transactionpersistencecontextbean.java

This book shows you how to use JBoss to develop EJB projects.

package com.titan.travelagent;

import javax.ejb.Stateful;
import javax.ejb.Remove;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.PersistenceContextType;

import com.titan.domain.Cabin; 

@Stateful
public class TransactionPersistenceContextBean implements TransactionPersistenceContextRemote
{
    @PersistenceContext(unitName="titan", type=PersistenceContextType.TRANSACTION)
    private EntityManager manager;

    private Cabin cabin;

    public void setCabin(int pk)
    {
       cabin = manager.find(Cabin.class, pk);
    }

    public void updateBedCount(int newBedCount)
    {
       cabin.setBedCount(newBedCount);
    }

    @Remove
    public void remove()
    {
    }
}