displayinventorybean.java

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/*
 * Copyright 2002 Sun Microsystems, Inc. All rights reserved.
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package com.sun.j2ee.blueprints.supplier.inventory.web;

import java.util.Collection;

import javax.naming.InitialContext;
import javax.naming.NamingException;

import javax.ejb.FinderException;

import com.sun.j2ee.blueprints.supplier.inventory.ejb.InventoryLocal;
import com.sun.j2ee.blueprints.supplier.inventory.ejb.InventoryLocalHome;

import com.sun.j2ee.blueprints.supplier.inventory.web.JNDINames;

import com.sun.j2ee.blueprints.servicelocator.ejb.ServiceLocator;
import  com.sun.j2ee.blueprints.servicelocator.ServiceLocatorException;

/**
 * This class has an accessor method that allows the "receiver" application
 * obtain all inventory items along with their current quantity. This is to
 * enable the receiver application to display the items and get them quantity
 * updated
 */

public class DisplayInventoryBean {

    private InventoryLocalHome inventoryHomeRef = null;

    public DisplayInventoryBean() {}

    /**
     * This method gets a list of the current items in the inventory along
     * with the current quantity
     * @return <Code>Collection</Code> of Items and their quantitites
     */
    public Collection getInventory() {
        Collection invColl = null;

        try {
            if(inventoryHomeRef == null) {
                ServiceLocator serviceLocator = new ServiceLocator();
                inventoryHomeRef = (InventoryLocalHome)
                             serviceLocator.getLocalHome(JNDINames.INV_EJB);
            }
            invColl = inventoryHomeRef.findAllInventoryItems();
        } catch(ServiceLocatorException ne) {
            ne.printStackTrace();
        } catch(FinderException fe) {
            fe.printStackTrace();
        }
        return invColl;
    }
}