Martin Pradny's blog

 A user reported a very strange issue - when a document with a date field is saved, it changes the value one day to the past. With every save. But only for some dates, not all. It turned out to be a mystery that goes deep into XPages and Notes/Java APIs. I've posted a sample on OpenNTF Discord and Serdar tried it on his server - no issue. But he uses the GMT zone and I have CET (Windows set to UTC+1 - Amsterdam, Berlin... to be precise). To cut it short, the issue is caused by daylight saving interpretation between Notes and Java. The date fields (because XPages have no notion of real date-only fields) are stored with 00:00 time component and for some dates the conversion back to Java Date resulted in 23:00 on the previous day. XPages that get the date component as String for the input field, which is then saved back as a previous day during document save. The app is full of date fields and I couldn't add custom logic to every save operation, so I tried to fix it at XPages conv...

While doing XPages application performance optimization, I discovered that one of the slowest parts was reading the template version and build date. I've never paid much attention to this code, so it surprised me. 

 We have recently experienced OutOfMemory crashes of XPages app server. The server was recently upgraded to 12.0.1FP1, but we were getting some panic crashes in HTTP even before the upgrade (it was 9.0.1FP10). Our hopes were that the upgrade would stabilize the server, but it's not the case. At least now I start to see what's the problem.  update 8.12.2022 There were actually 3 different leaks. I have rewritten the article to be a bit more clear. I also re-run some of the tests on 9.0.1FP10, so I assume the problems are also in earlier versions. Problem 1 The server is hosting over 1000 NSF sharing the same design + some other custom apps. Not all NSFs are used via web as the app still has classic Notes UI in parallel, so it's a bit tricky to estimate the load. By using tell http xsp show modules I usually see around 350 NSFs active. We kept the default application timeout that should provide reasonable application recycling if it's not used continuously.  We started to...

 I haven't published my recap after Engage this year and the recent HCL Factory tour in Milan is a great opportunity to write a summary about what's happening in HCL (mostly Domino) space. It's a mix of news about 12.0.2, future directions, and my impressions, so it can be a bit chaotic, but I got the impression that many people see it similarly.  Engage 2022 Engage 2022 was great (as always). I love the atmosphere in Brudges. I visited it once after Engage a few years ago and I was happy to come back. This was also the first time I had the opportunity to speak at Engage, which obviously made it a bit more stressful, but also more fun. Together with Domino Jams, HCL continued conversations with customers and partners about the future of their products at Engage. Many of these ideas were now discussed in greater detail in Milan, some of them were even demoed.  My main takeaways from Engage were: Nomad (web and mobile) are a great addition to Notes family Restyle is a great...

 This post is long overdue. I originally planned to write it to document the issues and solutions while working on the app, but as the problems kept appearing I wanted to make sure that I have all the answers. Now I know that I probably won't have them in the near future as I'm seeing new issues even after having the app in production for some time.  The project was about a webization of an existing app that served well in Notes client UI for many years. It's a classic support/helpdesk app that once used to be a great example of Notes flexibility and integration of mail functions with app code. After all the mail database was just another app using the same APIs (mostly). Unfortunately, this is not the case for XPages as iNotes or Verse has nothing in common with XPages, so the APIs are not battle-tested for all the scenarios. I remember doing a similar project during the early days of XPages and I must admit that it was more painful, but mostly due to a lack of community ...

 2021 is here. I hope this year will be full of better things and our lives will get to normal, where we can travel and meet each other again. For me, it started in quarantine, but all tests were negative. Another change was that I'm HCL Ambassador for the very first time in 2021. I hope it will force me to blog and speak even more about HCL products, especially about all the goodies in V12 and beyond.  Last year, I've done a few tests of the new transaction methods. HCL checked my issues, so now it was my turn to do a few more tests. Problem with view access after a document save In Test 4 of my initial tests, I've found that you can no longer access views after you save a document. The problem seems to be deeper in the Domino code, so for now you must disable autoupdate on the view object.  This, of course, means that you will not get up-to-date result, because you'll work with the old view index. An interesting fact is, that the view index is not updated even when ...

 Domino V12 EAP contains new methods to manage code transactions. The underlying C API has been there for quite some time, but I've never really looked at it. Now it's finally official and you will be able to leverage these new features in your apps. The EAP program is currently only shipped as a Docker container, which makes the testing a bit hard - you don't have Domino Designer or easy access to the JVM. The only ways to test the APIs that I could think of were: Try to import the code using DXL on the server - should work for LotusScript Try server-side XPages compilation, e.g. using Jesse's NSF ODP Tooling Build a jar file locally using V12 Notes.jar and reuse that The last option seemed to be the easiest one and before I had a chance to try it, Ulrich Krause has used that in his test with Java server addin -  https://www.eknori.de/2020-11-01/testing-new-database-methods-in-domino-v12-early-access-without-domino-designer-v12/ I wanted to have something more interact...

In my previous post I've shown how to quickly start coding with Domino AppDev Pack Java API. I used an insecure connection to avoid dealing with certificates, now it's time to fix this. If you are testing the new Java API, which is marked as a preview, you probably enjoy living on the edge and may also have a V12 EAP Domino server somewhere. This may help us see how the future may look. Domino AppDev Pack series: 1.  First Java API 2. Certificates (this) 3. Kotlin REST API The AppDev Pack distribution contains sample files that generate ca, certificates and kyr file using openssl, but this is a one-time operation that is pretty hard to repeat or even use in production. If you want to use this in production, you should use a proper certificate authority. Last week Daniel Nashed posted info about nice enhancements coming to V12 that can help us here Domino V12 ACME for company CAs using smallstep  and  Easy kyr file creation with Early Access V12 in production . smallstep ...