanced = enhancer.createClass(); // this returns a cached class if possible
  this.injectionPoint = injectionPoint;
  this.constructor = (Constructor<T>) injectionPoint.getMember();
  this.callbacks = callbacks;
  this.methodInterceptors = methodInterceptors;
  this.fastClass = newFastClassForMember(enhanced, constructor);
  this.constructorIndex = fastClass.getIndex(constructor.getParameterTypes());
}
 

protected GenericDaoBase() {
    super();
    final Type t = getClass().getGenericSuperclass();
    if (t instanceof ParameterizedType) {
        _entityBeanType = (Class<T>) ((ParameterizedType) t).getActualTypeArguments()[0];
    } else if (((Class<?>) t).getGenericSuperclass() instanceof ParameterizedType) {
        _entityBeanType = (Class<T>) ((ParameterizedType) ((Class<?>) t).getGenericSuperclass()).getActualTypeArguments()[0];
    } else {
        _entityBeanType = (Class<T>) ((ParameterizedType) ((Class<?>) ((Class<?>) t).getGenericSuperclass()).getGenericSuperclass()).getActualTypeArguments()[0];
    }

    s_daoMaps.put(_entityBeanType.getCanonicalName(), this);
    final Class<?>[] interfaceClasses = _entityBeanType.getInterfaces();
    if (interfaceClasses != null) {
        for (final Class<?> interfaceClass : interfaceClasses) {
            s_daoMaps.put(interfaceClass.getCanonicalName(), this);
        }
    }
    logDetectedDaos();

    _table = DbUtil.getTableName(_entityBeanType);

    final SqlGenerator generator = new SqlGenerator(_entityBeanType);
    _partialSelectSql = generator.buildSelectSql(false);
    _count = generator.buildCountSql();
    _distinctIdSql = generator.buildDistinctIdSql();
    _partialQueryCacheSelectSql = generator.buildSelectSql(true);
    _embeddedFields = generator.getEmbeddedFields();
    _insertSqls = generator.buildInsertSqls();
    final Pair<StringBuilder, Map<String, Object>> dc = generator.buildDiscriminatorClause();
    _discriminatorClause = dc.first().length() == 0 ? null : dc.first();
    _discriminatorValues = dc.second();

    _idAttributes = generator.getIdAttributes();
    _idField = _idAttributes.get(_table).length > 0 ? _idAttributes.get(_table)[0].field : null;

    _tables = generator.buildTableReferences();

    _allAttributes = generator.getAllAttributes();
    _allColumns = generator.getAllColumns();

    _selectByIdSql = buildSelectByIdSql(createPartialSelectSql(null, true));
    _removeSql = generator.buildRemoveSql();
    _deleteSqls = generator.buildDeleteSqls();
    _removed = generator.getRemovedAttribute();
    _tgs = generator.getTableGenerators();
    _ecAttributes = generator.getElementCollectionAttributes();

    TableGenerator tg = this.getClass().getAnnotation(TableGenerator.class);
    if (tg != null) {
        _tgs.put(tg.name(), tg);
    }
    tg = this.getClass().getSuperclass().getAnnotation(TableGenerator.class);
    if (tg != null) {
        _tgs.put(tg.name(), tg);
    }

    final Callback[] callbacks = new Callback[]{NoOp.INSTANCE, new UpdateBuilder(this)};

    _enhancer = new Enhancer();
    _enhancer.setSuperclass(_entityBeanType);
    _enhancer.setCallbackFilter(s_callbackFilter);
    _enhancer.setCallbacks(callbacks);
    _factory = (Factory) _enhancer.create();

    _searchEnhancer = new Enhancer();
    _searchEnhancer.setSuperclass(_entityBeanType);
    _searchEnhancer.setCallback(new UpdateBuilder(this));

    if (s_logger.isTraceEnabled()) {
        s_logger.trace("Select SQL: " + _partialSelectSql.first().toString());
        s_logger.trace("Remove SQL: " + (_removeSql != null ? _removeSql.first() : "No remove sql"));
        s_logger.trace("Select by Id SQL: " + _selectByIdSql);
        s_logger.trace("Table References: " + _tables);
        s_logger.trace("Insert SQLs:");
        for (final Pair<String, Attribute[]> insertSql : _insertSqls) {
            s_logger.trace(insertSql.first());
        }

        s_logger.trace("Delete SQLs");
        for (final Pair<String, Attribute[]> deletSql : _deleteSqls) {
            s_logger.trace(deletSql.first());
        }

        s_logger.trace("Collection SQLs");
        for (final Attribute attr : _ecAttributes) {
            final EcInfo info = (EcInfo) attr.attache;
            s_logger.trace(info.insertSql);
            s_logger.trace(info.selectSql);
        }
    }

    setRunLevel(ComponentLifecycle.RUN_LEVEL_SYSTEM);
}
 

private Callback[] getCallbacks() {
    return _callbacks;
}
 

private Callback[] getCallbacks() {
    return _callbacks;
}
 

@SuppressWarnings("unchecked")
protected GenericDaoBase() {
    super();
    Type t = getClass().getGenericSuperclass();
    if (t instanceof ParameterizedType) {
        _entityBeanType = (Class<T>)((ParameterizedType)t).getActualTypeArguments()[0];
    } else if (((Class<?>)t).getGenericSuperclass() instanceof ParameterizedType) {
        _entityBeanType = (Class<T>)((ParameterizedType)((Class<?>)t).getGenericSuperclass()).getActualTypeArguments()[0];
    } else {
        _entityBeanType = (Class<T>)((ParameterizedType)((Class<?>)((Class<?>)t).getGenericSuperclass()).getGenericSuperclass()).getActualTypeArguments()[0];
    }

    s_daoMaps.put(_entityBeanType, this);
    Class<?>[] interphaces = _entityBeanType.getInterfaces();
    if (interphaces != null) {
        for (Class<?> interphace : interphaces) {
            s_daoMaps.put(interphace, this);
        }
    }

    _table = DbUtil.getTableName(_entityBeanType);

    final SqlGenerator generator = new SqlGenerator(_entityBeanType);
    _partialSelectSql = generator.buildSelectSql(false);
    _count = generator.buildCountSql();
    _distinctIdSql= generator.buildDistinctIdSql();
    _partialQueryCacheSelectSql = generator.buildSelectSql(true);
    _embeddedFields = generator.getEmbeddedFields();
    _insertSqls = generator.buildInsertSqls();
    final Pair<StringBuilder, Map<String, Object>> dc = generator.buildDiscriminatorClause();
    _discriminatorClause = dc.first().length() == 0 ? null : dc.first();
    _discriminatorValues = dc.second();

    _idAttributes = generator.getIdAttributes();
    _idField = _idAttributes.get(_table).length > 0 ? _idAttributes.get(_table)[0].field : null;

    _tables = generator.buildTableReferences();

    _allAttributes = generator.getAllAttributes();
    _allColumns = generator.getAllColumns();

    _selectByIdSql = buildSelectByIdSql(createPartialSelectSql(null, true));
    _removeSql = generator.buildRemoveSql();
    _deleteSqls = generator.buildDeleteSqls();
    _removed = generator.getRemovedAttribute();
    _tgs = generator.getTableGenerators();
    _ecAttributes = generator.getElementCollectionAttributes();

    TableGenerator tg = this.getClass().getAnnotation(TableGenerator.class);
    if (tg != null) {
        _tgs.put(tg.name(), tg);
    }
    tg = this.getClass().getSuperclass().getAnnotation(TableGenerator.class);
    if (tg != null) {
        _tgs.put(tg.name(), tg);
    }

    Callback[] callbacks = new Callback[] {NoOp.INSTANCE, new UpdateBuilder(this)};

    _enhancer = new Enhancer();
    _enhancer.setSuperclass(_entityBeanType);
    _enhancer.setCallbackFilter(s_callbackFilter);
    _enhancer.setCallbacks(callbacks);
    _factory = (Factory)_enhancer.create();

    _searchEnhancer = new Enhancer();
    _searchEnhancer.setSuperclass(_entityBeanType);
    _searchEnhancer.setCallback(new UpdateBuilder(this));

    if (s_logger.isTraceEnabled()) {
        s_logger.trace("Select SQL: " + _partialSelectSql.first().toString());
        s_logger.trace("Remove SQL: " + (_removeSql != null ? _removeSql.first() : "No remove sql"));
        s_logger.trace("Select by Id SQL: " + _selectByIdSql);
        s_logger.trace("Table References: " + _tables);
        s_logger.trace("Insert SQLs:");
        for (final Pair<String, Attribute[]> insertSql : _insertSqls) {
            s_logger.trace(insertSql.first());
        }

        s_logger.trace("Delete SQLs");
        for (final Pair<String, Attribute[]> deletSql : _deleteSqls) {
            s_logger.trace(deletSql.first());
        }

        s_logger.trace("Collection SQLs");
        for (Attribute attr : _ecAttributes) {
            EcInfo info = (EcInfo)attr.attache;
            s_logger.trace(info.insertSql);
            s_logger.trace(info.selectSql);
        }
    }

    setRunLevel(ComponentLifecycle.RUN_LEVEL_SYSTEM);
}