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  • which techonology is good for my online store?

    - by 5YrsLaterDBA
    I am thinking about build a online store for my wife to sale something. we need database for customer info and goods info. we also need shopping cart for customers to use. I have yrs java experience but no web experience (know a little about jsp and servlet). I am thinking using wicket and other java technologies plus MySQL to build it. but I am open to other options. I am willing to learn new things. what's your expert views? thanks,

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  • How do I initialize attributes when I instantiate objects in Rails?

    - by nfm
    Clients have many Invoices. Invoices have a number attribute that I want to initialize by incrementing the client's previous invoice number. For example: @client = Client.find(1) @client.last_invoice_number > 14 @invoice = @client.invoices.build @invoice.number > 15 I want to get this functionality into my Invoice model, but I'm not sure how to. Here's what I'm imagining the code to be like: class Invoice < ActiveRecord::Base ... def initialize(attributes = {}) client = Client.find(attributes[:client_id]) attributes[:number] = client.last_invoice_number + 1 client.update_attributes(:last_invoice_number => client.last_invoice_number + 1) end end However, attributes[:client_id] isn't set when I call @client.invoices.build. How and when is the invoice's client_id initialized, and when can I use it to initialize the invoice's number? Can I get this logic into the model, or will I have to put it in the controller?

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  • NSPredicateEditorRowTemplate for date comparison

    - by Dave DeLong
    I'm building an NSPredicateEditor, and I want the ability to do advanced date comparison. I realize that I can build an NSPredicateEditorRowTemplate with a rightExpressionType of NSDateAttributeType, but the predicates I want to build need to be much more advanced than that. For example, I need to basic comparison like: dateKeypath < aDate dateKeypath <= aDate dateKeypath = aDate dateKeypath != aDate dateKeypath > aDate dateKeypath >= aDate These basic comparisons are quite easy to achieve, and I have these working. However, I also need to do comparisons like: dateKeypath isInTheLast n days (or weeks, months, years) dateKeypath isNotInTheLast n days (or weeks, months, years) dateKeypath between aDate and anotherDate How can I achieve these sorts of comparisons? I understand that I'll need to create a custom NSPredicateEditorRowTemplate, but I haven't found any clear documentation on how to achieve something like this. EDIT Bonus points are available for also knowing how to make these comparisons a full date-time (year-month-day-hour-minute-second) comparison (as NSDateAttributeType only has year-month-day granularity).

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  • Why do we need REST service security if we have HTTPS

    - by Vangel
    I refer to this excellent article http://www.thebuzzmedia.com/designing-a-secure-rest-api-without-oauth-authentication/ which speaks of amazon like security for web service. However I was asked a question in the team of why do we need it if we already use HTTPS. I was unable to answer as it really seems to me they may be right although gut tells me otherwise. Also is there places when providing REST services where HTTPS may not work? Like 3rd party websites? If anyone has experience in securing Web Services over the public interwebs please shed some light with your experience. Thanks in advance. EDIT: To clarify I am not speaking of user authentication but more of client authentication. The user authentication can be assumed to be plain text over HTTPS+ REST. My worry is that this still allows anyone to use the web service without my client to access it since everything is plai text although over HTTPS the client end point can still use my web service without the client application.

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  • Why is this variables declared as private and also readonly?

    - by Sergio Tapia
    In the following code: public class MovieRepository : IMovieRepository { private readonly IHtmlDownloader _downloader; public MovieRepository(IHtmlDownloader downloader) { _downloader = downloader; } public Movie FindMovieById(string id) { var idUri = ...build URI...; var html = _downloader.DownloadHtml(idUri); return ...parse ID HTML...; } public Movie FindMovieByTitle(string title) { var titleUri = ...build URI...; var html = _downloader.DownloadHtml(titleUri); return ...parse title HTML...; } } I asked for something to review my code, and someone suggested this approach. My question is why is the IHtmlDownloader variable readonly?

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  • 2D Game Dev Resources/Tutorials for Windows (Phone) 8 Development?

    - by Ilya Knaup
    I am really exited about the launch of windows 8, windows phone 8 so I decided to start learning how to develop games for them. I was even more exited when I found out that html, css, javascript can be used to develop apps for these platforms. I'm familiar with some standard html, css3 that i used to develop some websites, but I only know some VERY basics of javascript. I know things like HTML5 canvas and image sprites can be used to develop games, but I haven't found any tutorials that I understood good enough ;/ So I am asking you now. Can you suggest any good tutorials/resources (preferably video) that start from beginners level and go to advanced into game development with HTML5, CSS3 and JavaScript. It would be really good if such tutorials concentrated on game development for mobile phones (e.g. detecting when user touches the screen, using optimised images for hi res and standard displays, adopting to screen size etc) Oh.. and I forgot to mention that I am only interested in 2d game development.

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  • Doubt regarding search engine/plugin(One present on the website itself)

    - by Ravi Gupta
    I am new to web development and trying to study various types of websites as case study. Right now my focus is on how search engines works for an eCommerce website. I know basic functioning for a search engine, i.e. crawl web pages, index them and the display the results using those indexes. But I got little confuse in case of an eCommerce website. Don't you think that it would be better if a search engine instead of crawling the web pages containing products, it should directly crawl the database and index the products stored in the database? And when a user search for any product, it will simply give us the rows of the table which matches the user query? If this is not the case, can someone please explain how the usual method works on eCommerce website?

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  • C# System.Diagnostics.Debugger.Debug() stopped working

    - by Andrew Miner
    I'm working on a program which uses the System.Diagnostics.Debugger.Break() method to allow the user to set a breakpoint from the command-line. This has worked fine for many weeks now. However, when I was working on fixing a unit test today, I tried to use the debug switch from the command-line, and it didn't work. Here's what I've tried: I've confirmed that the Debug() method is really being called (by putting a System.Console.WriteLine() after it) I've confirmed that the build is still in Debug I've done a clean build I've restarted Product Studio A quick Google search didn't reveal anything, and the API documentation for .Net doesn't mention anything about this function not performing correctly. So... any ideas?

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  • On-Site Factors that Affect CPC

    - by ashes999
    I have a few websites on various niche topics, all running Adsense. The most promising one currently has a CPC that hovers around $1; the rest have CPCs of $0.25-$0.50. I'm curious to know what on-site factors affect CPC. That is to say, what I can do, legally (in white-hat compliance) to increase my CPC? Some factors that affect CPC but are not within my control (and therefore, beyond the scope of my question -- they're just examples) include: What advertisers are paying for keywords on my site What pages people are landing on etc.

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  • How to learn PHP effectively?

    - by Goma
    A dozen of bad tutorials out there that teach you bad habits especially when we speak about PHP. I want to learn how to avoid the things that can lead me to develop inefficient web applications. I like to learn from videos but most videos I've found on the internet are provided by people who do not follow good practices. My second option is to learn from books but I did not find a good book for starters in PHP! It would be very helpful for me if you can tell me about your story in learning PHP, what are things that I should avoid? How to learn about PHP security from the beginning to avoid unlearn something later on?. Please provide links to books, websites that provide high quality video tutorials for PHP, and you tips for a good start!

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  • Why do external Java libraries paths have to be refreshed in eclipse between starts?

    - by Jason
    For my school projects, I use the joda-time API for generating timestamps that are used for file names and logging. Getting eclipse to recognize the library is no problem. However, when I start eclipse between reboots, I get the red X in the project tree because the external API cannot be found, even though the file path has not changed. So each time, I have to go to the Libraries tab in Build Path to re-target the API. Frankly, this is getting to be a PIMA. So is there any way to have the path be permanent, so I don't have to do the Build Path rigmarole all the time?

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  • Software development, basics of design, conventions and scalability

    - by goce ribeski
    I need to improve my programming skills in order to achieve better scalability for the software I'm working on. Purpose is to learn the rules of adding new modules and features, so when it comes to maintaining existing ones there is some concept. So, I'm looking for a good book, tutorial or websites where I can continue to read about this. Currently, what I know and what I do is: to design relational database(3NF), make separate class for each table put that in MVC implement modular programming ...write code and hope for the best... I presume that next things I need to learn more deeply are: programming codex(naming, commenting, conventions...), organize functions building interfaces organizing custom made libraries, organizing API that I'm using, documenting, team work... ... At last what my job is, it does't need to affect your answer, PHP CodeIgniter developer.

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  • Consuming ASMX and WCF Services using jQuery

    - by bipinjoshi
    In the previous part I demonstrated how jQuery animations can add some jazz to your web forms. Now let's see one of the most important feature of jQuery that you will probably use in all data driven websites - accessing server data. In the previous articles you used jQuery methods such as $.get() to make a GET request to the server. More powerful feature, however, is to make AJAX calls to ASP.NET Web Services, Page Methods and WCF services. The $.ajax() method of jQuery allows you to access these services. In fact $.get() method you used earlier internally makes use of $.ajax() method but restricts itself only to GET requests. The $.ajax() method provides more control on how the services are called.http://www.bipinjoshi.net/articles/479571df-7786-4c50-8db6-a798f195471a.aspx

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  • 3 Ways to Normalize Sound Volume on Your PC

    - by Chris Hoffman
    If you’re constantly adjusting your computer’s volume while you watch videos or play music, there’s a better way. You can set a consistent volume level, either Windows-wide or in a specific program like VLC or your music player. Many applications have “volume normalization” or “loudness equalization” features built-in, including Windows itself. These features are often somewhat hidden and off the beaten path, so you won’t find them unless you go looking for them. HTG Explains: Why You Only Have to Wipe a Disk Once to Erase It HTG Explains: Learn How Websites Are Tracking You Online Here’s How to Download Windows 8 Release Preview Right Now

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  • Process for linking static ObjC libraries in XCode

    - by madmik3
    I'm trying to link to a static library and I keep getting linker errors. I've found a few sites that post examples but I have not been able to see what I am doing wrong. First I create a project that will link to my lib add existing files find my .xcodeproj file select "Copy items into destination groups folder"... Select my host project as Add To Targets. Then I add a direct dependency to my host app expand targets double click MyHost.app click + under direct dependencies select my lib Then I set build flags double click MyHost application icon in Groups and Files. click the build tab then I set the OtherLinerFlag to -ObjC then I set Header Search Paths to my header file location for my static library. I pass the compile stage but any classes in my static lib cause linker error: literal-pointer@_OBJC@_cls_refs@SomeClass in MyHost.o thanks!

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  • Is 301 redirect sufficient to solve WWW and HTTP/S duplication?

    - by Thomas Ojo
    I was reading about this article - SEO preference for WWW or HTTP:// protocol redirection? Do www websites rank better than NON-www? I have same problem but I needed a help on this further. What about https:// How will this be treated? Is the redirect 301 sufficient to solve the problem? I have a SEO company that says if possible, i should not have redirect but I don't think this is visible? Does permanent redirect in any way have effect on SEO services if properly done?

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  • Loading jar file using JCL(JarClassLoader ) : classpath in manifest is ignored ..

    - by Xinus
    I am trying to load jar file using JCL using following code FileInputStream fis = new FileInputStream(new File( "C:\\Users\\sunils\\glassfish-tests\\working\\test.jar") ); JarClassLoader jc = new JarClassLoader( ); jc.add(fis); Class main = jc.loadClass( "highmark.test.Main" ); String[] str={}; main.getMethod("test").invoke(null);//.getDeclaredMethod("main",String[].class).invoke(null,str); fis.close(); But when I try to run this program I get Exception as Exception in thread "main" java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at Main.main(Main.java:21) Caused by: java.lang.RuntimeException: Embedded startup not found, classpath is probably incomplete at org.glassfish.api.embedded.Server.<init>(Server.java:292) at org.glassfish.api.embedded.Server.<init>(Server.java:75) at org.glassfish.api.embedded.Server$Builder.build(Server.java:185) at org.glassfish.api.embedded.Server$Builder.build(Server.java:167) at highmark.test.Main.test(Main.java:33) ... 5 more According to this it is not able to locate class, But when I run the jar file explicitly it runs fine. It seems like JCL is ignoring other classes present in the jar file, MANIFEST.MF file in jar file shows: Manifest-Version: 1.0 Class-Path: . Main-Class: highmark.test.Main It seems to be ignoring Class-Path: . , This jar file runs fine when I run it using Java explicitly, This is just a test, in reality this jar file is coming as a InputStream and it cannot be stored in filesystem, How can I overcome this problem , Is there any workaround ? Thanks for any help . UNDATE: Here is a jar Main class : package highmark.test; import org.glassfish.api.embedded.*; import java.io.*; import org.glassfish.api.deployment.*; import com.sun.enterprise.universal.io.FileUtils; public class Main { public static void main(String[] args) throws IOException, LifecycleException, ClassNotFoundException { test(); } public static void test() throws IOException, LifecycleException, ClassNotFoundException{ Server.Builder builder = new Server.Builder("test"); Server server = builder.build(); server.createPort(8080); ContainerBuilder containerBuilder = server.createConfig(ContainerBuilder.Type.web); server.addContainer(containerBuilder); server.start(); File war=new File("C:\\Users\\sunils\\maventests\\simple-webapp\\target\\simple-webapp.war");//(File) inputStream.readObject(); EmbeddedDeployer deployer = server.getDeployer(); DeployCommandParameters params = new DeployCommandParameters(); params.contextroot = "simple"; deployer.deploy(war, params); } }

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  • How can I monitor a website for malicious changes to the files

    - by user41421
    I had an occasion recently where our website was compromised - a link farm was added to a couple of the pages on one occasion, and on another occasion, a large and nasty aspx file was put on the server. I won't mention the host's name (Hostway), but I was pretty annoyed that someone was able to do this. No, it wasn't a leaky password - around 10 sites hosted by HW with consecutive IP addresses got trashed. Anyway. What I need is a utility or service (preferably free) that takes a snapshot of my websites contents, and then regularly monitors the files (size and datestamp) for unauthorized changes or additions, and alerts me. I've used web services that monitor one file for changes, but I'm looking for something a bit more aggressive.

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  • Xcode5 post-archive script for Sparkle package no longer works

    - by Flyingdiver
    Xcode 5 seems to have changed the way it stores the build application package (xxx.app) such that ditto no longer works. In the ../BuildProductsPath/Release/ directory, the app is actually a symlink to .../InstallationBuildProductsLocation/Applications/... MyApp.app - ~/Library/Developer/Xcode/DerivedData/MyApp-emwilkqhlayanxahjpexlpbbkato/Build/Intermediates/ArchiveIntermediates/MyApp/InstallationBuildProductsLocation/Applications/MyApp This breaks the ditto command I was using to create a zip file of the application to put on my Sparkle update server. Anyone have an updated script for building the Sparkle XML and ZIP files? Or know what environment variable I need to use to locate my actual binary after the Archive phase?

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  • Share links with <script src=""> SEO

    - by gansbrest
    Hi, I would like to create a share link to my website using javascript: script src="[url-to-my-script]" Basically the main idea behind this is to render HTML block with an image and link to the website. By using JavaScript approach I can control the look and feel of that link + potentially I could change the link html in the future without touching partner websites. The only potential problem I see with this approach is SEO. I'm not sure if google will be able to index that link to my website, since it's generated by javascript.

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  • Eclipse hangs when rebuilding after the addition of an external JAR file.

    - by celestialorb
    I'm fairly new to Eclipse so if this is something simple I apologize, however when I attempt to add an external JAR file to my build path (specifically the "rt.jar" file which contains certain tools that I require) and then rebuild my project, Eclipse will hang at the end of the Build process. It'll get to 100% then just hang there using 100% of one of my CPU cores. At first I thought it may have been due to the relatively large size of the rt.jar file, but I tried using smaller JAR files and it still hung at 100%. Any help would be greatly appreciated! If there is something wrong with using the rt.jar file does anyone know of another JAR file that contains both tools for dealing with SOAP requests as well as XML/DOM manipulation? Thanks again!

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  • Disable incognito in chrome or chromium

    - by TheIronKnuckle
    I'm addicted to certain websites to the point where it's interfering with my life regularly and sick of it. I want to install website blockers that aren't easy to circumvent. In Chrome, incognito mode is easily accessible with a ctrl-shift-n. That is ridiculous. Whenever I feel an urge to go on an addictive website, it doesn't matter what blockers and regulators I've got installed; three keys can get round them in a second. Simply uninstalling chrome isn't an option either, as it's way too easy to sudo apt-get install it right back. So yes, I want to disable incognito mode completely (and if possible making it totally impossible to get it back). I note that some guy has figured out how to do it on windows with a registry entry: http://wmwood.net/software/incognito-gone-get-rid-of-private-browsing/ If it can be done on windows it can be done on ubuntu!

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  • How to Restrict Android App Permissions

    - by Chris Hoffman
    Android forces you to agree to every permission an app wants, assuming you want to use the app. After rooting your device, you can manage permissions on a per-app basis. Restricting permissions allows you to protect your contacts and other private data from apps that demand access you’d rather not allow. Many apps will continue working properly after you revoke the permissions. HTG Explains: What Is RSS and How Can I Benefit From Using It? HTG Explains: Why You Only Have to Wipe a Disk Once to Erase It HTG Explains: Learn How Websites Are Tracking You Online

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  • GWT and a jaxb objects

    - by arinte
    I am trying to use GWT to build objects on the client side that would be sent to a web service elsewhere. These objects are generate through JAX-WS which I am pretty sure uses jaxb to build objects from the xsds that are in the wsdl. Anyhow, GWT was supposed to be able to support this by ignoring annotations or whatever, but it isn't working for me. Here is one of the errors that I am getting: Line 4: The import javax.xml.bind cannot be resolve I am using GWT 2 and the Google plugin for Eclipse.

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