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• Ideas for campus Internet Login mechanism?

  - by miCRoSCoPiCeaRthLinG

  Hello, I work at this university and I'm seeking an effective solution for an internet login mechanism. We have a leased-link at our campus, which is shared by both staff & students. All systems (desktops + laptops + handhelds) connect to the internal network via wifi and can then get onto the net. However, a local govt. regulation requires us to keep track of individual internet usage and hence we need a solution (pref. free / opensource) that'll enable us to implement some sort of an authentication mechanism once a user hooks onto the network. One requirement is that the software should be able to authenticate either against LDAP or some other custom user database (MySQL based) or both. Can anyone suggest any such software or mechanism? Most of our servers are Linux based... so something that runs off such a platform will be good. Thanks, m^e

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• How do I enable SELinux when booting a ramdisk from a CD/DVD?

  - by JeffG

  I have a bootable DVD which boots the same Kernel as the Hard Drive (which uses SELinux). I have copied /etc/selinux and all kernel modules to my ramdisk, and have tried various combinations of selinux=1 and selinux 1 with enforcing 1 and enforcing 0. as Kernel boot parameters. All files contained in the checkpolicy, libselinux, policycoreutils, selinux-policy and selinux-policy-targeted rpms have also been copied into the ramdisk tree. After the system boots from the ramdisk, I check dmesg: % dmesg | grep -i selinux Kernel command line: initrd=idrd.img ramdisk_size=110476 selinux=1 SELinux: Initializing. SELinux: Starting in permissive mode selinux_register_security: Registering secondary module capability SElinux: Registering netfilter hooks But SELinux isn't running: % /usr/sbin/getenforce Disabled % /usr/sbin/setenforce 1 /usr/sbin/setenforce: SELinux is disabled Neither /var/log/messages nor /proc/kmsg hold clues.

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• How do I enable SELinux when booting from a CD/DVD?

  - by JeffG

  I have a bootable DVD which boots the same Kernel as the Hard Drive (which uses SELinux). I have copied /etc/selinux and all the kernel modules to my ramdisk, and have tried both selinux=1 and selinux 1 as Kernel boot parameters. After the system boots, I check dmesg: % dmesg | grep -i selinux Kernel command line: initrd=idrd.img ramdisk_size=110476 selinux=1 SELinux: Initializing. SELinux: Starting in permissive mode selinux_register_security: Registering secondary module capability SElinux: Registering netfilter hooks But SELinux isn't running: % /usr/sbin/getenforce Disabled % /usr/sbin/setenforce 1 /usr/sbin/setenforce: SELinux is disabled /var/log/messages does not hold any clues. /proc/kmsg also has nothing

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• Automating and deploying new linux servers

  - by luckytaxi

  I'm in the process of developing a method to automate new virtual machines into my environment. 90% of our machines are virtual but the process is similar for both physical and vmware based images. What I do now is I use cobbler to install the base OS. The kickstart script has post hooks to modify the yum repo and installs puppet and func. Once the servers are running, I manually add them into nagios and sign the certificate via the puppetmaster. I've since migrated most of the resources to use mysql as the backend. I wanted to see what others are doing and my goal for 2011 is to have puppet inventory the hardware into mysql, and somehow i'll script a python script to have nagios grab the info and automatically add it for monitoring purposes. It's kind of tedious to have to add each new server into nagios, puppet's dashboard, munin, etc...

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• Trying to create a git repo that does an automatic checkout everytime someone updates origin

  - by Dane Larsen

  Basically, I have a server with a git repo 'origin'. I'm trying to have another repo auto-pull from origin every time someone pushes code to it. I've been using the hooks in origin, specifically post-receive. So far, my post receive looks something like this: #!/bin/sh GIT_DIR=/home/<user>/<test_repo> git pull origin master But when I push to origin from another computer, I get the error: remote: fatal: Not a git repository: '/home/<user>/<test_repo>' However, test_repo most definitely is a git repo. I can cd into it and run 'git pull origin master' and it works fine. Is there an easier way to do what I'm trying to do? If not, what am I doing wrong with this approach? Thanks in advance. Edit, to clarify: The repo is a website in progress, and I'd like to have a version of it available at all times that is fully up to date.

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• USB Adapter for Memory Cards

  - by ktm5124

  I am looking for something like a USB adapter for video cards. It is a cable that on one end hooks into a USB port on a computer and on the other accepts any one of a variety of video cards. Essentially it's an "all-in-one" USB adapter for video cards. I'm told that they are sold all over... does anyone know what it is called or where to find them? I should clarify, by the way, that by "video card" I mean a memory card for a video camera, and that the goal is to read this video data onto a computer, from a variety of video card types, through a USB port. That way if you go to your friend's house and bring your computer, you can transfer the video data on his video camera to your computer, trusting that the adapter will have a slot for his kind of video card.

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• Distribute terrabyte files to the public from web server

  - by MarkJ

  Hi We need to set up a website which makes two or three large files publicly available - the files will be 1 or 2 terrabytes each. Although they will be public, in practise I expect only a relatively small number of scientists will want to download them. What is the best way to allow this? I've had a quick talk to a web-hosting provider (rackspace) and they suggested a hybrid solution. An entry-level managed server (we predict fairly low traffic for the website, but we do need to install some custom CGI software). Some cloud storage which hooks into Limelight Networks. This would host the large files, for download by FTP. It sounded OK to me but I know relatively little about server administration. Does it make sense? Thanks in advance, Mark

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• How to make routes on a windows 7 laptop persistent?

  - by askvictor

  I have a number of (windows 7) laptops that normally connect via wireless. We also have a wired network for special purposes. When one of these laptops plugs in to the wired network, at the moment, it makes the wired network the default route. Instead, I would like it to keep the wireless network the default, and route only 10...* through the wired. I can achieve this with: route delete 0.0.0.0 IF 22 route add 10.0.0.0 ... IF 22 (where IF 22 is the wired network interface). But how can I get this to stick? Currently, if the wired network is unplugged then re-plugged, it grabs the default route again. So I want a way of making the wireless network not get the default route, and to make the 10...* network persistent. Is there a hook to run commands after a network connection is established in windows? In linux I would use post-up hooks.

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• LUKS-Encrypted Root Partition in Ubuntu 9.04

  - by Martindale

  I have a LUKS-encrypted root partition that I have installed Ubuntu 9.04 to. I have of course placed /boot on a separate ext2 partition, and my boot loader loads and functions correctly. However, I can't seem to get my initrd to load the LUKS-encrypted root using the appropriate /dev/mapper/ address. What hooks and scripts do I need to add to get this to function correctly, and what is the correct way to regenerate my initrd? I can CHROOT into this install, and everything works fine - but I just can't seem to get it to actually boot. Help!

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• iis windos authentication way to turn off password prompt

  - by Ellery Newcomer

  IIS noobie here. I have an intranet website hosted by IIS (6? I'll check after the weekend) that is set to Windows Authentication. Whenever there is some sort of authentication failure, the website gives the user a windows account sort of password prompt and doesn't display a 403 (or 401 or whatever) page unless the user cancels the prompt. However, entering a password is never, ever a use case for this website. Is there a way to turn off the password prompt and just display the error page? Bonus: are there any good hooks for this precise point for code that would do diagnosis and logging?

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• sudoers security

  - by jetboy

  I've setup a script to do Subversion updates across two servers - the localhost and a remote server - called by a post-commit hook run by the www-data user. /srv/svn/mysite/hooks/post-commit contains: sudo -u cli /usr/local/bin/svn_deploy /usr/local/bin/svn_deploy is owned by the cli user, and contains: #!/bin/sh svn update /srv/www/mysite ssh cli@remotehost 'svn update /srv/www/mysite' To get this to work I've had to add the following to the sudoers file: www-data ALL = (cli) NOPASSWD: /usr/local/bin/svn_deploy cli ALL = NOEXEC:NOPASSWD: /usr/local/bin/svn_deploy Entries for both www-data and cli were necessary to avoid the error: post commit hook failed: no tty present and no askpass program specified I'm wary of giving any kind of elevated rights to www-data. Is there anything else I should be doing to reduce or eliminate any security risk?

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• svnrepo + trac hosting

  - by Shikhar

  Does anyone know of a good and economic svn + trac hosting site. Specific requirements 1) trac hooks should be in place, which enables commmit messages to be updated in trac issues. 2) It should have emailTotracScript or MailToTracPlugin installed, with which an issue can be reported via email. If its located in Asia pacific it would be great, as time delay from the US is very high. I am already using sourcerepo.com and its very good. Only short coming is they dont have emailtotrac and the time delay is significant. any other inputs would be helpful. TIA

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• Getting some perl script errors on execution of svnnotify

  - by user2474633

  I installed svnnotify:2.84, perl module 5.10 for subversion 1.7.11 on redhat release 6. And i am using this command in post-commit hooks to get notified svnnotify --repos-path "$1" --revision "$2" --from [email protected] \ --to-regex-map [email protected]="branches/Test_branch12" \ --smtp xxxxxx.com HTML::ColorDiff >> /tmp/notify.txt 2>&1 once the commit is successful i can see the below mentioned error in the output file. Use of uninitialized value $[0] in exec at /usr/local/share/perl5/SVN/Notify.pm line 2332. Can't exec "": No such file or directory at /usr/local/share/perl5/SVN/Notify.pm line 2332. Use of uninitialized value $[0] in concatenation (.) or string at /usr/local/share/perl5/SVN/Notify.pm line 2332. Cannot exec : No such file or directory Child process exited: 512 Can anyone help on this.

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• Java Spotlight Episode 105: Mark Reinhold on the Future of Java

  - by Roger Brinkley

  Our yearly interview with Mark Reinhold, Chief Java Architect, Java Platform Group on the future of Java. 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 Two Java Update Releases New Java SE 6 software updates from Apple for OS X 10.8, 10.7 and 10.6 are now live and available to all customers via the Mac App Store / Software Update. The JavaFX Community Site on Java.net JSR 360: Connected Limited Device Configuration 8 JSR 361: Java ME Embedded Profile 2012 JCP EC Election Ballot open Meet the EC Candidates Recording and Materials Events Oct 22-23, Freescale Technology Forum - Japan, Tokyo, Japan Oct 23-25, EclipseCon Europe, Ludwigsburg, Germany Oct 30-Nov 1, Arm TechCon, Santa Clara, United States of America Oct 31, JFall, Hart van Holland, Netherlands Nov 2-3, JMaghreb, Rabat, Morocco Nov 5-9, Øredev Developer Conference, Malmö, Sweden Nov 13-17, Devoxx, Antwerp, Belgium Nov 20-22, DOAG 2012, Nuremberg, Germany Dec 3-5, jDays, Göteborg, Sweden Dec 4-6, JavaOne Latin America, Sao Paolo, Brazil Feature InterviewMark Reinhold is Chief Architect of the Java Platform Group at Oracle, where he works on the Java Platform, Standard Edition, and OpenJDK. His past contributions to the platform include character-stream readers and writers, reference objects, shutdown hooks, the NIO high-performance I/O APIs, library generification, and service loaders. Mark was the lead engineer for the 1.2 and 5.0 releases and the specification lead for Java SE 6. He is currently leading the Jigsaw and JDK 7 Projects in the OpenJDK Community. Mark holds a Ph.D. in Computer Science from the Massachusetts Institute of Technology. In this interview he discusses the future of Java Platform with regards to Jigsaw, Lambda, and Nashorn components as well as the OpenJDK community. What’s Cool QotD: Ubuntu 12.10 Release Notes on OpenJDK 7 New Lambda binary drop Development forest for Compact Profiles (JEP 161)

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• Clarity Comics Comic Reader for Windows Phone 7

  Weve been really busy building all sorts custom Windows Phone 7 goodies lately.  One of the experiences weve been working on recently is a comic book reader  for WP7.  Here at Clarity we have particular individuals that are nuts about comics and codingso it was a no-brainer to knock this thing out.  Under the Covers There are a couple of components to this application that made it come together quickly.  First, as you know, WP7 runs Silverlight so we were able to leverage a bunch of silverlight assets we had hanging around from previous projects.  We were shocked to see the 80% code reuse claim was true!  Second, the application was built on the newly created Clarity Phone Framework (CP7).  This framework provides a platform that we can leverage to quickly wire up applications and get them out the door.  The framework includes gesture support, mapping controls, data visualization,  a special mvvm architecture for the phone, navigation animations, and a handful of other controls weve cooked up in our labslike voice recognition support.  (additional posts on the framework are coming soon) Third, the reading experience of the comic reader is driven by Deep Zoom.  We were pleasantly surprised to see that the windows phone 7 sdk worked nicely with Deep Zoom and the Deep Zoom composer.  We did have to add some hooks in there to get the gestures to work, but nothing too deep (no pun intended).  Unfortunately we cant release the code for this one just yet.  But rest-assured, there will be plenty more Windows Phone 7 and Silverlight goodies to come. Cheers!Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Clarity Comics Comic Reader for Windows Phone 7

  Weve been really busy building all sorts custom Windows Phone 7 goodies lately.  One of the experiences weve been working on recently is a comic book reader  for WP7.  Here at Clarity we have particular individuals that are nuts about comics and codingso it was a no-brainer to knock this thing out.  Under the Covers There are a couple of components to this application that made it come together quickly.  First, as you know, WP7 runs Silverlight so we were able to leverage a bunch of silverlight assets we had hanging around from previous projects.  We were shocked to see the 80% code reuse claim was true!  Second, the application was built on the newly created Clarity Phone Framework (CP7).  This framework provides a platform that we can leverage to quickly wire up applications and get them out the door.  The framework includes gesture support, mapping controls, data visualization,  a special mvvm architecture for the phone, navigation animations, and a handful of other controls weve cooked up in our labslike voice recognition support.  (additional posts on the framework are coming soon) Third, the reading experience of the comic reader is driven by Deep Zoom.  We were pleasantly surprised to see that the windows phone 7 sdk worked nicely with Deep Zoom and the Deep Zoom composer.  We did have to add some hooks in there to get the gestures to work, but nothing too deep (no pun intended).  Unfortunately we cant release the code for this one just yet.  But rest-assured, there will be plenty more Windows Phone 7 and Silverlight goodies to come. Cheers!Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Fixing unbootable installation on LVM root from Desktop LiveCD

  - by intuited

  I just did an installation from the 10.10 Desktop LiveCD, making the root volume an LVM LV. Apparently this is not supported; I managed it by taking these steps before starting the GUI installer app: installing the lvm2 package on the running system creating an LVM-type partition on the system hard drive creating a physical volume, a volume group and a root LV using the LVM tools. I also created a second LV for /var; this I don't think is relevant. creating a filesystem (ext4) on each of the two LVs. After taking these steps, the GUI installer offered the two LVs as installation targets; I gladly accepted, also putting /boot on a primary partition separate from the LVM partition. Installation seemed to go smoothly, and I've verified that both the root and var volumes do contain acceptable-looking directory structures. However, booting fails; if I understood correctly what happened, I was dropped into a busybox running in the initrd filesystem. Although I haven't worked through the entirety of the grub2 docs yet, it looks like the entry that tries to boot my new system is correct: menuentry 'Ubuntu, with Linux 2.6.35-22-generic' --class ubuntu --class gnu-linux --class gnu --class os { recordfail insmod part_msdos insmod ext2 set root='(hd0,msdos3)' search --no-floppy --fs-uuid --set $UUID_OF_BOOT_FILESYSTEM linux /vmlinuz-2.6.35-22-generic root=/dev/mapper/$LVM_VOLUME_GROUP-root ro quiet splash initrd /initrd.img-2.6.35-22-generic } Note that $VARS are replaced in the actual grub.cfg with their corresponding values. I rebooted back into the livecd and have unpacked the initrd image into a temp directory. It looks like the initrd image lacks LVM functionality. For example, if I'm reading /usr/share/initramfs-tools/hooks/lvm2 (installed with lvm2 on the livecd-booted system, not present on the installed one) correctly, an lvm executable should be situated in /sbin; that is not the case. What's the best way to remedy this situation? I realize that it would be easier to just use the alternate install CD, which apparently supports LVM, but I don't want to wait for it to download and then have to reinstall.

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• How to cross-reference many character encodings with ASCII OR UTFx?

  - by Garet Claborn

  I'm working with a binary structure, the goal of which is to index the significance of specific bits for any character encoding so that we may trigger events while doing specific checks against the profile. Each character encoding scheme has an associated system record. This record's leading value will be a C++ unsigned long long binary value and signifies the length, in bits, of encoded characters. Following the length are three values, each is a bit field of that length. offset_mask - defines the occurrence of non-printable characters within the min,max of print_mask range_mask - defines the occurrence of the most popular 50% of printable characters print_mask - defines the occurrence value of printable characters The structure of profiles has changed from the op of this question. Most likely I will try to factorize or compress these values in the long-term instead of starting out with ranges after reading more. I have to write some of the core functionality for these main reasons. It has to fit into a particular event architecture we are using, Better understanding of character encoding. I'm about to need it. Integrating into non-linear design is excluding many libraries without special hooks. I'm unsure if there is a standard, cross-encoding mechanism for communicating such data already. I'm just starting to look into how chardet might do profiling as suggested by @amon. The Unicode BOM would be easily enough (for my current project) if all encodings were Unicode. Of course ideally, one would like to support all encodings, but I'm not asking about implementation - only the general case. How can these profiles be efficiently populated, to produce a set of bitmasks which we can use to match strings with common characters in multiple languages? If you have any editing suggestions please feel free, I am a lightweight when it comes to localization, which is why I'm trying to reach out to the more experienced. Any caveats you may be able to help with will be appreciated.

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• Inheritance versus Composition in a business application

  - by ProfK

  I have a training management and tracking system, with a high level structure as follows: We have a Role1, e.g. Manager, Shift-boss, miner, etc. and a Candidate, training for that Role. The role has a list of courses and their subjects the candidate needs to complete to qualify for the role. Candidate has a TrainingHistory attribute, containing the courses and subjects they have completed, their results, and the date completed. Now I see it as a TrainingHistoryCourse is-a Course, extended to add DateCompleted etc. but something is nagging at me to rather use something like a TrainingHistoryRecord that has-a Course. How can I further analyse this to determine which pattern to use? Then, a Role has a list of RoleTask definitions that the Candidate must be observed practising, and a Candidate has a history of RoleTaskObservation objects recording their performance at these tasks. This is very similar to the course/subject requirement and history pattern for the candidate, except for one less hierarchical level, but, a RoleTaskObservation clearly does not have an is-a relationship with RoleTask, unless I block my nose and rather use ObservedRoleTask. I would prefer to use the same pattern for both subject/course and task/observation structures, but I think that would force me to adopt a composition pattern for TrainingHistoryCourse. What is the wisdom here? Always inherit where possible and validated by a solid is-a association, or always favour composition wherever possible? 1 Client specified this to be called JobTitle, but he isn't writing the app, and a JobTitle is only one attribute of a Role. Authorization roles are handled by the DevExpress framework and its customization hooks, so there would be very little little confusion between a business Role in my domain objects and an authorization role in lower level, framework code.

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• $TERM set to "dumb" causes problems with suspend

  - by julkiewicz

  I've just upgraded from 11.04 to 11.10. So far I love it, everything seems just so much snappier. Now I just have one minor issue. When I try to suspend my laptop, it doesn't work - instead it fades out the screen, blocks it and then instantly wakes back. I've checked the logs in /var/log/pm-suspend.log and this fragment seems relevant: /usr/lib/pm-utils/sleep.d/000kernel-change suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/00clear suspend suspend: TERM environment variable not set. /usr/lib/pm-utils/sleep.d/00clear suspend suspend: Returned exit code 1. Sat Nov 19 12:23:20 CET 2011: Inhibit found, will not perform suspend Sat Nov 19 12:23:20 CET 2011: Running hooks for resume The mentioned script at /usr/lib/pm-utils/sleep.d/00clear reads: #!/bin/bash clear When I open a terminal anywhere by hand, $TERM is set to either "linux" or "xterm". However somehow when the 00clear command is executed $TERM is set to "dumb". Two questions: What is the correct value for $TERM when running 00clear script? Where can I set it up? I've looked for solutions on the web, however I could only find information on how to configure $TERM in a regular terminal (and this one is set properly).

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• Documentation in RETL, RIB, and RSL Release 13.2.4

  - by Oracle Retail Documentation Team

  The Patch Release 13.2.4 of the integration-related products, Oracle Retail Extract, Transform and Load (RETL), Oracle Retail Integration Bus (RIB), and Oracle Retail Service Layer (RSL), is now available from My Oracle Support. End User Documentation Enhancements The following enhancements have been made to the documentation: New RETL Installation GuideNew in Release 13.2.4, the RETL Installation Guide includes complete instructions to install and configure RETL 13.2.4. Installation instructions were previously in the Programmer’s Guide. As part of this enhancement, content was added to and tested in the RETL Installation Guide to ensure that it contain similar chapters and sections included in other Oracle Retail Installation Guides. Template Creator documentation, under the RIB product umbrellaThe Oracle Retail Functional Artifact Guide and the Oracle Retail Functional ArtifactGenerator Guide contain new information about a new tool called the Template Creator. The Functional Artifacts Generator tool has been enhanced to generate custom and localized payloads business objects on demand, based on Oracle Retail Functional Artifact rules. A new tool called the Template Creator has been provided to create the placeholder XSDs and the import hooks in the base objects on an as-needed basis. In other words, this tool constructs the appropriate placeholders in the packaging structure in the correct locations. The Artifact Generator tools, including the Template Creator, can be used either as a command line or GUI tool set.   List of Documents in RETL, RIB, and the Oracle Retail Service Layer (RSL) 13.2.4  The following documents are included in release 13.2.4 of the applications noted above: RIB Oracle Retail Integration Bus Release Notes Oracle Retail Integration Bus Implementation Guide Oracle Retail Integration Bus Installation Guide Oracle Retail Integration Bus Operations Guide Oracle Retail Functional Artifact Generator Guide Oracle Retail Functional Artifacts Guide Oracle Retail Service Layer Installation Guide Oracle Retail SOA Enabler Tool Guide RIB Integration Guide (ID 1277421.1) RETL Oracle Retail Extract, Transform, and Load Release Notes Oracle Retail Extract, Transform, and Load Installation Guide Oracle Retail Extract, Transform, and Load Programmer’s Guide RSL Oracle Retail Service Layer Release Notes Oracle Retail Service Layer Installation Guide Oracle Retail Service Layer Programmer’s Guide

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• Integrating different branches from external sources into a single Mercurial repository

  - by dukeofgaming

  I'm currently working in a company using Perforce and am making way for distributed version control with Mercurial. I've had success importing Perforce history using the perfarce (quite a suitable name, I laugh every time I see/say it) however, this only works with a single branch at a time. Here's how my P4 integration setup works: In perforce, create a "client", which is kind of a description of what you will be constantly updating/checking-out. This can only address one branch at a time (trunk or other). Once you do this, run hg clone p4://<server>/<client_name> Go to .hg/hgrc and put the perforce path line: perforce = p4://<server>/<client_name> Work normally with the code under mercurial, do hg pull perforce to sync up, hg push to export a changelist What I'd like to be able to do is have a perforce path per branch and have everything work in the same repository. Now, pushing is not a problem, however, if I pull the history from another branch it would end up at the default branch. I'd like to be able to do something like hg pull perforce-R5 and have it land in mercurial's R5 branch. Even if I have no merging history, it would be sweet enough to be able to preserve it. There are also other plugins for CVCSs that let you integrate mercurial, but AFAIK the subversion one has the same problem. I don't think there is a straight-through way of doing this, but as long as I could automate the process with some hooks and scripts in a single Mercurial machine, that would be good enough.

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• Did 12.04 just add multi-touch gesture support mid-release?

  - by adempewolff

  I was reviewing the updates I was about to download today and I noticed that a lot of them had to do with gesture support, noticed that many of these were new installs rather than upgrades. Has 12.04 just added multi-touch gesture support mid-release? If so, what are the capabilities that this adds? Which applications already support these capabilities and can I expect others to add support in the near future? Here are the packages that were installed: Install: libframe6:amd64 (2.2.4-0ubuntu0.12.04.1), libgeis1:amd64 (2.2.9.2-0ubuntu1), libgrail5:amd64 (3.0.6-0ubuntu0.12.04.01, automatic) And here are those that were upgraded (also including many with touch support): Upgrade: libgrip0:amd64 (0.3.4-0ubuntu2~ubuntu12.04.1, 0.3.5-0ubuntu1~12.04.1), eog:amd64 (3.4.2-0ubuntu1, 3.4.2-0ubuntu1.1), ginn:amd64 (0.2.4-0ubuntu1, 0.2.4.1-0ubuntu1) Of which the descriptions for the new installs are, libgeis1: Gesture engine interface support A common API for clients of a systemwide gesture recognition and propagation engine. libframe6: Touch Frame Library This library handles the buildup and synchronization of a set of simultaneous touches. The library is input agnostic, with bindings for mtdev, frame and XI2.1. libgrail5: Gesture Recognition And Instantiation Library This library consists of an interface and tools for handling gesture recognition and gesture instantiation. Applications can use the grail callbacks to receive gesture primitives and raw input events from the underlying kernel device. And the descriptions for the upgraded packages are, ligrip0: provides multitouch gestures to GTK+ apps Libgrip hooks gesture recognition into GTK+ applications. ginn: Gesture Injector: No-GEIS, No-Toolkits A daemon with jinn-like wish-granting capabilities: it gives applications the ability to support a subset of multi-touch gestures without having to integrate GEIS or multi-touch GTK/Qt libs. Adding in a ton of new libraries and upgrading the existing components makes me wonder if 12.04 is meant to start natively supporting gestures other than two finger scroll in the near future. I expected these capabilities to be introduced soon but I thought that they would only be rolled out in a new release, not as upgrades for an existing release. Anyone have any info about this?

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• How to Properly Make use of Codeigniter's HMVC

  - by Branden Stilgar Sueper

  I have been having problems wrapping my brain around how to properly utilize the modular extension for Codeigniter. From what I understand, modules should be entirely independent of one another so I can work on one module and not have to worry about what module my teammate is working on. I am building a frontend and a backend to my site, and am having confusion about how I should structure my applications. The first part of my question is should I use the app root controllers to run modules, or should users go directly to the modules by urls? IE: in my welcome.php public function index() { $this->data['blog'] = Modules::run( 'blog' ); $this->data['main'] = Modules::run( 'random_image' ); $this->load->view('v_template', $this->data); } public function calendar() { $this->data['blog'] = Modules::run( 'blog' ); $this->data['main'] = Modules::run( 'calendar' ); $this->load->view('v_template', $this->data); } My second part of the question is should I create separate front/back end module folders -config -controllers welcome.php -admin admin.php -core -helpers -hooks -language -libraries -models -modules-back -dashboard -logged_in -login -register -upload_images -delete_images -modules-front -blog -calendar -random_image -search -views v_template.php -admin av_template.php Any help would be greatly appreciated.

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• Designing web-based plugin systems correctly so they don't waste as many resources?

  - by Xeoncross

  Many CMS systems which rely on third parties for much of their code often build "plugin" or "hooks" systems to make it easy for developers to modify the codebase's actions without editing the core files. This usually means an Observer or Event design pattern. However, when you look at systems like wordpress you see that on every page they load some kind of bootstrap file from each of the plugin's folders to see if that plugin will need to run that request. Its this poor design that causes systems like wordpress to spend many extra MB's of memory loading and parsing unneeded items each page. Are there alternative ways to do this? I'm looking for ideas in building my own. For example, Is there a way to load all this once and then cache the results so that your system knows how to lazy-load plugins? In other words, the system loads a configuration file that specifies all the events that plugin wishes to tie into and then saves it for future requests? If that also performs poorly, then perhaps there is a special file-structure that could be used to make educated guesses about when certain plugins are unneeded to fullfil the request. Any ideas? If anyone wants an example of the "plugin" concept you can find one here.

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