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// Portions Copyright [2016-2017] [Payara Foundation and/or its affiliates]
package com.sun.ejb.containers;
import com.sun.enterprise.container.common.spi.util.IndirectlySerializable;
import com.sun.enterprise.container.common.spi.util.SerializableObjectFactory;
import java.io.IOException;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
/**
* This class is used as a "proxy" or adapter between the business interface
* proxy and the EJBLocalObjectInvocationHandler. An instance of this class
* is created for each business interface of a bean. All java.lang.Object
* methods and mthods of IndirectlySerializable are handled by this
* InvocationHandler itself while the business interface methods are delegated
* to the delegate (which is the EJBLocalObjectInvocaionHandler).
*
* @author Mahesh Kannan
*
*/
public class EJBLocalObjectInvocationHandlerDelegate
implements InvocationHandler {
private final Class intfClass;
private final long containerId;
private final EJBLocalObjectInvocationHandler delegate;
private final boolean isOptionalLocalBusinessView;
EJBLocalObjectInvocationHandlerDelegate(Class intfClass, long containerId,
EJBLocalObjectInvocationHandler delegate) {
this.intfClass = intfClass;
this.containerId = containerId;
this.delegate = delegate;
this.isOptionalLocalBusinessView = delegate.isOptionalLocalBusinessView();
}
@Override
public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable {
Class methodClass = method.getDeclaringClass();
Object result = null;
if( methodClass == java.lang.Object.class ) {
result = InvocationHandlerUtil.invokeJavaObjectMethod
(this, method, args);
} else if( methodClass == IndirectlySerializable.class ) {
result = this.getSerializableObjectFactory();
}else {
result = delegate.invoke(intfClass, method, args);
}
return result;
}
EJBLocalObjectInvocationHandler getDelegate() {
return delegate;
}
@Override
public int hashCode() {
return (int) containerId;
}
@Override
public boolean equals(Object other) {
boolean result = false;
if ((other != null)
&& (other instanceof EJBLocalObjectInvocationHandlerDelegate)) {
EJBLocalObjectInvocationHandlerDelegate otherDelegate
= (EJBLocalObjectInvocationHandlerDelegate) other;
if ((containerId == otherDelegate.containerId)
&& (intfClass == otherDelegate.intfClass)) {
EJBLocalObjectInvocationHandler otherHandler
= otherDelegate.delegate;
result = (delegate.getKey() != null)
? delegate.getKey().equals(otherHandler.getKey())
: (otherHandler.getKey() == null);
}
}
return result;
}
@Override
public String toString() {
return intfClass.getName() + "_" + System.identityHashCode(this);
}
public SerializableObjectFactory getSerializableObjectFactory() {
// Note: for stateful SessionBeans, the EJBLocalObjectImpl contains
// a pointer to the EJBContext. We should not serialize it here.
return new SerializableLocalObjectDelegate(
containerId, intfClass.getName(), delegate.getKey(),
isOptionalLocalBusinessView,
delegate.getSfsbClientVersion());
}
private static final class SerializableLocalObjectDelegate
implements SerializableObjectFactory
{
private final long containerId;
private final String intfClassName;
private final Object primaryKey;
private final boolean isOptionalLocalBusinessView;
private long version = 0L; //Used only for SFSBs
SerializableLocalObjectDelegate(long containerId,
String intfClassName, Object primaryKey, boolean isOptionalLocalBusView, long version) {
this.containerId = containerId;
this.intfClassName = intfClassName;
this.primaryKey = primaryKey;
this.isOptionalLocalBusinessView = isOptionalLocalBusView;
this.version = version;
}
@Override
public Object createObject(long appUniqueId)
throws IOException
{
BaseContainer container = EjbContainerUtilImpl.getInstance().getContainer(containerId, appUniqueId);
// if really cannot find it
if(container == null) {
throw new IOException(String.format("Cannot find EJB with ID: %d", containerId));
}
EJBLocalObjectImpl ejbLocalBusinessObjectImpl = isOptionalLocalBusinessView ?
container.getOptionalEJBLocalBusinessObjectImpl(primaryKey) :
container.getEJBLocalBusinessObjectImpl(primaryKey);
ejbLocalBusinessObjectImpl.setSfsbClientVersion(version);
// Return the client EJBLocalObject.
return isOptionalLocalBusinessView ?
ejbLocalBusinessObjectImpl.getOptionalLocalBusinessClientObject() :
ejbLocalBusinessObjectImpl.getClientObject(intfClassName);
}
}
}