/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.ejb3.stateful;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Hashtable;
import java.util.Map;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.ejb.EJBHome;
import javax.ejb.EJBObject;
import javax.ejb.Handle;
import javax.ejb.Init;
import javax.ejb.PostActivate;
import javax.ejb.PrePassivate;
import javax.ejb.Remote;
import javax.ejb.RemoteHome;
import javax.ejb.TimerService;
import org.jboss.annotation.ejb.LocalBinding;
import org.jboss.annotation.ejb.RemoteBinding;
import org.jboss.annotation.ejb.RemoteBindings;
import org.jboss.annotation.ejb.cache.Cache;
import org.jboss.aop.AspectManager;
import org.jboss.aop.MethodInfo;
import org.jboss.aop.joinpoint.Invocation;
import org.jboss.aop.joinpoint.InvocationResponse;
import org.jboss.aop.util.MethodHashing;
import org.jboss.aspects.asynch.FutureHolder;
import org.jboss.ejb3.BeanContext;
import org.jboss.ejb3.EJBContainerInvocation;
import org.jboss.ejb3.Ejb3Deployment;
import org.jboss.ejb3.ProxyFactory;
import org.jboss.ejb3.ProxyFactoryHelper;
import org.jboss.ejb3.ProxyUtils;
import org.jboss.ejb3.SessionContainer;
import org.jboss.ejb3.cache.StatefulCache;
import org.jboss.ejb3.interceptor.InterceptorInfoRepository;
import org.jboss.ejb3.proxy.EJBMetaDataImpl;
import org.jboss.ejb3.proxy.handle.HomeHandleImpl;
import org.jboss.injection.Injector;
import org.jboss.injection.JndiFieldInjector;
import org.jboss.logging.Logger;
/**
* Comment
*
* @author <a href="mailto:bill@jboss.org">Bill Burke</a>
* @version $Revision: 63485 $
*/
public class StatefulContainer extends SessionContainer
{
private static final Logger log = Logger.getLogger(StatefulContainer.class);
protected StatefulCache cache;
public StatefulContainer(ClassLoader cl, String beanClassName, String ejbName, AspectManager manager,
Hashtable ctxProperties, InterceptorInfoRepository interceptorRepository,
Ejb3Deployment deployment)
{
super(cl, beanClassName, ejbName, manager, ctxProperties, interceptorRepository, deployment);
beanContextClass = StatefulBeanContext.class;
}
public void start() throws Exception
{
try
{
super.start();
Cache cacheConfig = (Cache) resolveAnnotation(Cache.class);
cache = (StatefulCache) cacheConfig.value().newInstance();
cache.initialize(this);
cache.start();
}
catch (Exception e)
{
try
{
stop();
}
catch (Exception ignore)
{
log.debug("Failed to cleanup after start() failure", ignore);
}
throw e;
}
}
public void stop() throws Exception
{
if (cache != null) cache.stop();
super.stop();
}
public StatefulCache getCache()
{
return cache;
}
/**
* Performs a synchronous local invocation
*/
public Object localInvoke(Object id, Method method, Object[] args)
throws Throwable
{
return localInvoke(id, method, args, null);
}
/**
* Performs a synchronous or asynchronous local invocation
*
*/
public Object localHomeInvoke(Method method, Object[] args) throws Throwable
{
ClassLoader oldLoader = Thread.currentThread().getContextClassLoader();
pushEnc();
try
{
long hash = MethodHashing.calculateHash(method);
MethodInfo info = (MethodInfo) methodInterceptors.get(hash);
if (info == null)
{
throw new RuntimeException(
"Could not resolve beanClass method from proxy call: "
+ method.toString());
}
return invokeLocalHomeMethod(info, args);
}
finally
{
Thread.currentThread().setContextClassLoader(oldLoader);
popEnc();
}
}
/**
* Performs a synchronous or asynchronous local invocation
*
* @param provider If null a synchronous invocation, otherwise an asynchronous
*/
public Object localInvoke(Object id, Method method, Object[] args,
FutureHolder provider) throws Throwable
{
long start = System.currentTimeMillis();
ClassLoader oldLoader = Thread.currentThread().getContextClassLoader();
pushEnc();
try
{
long hash = MethodHashing.calculateHash(method);
MethodInfo info = (MethodInfo) methodInterceptors.get(hash);
if (info == null)
{
throw new RuntimeException(
"Could not resolve beanClass method from proxy call: "
+ method.toString());
}
Method unadvisedMethod = info.getUnadvisedMethod();
try
{
invokeStats.callIn();
if (unadvisedMethod != null && isHomeMethod(unadvisedMethod))
{
return invokeLocalHomeMethod(info, args);
}
else if (unadvisedMethod != null
&& isEJBObjectMethod(unadvisedMethod))
{
return invokeEJBLocalObjectMethod(id, info, args);
}
StatefulContainerInvocation nextInvocation = new StatefulContainerInvocation(info, id);
nextInvocation.setAdvisor(this);
nextInvocation.setArguments(args);
ProxyUtils.addLocalAsynchronousInfo(nextInvocation, provider);
invokedMethod.push(new InvokedMethod(true, method));
return nextInvocation.invokeNext();
}
finally
{
if (unadvisedMethod != null)
{
long end = System.currentTimeMillis();
long elapsed = end - start;
invokeStats.updateStats(unadvisedMethod, elapsed);
}
invokeStats.callOut();
invokedMethod.pop();
}
}
finally
{
Thread.currentThread().setContextClassLoader(oldLoader);
popEnc();
}
}
/**
* Create a stateful bean and return its oid.
*
* @return
*/
public Object createSession()
{
ClassLoader oldLoader = Thread.currentThread().getContextClassLoader();
pushEnc();
try
{
Thread.currentThread().setContextClassLoader(classloader);
return getCache().create().getId();
}
finally
{
Thread.currentThread().setContextClassLoader(oldLoader);
popEnc();
}
}
/**
* Create a stateful bean and return its oid.
*
* @return
*/
public Object createSession(Class[] initTypes, Object[] initValues)
{
ClassLoader oldLoader = Thread.currentThread().getContextClassLoader();
pushEnc();
try
{
Thread.currentThread().setContextClassLoader(classloader);
return getCache().create(initTypes, initValues).getId();
}
finally
{
Thread.currentThread().setContextClassLoader(oldLoader);
popEnc();
}
}
protected void destroySession(Object id)
{
getCache().remove(id);
}
/**
* This should be a remote invocation call
*
* @param invocation
* @return
* @throws Throwable
*/
public InvocationResponse dynamicInvoke(Object target, Invocation invocation) throws Throwable
{
long start = System.currentTimeMillis();
ClassLoader oldLoader = Thread.currentThread().getContextClassLoader();
EJBContainerInvocation newSi = null;
pushEnc();
try
{
Thread.currentThread().setContextClassLoader(classloader);
StatefulRemoteInvocation si = (StatefulRemoteInvocation) invocation;
MethodInfo info = (MethodInfo) methodInterceptors.get(si.getMethodHash());
if (info == null)
{
throw new RuntimeException("Could not resolve beanClass method from proxy call");
}
InvocationResponse response = null;
Method unadvisedMethod = info.getUnadvisedMethod();
Object newId = null;
try
{
invokeStats.callIn();
if (info != null && unadvisedMethod != null && isHomeMethod(unadvisedMethod))
{
response = invokeHomeMethod(info, si);
}
else if (info != null && unadvisedMethod != null && isEJBObjectMethod(unadvisedMethod))
{
response = invokeEJBObjectMethod(info, si);
}
else
{
if (si.getId() == null)
{
StatefulBeanContext ctx = getCache().create();
newId = ctx.getId();
}
else
{
newId = si.getId();
}
newSi = new StatefulContainerInvocation(info, newId);
newSi.setArguments(si.getArguments());
newSi.setMetaData(si.getMetaData());
newSi.setAdvisor(this);
Object rtn = null;
invokedMethod.push(new InvokedMethod(false, unadvisedMethod));
rtn = newSi.invokeNext();
response = marshallResponse(invocation, rtn, newSi.getResponseContextInfo());
if (newId != null) response.addAttachment(StatefulConstants.NEW_ID, newId);
}
}
catch (Throwable throwable)
{
Throwable exception = throwable;
if (newId != null)
{
exception = new ForwardId(throwable, newId);
}
Map responseContext = null;
if (newSi != null) newSi.getResponseContextInfo();
response = marshallException(invocation, exception, responseContext);
return response;
}
finally
{
if (unadvisedMethod != null)
{
long end = System.currentTimeMillis();
long elapsed = end - start;
invokeStats.updateStats(unadvisedMethod, elapsed);
}
invokeStats.callOut();
invokedMethod.pop();
}
return response;
}
finally
{
Thread.currentThread().setContextClassLoader(oldLoader);
popEnc();
}
}
public TimerService getTimerService()
{
throw new UnsupportedOperationException("stateful bean doesn't support TimerService (EJB3 18.2#2)");
}
public TimerService getTimerService(Object pKey)
{
return getTimerService();
}
@Override
public void invokePostActivate(BeanContext beanContext)
{
for (Injector injector : injectors)
{
if (injector instanceof JndiFieldInjector)
{
Field field = ((JndiFieldInjector) injector).getField();
if (field.isAnnotationPresent(javax.ejb.EJB.class))
{
continue; // skip nested EJB injection since the local proxy will be (de)serialized correctly
}
injector.inject(beanContext);
}
}
callbackHandler.postActivate(beanContext);
}
@Override
public void invokePrePassivate(BeanContext beanContext)
{
callbackHandler.prePassivate(beanContext);
}
@Override
protected Class[] getHandledCallbacks()
{
return new Class[]
{PostConstruct.class, PreDestroy.class, PostActivate.class,
PrePassivate.class};
}
public void invokeInit(Object bean)
{
try
{
Method[] methods = bean.getClass().getDeclaredMethods();
for (int i = 0; i < methods.length; i++)
{
if (methods[i].getParameterTypes().length == 0)
{
if ((methods[i].getAnnotation(Init.class) != null)
|| (resolveAnnotation(methods[i], Init.class) != null))
{
methods[i].invoke(bean, new Object[0]);
}
}
}
}
catch (Exception e)
{
throw new RuntimeException(e);
}
}
public void invokeInit(Object bean, Class[] initParameterTypes,
Object[] initParameterValues)
{
try
{
Method[] methods = bean.getClass().getDeclaredMethods();
for (int i = 0; i < methods.length; i++)
{
if ((methods[i].getAnnotation(Init.class) != null)
|| (resolveAnnotation(methods[i], Init.class) != null))
{
Object[] parameters = getInitParameters(methods[i],
initParameterTypes, initParameterValues);
if (parameters != null)
methods[i].invoke(bean, parameters);
}
}
}
catch (Exception e)
{
throw new RuntimeException(e);
}
}
protected Object[] getInitParameters(Method method,
Class[] initParameterTypes, Object[] initParameterValues)
{
if (method.getParameterTypes().length == initParameterTypes.length)
{
for (int i = 0; i < initParameterTypes.length; ++i)
{
Class formal = method.getParameterTypes()[i];
Class actual = initParameterTypes[i];
if (!isMethodInvocationConvertible(formal, actual == null ? null
: actual))
return null;
}
return initParameterValues;
}
return null;
}
/**
* Determines whether a type represented by a class object is convertible to
* another type represented by a class object using a method invocation
* conversion, treating object types of primitive types as if they were
* primitive types (that is, a Boolean actual parameter type matches boolean
* primitive formal type). This behavior is because this method is used to
* determine applicable methods for an actual parameter list, and primitive
* types are represented by their object duals in reflective method calls.
*
* @param formal the formal parameter type to which the actual parameter type
* should be convertible
* @param actual the actual parameter type.
* @return true if either formal type is assignable from actual type, or
* formal is a primitive type and actual is its corresponding object
* type or an object type of a primitive type that can be converted
* to the formal type.
*/
private static boolean isMethodInvocationConvertible(Class formal,
Class actual)
{
/*
* if it's a null, it means the arg was null
*/
if (actual == null && !formal.isPrimitive())
{
return true;
}
/*
* Check for identity or widening reference conversion
*/
if (actual != null && formal.isAssignableFrom(actual))
{
return true;
}
/*
* Check for boxing with widening primitive conversion. Note that actual
* parameters are never primitives.
*/
if (formal.isPrimitive())
{
if (formal == Boolean.TYPE && actual == Boolean.class)
return true;
if (formal == Character.TYPE && actual == Character.class)
return true;
if (formal == Byte.TYPE && actual == Byte.class)
return true;
if (formal == Short.TYPE
&& (actual == Short.class || actual == Byte.class))
return true;
if (formal == Integer.TYPE
&& (actual == Integer.class || actual == Short.class || actual == Byte.class))
return true;
if (formal == Long.TYPE
&& (actual == Long.class || actual == Integer.class
|| actual == Short.class || actual == Byte.class))
return true;
if (formal == Float.TYPE
&& (actual == Float.class || actual == Long.class
|| actual == Integer.class || actual == Short.class || actual == Byte.class))
return true;
if (formal == Double.TYPE
&& (actual == Double.class || actual == Float.class
|| actual == Long.class || actual == Integer.class
|| actual == Short.class || actual == Byte.class))
return true;
}
return false;
}
private Object invokeEJBLocalObjectMethod(Object id, MethodInfo info,
Object[] args) throws Exception
{
Method unadvisedMethod = info.getUnadvisedMethod();
if (unadvisedMethod.getName().equals("remove"))
{
destroySession(id);
return null;
}
else if (unadvisedMethod.getName().equals("getEJBLocalHome"))
{
Object bean = getCache().get(id).getInstance();
return bean;
}
else if (unadvisedMethod.getName().equals("getPrimaryKey"))
{
return id;
}
else if (unadvisedMethod.getName().equals("isIdentical"))
{
EJBObject bean = (EJBObject) args[0];
Object primaryKey = bean.getPrimaryKey();
boolean isIdentical = id.equals(primaryKey);
return isIdentical;
}
else
{
return null;
}
}
private Object invokeLocalHomeMethod(MethodInfo info, Object[] args)
throws Exception
{
Method unadvisedMethod = info.getUnadvisedMethod();
if (unadvisedMethod.getName().equals("create"))
{
Class[] initParameterTypes =
{};
Object[] initParameterValues =
{};
if (unadvisedMethod.getParameterTypes().length > 0)
{
initParameterTypes = unadvisedMethod.getParameterTypes();
initParameterValues = args;
}
LocalBinding binding = (LocalBinding) resolveAnnotation(LocalBinding.class);
StatefulLocalProxyFactory factory = new StatefulLocalProxyFactory();
factory.setContainer(this);
factory.init();
Object proxy = factory.createProxy(initParameterTypes,
initParameterValues);
return proxy;
}
else if (unadvisedMethod.getName().equals("remove"))
{
StatefulHandleImpl handle = (StatefulHandleImpl) args[0];
destroySession(handle.id);
return null;
}
else
{
return null;
}
}
public Object createLocalProxy(Object id) throws Exception
{
StatefulLocalProxyFactory factory = new StatefulLocalProxyFactory();
factory.setContainer(this);
factory.init();
return factory.createProxy(id);
}
public Object createRemoteProxy(Object id) throws Exception
{
RemoteBinding binding = null;
RemoteBindings bindings = (RemoteBindings) resolveAnnotation(RemoteBindings.class);
if (bindings != null)
binding = bindings.value()[0];
else
binding = (RemoteBinding) resolveAnnotation(RemoteBinding.class);
StatefulRemoteProxyFactory factory = new StatefulRemoteProxyFactory();
factory.setContainer(this);
factory.setRemoteBinding(binding);
factory.init();
if (id != null)
return factory.createProxy(id);
else
return factory.createProxy();
}
protected InvocationResponse invokeHomeMethod(MethodInfo info,
StatefulRemoteInvocation statefulInvocation) throws Throwable
{
Method unadvisedMethod = info.getUnadvisedMethod();
if (unadvisedMethod.getName().equals("create"))
{
Class[] initParameterTypes =
{};
Object[] initParameterValues =
{};
if (unadvisedMethod.getParameterTypes().length > 0)
{
initParameterTypes = unadvisedMethod.getParameterTypes();
initParameterValues = statefulInvocation.getArguments();
}
StatefulContainerInvocation newStatefulInvocation = buildNewInvocation(
info, statefulInvocation, initParameterTypes,
initParameterValues);
Object proxy = createRemoteProxy(newStatefulInvocation.getId());
InvocationResponse response = marshallResponse(statefulInvocation, proxy, newStatefulInvocation.getResponseContextInfo());
if (newStatefulInvocation.getId() != null)
response.addAttachment(StatefulConstants.NEW_ID,
newStatefulInvocation.getId());
return response;
}
else if (unadvisedMethod.getName().equals("remove"))
{
StatefulHandleImpl handle = (StatefulHandleImpl) statefulInvocation
.getArguments()[0];
destroySession(handle.id);
InvocationResponse response = new InvocationResponse(null);
response.setContextInfo(statefulInvocation.getResponseContextInfo());
return response;
}
else if (unadvisedMethod.getName().equals("getEJBMetaData"))
{
Class remote = null;
Class home = null;
Class pkClass = Object.class;
HomeHandleImpl homeHandle = null;
Remote remoteAnnotation = (Remote) resolveAnnotation(Remote.class);
if (remoteAnnotation != null)
remote = remoteAnnotation.value()[0];
RemoteHome homeAnnotation = (RemoteHome) resolveAnnotation(RemoteHome.class);
if (homeAnnotation != null)
home = homeAnnotation.value();
RemoteBinding remoteBindingAnnotation = (RemoteBinding) resolveAnnotation(RemoteBinding.class);
if (remoteBindingAnnotation != null)
homeHandle = new HomeHandleImpl(remoteBindingAnnotation
.jndiBinding());
EJBMetaDataImpl metadata = new EJBMetaDataImpl(remote, home, pkClass,
true, false, homeHandle);
InvocationResponse response = marshallResponse(statefulInvocation, metadata, null);
return response;
}
else if (unadvisedMethod.getName().equals("getHomeHandle"))
{
HomeHandleImpl homeHandle = null;
RemoteBinding remoteBindingAnnotation = (RemoteBinding) resolveAnnotation(RemoteBinding.class);
if (remoteBindingAnnotation != null)
homeHandle = new HomeHandleImpl(remoteBindingAnnotation
.jndiBinding());
InvocationResponse response = marshallResponse(statefulInvocation, homeHandle, null);
return response;
}
else
{
return null;
}
}
protected InvocationResponse invokeEJBObjectMethod(MethodInfo info,
StatefulRemoteInvocation statefulInvocation) throws Throwable
{
Method unadvisedMethod = info.getUnadvisedMethod();
if (unadvisedMethod.getName().equals("getHandle"))
{
StatefulContainerInvocation newStatefulInvocation = buildInvocation(
info, statefulInvocation);
StatefulHandleImpl handle = new StatefulHandleImpl();
handle.id = newStatefulInvocation.getId();
RemoteBinding remoteBinding = (RemoteBinding) resolveAnnotation(RemoteBinding.class);
if (remoteBinding != null)
handle.jndiName = remoteBinding.jndiBinding();
InvocationResponse response = marshallResponse(statefulInvocation, handle, null);
return response;
}
else if (unadvisedMethod.getName().equals("remove"))
{
destroySession(statefulInvocation.getId());
InvocationResponse response = new InvocationResponse(null);
return response;
}
else if (unadvisedMethod.getName().equals("getEJBHome"))
{
HomeHandleImpl homeHandle = null;
RemoteBinding remoteBindingAnnotation = (RemoteBinding) resolveAnnotation(RemoteBinding.class);
if (remoteBindingAnnotation != null)
homeHandle = new HomeHandleImpl(ProxyFactoryHelper.getHomeJndiName(this));
EJBHome ejbHome = homeHandle.getEJBHome();
InvocationResponse response = marshallResponse(statefulInvocation, ejbHome, null);
return response;
}
else if (unadvisedMethod.getName().equals("getPrimaryKey"))
{
Object id = statefulInvocation.getId();
InvocationResponse response = marshallResponse(statefulInvocation, id, null);
return response;
}
else if (unadvisedMethod.getName().equals("isIdentical"))
{
Object id = statefulInvocation.getId();
EJBObject bean = (EJBObject) statefulInvocation.getArguments()[0];
Object primaryKey = bean.getPrimaryKey();
boolean isIdentical = id.equals(primaryKey);
InvocationResponse response = marshallResponse(statefulInvocation, isIdentical, null);
return response;
}
else
{
return null;
}
}
private StatefulContainerInvocation buildNewInvocation(MethodInfo info,
StatefulRemoteInvocation statefulInvocation,
Class[] initParameterTypes, Object[] initParameterValues)
{
StatefulContainerInvocation newStatefulInvocation = null;
StatefulBeanContext ctx = null;
if (initParameterTypes.length > 0)
ctx = getCache().create(initParameterTypes, initParameterValues);
else
ctx = getCache().create();
Object newId = ctx.getId();
newStatefulInvocation = new StatefulContainerInvocation(info, newId);
newStatefulInvocation.setArguments(statefulInvocation.getArguments());
newStatefulInvocation.setMetaData(statefulInvocation.getMetaData());
newStatefulInvocation.setAdvisor(this);
return newStatefulInvocation;
}
private StatefulContainerInvocation buildInvocation(MethodInfo info,
StatefulRemoteInvocation statefulInvocation)
{
StatefulContainerInvocation newStatefulInvocation = null;
Object newId = null;
if (statefulInvocation.getId() == null)
{
StatefulBeanContext ctx = getCache().create();
newId = ctx.getId();
newStatefulInvocation = new StatefulContainerInvocation(info, newId);
}
else
{
newStatefulInvocation = new StatefulContainerInvocation(info, statefulInvocation.getId());
}
newStatefulInvocation.setArguments(statefulInvocation.getArguments());
newStatefulInvocation.setMetaData(statefulInvocation.getMetaData());
newStatefulInvocation.setAdvisor(this);
return newStatefulInvocation;
}
@Override
public Object getBusinessObject(BeanContext beanContext, Class businessInterface) throws IllegalStateException
{
StatefulBeanContext ctx = (StatefulBeanContext) beanContext;
boolean isRemote = false;
boolean found = false;
Class[] remoteInterfaces = ProxyFactoryHelper.getRemoteInterfaces(this);
if (remoteInterfaces != null)
{
for (Class intf : remoteInterfaces)
{
if (intf.getName().equals(businessInterface.getName()))
{
isRemote = true;
found = true;
break;
}
}
}
if (found == false)
{
Class[] localInterfaces = ProxyFactoryHelper.getLocalInterfaces(this);
if (localInterfaces != null)
{
for (Class intf : localInterfaces)
{
if (intf.getName().equals(businessInterface.getName()))
{
found = true;
break;
}
}
}
}
if (found == false) throw new IllegalStateException(businessInterface.getName() + " is not a business interface");
for (ProxyFactory factory : proxyDeployer.getProxyFactories())
{
if (isRemote && factory instanceof StatefulRemoteProxyFactory)
{
return ((StatefulRemoteProxyFactory) factory).createProxy(ctx.getId());
}
else if (!isRemote && factory instanceof StatefulLocalProxyFactory)
{
return ((StatefulLocalProxyFactory) factory).createProxy(ctx.getId());
}
}
throw new IllegalStateException("Unable to create proxy for getBusinessObject as a proxy factory was not found");
}
protected void removeHandle(Handle arg) throws Exception
{
/*
StatefulHandleImpl handle = (StatefulHandleImpl) arg;
destroySession(handle.id);
*/
arg.getEJBObject().remove();
}
}
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