File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
The moose likes JSF and the fly likes problem : For input string: Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Java » JSF
Bookmark "problem : For input string: "  "" Watch "problem : For input string: "  "" New topic

problem : For input string: " "

bee fouda

Joined: Mar 20, 2013
Posts: 14

i have a problem that i didn't understand
and i have no idea how to resolved
please i need your help

here is the problem

my Managed bean

my Dao

my html file

Tim Holloway
Saloon Keeper

Joined: Jun 25, 2001
Posts: 17417

I cannot see the total problem - that would be more work than they pay me for - but I did notice 2 things:

1. You should almost always wrap a Collection (List or Array) that is being used as a table model object inside a JSF DataModel object and use that object as the dataTable's value.

2. The "get" method is going to be invoked multiple times (often 5 times or more), so doing a database fetch within the "get" or its sub-routines is not only very expensive in terms of performance, but may actually return inconsistent data in the event that other processes are updating the database at the time.

An IDE is no substitute for an Intelligent Developer.
I agree. Here's the link:
subject: problem : For input string: " "
It's not a secret anymore!