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• django: can't adapt error when importing data from postgres database

  - by Oleg Tarasenko

  Hi, I'm having strange error with installing fixture from dumped data. I am using psycopg2, and django1.1.1 silver:probsbox oleg$ python manage.py loaddata /Users/oleg/probs.json Installing json fixture '/Users/oleg/probs' from '/Users/oleg/probs'. Problem installing fixture '/Users/oleg/probs.json': Traceback (most recent call last): File "/opt/local/lib/python2.5/site-packages/django/core/management/commands/loaddata.py", line 153, in handle obj.save() File "/opt/local/lib/python2.5/site-packages/django/core/serializers/base.py", line 163, in save models.Model.save_base(self.object, raw=True) File "/opt/local/lib/python2.5/site-packages/django/db/models/base.py", line 495, in save_base result = manager._insert(values, return_id=update_pk) File "/opt/local/lib/python2.5/site-packages/django/db/models/manager.py", line 177, in _insert return insert_query(self.model, values, **kwargs) File "/opt/local/lib/python2.5/site-packages/django/db/models/query.py", line 1087, in insert_query return query.execute_sql(return_id) File "/opt/local/lib/python2.5/site-packages/django/db/models/sql/subqueries.py", line 320, in execute_sql cursor = super(InsertQuery, self).execute_sql(None) File "/opt/local/lib/python2.5/site-packages/django/db/models/sql/query.py", line 2369, in execute_sql cursor.execute(sql, params) File "/opt/local/lib/python2.5/site-packages/django/db/backends/util.py", line 19, in execute return self.cursor.execute(sql, params) ProgrammingError: can't adapt First I've checked similar issues on internet. This one seemed to be very related: http://code.djangoproject.com/ticket/5996, as my data has many non ASCII symbols But actually I've checked my django installation and it's ok there Could you advice what is wrong

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• siteground hosting forwarding

  - by Oleg Videnov

  I would like to ask (maybe simple) question for you. I have a website which is called let's say www.website1.com on different hosting provider(siteground) I have www.website2.com Now,www.website1.com is the old website and the boss wants .. IF someone clicks on www.website1.com/user/content/1, he/she should be redirected to www.website2.com/user/content/1 ,but the url should REMAIN www.website1.com/user/content/1 and the same thing for all the pages. If someone have an answer how to do it,it would be much appreciated. Thanks in advance! Oleg Videnov

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• Mathematica 8 crashes Ubuntu 13.10

  - by Georgy Ivanov

  I have Mathematica 8 installed on my Ubuntu laptop since 2011. I updated Ubuntu several times, and experienced no problems with Mathematica. It also worked smoothly after I updated Ubuntu to 13.10 (it worked for sure for a week after update). When I tried to start Mathematica today by executing a .sh-file, the screen went black, I was logged out from the session and thrown back to the login screen. Typing mathematica in the terminal produced the same effect. Typing mathematica -cleanstart or mathematica -mesa did not help. Starting Gnome session with or without effects did not help Launching mathematica under another user account did not help. I still can run text-only version of mathematica by typing math in the terminal. I don't remember making any changes to my configuration except for installing updates. Is there any quick way to fix this behavior? How can I know which component exactly crashed? Where should I look for crash logs?

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• Upgrading in java web development

  - by Vladimir Ivanov

  I'm a java web developer for nearly 3 years. Always trying to learn more and be better but still I feel that the amount of knowledge is not that good as I want. The knowledge in some places still seems to be non-systematic and don't provide a very strong base to solve the problems as good as I want to do it. The example I have is my senior developer, whose solutions are always more efficient and beautiful. So, the question is rather simple and hard the same time. What is the right way to get my knowlege be more systematic and therefore improve it's quality. I understand that there is no practically good answer for the all java programming, so let's focus on the modern java web or nearly web technologies: JSF 2.0 JPA2 and Hibernate as persistence provider Web services and Java SE as a core. What methodologies or books or learning technics lead to the strong knowledge base within the given knowledge area?

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• clicktale.com alternative that works with https and ajax

  - by Alexey Ivanov

  I need to record user's actions on site for analytics purposes. The way clicktale.com doing it is just fine. But unfortunately it have problems with working over https and recording ajax events. Is there some service or script/library that I can host that can do this task? Non-free one's are ok to. Clarification: ClickTale function that I want to reproduce is recording of separate user sessions and their replay. So you can see video of all user's interactions with page: There he clicks first, which links opens, etc. Usually such services replay user's actions buy reproducing them with javascript (and here comes ajax problem: external sites can't use ajax because of cross-domain scripting). So I'm looking for a tool (possibly script that I host on site to allow cross-domain scripting) that can record ajax blocks actions.

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• OVM Templates: Oracle Solaris Container with Oracle Database 11gR2

  - by Roman Ivanov

  I am delighted to inform you that Oracle just made available new Oracle Solaris Virtual Machine (VM) Templates: Oracle Solaris Container with Oracle Database 11gR2. This VM Templates available for SPARC and x86 platforms. Both Oracle VM Templates based on encapsulating an Oracle Solaris 10 Container which can then be attached to SPARC or x86 system running Oracle Solaris 10 10/09 or later. Make sure your select correct SPARC or x86 platform. The download includes Oracle Solaris 10 10/09 Container Oracle Database 11gR2 pre-installed in the Container.

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• Increasing traffic for music blog

  - by Wladimir Ivanov

  I own a music blog with some articles and of course youtube iframes and mp3 listening plugins. I get traffic from google and some not very popular site (I don't mention it because you can think it's a SPAM) where I post links with pictures to my posts. Any ideas to get more traffic for this kind of blog? I know about Myspace, blog directories, video sharing sites, same niche blogs and relevant forums. Anything I'm missing? Thanks in advance

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• How to change file managers "files" icon to nice "nautilus shell" icon in Ubuntu 12.04?

  - by Ivan Ivanov

  I've attached Nautilus to Unity launcher in Ubuntu 12.04. In Ubuntu 12.04 the default "Files" icon for Nautilus file manager is not as pretty as a "Nautilus Shell" icon. But when I search in Dash for Nautilus it gives "Files" link to Nautilus, which has grey and quite plain file-cabinet icon. How do I change this grey file cabinet icon to the Nautilus' shell icon, which suits well to my icon theme?

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• Blogger widgets speed problem

  - by Wladimir Ivanov

  Recently I installed Google Analytics on a Blogger account. I was shocked when I saw load times for the landing pages between 10 and 60 seconds. The blog uses Facebook like-box, twitter recent messages box, live traffic feed widget and Lockerz share buttons. Almost every post in this blog contains YouTube iframes which aren't nowhere near fast. Are there any well-known solutions for this type of problems? Should I use some jQuery plugins for speed optimization, how can I make the facebook/twitter boxes load faster?

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• Google Adsense threshold estimation

  - by Wladimir Ivanov

  I've an electronic music blog with traffic mainly from the North American continent, Western Europe and Russia. Daily I get about 100 unique visitors with 150-200 pageviews. Should I start Adsense or I need to work to increase the traffic stats. Can you suggest another appropriate monetizing option for the given case? How much time It would take me to hit the 100$ Adsense barrier with the given traffic statistics? Thanks in advance.

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• Digg alternatives for blog and unpopular users? [closed]

  - by Wladimir Ivanov

  all. I'm struggling to build an [B]audience[/B] for [B]electronic blog[/B] . The blog is relatively new and has around 30 pages. The unique visitors I get are approximately [B]120 - daily[/B]. I know about directories, rss, comments and guest blogging, but is there other more effective strategy to build some quality audience? As I see nowadays there aren't enough materials in my country about this. What about digg and reddit? Everytime I post some link there: no traffic comes to me. Can you suggest me other digg/reddit/stumbleupon tactics to get followers or there are similar sites which would tend to give me some serious traffic. Can you suggest sites appropriate for linking to music blog? Best regards.

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• Space-efficient data structures for broad-phase collision detection

  - by Marian Ivanov

  As far as I know, these are three types of data structures that can be used for collision detection broadphase: Unsorted arrays: Check every object againist every object - O(n^2) time; O(log n) space. It's so slow, it's useless if n isn't really small. for (i=1;i<objects;i++){ for(j=0;j<i;j++) narrowPhase(i,j); }; Sorted arrays: Sort the objects, so that you get O(n^(2-1/k)) for k dimensions O(n^1.5) for 2d and O(n^1.67) for 3d and O(n) space. Assuming the space is 2D and sortedArray is sorted so that if the object begins in sortedArray[i] and another object ends at sortedArray[i-1]; they don't collide Heaps of stacks: Divide the objects between a heap of stacks, so that you only have to check the bucket, its children and its parents - O(n log n) time, but O(n^2) space. This is probably the most frequently used approach. Is there a way of having O(n log n) time with less space? When is it more efficient to use sorted arrays over heaps and vice versa?

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• Narrow-phase collision detection algorithms

  - by Marian Ivanov

  There are three phases of collision detection. Broadphase: It loops between all objecs that can interact, false positives are allowed, if it would speed up the loop. Narrowphase: Determines whether they collide, and sometimes, how, no false positives Resolution: Resolves the collision. The question I'm asking is about the narrowphase. There are multiple algorithms, differing in complexity and accuracy. Hitbox intersection: This is an a-posteriori algorithm, that has the lowest complexity, but also isn't too accurate, Color intersection: Hitbox intersection for each pixel, a-posteriori, pixel-perfect, not accuratee in regards to time, higher complexity Separating axis theorem: This is used more often, accurate for triangles, however, a-posteriori, as it can't find the edge, when taking last frame in account, it's more stable Linear raycasting: A-priori algorithm, useful for semi-realistic-looking physics, finds the intersection point, even more accurate than SAT, but with more complexity Spline interpolation: A-priori, even more accurate than linear rays, even more coplexity. There are probably many more that I've forgot about. The question is, in when is it better to use SAT, when rays, when splines, and whether there is anything better.

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• Make blogger load faster

  - by Wladimir Ivanov

  all. I use blogger as a platform for electronic music blog. Because of the thematics of the blog I embed many iframes (Youtube & Soundcloud). Of course this makes the articles to load slow. Almost each article on this blog consists of some text and many iframes below. What should I do in this particular case in order to make the articles (pages) load faster. Is there any available solution or I should use some jquery like lazy load to load iframes once the scroller reaches them? Any help is greatly appreciated.

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• Collision detection code style

  - by Marian Ivanov

  Not only there are two useful broad-phase algorithms and a lot of useful narrowphase algorithms, there are also multiple code styles. Arrays vs. calling Make an array of broadphase checks, then filter them with narrowphase checks, then resolve them. function resolveCollisions(thingyStructure * a,thingyStructure * b,int index){ possibleCollisions = getPossibleCollisions(b,a->get(index)); for(i=0; i<possibleCollitionsNumber; i++){ if(narrowphase(possibleCollisions[i],a[index])) { collisions->push(possibleCollisions[i]); }; }; for(i=0; i<collitionsNumber; i++){ //CODE FOR RESOLUTION }; }; Make the broadphase call the narrowphase, and the narrowphase call the resolution function resolveCollisions(thingyStructure * a,thingyStructure * b,int index){ broadphase(b,a->get(index)); }; function broadphase(thingy * with, thingy * what){ while(blah){ //blahcode narrowphase(what,collidingThing); }; }; Events vs. in-the-loop Fire an event. This abstracts the check away, but it's trickier to make an equal interaction. a[index] -> collisionEvent(eventdata); //much later int collisionEvent(eventdata){ //resolution gets here } Resolve the collision inside the loop. This glues narrowphase and resolution into one layer. if(narrowphase(possibleCollisions[i],a[index])) { //CODE GOES HERE }; The questions are: Which of the first two is better, and how am I supposed to make a zero-sum Newtonian interaction under B1.

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• Social media exchange strategies

  - by Wladimir Ivanov

  Recently I've stumbled upon some [B]facebook/twitter/g+[/B] and other social site [B]tools[/B] which offer [B]like for like[/B]. As I know from personal experimenting following certain people/pages on twitter also gives you followers. What's your opinion on this type of social media exchange (I know the fans/followers you get are only number which couldn't help much with growing your site)? Which of these sites are proven to boost some statistics? Are there other better exchange tactics? Thanks in advance.

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• ??????????????? ?????? ? ?????????? ??????? IPS ? Solaris 11

  - by Roman Ivanov

  ? ???? ?? ???????? ????? Solaris 11 ? ?? ??? ? ????????? ????? ? ???? ??? ???? ????? ????????? ??? ?????????? ???????? Oracle VM Server for SPARC (aka LDoms). ???? ?? Python/GTK/NetBeans. ?? ?? ??? ???????. ??????? ? ???, ??? ??? ???????????? ????? ? ??????? ????? pylibssh2 ??? ????, ????? ???????????? ?? python ?? ssh ? ????????? ??????.???????? ?? ????? ???????? pylibssh2 ? libssh2, ??????? ? ?????????. ?? ? ???????, ????? ??? ?????? ???? ????????? ? ???? ??????? Solaris IPS. ?????? ? ????? ? ????????? ???????? ??????.????? ?????????, ? ?? ??????? ?????????? ?? ???????????? ? ?????????. ? ???? ????, ??? ????? ????????? configure ? make ??? ??????? ? README ;)???????????? ??????? ????? ???????? ??? ?? ???????????? LD_LIBRARY_PATH. ??? ????? ?? ? ???? ?????? ?? ??????????? ?? ? /etc/profile.? ?? ???? ????? ???????? ????????? ?????? ???. ?? ???????? ????? ?????????? ? ???? ? ?? ?????? ? ????? ?????. ??????????, ???? ???????????? ? ? ????????.????, ??? 0. ????????? ??????????? ? ???? ????? ??????? ??????????. ??? ????? ???????????, ????? ??????? ? ? ???? ???????, ????? ????? ???? ???????? ?????? ?????? ????????. # zfs create rpool/export/repo # zfs set atime=off rpool/export/repo # chown roivanov:staff /export/repo $ pkgrepo create /export/repo $ pkgrepo set -s /export/repo publisher/prefix=tools # pkg set-publisher -g /export/repo tools??? 1, ???????? ?????. ??? ?????? ??????? ? ????????? ? $HOME/Projects/IPS/<??? ??????>, ?? ??? ?? ?????????????. ????? ????, ??? ?????? ??????? ?????? ? ???????? ????????? ????????, ????? ?? ???????????? ????????? ?????????. ??? ?????? ??? ?????????? SunStudio cc ??? gcc. $ export PKGREPO=/export/repo $ mkdir -p $HOME/Projects/IPS/libssh2 $ cd $HOME/Projects/IPS/libssh2 $ export PKGROOT=`pwd` $ unset LDFLAGS $ PATH=$PATH:/opt/solarisstudio12.3/bin $ export CC=cc??? $ export CC=gcc?? ????? ?????? ?????? ?????????? ?????????? (??????????????) ????? ? ../root ?????? /usr $ export DESTDIR=$PKGROOT/root? ????????? ?????????? ../root ? ???? ?????????? ????????? ?????. ????????????? ??????????? ????? ? /usr. $ [ -d root ] && rm -rf root $ cp ~/??????????/libssh2-1.4.2.tar.gz . $ tar xzf libssh2-1.4.2.tar.gz $ cd libssh2-1.4.2? ??????, ???? ????? ?????????? ?????????? ?? /usr/local/lib, ????????????? LDFLAGS ? _????????_ ??? LD_LIBRARY_PATH $ export LDFLAGS="-L/usr/local/lib -R/usr/local/lib" $ ./configure $ gmake && gmake install $ cd ..?????? ?????? Python (pylibssh2) ???????????? ????????? ????? $ python setup.py install --root=../root??? 2. ??????? ???? ? ????????? ?????? $ cat > MANIFEST.files.mog << EOF set name=pkg.fmri value=library/[email protected],0.5.11-11 set name=pkg.description \     value="libssh2 is a client-side C library implementing the SSH2 protocol" set name=pkg.summary value="libssh2 library" set name=maintainer value="First Last <[email protected]>" set name=info.upstream-url value=http://www.libssh2.org/ set name=variant.arch value=$(ARCH) license ../libssh2-1.4.2/COPYING license=BSD <transform dir path=usr$ -> edit group bin sys> EOF ???: library/libssh2 ??? ???????? ??????, 1.4.2 ?????? ??????, 0.5.11 ?????, 11 ????? ?????? ??????. description ??? ????????, ? summary ??? ???????? ???????? ??????. variant.arch ??? ????? ????????? ?????? ?????. ???? ??????????? ? ????? ?????? ????? ????? ??? ?????????? ????????, ?? ??? ? ?????? ???? ?? ????. license ???? ? ??? ???????? transform ????????? ??? ????, ????? ? ????????????? ????? ?????? ???? ????????? ?????????? ?????? ????????? ?????????? /usr ???????? ?????? ?????? ?????? $ pkgsend generate root > MANIFEST.files.1 ????????? ?????????? ?? ????? ???????? ? ?????????? ??????????? ????????? $ pkgmogrify -DARCH=`uname -p` MANIFEST.files.1 MANIFEST.files.mog > MANIFEST.files.2 ??????? ?????? ???? ???????????? $ pkgdepend generate -md root MANIFEST.files.2 | pkgfmt > MANIFEST.files.3 ????????? ?????? ???????? ???????????? ? ?????? ???????. ???? ???? ?????? ????????? ?????. $ pkgdepend resolve -m MANIFEST.files.3 ?? ?????? ???????? ??????? ???? MANIFEST.files.3.res ? ????????? ??????.??? ??????? ????? ????????? ???? ???? ?? ??????? ?????????? ? ?????????? ?????????????,?????? ??? ????? ????? ???????????? ???????????. $ pkglint -c ../lint-cache -r http://pkg.oracle.com/solaris/release/ MANIFEST.files.3.res $ pkglint -c ../lint-cache-local -r /export/repo MANIFEST.files.3.res ? ??????????, ????????? ????? $ pkgsend publish -s $PKGREPO -d `pwd`/root MANIFEST.files.3.res ????????? ?????? ? ?????????? ????????????????? ?????????? ????? ?????? ???? ??????????? $ pkgrepo list -s /export/repo/ ????? ??????? ?????????? ????? ?? ??????????? $ pkgrepo remove -s /export/repo/ [email protected],0.5.11-8:* ????? ?????????? ?????????? ? ?????? ? ??????????? $ pkg info -r libssh2 ????? ?????????? ??? ?????? ?????????, ??? ???????? ????????? ?????? $ sudo pkg install -nv libssh2 ????? ?????????? ????? $ sudo pkg install libssh2 ????? ???????? ????? $ sudo pkg refresh $ sudo pkg update ?????? ??????:[1] How to Create and Publish Packages to an IPS Repository on Oracle Solaris 11,http://www.oracle.com/technetwork/articles/servers-storage-admin/o11-097-create-pkg-ips-524496.html[2] Publishing your own packages with IPS - getting started.https://blogs.oracle.com/barts/entry/publishing_your_own_packages_with[3] How to create your own IPS packages (Ghost Busting)http://blogs.oracle.com/cwb/entry/how_to_create_your_own[4] Introduction to IPS for Developershttp://www.oracle.com/technetwork/systems/hands-on-labs/introduction-to-ips-1534596.html

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• GNOME lock screen (screensaver) is missing music controls

  - by oleg

  I have a custom Ubuntu 12.10 configuration (started out as a minimal installation of Ubuntu 12.04 with a number of other packages such as Gnome Shell selectively installed via apt-get and then upgraded to 12.10). (Almost) everything works just fine. However, the lock screen (Gnome screensaver) does not expose a UI to control music playback. Whenever I have Rhythmbox running in the background I cannot pause music playback without unlocking the screen. Obviously some package(s) or configuration bits are not present but I am not able to figure out what needs to be added or done in order to enable playback control in the lock screen. Any idea what I might be missing? Ideally I would not like to install Ubuntu desktop only to get music controls in the Gnome lock screen.

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• Java Spotlight Episode 35: JVM Performance and Quality

  - by Roger Brinkley

  Tweet Interview with Vladimir Ivanov, Ivan Krylov, Sergey Kuksenko on the JDK 7 Java Virtual Machine performance and quality. Joining us this week on the Java All Star Developer Panel are Dalibor Topic, Java Free and Open Source Software Ambassador, and Alexis Moussine-Pouchkine, Java EE Developer Advocate. Right-click or Control-click to download this MP3 file. You can also subscribe to the Java Spotlight Podcast Feed to get the latest podcast automatically. If you use iTunes you can open iTunes and subscribe with this link: Java Spotlight Podcast in iTunes. Show Notes News Java 7 Launch Event GlassFish 3.1.1 re-planning done, first RC on July 7th, lots of component updates following customer and community feedback Mojarra 2.1.2 is here, just a little ahead of the GlassFish 3.1.1 release. In other JSF-related news, JSF 2.0 has a first expert draft New OpenJDK Project proposed: JDK 7 Update Events June 20-23 JAX, San Jose, CA June 21 Java + MySQL Webinar at 9:00 AM PDT June 21-23 JaZoon, Zurich, Switzerland June 22nd and 28th GlassFish Webinars (one in Portuguese) June 29-July 2 12th Forum Internatioal Software Livre, Porto Alegre, Brazil July 3, Sao Jose do Rio Preto, Brazil July 5, Brasilia, Brazil (DFJUG) July 6, Goiania, Brazil (GOJava) July 6-10 The Developers Conference, Sao Paulo, Brazil July 7 Java 7 Launch Event live in Redwood Shores, CA; Sao Paulo, BR; London, England. July 9, Joao Pessoa, Brazil (PBJUG) July 11, Natal, Brazil (JavaRN) July 14, Fortaleza, Brazil (CEJUG) July 16, Salvador, Brazil (JavaBahia) July 19, Toledo, Brazil (UNIPAR) July 21, Maringa, Brazil (RedFoot) Feature interview This weeks feature interview is with Vladimir Ivanov, HotSpot JVM Quality Engingeer;  Ivan Krylov, Licensee Engineering;  and Sergey Kuksenko, Java SE Performance Team on the JDK 7 Java Virtual Machine peformance and quality. What's Cool Ongoing OpenJDK Bylaws ratification results Show Transcripts Transcript for this show is available here when available

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• Blog Buzz - Devoxx 2011

  - by Janice J. Heiss

  Some day I will make it to Devoxx – for now, I’m content to vicariously follow the blogs of attendees and pick up on what’s happening.  I’ve been doing more blog "fishing," looking for the best commentary on 2011 Devoxx. There’s plenty of food for thought – and the ideas are not half-baked.The bloggers are out in full, offering useful summaries and commentary on Devoxx goings-on.Constantin Partac, a Java developer and a member of Transylvania JUG, a community from Cluj-Napoca/Romania, offers an excellent summary of the Devoxx keynotes. Here’s a sample:“Oracle Opening Keynote and JDK 7, 8, and 9 Presentation•    Oracle is committed to Java and wants to provide support for it on any device.•    JSE 7 for Mac will be released next week.•    Oracle would like Java developers to be involved in JCP, to adopt a JSR and to attend local JUG meetings.•    JEE 7 will be released next year.•    JEE 7 is focused on cloud integration, some of the features are already implemented in glassfish 4 development branch.•    JSE 8 will be release in summer of 2013 due to “enterprise community request” as they can not keep the pace with an 18    month release cycle.•    The main features included in JSE8 are lambda support, project Jigsaw, new Date/Time API, project Coin++ and adding   support for sensors. JSE 9 probably will focus on some of these features:1.    self tuning JVM2.    improved native language integration3.    processing enhancement for big data4.    reification (adding runtime class type info for generic types)5.    unification of primitive and corresponding object classes6.    meta-object protocol in order to use type and methods define in other JVM languages7.    multi-tenancy8.    JVM resource management” Thanks Constantin! Ivan St. Ivanov, of SAP Labs Bulgaria, also commented on the keynotes with a different focus.  He summarizes Henrik Stahl’s look ahead to Java SE 8 and JavaFX 3.0; Cameron Purdy on Java EE and the cloud; celebrated Java Champion Josh Bloch on what’s good and bad about Java; Mark Reinhold’s quick look ahead to Java SE 9; and Brian Goetz on lambdas and default methods in Java SE 8. Here’s St. Ivanov’s account of Josh Bloch’s comments on the pluses of Java:“He started with the virtues of the platform. To name a few:    Tightly specified language primitives and evaluation order – int is always 32 bits and operations are executed always from left  to right, without compilers messing around    Dynamic linking – when you change a class, you need to recompile and rebuild just the jar that has it and not the whole application    Syntax  similarity with C/C++ – most existing developers at that time felt like at home    Object orientations – it was cool at that time as well as functional programming is today    It was statically typed language – helps in faster runtime, better IDE support, etc.    No operator overloading – well, I’m not sure why it is good. Scala has it for example and that’s why it is far better for defining DSLs. But I will not argue with Josh.”It’s worth checking out St. Ivanov’s summary of Bloch’s views on what’s not so great about Java as well. What's Coming in JAX-RS 2.0Marek Potociar, Principal Software Engineer at Oracle and currently specification lead of Java EE RESTful web services API (JAX-RS), blogged on his talk about what's coming in JAX-RS 2.0, scheduled for final release in mid-2012.  Here’s a taste:“Perhaps the most wanted addition to the JAX-RS is the Client API, that would complete the JAX-RS story, that is currently server-side only. In JAX-RS 2.0 we are adding a completely interface-based and fluent client API that blends nicely in with the existing fluent response builder pattern on the server-side. When we started with the client API, the first proposal contained around 30 classes. Thanks to the feedback from our Expert Group we managed to reduce the number of API classes to 14 (2 of them being exceptions)! The resulting is compact while at the same time we still managed to create an API that reflects the method invocation context flow (e.g. once you decide on the target URI and start setting headers on the request, your IDE will not try to offer you a URI setter in the code completion). This is a subtle but very important usability aspect of an API…” Obviously, Devoxx is a great Java conference, one that is hitting this year at a time when much is brewing in the platform and beginning to be anticipated.

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• Windows Backup failed with error 0x807800C5

  - by Alexey Ivanov

  I setup backup of my Windows 8 laptop with Windows 7 File Recovery (known as Backup and Restore in Windows 7). Backup of files runs successfully. But if I try to create system image, it fails with error 0x807800C5: Error details on the dialog: The mounted backup volume is inaccessible. Error details in the system log: There was a failure in preparing the backup image of one of the volumes in the backup set. I save the backup to a network location, WD MyBookLive.   Edit: I tried some of the steps suggested in the various thread about this issue: Cleaned up the backup location: Removed MediaID.bin in the backup location. Removed folder <ComputerName> from WindowsImageBackup. Restarted backup resulted in the same error. However, the error dialog shows slightly different error message: The specified backup disk cannot be found. Performed System File Check by running sfc /scannow. It showed no errors. Running backup failed nevertheless. I tried searching Google for error code but I've found no solution so far. Update: I submitted technical support request to Microsoft. The first suggestion was to clean boot, but it didn't help. I pointed out that I had tried all the methods from the same problem on MS Answers, and nothing had helped.

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• Windows Experience Index could not be computed

  - by Alexey Ivanov

  I've upgraded recently from Windows Vista to Windows 8. When I try to rate my computer, it accesses DirectX 9 performance, then processes to DirectX 10 tests: And it gets stuck at this point. In 5–10 minutes, it shows error message: The video card is rather old: Mobile Intel 965 Express Chipset Family. I'm pretty sure it does not support DirectX 10. Why does Windows assess it with DirectX 10? And how can I make it skip DirectX 10 tests and get the system rating? The driver was installed automatically by Windows 8 from Windows Update. Version: 8.15.10.2697 Date: 10/01/2012

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• Open ports for Apache Tomcat-7.0.32 on Linux Mandriva

  - by ivanov-void

  I installed Apache Tomcat-7.0.32 on Linux Mandriva and I want to make it accessible. for this I need to open ports in iptables. I added the following rules- iptables -A INPUT -p tcp -m tcp --dport 8081 --syn -j ACCEPT iptables -A INPUT -p tcp -m tcp --dport 8010 --syn -j ACCEPT iptables -A INPUT -p tcp -m tcp --dport 8444 --syn -j ACCEPT iptables -A INPUT -p tcp -m tcp --dport 8006 --syn -j ACCEPT then save and restart iptables - /etc/init.d/iptables save /etc/init.d/iptables restart verify, that ports is open - netstat -tulpn | less I am running command - netstat-ntpl | grep java and see - When I disable the firewall, I see the start page of the server on request - http://server_ip:8081/ When enable - server not accessible from outside. In what may be the cause? I would be most grateful for the information! Thank you!

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• Linq like or other construction

  - by Yauhen Kavalenka

  I have DB oracle in my solution. I want to have some results in this query. Query example: select * from doctor where doctor.name like '%IVANOV_A%'; But if i do it at LINQ i cannot get any result. from p in repository.Doctor.Where(x => x.Name.ToLower().Containsname)) select p; Where 'name' is variable of string parameter. Web layout request next string: "Ivanov a" or "A Ivanov" But i suggest for user choose you pattetn for query. How i can to get "patient by name" if name consist of "First name" and "Last name" but user doesn't know your doctor's full name?

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• Can I compile Passenger (mod_rails/mod_rack) to make a statically linked Apache httpd?

  - by Oleg

  I prefer to disable httpd dynamic module loading on my production server. I've been using mod_jk linked statically into httpd for quite a long time and it proved to be stable. Now I would like to add Ruby Passenger (mod_rails/mod_rack) to my httpd. I wonder if it is possible to link it statically into Apache httpd the same way too? (without producing a huge httpd) If it is, are there any potential pitfalls, safety or performance concerns having both mod_jk and mod_rails within the same executable? Thanks

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