itembean.java

《J2EE专业项目实例开发》源代码

import java.util.*;
import java.io.*;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;

public class ItemBean
{
private String action;
private int itc;
private String ttl;
private String rt;
private String id;
private String sng;
private String qty;
private String typ;
private String rld;
ItemHome itemHome;
Item item;

public ItemBean()
{

try
{
Context ctx=new InitialContext();
System.out.println("Context has been created created");
Object obj=ctx.lookup("java:comp/env/ejb/Item");

itemHome=(ItemHome)PortableRemoteObject.narrow(obj,ItemHome.class);
}
catch(Exception e)
{
System.out.println("Could not find Item home"+e);
}
reset();
}


public String performAction()
{


String msg="";
try
{
if(action.equals("v1"))
{
System.out.println("If action is update");
item=itemHome.create(itc,ttl,rt,id,sng,qty,typ,rld);
System.out.println("create method called");
msg="Item Inserted";

}

else if(action.equals("v2"))
{


item=itemHome.findByPrimaryKey(itc);

selectItem();
msg="Item displayed";
}

}
catch(Exception e)
{
System.out.println("Cannot find by PK"+e);
}
return msg;
}

public int getItc()
{
return itc;
}

public void setAction(String z)
{

action=z;
}
public String getAction()
{
return action;
}


public void setItc(int i)
{


itc=i;

}

public void setTtl(String t)
{
ttl=t;
}
public void setRt(String r)
{
rt=r;
}
public void setId(String d)
{
id=d;
}
public void setSng(String s)
{
sng=s;
}
public void setQty(String q)
{
qty=q;
}
public void setTyp(String y)
{
typ=y;
}
public void setRld(String l)
{
rld=l;
}


public String getTtl()
{
return ttl;
}
public String getRt()
{
return rt;
}
public String getId()
{
return id;
}
public String getSng()
{
return sng;
}
public String getQty()
{
return qty;
}
public String getTyp()
{
return typ;
}
public String getRld()
{
return rld;
}






private void selectItem()
{
try
{

setTtl(item.gettitle());
setRt(item.getrate());
setId(item.getitemDescription() );
setSng(item.getsinger());
setQty(item.getquantityOnHand());
setTyp(item.gettype());
setRld(item.getreleaseDate());

}
catch(Exception e)
{
System.out.println("Cannot call remote method"+e);
}


}

private void reset()
{
int it=0;

setItc(it);
setTtl(" ");
setRt(" ");
setId(" ");

setSng(" ");
setQty(" ");
 
setTyp(" ");

 setRld(" ");
setAction(" ");


}

}