I've created a new
project which shows how to use
a very powerful feature in IBM Domino 8.5.3. The project contains samples
demonstrating how to create threads and Eclipse jobs from XPages to run
longer taking operations asynchronously without blocking the XPages user
interface or to run scheduled tasks.
Watch this video
to see the sample in action (video has no tone).
An example is a task that checks on
a scheduled basis for new messages in mailboxes, databases, social networks
like Facebook and Twitter, etc. Server side code of an XPages application
can then get the latest messages simply by reading the cached information
from the task.
All samples in this project use a new
feature in Domino 8.5.3. com.ibm.domino.xsp.module.nsf.SessionCloner can
be used to clone a Domino session of the currently authenticated user.
This allows developing threads that run on behalf of a specific user which
can use the Domino Java APIs even after the user's HTTP session has expired.
com.ibm.domino.xsp.module.nsf.ThreadSessionExecutor which leverages SessionCloner
adds additional convenience functionality to set context like the current
database, it handles session timeouts, etc.
The Eclipse
jobs framework is a powerful framework
used by Eclipse rich client developers. Eclipse jobs are essentially threads
plus extra functionality like scheduling, progress monitoring, pooling
etc. The XPages runtime supports these Eclipse jobs also server side since
the necessary plugin comes with the XPages runtime similarly to the OSGi
core framework.
In order to run the samples Domino 8.5.3
is needed. The extension library or upgrade pack 1 is only needed to check
and display progress in an XPage via the xe:jsonRpcService control.
The Java code for threads and jobs can
either be run in a NSF or as plugin. If run in a NSF the java.policy file
needs to be changed to grant permissions. For plugins that is not necessary.
Check out the project for more details.
These capabilities are advanced capabilities
in addition to the 8.5.3 synchronization improvements as mentioned in Karsten
Lehmann's blog:
From Phil Riand: "Synchronization
no longer happens on the session itself, but on the page instance. In
short, it can now execute 2 different page instances at the same time,
while it locks for postback calls to the same page instance and execute
them sequentially."
From Karsten: "there will be a
new database property called xsp.session.transient. This flag means that
unique session objects will be created per request to the server and discarded
right after the request ended. This is a first attempt to provide session
less mode. If you use this option, then you can create one database with
all the services and no synchronization will happen, as each request will
have its own session object."
On OpenNTF: Xpages Document Properties
Wed, Jun 19th 2013 12:24a Niklas Heidloff As part of the XPages
development contest sponsored
by WebGate
Consulting AG which is part of
the Appathon
sponsored by IBM
developerWorks, Ferry Kranenburg
has contributed a project called Xpages
Document Properties. Below is
Ferry's description.
"Xpages Document properties is
a custom Dojo widget that shows document properties just like Document
Property Viewer and xProperties. This control is completely build from
the client side by using a custom Dojo widget. Because of th [read] Keywords: ibm
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GeoJSON Map XPages Control to display geographical Information via Google Maps
Tue, Jun 18th 2013 6:06a Niklas Heidloff As part of the XPages
development contest sponsored
by WebGate
Consulting AG which is part of
the Appathon
sponsored by IBM
developerWorks, Kateryna Czerniachowska
and Grzegorz Pawlak have contributed a project called GeoJSON
Map.
The project contains a custom control
that displays geographical information via Google Maps. It reads the data
from Notes views and supports various shapes: Point, MultiPoint, LineString,
MultiLineString, Polygon, Polygon with hole, MultiPolygon.
[read] Keywords: ibm
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IBM developerWorks wants to hear from you
Fri, Jun 14th 2013 7:46a Bruce Elgort IBM developerWorks has launched the developerWorks LIVE Jam which
runs from June 11-18. Here you as a professional developer can give the
developerWorks team your thoughts on how you prefer to learn technical
skills, share your expertise, and build your online reputation. You can
use your IdeaJam.net registration to participate in the jam. If you are
not already registered you can register
here. [read] Keywords: ibm
ideajam
ideajam.net
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Please join us for this once a year OpenNTF special event - Annual General Meeting
Wed, Jun 12th 2013 7:58a Bruce Elgort On June 27, OpenNTF will host its Annual
General Meeting. This is an opportunity for anyone interested in
the activities and direction of OpenNTF to participate in discussions on
OpenNTF's future.
As the Agenda (published here a few
days ago) shows, there will be reports from the various groups within OpenNTF
– but more importantly, this is the time to ask questions, make suggestions,
and get involved. We will be discussing the upcoming elections for
the Director positions [read] Keywords: openntf
171
T-minus 11 days
Wed, Jun 12th 2013 6:46a Bruce Elgort This is just a quick reminder to tell
all XPages devs out there that the Appathon XPages Dev contest will close
in just 11 days. For those of you with a calendar in front of you that
is June 23. To learn more about the Appathon head on over to the Appathon
landing page to learn about the
prizes that will be awarded. Got questions? Just let us know by leaving
a comment. Good luck and OpenNTF hopes that you will join the contest with
your code contribution. [read] Keywords: xpages openntf
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On OpenNTF: Japanese XPages Extension Library
Wed, Jun 12th 2013 3:10a Niklas Heidloff Over the last six months several developers
have worked on a Japanese version of the XPages
Extension Library. Recently they
released
the 1.0 version after some previous
beta versions.
The project is a joint effort of developers
from IBM (Atsushi Sato, Atsushi Ono, Hiroaki Komine and Tatsuya Sobue)
and developers from IBM business partners: Mitsuru Katoh (IBM Champions
for ICS) from Teamstudio
Japan, Masahiko Miyo (IBM Champions
for ICS) from ef,
Takeshi Yoshida (IBM Champions fo [read] Keywords: domino
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From the OpenNTF IP Manager
Mon, Jun 10th 2013 7:56p Bruce Elgort No, I'm not going to talk about the
endless debate between the fans of copyleft licenses (GPL et al) and the
fans of permissive licenses (Apache/BSD/MIT) – but I am going to mention
a few licenses that are “Bad” in the sense that we do not permit their
use in OpenNTF projects.
The Open Source Initiative is responsible
for approving open
source licenses. There is
quite a range, and some are compatible with others in the sense that you
can use MIT, BSD and Eclipse-l [read] Keywords: policies
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On OpenNTF: Bootstrap UI Template Kit
Mon, Jun 10th 2013 1:23a Niklas Heidloff As part of the XPages
development contest sponsored
by WebGate
Consulting AG which is part of
the Appathon
sponsored by IBM
developerWorks, Oliver Busse has
contributed a project called Bootstrap
UI Template Kit. The project can
be used by developers to easily build applications via the Twitter
Bootstrap framework.
Watch the video
to see the app in action. [read] Keywords: ibm
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IBM Connections Contest has been extended
Thu, Jun 6th 2013 4:34a Niklas Heidloff OpenNTF has extended the deadline for the
submissions of the IBM
Connections App Dev Contest until
November 3rd. This gives developers the chance to work with the new Social
Business Toolkit SDK which has
an updated JavaScript API, new documentation, API snippets and both XPages
and Java support in the Playground. It also allows them to the free
trial of the IBM Collaboration
QuickStart image which is offered by IBM SmartCloud Enterprise. The image
comes with IBM Connections pre-install [read] Keywords: collaboration
connections
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Replay of the Webinar "Getting Started with XPages"
Tue, Jun 4th 2013 10:36p Niklas Heidloff Thanks to everyone who attended our second webinar "Getting Started with XPages". The webinar was well attended and Marky Roden and David Leedy did a great job explaining Domino developers how to get started with XPages.
If you missed it, you can watch the video, listen to the audio or read the slides. [read] Keywords: domino
xpages openntf
