Questions Tagged With jsf

How to find the root cause of error 500, frequently occuring in the logs

SupportIvyTeam — Mon, 13 May 2019 07:02:36 -0400

Some of users of my wf-app seem to face an error 500 while working. The errors show a viewExpiredException as cause of the problem. Generally this points to a session timeout issue. But as the user fires several request within seconds it doesn't make much sense, that one of the requests should fail with error 500 while others can be served as expected.

Unfortunately the behaviour is not 100% reproducible on any dialog. The logs expose the problem for several users but there is no clear pattern to find out which behaviour leads to these errors. Do I have any chance to isolate the real issue behind these error 500 logs?

Formular is loosing decimal point

SupportIvyTeam — Mon, 30 Apr 2018 04:29:13 -0400

After sending the form, the decimal point is lost. For example, 0,78 becomes 78

This happens whenever I map p:inputNumber to the data type java.lang.Number.

Best practices to reduce the memory that is used by a single Html Dialog?

SupportIvyTeam — Mon, 20 Nov 2017 07:54:54 -0500

We have a huge Html Dialog that uses around 80 MB memory per session on the engine side. The dialog is like a wrapper for the full application. It contains multiple tabs and modal dialogs <p:dialog />.

Why is this Dialog consuming so much memory? Are there any best practices to build lightweight JSF dialogs?

Integrate Axon.ivy workflow front-end in existing Web solution via iFrame

SupportIvyTeam — Fri, 17 Nov 2017 07:23:13 -0500

I'd like to embedd some Axon.ivy workflow screens, such as a tasklist, in my existing WebApplication. My idea was to use an iframe. How can I do this in a secure way?

Can I reduce the session-views that are held in the engine memory?

SupportIvyTeam — Fri, 03 Nov 2017 04:49:22 -0400

The Axon.ivy ivy Engine caches 20 JSF Dialog views per session. As I have a huge dialog with lots of sub-Dialogs this consuming a lot of memory on the Engine. Can I somehow reduce the amount of cached views?

After uploading files we get an OutOfMemoryError: Java heap space

SupportIvyTeam — Wed, 06 May 2015 09:27:30 -0400

We use a the p:fileUpload widget form primefaces with an upload listener like this:

<p:fileUpload fileUploadListener="#{logic.uploadFile}

In the listener method we copy the file content to an byte array on a data class to store it later. The script looks like this:

byte[] content = IOUtils.toByteArray(in.fileUploadEvent.getFile().getInputstream());

But after uploading multiple files we get an OutOfMemoryError: Java heap space

Can I execute child component logic from a parent JSF Dialog

SupportIvyTeam — Mon, 16 Feb 2015 11:31:58 -0500

How can I call a method of a JSF-component dialog from the surrounding parent dialog?

How can I set response headers in JSF?

SupportIvyTeam — Fri, 08 Aug 2014 16:40:14 -0400

How is it possible to set http response headers in JSF? E.g. to set the Cache-Control reponse header to no-cache, no-store.