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• Help with complex MVVM (multiple views)

  - by jsjslim

  I need help creating view models for the following scenario: Deep, hierarchical data Multiple views for the same set of data Each view is a single, dynamically-changing view, based on the active selection Depending on the value of a property, display different types of tabs in a tab control My questions: Should I create a view-model representation for each view (VM1, VM2, etc)? 1. Yes: a. Should I model the entire hierarchical relationship? (ie, SubVM1, HouseVM1, RoomVM1) b. How do I keep all hierarchies in sync? (e.g, adding/removing nodes) 2. No: a. Do I use a huge, single view model that caters for all views? Here's an example of a single view Figure 1: Multiple views updated based on active room. Notice Tab control Figure 2: Different active room. Multiple views updated. Tab control items changed based on object's property. Figure 3: Different selection type. Entire view changes

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• Basics of Hosting [closed]

  - by Bala

  Assume we know nothing about web hosting but need to get a site online. What questions do we need to ask potential web hosting companies? What are the pitfalls and places where things can go terribly wrong? Are there any general good or bad things to be on the lookout for? Site could be anything from basic HTML up to e-commerce. We're looking for general thoughts that could apply to any web hosting. Thanks!

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• Oracle OpenWorld Preview: Oracle Social Network Developer Challenge

  - by kellsey.ruppel

  Originally posted by Jake Kuramoto on The Apps Lab blog. Noel (@noelportugal) and I have been working on something new for OpenWorld (@oracleopenworld) for quite some time, and today, I got the final approvals to go ahead with the Oracle Social Network Developer Challenge. The skinny. The Challenge is a modified hackathon, designed to run during OpenWorld and JavaOne (@javaoneconf), and attendees of both conferences are welcome to join and compete for the single prize of $500 in Amazon gift cards. There’s only one prize, so bring your A-game. The Challenge begins Sunday, September 30 at 7 PM and ends Wednesday, October 3 at 4 PM. You can and should register now, but we won’t begin approving  registrations until Sunday at 7 PM. For legal reasons, you’ll need to register with a corporate email address, not a free webmail one, e.g. Gmail, Hotmail, Outlook, Yahoo Mail, ISP-provided mail, etc. If you work for a competitor of Oracle, sorry but you’re not eligible. Everything you need is in the cloud, including support, but if you need help or have questions, visit office hours in the OTN Lounge in the Howard Street tent Monday, October 1 and Tuesday, October 2 4-8 PM to get help from the product team. The judging begins Wednesday, October 3 at 4 PM. To be considered for the prize, you’ll need to attend to demo your working code to the judges. Attendees with badges from either OpenWorld or JavaOne are welcome in the OTN Lounge, so you’ll need one of those too. Did I mention, register now? Be sure to check out Jake's original post for the long-winded explanations.

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• When trying to copy a virtual disk in VMware vSphere client, I get an errror.

  - by Zak

  I'm pretty new to all the VMware world, so this is probably mainly a question about the right set of documentation to look at. I'm trying to clone/copy a VM that I installed on an ESXi installation. I was trying to follow along with the top example here: http://serverfault.com/questions/16320/is-there-a-way-to-clone-an-existing-vm-on-an-esxi-server-without-having-to-re-imp However, I'm using the vSphere client to connect to the ESXi box and manage it, and the vSphere client is telling me it won't let me rename the vmdk file. The real answer I want is how do I clone the VM I installed if I want to spin up 5 copies. Is there another utility I can use to copy the vmdk file, then create a new virtual machine using it? Any idea why they nerfed the feature in vSphere client?

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• Norton Ghost usage, Linux? ISO? Server? MBR?

  - by overtherainbow

  Before evaluating Symantec/Norton Ghost to image partitions, I have a couple of questions about using this tool: In the product page, it only mentions Windows: Can Norton image Linux partitions as well? Can I burn an ISO to create/recover images? The ISO's I found seem only able to restore an image but not create one. Does it mean that images can only be created from within a running Windows? For Windows partitions: Does it support both regular and Server versions? Acronis doesn't image Server partitions in the regular version When restoring an image, does Norton give the option of including/excluding the MBR? Thank you.

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• Double GPRS/EDGE speed with two mobile phones at once?

  - by Patrick

  Hi, I'm using my mobile phone to connect to the internet in an area where only GPRS/EDGE is available. To increase the connection speed I would like to use a technique called connection teaming. E.g. I would use two mobile phones / usb sticks to go online with different providers at the same time and let the software distribute requests over both connections. My questions are: is there a software available to do connection teaming? It sounds like Midpoint was able to do it but it's over 7 years old and is unlikely to run on Windows 7 has anybody tried this? Thanks a lot, Patrick

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• Partner Webcast – Implementing Web Services & SOA Security with Oracle Fusion Middleware - 20 September 2012

  - by Thanos

  Security was always one of the main pain points for the IT industry, and new security challenges has been introduced with the proliferation  of the service-oriented approach to building modern software. Oracle Fusion Middleware provides a wide variety of features that ease the building service-oriented solutions, but how these services can be secured?Should we implement the security features in each and every service or there’s a better way? During the webinar we are going to show how to implement non-intrusive declarative security for your SOA components by introducing the Oracle product portfolio in this area, such as Oracle Web Services Manager and Oracle IDM. Agenda: SOA & Web Services basics: quick refresher Building your SOA with Oracle Fusion Middleware: product review Common security risks in the Web Services world SOA & Web Services security standards Implementing Web Services Security with the Oracle products Web Services Security with Oracle – the big picture Declarative end point security with Oracle Web Services Manager Perimeter Security with Oracle Enterprise Gateway Utilizing the other Oracle IDM products for the advanced scenarios Q&A session Delivery Format This FREE online LIVE eSeminar will be delivered over the Web. Registrations received less than 24hours prior to start time may not receive confirmation to attend. Thursday, September 20, 2012 - 10:00 AM to 11:00 AM CET (GMT/UTC+1)Duration: 1 hour Register Now Send your questions and migration/upgrade requests [email protected] Visit regularly our ISV Migration Center blog or Follow us @oracleimc to learn more on Oracle Technologies, upcoming partner webcasts and events. All content is made available through our YouTube - SlideShare - Oracle Mix.

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• How to become an expert web-developer?

  - by John Smith

  I am currently a Junior PHP developer and I really LOVE it, I love internet from first time I got into it, I always loved smartly-created websites, always was wondering how it all works, always admired websites with good design and rich functionality, and finally I am creating web-sites on my own and it feels really great. My goals are to become expert web-developer (aiming for creating websites for small and medium business, not enterprise-sized systems), to have a great full-time job, to do freelance and to create my own startup in future. General question: What do I do to be an expert, professional and demanded web-programmer? More concrete questions: 1). How do I choose languages and technologies needed? I know that every web-developer must know HTML+CSS+JS+AJAX+JQuery, I am doing some design aswell cause I like it and I need it for freelance also. But what about backend languages? Currently I picked PHP cause it's most demanded in my area and most of web uses it, but what would happen in future? Say, in 3 years, I am good at PHP and PHP frameworks by than, but what if some other languages get most popular? Do I switch to them? I know that good programmer is not about languages and frameworks but about ability to learn and to aim the goals, but still I think that learning frameworks for some language can take quite some time. Am I wrong? 2). In general, what are basic guidelines to be expert web-developer? What are most important things I should focus on? Thank you!

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• Sending Emails via Google SMTP - after some time quit working

  - by Chris

  on a website I use PHPMailer to send automated registration emails, etc and also a newsletter-tool (which loops through the emails and sends them one by one). Also, I configured in Gmail under Settings and confirmed @mydomain addresses, so I can send from @mydomain emails without the gmail address being displayed. Furthermore I authorized the website to send mails with this link: https://accounts.google.com/DisplayUnlockCaptcha Now, after 2 month where everything worked perfectly fine, suddenly users started not to receive emails anymore and most recently emails are not even being sent anymore. Also, I received many error messages like this: Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 550 550 5.4.1 [email protected]: Recipient address rejected: Access Denied (state 13). When I check at this link: https://toolbox.googleapps.com/apps/checkmx/ It tells 2 none critical errors: Relayhost configuration detected. There SHOULD be a valid SPF record. So, the questions I would have were: does anybody have any hint why it stopped working, what the error messages mean? what to do to fix it? where do I set a SPF record (Cpanel?)? what is a relayhost and how to fix that? It is about 1000-1400 mails a day (gmail's limit is 2000). Also, what can I do wrong when setting up an SPF record? I've heard there are some testing tools for that. Thank you so much already in advance for your help!

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• How much detail is in a good UI regression test?

  - by GlenPeterson

  We use a detailed step-by-step user-interface regression test for our commercial web application. It has a "backbone" test for the most used / most important parts of the system, with optional tests for specific areas of functionality. Using this plan has definitely helped us ensure high quality software. But, having very specific tests can be counter-productive. The tester concentrates on following the test and will completely miss usability issues, or not notice fairly obvious problems such as the bottom part of a page that is missing. By contrast, some of the best UI testing happens when building a demo of a new feature. I often do my own best testing by pretending to demonstrate the system to an imaginary prospect. Yet when I tell the testers, "Just demonstrate the system to yourself" they don't cover nearly as much functionality as they do with a detailed point-by-point test. I'm repeatedly asked to provide more and more detail in the test plan so that a new untrained tester can test with it without asking any questions. Yet details seem to be counter-productive. How much detail do you put in a regression test to make it effective? What techniques make the tester to focus more on the system than on checking off items on the test?

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• Recommendations for screen-capture tool that retains menus and mouse pointer

  - by Chris Farmer

  There are several screen capture tool questions already on this site, but I think I have a slight tweak to the usual. I'd like a handy screen capture utility that can: Run in Windows 7 Capture a sub-region of the screen Show the current state of the mouse cursor and any active menus I'd like to use it for writing docs that refer to specific application menu items. I like the built-in snipping tool in Windows 7, but the act of using it dismisses my menus, and it doesn't get the mouse cursor either. Do any such tools exist? EDIT: Ahh, I wasn't familiar with the "delayed capture" options of these tools, but they all seem to fit the bill. Thanks!

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• Python web frameworks comparisons

  - by stupidLearner

  I recently asked a question on SO about Python web frameworks: http://stackoverflow.com/questions/4909306/python-web-frameworks-vs-java-web-frameworks-how-is-web-development-in-python-do I want to learn one just for fun but it also has to be able to help me deliver a proper working application. I am looking for a framework with lots of features, powerful, mature, with large community, good documentation, books etc. I need something that will help me be more productive in developing my app and not waste time figuring out how to do a certain thing in the framework or how to write workaround around the limitations of the framework. I was thinking one of the following: django, zope, turbogears, pylons. Off course the war is raging out there and there are other alternatives but seems Django is at the top... or is it just hype? I am interested in pros and cons of each. What was the best feature you think the framework has? What is the thing it lacks? What could have been done differently. Help me chose one to learn for starters.

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• Best practice for setting Effect parameters in XNA

  - by hichaeretaqua

  I want to ask if there is a best practice for setting Effect parameters in XNA. Or in other words, what exactly happens when I call pass.Apply(). I can imagine multiple scenarios: Each time Apply is called, all effect parameters are transferred to the GPU and therefor it has no real influence how often I set a parameter. Each time Apply is called, only the parameters that got reset are transferred. So caching Set-operations that don't actually set a new value should be avoided. Each time Apply is called, only the parameters that got changed are transferred. So caching Set-operations is useless. This whole questions is bootless because no one of the mentions ways has any noteworthy impact on game performance. So the final question: Is it useful to implement some caching of set operation like: private Matrix _world; public Matrix World { get{ return _world; } set { if (value == world) return; _effect.Parameters["xWorld"].SetValue(value); _world = value; } } Thanking you in anticipation.

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• Updating drivers on a Lenovo T410

  - by dcd018

  I have a few question regarding updating the drivers on my Lenovo T410. I have Windows 7 Ultimate 64 bit installed with a 32 bit(X86) sub directory. I'm not that familiar with updating drivers on 64bit Windows so I'm wondering if I should install both 32/64 bit driver versions instead of just 64 bit. Another question I have is Lenovo specific. On the support page for my device, there is a list of Windows updates available dating back to 2009, however I do have ThinkVantage update manager installed and it checks for Windows updates weekly. Should I install all of the Windows specific updates, or can I rely on update manager? My last question is if I should install the drivers for the T410 in any specific order? Any help is much appreciated as I haven't been able to find answers to these specific questions here, or by googling. Thanks in advance

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• The lifecycle of "cool"

  - by Dori

  I've been thinking lately about how some programming projects/products become "cool," and in particular, how that trend can later reverse. Here are two examples that might better explain my context: Textmate Whenever someone asks about text editors on OS X, the answer on the SE sites is an automatic "Textmate!" But looked at objectively: Textmate 1.0 shipped October 2004 Textmate 1.5 shipped January 2006 Textmate 2 was announced February 2006 As of September 2010, the currently shipping version is 1.5.9 In all of 2010, there have been a total of three posts on the Textmate blog At what point (if ever) do Textmate fans start thinking about switching to another text editor? When it breaks after some future Apple update? When alpha geeks they respect start recommending something else? Or? jQuery Whenever a JavaScript-related question is asked on the SE sites, the knee-jerk response is "jQuery!" I've seen it happen even when the question itself only required a single line of JavaScript. Or when the question could be better answered by using CSS. Do the answerers understand they're suggesting a blowtorch to light a candle? That they're recommending adding 70K or so of code to do something trivial? Or is it a symptom of "When you have a hammer, everything looks like a nail"—that is, jQuery is all they know how to do, so that's their recommendation? And do they understand that while they may know jQuery well, that doesn't necessarily mean that they know JavaScript? Is there a way to explain that learning JavaScript would make them better jQuery programmers? My bigger-picture questions: Is this niche focus primarily a trait of programmers? How do you get programmers to not immediately jump to recommending their personal favorites? What can motivate programmers to review their initial selection criteria and possibly modify their choice? Your thoughts?

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• Implementing SOA & Security with Oracle Fusion Middleware in your solution – partner webcast September 20th 2012

  - by JuergenKress

  Security was always one of the main pain points for the IT industry, and new security challenges has been introduced with the proliferation  of the service-oriented approach to building modern software. Oracle Fusion Middleware provides a wide variety of features that ease the building service-oriented solutions, but how these services can be secured? Should we implement the security features in each and every service or there’s a better way? During the webinar we are going to show how to implement non-intrusive declarative security for your SOA components by introducing the Oracle product portfolio in this area, such as Oracle Web Services Manager and Oracle Enterprise Gateway. Agenda: SOA & Web Services basics: quick refresher Building your SOA with Oracle Fusion Middleware: product review Common security risks in the Web Services world SOA & Web Services security standards Implementing Web Services Security with the Oracle products Web Services Security with Oracle – the big picture Declarative end point security with Oracle Web Services Manager Perimeter Security with Oracle Enterprise Gateway Utilizing the other Oracle IDM products for the advanced scenarios Q&A session Delivery Format This FREE online LIVE eSeminar will be delivered over the Web. Registrations received less than 24hours prior to start time may not receive confirmation to attend. Duration: 1 hour Register Now Send your questions and migration/upgrade requests [email protected] Visit regularly our ISV Migration Center blog or Follow us @oracleimc to learn more on Oracle Technologies, upcoming partner webcasts and events. All content is made available through our YouTube - SlideShare - Oracle Mix. SOA & BPM Partner Community For regular information on Oracle SOA Suite become a member in the SOA & BPM Partner Community for registration please visit  www.oracle.com/goto/emea/soa (OPN account required) If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix Forum Technorati Tags: Technorati Tags: ISV migration center,SOA,IDM,SOA Community,Oracle SOA,Oracle BPM,BPM,Community,OPN,Jürgen Kress

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• Windows Upgrade vs Full Install

  - by James Atkinson

  I'm in the process of purchasing a Netbook for use while traveling. The included OS is XP, however, I would like to upgrade(?) to Windows 7. My question: Does a Windows Upgrade have the same physical footprint and performance as a full install? Does an upgrade leave behind non used files/resources that were originally included in XP? If so, are there ways to reduce this? I'm trying to reduce as much OS bloat as possible. Please let me know if my question is unclear. Thanks. Related to http://superuser.com/questions/60646/is-a-clean-install-really-better-than-an-upgrade however, this doesn't address the "leftovers" question.

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• Alert for Forms customers running Oracle Forms 10g

  - by Grant Ronald

  Doesn’t time fly!  While you might have been happily running your Forms 10g applications for about 5 years or so now, the end of premier support is creeping up and you need to start planning for a move to Oracle Forms 11g. The premier support end date in December 31st 2011 and this is documented in Note: 1290974.1 available from MOS. So how much of an impact is this going to be?  Maybe not as much as you think.  While Forms 11g is based on WebLogic Server (WLS),10g was based  on OC4J.  That in itself doesn’t impact Forms much.  In most case it will simply be a recompile of your Forms source files and redeploy on WLS 11g. The Forms builder is the same in 11g as in 10g although its currently not available as a separate download from the main middleware bundle.  You can also look at a WLS Basic license option which means you shouldn’t have to shell out on upgrading to a WLS Suite license option. So what’s the proof in this being a relatively straightforward upgrade?  Well, we’ve had a big uptake of Forms 11g already (which has itself been out for over 2 years).  Read about BT Expedite’s upgrade where “The upgrade of Forms from Oracle Forms 10g to Oracle Forms 11g was relatively simple and on the whole, was just a recompilation”.  Or AMEC where “This has been one of the easiest Forms conversions we’ve ever done and it was a simple recompile in all cases” So if you are on 10g (or even earlier versions) I’d strongly consider starting your planning for an upgrade to 11g now. As always, if you have any questions about this you can post on the OTN forums.

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• DNS PTR record when domain on shared IP address

  - by Marco Demaio

  Hello, I own a typical shared IP hosting plan and domain. I can modify the DNS of the domain from the control panel. The mailserver shares the same IP address, so my typical DNS config is: www.mydomain.com A -> IP mydomain.com A -> IP ftp.mydomain.com A -> IP mail.mydomain.com A -> IP mydomain.com MX(10) -> IP I read some Q&A on this site where they suggest to add PTR record mainly for mailserver. I would like to add PTR record to my domain, I have got two questions: 1) can PTR record be added even if the hosting/mailserver are on a shared IP address? Or do I need a dedicated IP. 2) How do I setup PTR record, I mean does it look like A record: mydomain.com (PTR) -> myip

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• Per-machine decentralised DNS caching - nscd/lwresd/etc

  - by Dan Carley

  Preface: We have caching resolvers at each of our geographic network locations. These are clustered for resiliency and their locality reduces the latency of internal requests generated by our servers. This works well. Except that a vast quantity of the requests seen over the wire are lookups for the same records, generated by applications which don't perform any DNS caching of their own. Questions: Is there a significant benefit to running lightweight caching daemons on the individual servers in order to reduce repeated requests from hitting the network? Does anyone have experience of using [u]nscd, lwresd or dnscache to do such a thing? Are there any other packages worth looking at? Any caveats to beware of? Besides the obvious, caching and negative caching stale results.

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• recover files from encrypted home folder

  - by maskiepop

  I can't seem to find the answer to my questions -- hence my posting this here. 1) I have encrypted my home folder in LinuxMint 15 Cinammon x64. If I create images of LM's partitions via fsarchiver, how do I go about selectively restoring home folders, and files from the FS images? 2) I haven't done this yet; but can I restore another users home folder into another user; both unencrypted. Is that a fairly common thing to do in Linux/ubuntu? I mean is the process fairly straightforward? What if the home folder I want to copy over to another user is encrypted? Thx

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• How to advocate Stack Overflow at work

  - by Gordon

  I am thinking of doing a short presentation at work about using Stack Overflow as a resource for your day job. What is the experience doing this? Would you deem it a valid resource to tell you colleagues about or is it similar to telling them about Google as a resource? Is there a better way of doing it? I was leaning toward asking questions side of Stack Overflow rather than answering them to avoid you-shouldn't-be-doing-this-on-work-time argument. Just as a follow up. Originally I didn't want to make the question to specific to my own case. My presentation will only be a quick four minute talk, which I will repeat over an hour to different groups. I may ask a question before the talk on Stack Overflow and refer to it during the presentation. Hopefully I will get some activity during the hour. I am also going to talk briefly about some of the other Stack Exchange sites that would fit the audience as they are not all developers. I think Super User, Server Fault and Programmers should work well. I will not be doing the presentation for another couple of months as it has be rescheduled, but I will update on how I got on.

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• How to restrict paddle movement using Farseer Physics engine 3.2

  - by brainydexter

  I am new to using Farseer Physics Engine 3.2(FPE), so please bear with my questions. Also, since FPE 3.2 is based on Box2D, I have been reading Box2D manual and pieces of code scattered in samples to better understand terminology and usage. Pong is usually my testbed whenever I try to do something new. Here is one of the issue I am running into: How can I restrict paddles to move only along Y axis, because the ball comes in and knocks off the paddles and everything floats in space afterwards ? (Box = Rectangle and ball = circle) I know MKS is the unit system, but is there a recommendation for sizes/position to be used ? I know this is a very generic question, but it would be good to know a simple set of values that one could use for making a game as simple as pong. Between box2d and FPE, I have some doubts: what is the recommended way of making a body in FPE ? world.CreateBody() does not exist in FPE Box2d manual recommends never to "new" body(since Box2D uses Small Object allocators), so is there a recommended way in Farseer to create a body (apart from factories) ? In box2d, it is recommended to keep a track of the body object, since it is also the parent to fixture(s). Why is it that in most of the examples, the fixture object is tracked ? Is there a reason why body is not tracked ? Thanks

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• Upgrade Mysql to 5.5 with cPanel

  - by Merrill

  I have a cPanel installed on a CentOS server and it includes an old version of Mysql. Has anyone tried upgrading Mysql to 5.5 on a cPanel managed server? If so, I would really like some guidance. I read, on the cPanel forum, that it's not supported and one user complained, after manually upgrading his version of Mysql, cPanel automatically removed it, but that was a long time ago. Also, I'm a newbie to Linux, so please forgive any dumb questions. Help... Thanks.

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• Oracle Tutor: Learn Tutor in the comfort of your own home or office

  - by emily.chorba(at)oracle.com

  The primary challenge for companies faced with documenting policies and procedures is to realize that they can do this documentation in-house, with existing resources, using Oracle Tutor. Procedure documentation is a critical success component for supporting corporate governance or other regulatory compliance initiatives and when implementing or upgrading to a new business application. There are over 1000 Oracle Tutor customers worldwide that have used Tutor to create, distribute, and maintain their business procedures. This is easily accomplished because of Tutor's: Ease of use by those who have to write procedures (Microsoft Word based authoring) Ease of company-wide implementation (complex document management activities are centralized) Ease of use by workers who have to follow the procedures (play script format)Ease of access by remote workers (web-enabled) Oracle University is offering Live Virtual Tutor classes! The class lasts four days, starts on Tuesday and finishes on Friday. This course is an introduction to the Oracle Tutor suite of products. It focuses on the Policy and Procedure writing feature set of the Tutor applications. Participants will learn about writing procedures and maintaining these particular process document types, all using the Tutor method. The next three classes are scheduled for: April 19 - 22 May 31 - June 3 July 5 - 8 You will learn to: Write procedures Create procedure Flowcharts Write support documents Create Impact Analysis Reports Create Role-base Employee Manuals Deploy online Employee Manuals on an Intranet Enjoy learning Tutor in your local environment. Start the sign up process from this link Learn More For more information about Tutor, visit Oracle.com or the Tutor Blog. Post your questions at the Tutor Forum. Emily Chorba Principle Product Manager Oracle Tutor & BPM

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