Bamboo Price List
A. Case Introduction: Show details
        
        
        In some case, you need to update other fields when some fields are changed. In the following example, 
        a bamboo shopping page, the blue numbers in the "Available Quantity in shelvs" field indicate "number of 
        items still on the shelves". So the "number of items still on the shelves" will vary when you pick some items
        into shopping cart. This may be a useful feature when the shop is really clouded:
        
        one of major differences between a real shop and a virtual shop is that none can place it into their cart after 
        you place an item into your cart while it happens commonly in a virtual shop. It didn't become a real problem 
        since virtual shops are not that clouded. But it is really bad when it happened: you are told that the items 
        are "out of stock" when you check out but it did allow you "pick" it off the shelf and placed into your cart 
        when you shopped. Then you were so angry and rushed back to the page your picked it up and found it was really
        out then (in those non-frequently-update site you may even still see they are available!).
        
        The feature in the following bamboo shop solves the problem. 
        
        You may want to try following in the bamboo shop:
        

          
click at the checkbox at a row to see the change at the blue number
          
enter or modify a reasonable (less than blue) number in the "Quantity in Cart" column to see the 
change at the blue number          
          
enter a non-reasonable number (larger than blue) in the "Quantity in Cart" column to 
see the change at the blue number          
          
I set the session timeout to a very short period (2 minutes). So select some 
items and wait for about two minutes to see what will happen          
          
 open two browsers (A and B) to see what happen when session timeout:
 
               open A (make some selection and then stop making selection) and then open 
               B one a muniute later and make some selection in both. When time out, 
               after A is reloaded, look at A to see if the item B checked out still out of shelves.               
          
 select a different item in field "Access using"
          
        
        Note: you need to switch away from the modified field in order to see the change of the blue number.
               The "Reset In Shelves" simply "pull" all them items in all the carts back to shelves without notice.
               So you will see something inconsistent when someone click the button.
        


    
B. Techical Introduction (issues/solutions/source codes): Show details
        
        

        
Techical Details
        
        


    

Bamboo Price List
Access using
Spring MVC/JDBC standard callJSON RPC/JDBC
Reset In Shelves