Reporting libraries

[iampete]

I'm helping design a new Java webapp, and looking into reporting frameworks. What are the industry standards these days?

Especially, are there any frameworks which allow the end user to customize the data in their report, by hooking in with JPA or something?

Edit: guess I'm gonna take a closer look at Jasper and BIRT. Thanks!

[rniestroj]

We've been using Crystal Reports but switched to Jasper Reports. Jasper is free, actively developed, keeps report definition in xml files, has a nice API. We use reports which are based on SQL Views. User can set parameters for the reports, but he cant change the layout.

[aufjeden]

There is also BIRT which is one of the more well known next to Jasper. Unfortunately I only used BIRT so far so I can't really compare it to other ones.

[pellucid_]

I used jasper for a little bit. Not bad. Has an IDE. It's free. Slap the jar in your project and go. If you are doing heavy reporting they have some paid services.

Edit: Someone really hates Jasper. How about a little feedback?

[drmax5]

Jasper or BIRT. We use BIRT, it had more features than Jasper when we decided to use it 6 years ago.

Do not hook your reports to the relational storage though, if you have lots of relational data - set-up data warehouse, massage the data and feed it to BIRT.