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/*
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*
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*
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* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
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*/
package com.sun.ejb.portable;
import java.io.*;
import jakarta.ejb.*;
import javax.rmi.PortableRemoteObject;
/**
* A portable, Serializable implementation of EJBMetaData.
* This class can potentially be instantiated in another vendor's container
* so it must not refer to any non-portable RI-specific classes.
*
*/
public final class EJBMetaDataImpl implements jakarta.ejb.EJBMetaData, Serializable
{
// for backward compatibility
private static final long serialVersionUID = 5777657175353026918L;
private Class keyClass;
private Class homeClass;
private Class remoteClass;
private boolean isSessionBean;
private boolean isStatelessSessionBean;
private HomeHandle homeHandle;
// Dont serialize the EJBHome ref directly, use the HomeHandle
transient private EJBHome ejbHomeStub;
// this constructor is only called by the EntityContainer
public EJBMetaDataImpl(EJBHome ejbHomeStub, Class homeClass,
Class remoteClass, Class keyClass)
{
this(ejbHomeStub, homeClass, remoteClass, keyClass, false, false);
}
// this constructor is only called by non-entity-bean containers
public EJBMetaDataImpl(EJBHome ejbHomeStub, Class homeClass,
Class remoteClass,
boolean isSessionBean, boolean isStatelessSessionBean)
{
this(ejbHomeStub, homeClass, remoteClass, null, isSessionBean, isStatelessSessionBean);
}
// this constructor is only called in the RI's EJB container
public EJBMetaDataImpl(EJBHome ejbHomeStub, Class homeClass,
Class remoteClass, Class keyClass,
boolean isSessionBean, boolean isStatelessSessionBean)
{
this.ejbHomeStub = ejbHomeStub;
this.homeHandle = new HomeHandleImpl(ejbHomeStub);
this.keyClass = keyClass;
this.homeClass = homeClass;
this.remoteClass = remoteClass;
this.isSessionBean = isSessionBean;
this.isStatelessSessionBean = isStatelessSessionBean;
}
/**
*
*/
public Class getHomeInterfaceClass()
{
return homeClass;
}
/**
*
*/
public Class getRemoteInterfaceClass()
{
return remoteClass;
}
/**
*
*/
public EJBHome getEJBHome()
{
return ejbHomeStub;
}
/**
*
*/
public Class getPrimaryKeyClass()
{
if ( keyClass == null ) {
// for SessionBeans there is no primary key
throw new RuntimeException("SessionBeans do not have a primary key");
}
return keyClass;
}
/**
*
*/
public boolean isSession()
{
return isSessionBean;
}
public boolean isStatelessSession()
{
return isStatelessSessionBean;
}
private void readObject(ObjectInputStream in)
throws IOException, ClassNotFoundException
{
isSessionBean = in.readBoolean();
isStatelessSessionBean = in.readBoolean();
// Use thread context classloader to load home/remote/primarykey classes
// See EJB2.0 spec section 18.4.4
ClassLoader loader = Thread.currentThread().getContextClassLoader();
remoteClass = loader.loadClass(in.readUTF());
homeClass = loader.loadClass(in.readUTF());
if ( !isSessionBean )
keyClass = loader.loadClass(in.readUTF());
homeHandle = (HomeHandle)in.readObject();
ejbHomeStub = homeHandle.getEJBHome();
// narrow the home so that the application doesnt have to do
// a narrow after EJBMetaData.getEJBHome().
ejbHomeStub = (EJBHome)PortableRemoteObject.narrow(ejbHomeStub, homeClass);
}
private void writeObject(ObjectOutputStream out)
throws IOException
{
out.writeBoolean(isSessionBean);
out.writeBoolean(isStatelessSessionBean);
// Write the String names of the Class objects,
// since Class objects cant be serialized unless the classes
// they represent are Serializable.
out.writeUTF(remoteClass.getName());
out.writeUTF(homeClass.getName());
if ( !isSessionBean )
out.writeUTF(keyClass.getName());
out.writeObject(homeHandle);
}
}