Hi,

we got a message from a legal department that says we can't use Richfaces because there's a licensing conflict.

They say that Richfaces which is licensed under LGPL V2.1 uses Xalan which is licensed under the Apache license. And that isn't allowed.

Here's the part of the LGPL that poses the restriction:

10. Each time you redistribute the Library (or any work based on the Library), the recipient automatically receives a license from the original licensor to copy, distribute, link with or modify the Library subject to these terms and conditions. You may not impose any further restrictions on the recipients' exercise of the rights granted herein. You are not responsible for enforcing compliance by third parties with this License.

And here's the part of the Apache V2.0 license that should be a conflict:

3. Grant of Patent License. Subject to the terms and conditions of       this License, each Contributor hereby grants to You a perpetual,       worldwide, non-exclusive, no-charge, royalty-free, irrevocable       (except as stated in this section) patent license to make, have made,       use, offer to sell, sell, import, and otherwise transfer the Work,       where such license applies only to those patent claims licensable       by such Contributor that are necessarily infringed by their       Contribution(s) alone or by combination of their Contribution(s)       with the Work to which such Contribution(s) was submitted. If You       institute patent litigation against any entity (including a       cross-claim or counterclaim in a lawsuit) alleging that the Work       or a Contribution incorporated within the Work constitutes direct       or contributory patent infringement, then any patent licenses       granted to You under this License for that Work shall terminate       as of the date such litigation is filed.

Does anyone have experience with that topic?

Cheers,

Helmut