customerejb.java

《J2EE企业级应用开发》一书的配套源代码

package com.j2eeapp.cdstore.customer;

import java.rmi.RemoteException;
import javax.ejb.*;
import javax.naming.*;
import com.j2eeapp.cdstore.util.JNDINames;

/**
 * customer:
 * =account+profile
 */
public abstract class CustomerEJB implements EntityBean
{
    /**
     * Attributes declaration
    */
    public EntityContext EJB_Context;
    
    /**
     * @J2EE_METHOD  --  CustomerEJB
     */
    public CustomerEJB    ()  
    { 

    }
    
    /**
     * @J2EE_METHOD  --  ejbCreate
     * Matching method of the create() method of the bean's home interface. The container
     * invokes an ejbCreate method to create an entity object. It executes in the transaction
     * context determined by the transaction attribute of the matching create() method.
     * @throws javax.ejb.CreateException
     */
    public String ejbCreate    (String userId) throws CreateException 
    { 
 		setUserId(userId);
 		return null;    
    }
    
    /**
     * @J2EE_METHOD  --  ejbPostCreate
     * Matching method of ejbCreate. The container invokes the matching ejbPostCreate method
     * on an instance after it invokes the ejbCreate method with the same arguments. It
     * executes in the same transaction context as that of the matching ejbCreate method.
     * @throws javax.ejb.CreateException
     */
    public void ejbPostCreate    (String userId) throws CreateException 
    { 
    	try {
        InitialContext ic = new InitialContext();
        AccountLocalHome alh = (AccountLocalHome) ic.lookup(JNDINames.ACCOUNT);
        AccountLocal account = alh.create(userId,AccountLocalHome.Active);
        setAccount(account);
        
        ProfileLocalHome plh = (ProfileLocalHome) ic.lookup(JNDINames.PROFILE);
        ProfileLocal profile = plh.create(userId,ProfileLocalHome.DefaultFavoriteCategory,
        	ProfileLocalHome.DefaultBanneropt);
        setProfile(profile);
        } catch (NamingException ne) {
            throw new CreateException ("could not lookup ejb. Exception is " + ne.getMessage());
        }

    }
    
     public String ejbCreate    (String userId,ContactInfoLocal contactInfo,
    CreditCardLocal creditCard,ProfileLocal profile) throws CreateException 
    { 
 		setUserId(userId);
 		return null;    
    }
    
    /**
     * @J2EE_METHOD  --  ejbPostCreate
     * Matching method of ejbCreate. The container invokes the matching ejbPostCreate method
     * on an instance after it invokes the ejbCreate method with the same arguments. It
     * executes in the same transaction context as that of the matching ejbCreate method.
     * @throws javax.ejb.CreateException
     */
    public void ejbPostCreate    (String userId,ContactInfoLocal contactInfo,
    CreditCardLocal creditCard, ProfileLocal profile) throws CreateException 
    { 
    	try {
        InitialContext ic = new InitialContext();
        AccountLocalHome alh = (AccountLocalHome) ic.lookup(JNDINames.ACCOUNT);
        AccountLocal account = alh.create(userId,AccountLocalHome.Active,contactInfo,creditCard);
        setAccount(account);
        
        setProfile(profile);
        } catch (NamingException ne) {
            throw new CreateException ("could not lookup ejb. Exception is " + ne.getMessage());
        }


    }
    
    /**
     * @J2EE_METHOD  --  ejbActivate
     * A container invokes this method when the instance is taken out of the pool of available
     * instances to become associated with a specific EJB object. This method transitions
     * the instance to the ready state. This method executes in an unspecified transaction
     * context.
     */
    public void ejbActivate    ()  
    { 

    }
    
    /**
     * @J2EE_METHOD  --  ejbPassivate
     * A container invokes this method on an instance before the instance becomes disassociated
     * with a specific EJB object. After this method completes, the container will place
     * the instance into the pool of available instances. This method executes in an unspecified
     * transaction context.
     */
    public void ejbPassivate    ()  
    { 

    }
    
    /**
     * @J2EE_METHOD  --  ejbLoad
     * A container invokes this method to instruct the instance to synchronize its state
     * by loading it from the underlying database. This method always executes in the transaction
     * context determined by the value of the transaction attribute in the deployment descriptor.
     */
    public void ejbLoad    ()  
    { 

    }
    
    /**
     * @J2EE_METHOD  --  ejbStore
     * A container invokes this method to instruct the instance to synchronize its state
     * by storing it to the underlying database. This method always executes in the transaction
     * context determined by the value of the transaction attribute in the deployment descriptor.
     */
    public void ejbStore    ()  
    { 

    }
    
    /**
     * @J2EE_METHOD  --  ejbRemove
     * A container invokes this method before it removes the EJB object that is currently
     * associated with the instance. It is invoked when a client invokes a remove operation
     * on the enterprise Bean's home or remote interface. It transitions the instance from
     * the ready state to the pool of available instances. It is called in the transaction
     * context of the remove operation.
     * @throws javax.ejb.RemoveException
     */
    public void ejbRemove    () throws RemoveException 
    { 

    }
    
    /**
     * @J2EE_METHOD  --  setEntityContext
     * Set the associated entity context. The container invokes this method on an instance
     * after the instance has been created. This method is called in an unspecified transaction
     * context. 
     */
    public void setEntityContext    (EntityContext ctx)  
    { 
		EJB_Context=ctx;
    }
    
    /**
     * @J2EE_METHOD  --  unsetEntityContext
     * Unset the associated entity context. The container calls this method before removing
     * the instance. This is the last method that the container invokes on the instance.
     * The Java garbage collector will  invoke the finalize() method on the instance. It
     * is called in an unspecified transaction context.
     */
    public void unsetEntityContext    ()  
    { 
		EJB_Context=null;
    }
    
    /**
     * @J2EE_METHOD  --  getUserId
     */
    public abstract String getUserId();
    public abstract void setUserId(String userId);
    
    public abstract AccountLocal getAccount();
    public abstract void setAccount(AccountLocal account);
    
    public abstract ProfileLocal getProfile();
    public abstract void setProfile(ProfileLocal profile);


}