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• Magento MAGMI: Product attributes (custom options) not showing up in import

  - by Rodgers and Hammertime

  When importing a CSV into Magento with the MAGMI importing tool, I am unable to import Custom Options (as in size: smalee/medium/large). The import manages to put in the basic products, but the Custom Options don't transfer accross. By custom options I mean the fields Title, Input Type, Is Required, Sort Order Title, Price, Price Type, SKU, Sort Order Title, Price, Price Type, SKU, Sort Order Title, Price, Price Type, SKU, Sort Order and so on ... Found in the custom options menu... Even using the example CSV from the MAGMI SourceForge Wiki: sku,name,description,price,Size:drop_down:1 T-Shirt1,T-Shirt,A T-Shirt,5.00,Small|Medium|Large T-Shirt2,T-Shirt2,Another T-Shirt,6.00,XS|S|M|L|XL ...it fails to import the attributes. So i'm simply using MAGMI with the supplied example data from SourceForge on a blank magento product list, and it doesn't transfer properly. Can anyone shed any light on what might be wrong? I am using Magento ver. 1.6.1.0 if that changes anything. Thanks.

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• Kill a node in dojo.dnd.source ?

  - by Soulhuntre

  Related to my SO issue at http://stackoverflow.com/questions/3010996/dojo-extending-dojo-dnd-source-move-not-happening-ideas/3012518#3012518 I am now almost done. I have a dnd.Source derived class - we can consider it a dnd.Source for now, that has within it a node that has a specific class. function declare_mockupSmartDndUl(){ dojo.require("dojo.dnd.Source"); dojo.provide("mockup.SmartDndUl"); dojo.declare("mockup.SmartDndUl", dojo.dnd.Source, { markupFactory: function(params, node){ //params._skipStartup = true; return new mockup.SmartDndUl(node, params); }, onDropExternal: function(source, nodes, copy){ console.debug('onDropExternal called...'); // dojo.destroy(this.getAllNodes().query(".dndInstructions")); this.inherited(arguments); var x = source.getAllNodes().length; if( x == 0 ){ newnode = document.createElement('li'); newnode.innerHTML = "Hello!"; dojo.addClass(newnode,"dndInstructions"); source.node.appendChild(newnode); } return true; // return dojo.dnd.Source.prototype.onDropExternal.call(this, source, nodes, copy); } }); } You can see the place I mean from the dojo.destroy that is commented out because it was totally n00b :) If I do this var y = this.getAllNodes().query(".dndInstructions") the nodelist in y absolutely does contain the node. Now I need t kill it, nuke it - get it out of there. Out of the dnd.Source, out of the DOM... gone. Any ideas how to do it safely? It will be the ONLY node in the list at the time we do whatever it is we are goign to do to kill the thing. Thanks!

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• That assembly does not allow partially trusted callers although the zone is fully trusted.

  - by Frederik Gheysels

  Since yesterday, I receive a security exception when I want to run a unit-test from within VS.NET 2008. The error goes like this: SecurityException: that assembly does not allow partially trusted callers ... The assembly that failed was : file:///S:/MyProject/MyAssembly.dll The S: drive is a mapped drive which points to a physical location on my disk. What I find very strange, is that this used to work for months previously. I mean, I did this all the time. In order to get this to work, I 've created a new security zone with the caspol utility in order to give this S: network share drive FullTrust. In other words, when I run caspol -m -lg I see this (I removed the other zones for the sake of brevity): 1.2. Zone - Intranet: LocalIntranet 1.2.1. All code: Same site Web 1.2.2. All code: Same directory FileIO - 'Read, PathDiscovery' 1.2.3. Url - file://R:/*: FullTrust 1.2.4. Url - file://S:/*: FullTrust 1.2.5. Url - file:///S:/*: FullTrust I've added the 1.2.5 zone just recently because the error that was given, mentionned file:///s:/.... Any ideas ? Could it be that this has something to do with the installation of VS.NET 2010 or the .NET Framework version 4.0 ?

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• Advice using leaks in instruments for noobs

  - by Gyozo Kudor

  Hello I am pretty new to iphone development. I have run my app for the first time using the "Leaks" from "Instruments". It shows me several leaks around 20 the smallest is 32 bytes and there is one with 1KB. I have followed the memory management guidelines, (i (think i) understand how and when to use release, not to use it when adding to autorelease pools, for every copy, retain, init there should be a release,... etc). I don't think I understand the output of the Leaks in instruments. What does "Responsible library" and "Responsible frame" mean. Because there are some classes and methods i never used directly. Are there any good tutorials for debugging memory leaks in instruments or other advice you can give me regarding leaks. Thanks in advance. Here are the largest 2 leaks. Leaked Object # Address Size Responsible Library Responsible Frame Malloc 1.00 KB 0x4827400 1024 CFNetwork std::vector *, std::allocator * ::reserve(unsigned long) // i have no idea what this is. Leaked Object # Address Size Responsible Library Responsible Frame Malloc 128 Bytes 5 640 UIKit UIImagePickerLoadPhotoLibraryIfNecessary // so this means UIImagePicker is leaking memory? The first leak i get Leaked Object # Address Size Responsible Library Responsible Frame Malloc 128 Bytes 0x442dfd0 128 UIKit UIKeyboardInputManagerClassForInputMode I don't understand any of those.

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• Fancybox troubles

  - by Abs

  Hello all, I am trying to implement a fancybox. http://fancybox.net/howto I want to call this function on an an element. Full JS file. http://fancybox.net/js/fancybox/jquery.fancybox-1.2.1.js $.fn.fancybox = function(settings) { I have done this: $(document).ready(function() { $("a#inline").fn.fancybox(); }); However, I keep getting this error (through firebug): $("a#inline").fn is undefined [Break on this error] $("a#inline").fn.fancybox(); What does this mean? I am basically having instantiating problems. Please help. EDIT The HTML file: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Technologies</title> <link href="style.css" rel="stylesheet" type="text/css" /> <script type="text/javascript" src="fancy/jquery-1.3.2.min.js"></script> <script type="text/javascript" src="fancy/jquery.fancybox-1.2.1.js"></script> <link rel="stylesheet" href="fancy/fancybox.css" type="text/css" media="screen" /> <script type="text/javascript"> $(document).ready(function() { $("a#inline").fancybox(); }); </script> </head> <body> <?php include_once ("header.php"); ?> <div id="channel_calc"> How many Channels do I need? <span id="yellow"><a id="inline" href="#ddm">Channel Calculator</a></span> </div>

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• PyQt and unittest - how to handle signals and slots

  - by Einar

  Hello, some small application I'm developing uses a module I have written to check certain web services via a REST API. I've been trying to add unit tests to it so I don't break stuff, and I stumbled upon a problem. I use a lot of signal-slot connections to perform operations asynchronously. For example a typical test would be (pseudo-Python), with postDataDownloaded as a signal: def testConnection(self): "Test connection and posts retrieved" def length_test(): self.assertEqual(len(self.client.post_data), 5) self.client.postDataReady.connect(length_test) self.client.get_post_list(limit=5) Now, unittest will report this test to be "ok" when running, regardless of the result (as another slot is being called), even if asserts fail (I will get an unhandled AssertionError). Example when deliberatiely making the test fail: Test connection and posts retrieved ... ok [... more tests...] OK Traceback (most recent call last): [...] AssertionError: 4 != 5 The slot inside the test is merely an experiment: I get the same results if it's outside (instance method). I also have to add that the various methods I'm calling all make HTTP requests, which means they take a bit of time (I need to mock the request - in the mean time I'm using SimpleHTTPServer to fake the connections and give them proper data). Is there a way around this problem?

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• Qt: Force QWebView to click on a web element, even one not visible on the window

  - by Pirate for Profit

  So let's say I'm trying to click a link in the QWebView, here is what I have: // extending QWebView void MyWebView::click(const QString &selectorQuery) { QWebElement el = this->page()->mainFrame()->findFirstElement(selectorQuery); if (!el) return; el.setFocus(); QMouseEvent pressEvent(QMouseEvent::MouseButtonPress, el.geometry().center(), Qt::MouseButton::LeftButton, Qt::LeftButton, Qt::NoModifier); QCoreApplication::sendEvent(this, &pressEvent); QMouseEvent releaseEvent(QMouseEvent::MouseButtonRelease, el.geometry().center(), Qt::MouseButton::LeftButton, Qt::LeftButton, Qt::NoModifier); QCoreApplication::sendEvent(this, &releaseEvent); } And you call it as so: myWebView->click("a[href]"); // will click first link on page myWebView->click("input[type=submit]"); // submits a form THE ONLY PROBLEM IS: if the element is not visible in the window, it is impossible to click. What I mean is if you have to scroll down to see it, you can't click it. I imagine this has to do with the geometry, since the element doesn't show up on the screen it can't do the math to click it right. Any ideas to get around this? Maybe some way to make the window behave like a billion x billion pixels but still look 200x200?

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• WCF configuration file: why do we need clientBaseAddress in Binding section?

  - by Captain Comic

  Hi, There are three sections in WCF configuration for service client: Look at bindings = clientBaseAddress Why do we need to specify callback address? Is this field required? Why .NET is unable to determine the address of client? Does it mean that i can specify callback service that is located on some other machine? <configuration> <system.serviceModel> <client> <endpoint address= </client> <bindings> <wsDualHttpBinding> <binding name= clientBaseAddress= maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" </binding> </wsDualHttpBinding> </bindings> <behaviors> <endpointBehaviors> <behavior name=> </behavior> </endpointBehaviors> </behaviors> </system.serviceModel>

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• How to deploy a WPF 4 Full Trust XBAP an on intranet?

  - by sparks

  I'm having trouble running a full trust WPF 4 XBAP (browser application), created with Visual Studio 2010, from my intranet. I do not get a ClickOnce elevation prompt, as described in ScottGu's post on WPF 4: Full Trust XBAP Deployment Starting in WPF 4, the ClickOnce elevation prompt is also enabled for XAML Browser Applications (XBAPs) in Intranet and Trusted Zones, making it easier to deploy full-trust XBAPs. For XBAPs that require security permissions greater than the minimum code access security (CAS) permission grantset of the Intranet and Trusted Zones, the user will be able to click 'Run' on the ClickOnce elevation prompt when they navigate to the XBAP to allow the XBAP to run with the requested permissions. Instead, I get the "Trust Not Granted" message. I'm running the application in two ways; in both cases, I get the "Trust Not Granted" message. First, I'm launching the application by double-clicking on the xbap file from my NAS on the local network. Secondly, I'm also trying to launch the application when it is hosted on a website via IIS from the same machine. Are both of these scenarios considered to be run from an "intranet?" Or does "intranet" mean some in particular here? Or am I doing something completely wrong? Of note, I am able to launch the application without problem when I simply double-click the xbap from my local computer. The xbap in question was created specifically to test the ClickOnce elevation prompt. It was created with Visual Studio 2010 as a WPF Browser Application. The only change I made was to change this to a full trust application (My Project Security tab This is a full trust application). In the publish wizard, I am choosing the following: Where do you want to publish the application? - I chose to publish to a local directory How will user install the application? - I chose "From a CD-ROM or DVD-ROM" Will the application be available offline - All choices were grayed out

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• Is background tasks the solution for this problem?

  - by Trinca

  Hi. I need to develop an enterprise app that monitors the network traffic. Basically it detects if the user is in wi-fi or cellular data and save the amount of bytes was sent and received in a period of time. I saw an App at the AppStore that do exactly this job. Detecting wi-fi or cellular data is quite simple using the Reachability Sample provided by Apple. My problem is to keep monitoring the bytes sent and received while the app is in background. As it is an enterprise App, I used UIBackgroundModes "voip" to avoid the app to be terminated. I also installed the setKeepAliveTimeout method and I'm able to see the logs each 10 minutes, BUT only for 10 seconds after the method runs. I mean, setKeepAliveTimeout brings my App to run a Timer for 10 seconds each 1o minutes. I'm thinking wether or not a task in background is the best solution for my problem. I'll appreciate any comments. EDIT: Ok guys. Thats the perfect way to do it. First of all you must read this: http://www.christian-fries.de/blog/files/tag-ios.html I tried this and it works really fine. All we need to do is to create a second thread detached from the main one. This way we have a continuos threading running forever. You must see the GCD docs at Apple's website also. Second thing you should consider for an enterprise App is to set it up as a voip App, this way iOS will put your App running even after a reboot. It's a special behavior iOS has to keep voip Apps running. Thats it guys. I hope it can help you.

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• Large number of simultaneous long-running operations in Qt

  - by Hostile Fork

  I have some long-running operations that number in the hundreds. At the moment they are each on their own thread. My main goal in using threads is not to speed these operations up. The more important thing in this case is that they appear to run simultaneously. I'm aware of cooperative multitasking and fibers. However, I'm trying to avoid anything that would require touching the code in the operations, e.g. peppering them with things like yieldToScheduler(). I also don't want to prescribe that these routines be stylized to be coded to emit queues of bite-sized task items...I want to treat them as black boxes. For the moment I can live with these downsides: Maximum # of threads tend to be O(1000) Cost per thread is O(1MB) To address the bad cache performance due to context-switches, I did have the idea of a timer which would juggle the priorities such that only idealThreadCount() threads were ever at Normal priority, with all the rest set to Idle. This would let me widen the timeslices, which would mean fewer context switches and still be okay for my purposes. Question #1: Is that a good idea at all? One certain downside is it won't work on Linux (docs say no QThread::setPriority() there). Question #2: Any other ideas or approaches? Is QtConcurrent thinking about this scenario? (Some related reading: how-many-threads-does-it-take-to-make-them-a-bad-choice, many-threads-or-as-few-threads-as-possible, maximum-number-of-threads-per-process-in-linux)

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• Applying business logic to form elements in ASP.NET MVC

  - by Brettski

  I am looking for best practices in applying business logic to form elements in an ASP.NET MVC application. I assume the concepts would apply to most MVC patterns. The goal is to have all the business logic stem from the same place. I have a basic form with four elements: Textbox: for entering data Checkbox: for staff approval Checkbox: for client approval Button: for submitting form The textbox and two check boxes are fields in a database accessed using LINQ to SQL. What I want to do is put logic around the check boxes on who can check them and when. True table (little silly but it's an example): when checked || may check Staff || may check Client Staff | Client || Staff | Client || Staff | Client 0 0 || 1 0 0 1 0 1 || 0 0 0 1 1 0 || 1 0 0 1 1 1 || 0 0 0 1 There are to security roles, staff and client; a person's role determines who they are, the roles are maintained in the database alone with current state of the check boxes. So I can simply store the users roll in the view class and enable and disable check boxes based on their role, but this doesn't seem proper. That is putting logic in UI to control of which actions can be taken. How do I get most of this control down into the model? I mean I need to control which check boxes are enabled and then check the results in the model when the form is posted, so it seems the best place for it to originate. I am looking for a good approach to constructing this, something to follow as I build the application. If you know of some great references which explain these best practices that is really appreciated too.

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• Spatial Rotation in Gmod Expression2.

  - by Fascia

  I'm using expression2 to program behavior in Garry's mod (http://wiki.garrysmod.com/?title=Wire_Expression2) Okay so, to set the precedent. In Gmod I have a block and I am at a complete loss of how to get it to rotate around the 3 up, down and right vectors (Which are local. ie; if I pitch it 45 degrees the forward vector is 0.707, 0.707, 0). Essentially, From the 3 vectors I'd like to be able to get local Pitch/Roll/Yaw. By Local Pitch Roll Yaw I mean that they are completely independent of one another allowing true 3d rotation. So for example; if I place my craft so its nose is parallel to the floor the X,Y,Z would be 0,0,0. If I turn it parallel to the floor (World and Local Yaw) 90 degrees it's now 0, 0, 90. If I then pitch it (World Roll, Local Pitch) it 180 degrees it's now 180, 0, 90. I've already explored quaternions however I don't believe I should post my code here as I think I was re-inventing the wheel. I know I didn't explain that well but I believe the problem is pretty generic. Any help anyone could offer is greatly appreciated. Oh, I'd like to avoid gimblelock too. Essentially calculating the rotation around each of the crafts up/forward/right vectors using the up/forward/right vectors. To simply the question a generic implementation rather than one specific to Gmod is absolutely fine.

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• java RMI newbie-- some basic questions about SSL and auth/.rate limiting an RMI service

  - by Arvind

  I am trying to work to secure a java based RMI service using SSL. I have some basic questions about the capabilities of using SSL. Specifically, from what I understand, the client and server connecting via SSL will need to have appropriate credential certificates in both client and server, for a client to be granted access to the server. Am I correct in my understanding? Also, what I want to know is, can a person who is already using my RMI service and has access to a client machine , make a copy of the certificate in the client machine to other client machines-- and then invoke my RMI service from those other machines as well? How do I prevent such a situation from occurring? I mean, in a REST API you can use OAuth authentication, can we have some kind of authentication in an RMI Service? Also, can I possibly limit usage of the RMI service? For eg, a specific client may be allowed to make only 5000 calls per day to my RMI service, and if he makes more calls the calls occurring after the 5000 calls limit are all denied? How do I do such rate limiting and/or authentication for my RMI Service?

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• "Permission denied to access property 'href' from a non-chrome context" in JavaScript and OpenLayers

  - by Mark Iliffe

  This is really two questions one leading into the other. Firstly what does 'Permission denied to access property 'href' from a non-chrome context' actually mean? Secondly I am using overlays in OpenLayers and wish to change the opacity of said layers, this is where this error is being thrown the code of which is here... <input id='opacity' value="1.0" onChange="changeOpacity()"> Of which changeOpacity() is the following function... function changeOpacity() { var newOpacity = parseFloat(OpenLayers.Util.getElement('opacity').value); newOpacity = Math.min(1.0, Math.max(0.1, newOpacity)); OpenLayers.Util.getElement('opacity').value = newOpacity; for (var i=0; i<images.length; i++) { layers[images[i]].setOpacity(newOpacity); } } which throws the error at "var href = originalElement.href;" here... function mD(e) { //what is originalElement/srcElement/originalTarget? var originalElement = e.srcElement || e.originalTarget; var href = originalElement.href; if (originalElement.nodeName == "A" && href.match("http://www.openstreetmap.org/browse/")) { href = href.replace('http://www.openstreetmap.org/browse/','http://www.openstreetmap.org/api/0.6/'); if (gml) { map.removeLayer(gml); } //$("status").innerHTML = 'loading'; } gml = new OpenLayers.Layer.GML("OSM", href, {format: OpenLayers.Format.OSM}); map.addLayer(gml); gml.preFeatureInsert = style_osm_feature; var sf = new OpenLayers.Control.SelectFeature(gml, {'onSelect': on_feature_hover}); map.addControl(sf); sf.activate(); return false; } } Any help/ideas is great appreciated! I am using firefox 3.5.9 and firebug 1.5.4

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• Qt Object Linker Problem " undefined reverence to vtable"

  - by Thomas

  This is my header: #ifndef BARELYSOCKET_H #define BARELYSOCKET_H #include <QObject> //! The First Draw of the BarelySocket! class BarelySocket: public QObject { Q_OBJECT public: BarelySocket(); public slots: void sendMessage(Message aMessage); signals: void reciveMessage(Message aMessage); private: // QVector<Message> reciveMessages; }; #endif // BARELYSOCKET_H This is my class: #include <QTGui> #include <QObject> #include "type.h" #include "client.h" #include "server.h" #include "barelysocket.h" BarelySocket::BarelySocket() { //this->reciveMessages.clear(); qDebug("BarelySocket::BarelySocket()"); } void BarelySocket::sendMessage(Message aMessage) { } void BarelySocket::reciveMessage(Message aMessage) { } I get the Linker Problem : undefined reference to 'vtable for barelySocket' This should mean, i have a virtual Function not implemented. But as you can see, there is non. I comment the vector cause that should solve the Problem, but i does not. The Message is a complex struct, but even converting it to int did not solve it. I searched Mr G but he could not help me. Thank you for your support, Thomas

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• MySQL performance

  - by kapil.israni

  Hi, I have this LAMP application with about 900k rows in MySQL and I am having some performance issues. Background - Apart from the LAMP stack , there's also a Java process (multi-threaded) that runs in its own JVM. So together with LAMP & java, they form the complete solution. The java process is responsible for inserts/updates and few selects as well. These inserts/updates are usually in bulk/batch, anywhere between 5-150 rows. The PHP front-end code only does SELECT's. Issue - the PHP/SELECT queries become very slow when the java process is running. When the java process is stopped, SELECT's perform alright. I mean the performance difference is huge. When the java process is running, any action performed on the php front-end results in 80% and more CPU usage for mysqld process. Any help would be appreciated. MySQL is running with default parameters & settings. Software stack - Apache - 2.2.x MySQL -5.1.37-1ubuntu5 PHP - 5.2.10 Java - 1.6.0_15 OS - Ubuntu 9.10 (karmic)

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• simple Stata program

  - by Cyrus S

  I am trying to write a simple program to combine coefficient and standard error estimates from a set of regression fits. I run, say, 5 regressions, and store the coefficient(s) and standard error(s) of interest into vectors (Stata matrix objects, actually). Then, I need to do the following: Find the mean value of the coefficient estimates. Combine the standard error estimates according to the formula suggested for combining results from "multiple imputation". The formula is the square root of the formula for "T" on page 6 of the following document: http://bit.ly/b05WX3 I have written Stata code that does this once, but I want to write this as a function (or "program", in Stata speak) that takes as arguments the vector (or matrix, if possible, to combine multiple estimates at once) of regression coefficient estimates and the vector (or matrix) of corresponding standard error estimates, and then generates 1 and 2 above. Here is the code that I wrote: (breg is a 1x5 vector of the regression coefficient estimates, and sereg is a 1x5 vector of the associated standard error estimates) mat ones = (1,1,1,1,1) mat bregmean = (1/5)*(ones*breg’) scalar bregmean_s = bregmean[1,1] mat seregmean = (1/5)*(ones*sereg’) mat seregbtv = (1/4)*(breg - bregmean#ones)* (breg - bregmean#ones)’ mat varregmi = (1/5)*(sereg*sereg’) + (1+(1/5))* seregbtv scalar varregmi_s = varregmi[1,1] scalar seregmi = sqrt(varregmi_s) disp bregmean_s disp seregmi This gives the right answer for a single instance. Any pointers would be great! UPDATE: I completed the code for combining estimates in a kXm matrix of coefficients/parameters (k is the number of parameters, m the number of imputations). Code can be found here: http://bit.ly/cXJRw1 Thanks to Tristan and Gabi for the pointers.

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• What are some strategies for maintaining a common database schema with a team of developers and no D

  - by Mahmoud Abdelkader

  I'm curious about how others have approached the problem of maintaining and synchronizing database changes across many (10+) developers without a DBA? What I mean, basically, is that if someone wants to make a change to the database, what are some strategies to doing that? (i.e. I've created a 'Car' model and now I want to apply the appropriate DDL to the database, etc..) We're primarily a Python shop and our ORM is SQLAlchemy. Previously, we had written our models in such a way to create the models using our ORM, but we recently ditched this because: We couldn't track changes using the ORM The state of the ORM wasn't in sync with the database (e.g. lots of differences primarily related to indexes and unique constraints) There was no way to audit database changes unless the developer documented the database change via email to the team. Our solution to this problem was to basically have a "gatekeeper" individual who checks every change into the database and applies all accepted database changes to an accepted_db_changes.sql file, whereby the developers who need to make any database changes put their requests into a proposed_db_changes.sql file. We check this file in, and, when it's updated, we all apply the change to our personal database on our development machine. We don't create indexes or constraints on the models, they are applied explicitly on the database. I would like to know what are some strategies to maintain database schemas and if ours is seems reasonable. Thanks!

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• Texture loading at joGL

  - by Nour

  hi I've been trying to load a bmp picture to use it as a texture at my program I've used a IOstream Class to extend DataInputStream to read the pixels at the photo with this code "based on a texture loader code for c++ " : //class Data members public static int BMPtextures[]; public static int BMPtexCount = 30; public static int currentTextureID = 0; //loading methode static int loadBMPTexture(int index, String fileName, GL gl) { try { IOStream wdis = new IOStream(fileName); wdis.skipBytes(18); int width = wdis.readIntW(); int height = wdis.readIntW(); wdis.skipBytes(28); byte buf[] = new byte[wdis.available()]; wdis.read(buf); wdis.close(); gl.glBindTexture(GL.GL_TEXTURE_2D, BMPtextures[index]); gl.glTexImage2D(GL.GL_TEXTURE_2D, 0, 3, width, height, 0, GL.GL_BGR, GL.GL_UNSIGNED_BYTE, buf); gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR); gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR); currentTextureID = index; return currentTextureID; } catch (IOException ex) { // Utils.msgBox("File Error\n" + fileName, "Error", Utils.MSG_WARN); return -1; } } and IOStream code : public class IOStream extends DataInputStream { public IOStream(String file) throws FileNotFoundException { super(new FileInputStream(file)); } public short readShortW() throws IOException { return (short)(readUnsignedByte() + readUnsignedByte() * 256); } public int readIntW() throws IOException { return readShortW() + readShortW() * 256 * 256; } void read(Buffer[] buf) { } } and the calling: GTexture.loadBMPTexture(1,"/BasicJOGL/src/basicjogl/data/Font.bmp",gl); after debugging I figured out that when it come to this line : IOStream wdis = new IOStream(fileName); an IOExeption occurred and it's a dispatchException .. what this impose to mean ?? and how can I solve it ? by the way i tried to : 1- use \ and \ and / and // 2- change the path of the photo and take all the path from c:\ to the photoname.bmp 3- rename the photo using numbers like 1.bmp but nothing seems to work :(

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• Java exception handling in non sequential tasks (pattern/good practice)

  - by Hernán Eche

  There are some task that should't be done in parallel, (for example opening a file, reading, writing, and closing, there is an order on that...) But... Some task are more like a shoping list, I mean they could have a desirable order but it's not a must..example in communication or loading independient drivers etc.. For that kind of tasks, I would like to know a java best practice or pattern for manage exceptions.. The java simple way is: getUFO { try { loadSoundDriver(); loadUsbDriver(); loadAlienDetectorDriver(); loadKeyboardDriver(); } catch (loadSoundDriverFailed) { doSomethingA; } catch (loadUsbDriverFailed) { doSomethingB; } catch (loadAlienDetectorDriverFailed) { doSomethingC; } catch (loadKeyboardDriverFailed) { doSomethingD; } } But what about having an exception in one of the actions but wanting to try with the next ones?? I've thought this approach, but don't seem to be a good use for exceptions I don't know if it works, doesn't matter, it's really awful!! getUFO { Exception ex=null; try { try{ loadSoundDriver(); }catch (Exception e) { ex=e; } try{ loadUsbDriver(); }catch (Exception e) { ex=e; } try{ loadAlienDetectorDriver(); }catch (Exception e) { ex=e; } try{ loadKeyboardDriver() }catch (Exception e) { ex=e; } close the file; if(ex!=null) { throw ex; } } catch (loadSoundDriverFailed) { doSomethingA; } catch (loadUsbDriverFailed) { doSomethingB; } catch (loadAlienDetectorDriverFailed) { doSomethingC; } catch (loadKeyboardDriverFailed) { doSomethingD; } } seems not complicated to find a better practice for doing that.. I still didn't thanks for any advice

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• uninstall string

  - by Sakhawat Ali

  Hi experts, I am developing an desktop based application using VB.NET, similar to add/remove program. everything was working fine until i start working on uninstall feature. Now what am i doing is that i get the uninstall string of the specific application from the registry and use System.Diagnostics.Process to run UninstallString. Dim proc As New Process() proc.StartInfo.FileName =UninstallString proc.Start() proc.WaitForExit() proc.Close() latter i found that it only work for straight file paths only, i mean with no command line argument like: C:\program files\someApp\uninstall.exe I make a list of list of all UninstallStrings of all application installed on my machine. i found few things like application installed using MSI, some were with rundll32 and few were with straight file path with some command argument like: My Silverlight SDK UninstallString, MSI Example MsiExec.exe /X{2012098D-EEE9-4769-8DD3-B038050854D4} My JetAudio UninstallString, RunDll32 Example RunDll32 C:\PROGRA~1\COMMON~1\INSTAL~1\engine\6\INTEL3~1\Ctor.dll,LaunchSetup "C:\Program Files\InstallShield Installation Information{91F34319-08DE-457A-99C0-0BCDFAC145B9}\Setup.exe" -l0x9 My Google Chrome UninstallString, straight file path with command argument example "C:\Program Files\Google\Chrome\Application\5.0.375.55\Installer\setup.exe" -uninstall The code i mentioned above does not work for these. i did some string parsing, separate two thing from UninstallString one is Filename and other is Arguments. like for MSI, filename is MSIEXEC.EXE and argument will be rest of the string, same for RunDLL32, same for straight file path with command argument. Now what am i facing is that, after every 2 or 3 days i come to know that this type of unistallstring is also not working. and why is that not working because it is a new type maybe abc C:\program files\someapp.exe -ddd so parse it too. is there any better way of doing that rather then parsing the string.

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• Java and tomcat vs ASP.NET and IIS

  - by Mark Cooper

  Until recently I'd considered myself to be a pretty good web programmer (coming up for 10yrs commercial experience on a variety of e-commerce, static and enterprise applications). I'm self taught and have always used the Microsoft product stack (ASP, ASP.NET)... My applications are always functional, relatively bug free, but have never been lightening quick. As a frequent web user I always found this to be the norm... how fast are the websites from the big tech players (eBay, Facebook, Microsoft, IBM, Dell, Telerik etc etc) - in truth none are particularly fast. I always attributed this to "the way things are with web apps"... ...then I cam across a product called Jira from atlasian and this has stopped me in my tracks... This application is fast, and I mean blindingly fast.. too fast to time the switches between pages, fully live content, lots of images and data and cross references etc etc... I run this on an intranet, with a large application DB, and this is running on a very normal server (single processor, SATA HDD, 8GB RAM). Am I missing something?? Are my programming techniques that bad?? I am wondering if this speed gain is down to it being written in Java and running on Tomcat. Does anyone have any benchmarks to compare JSP / ASP or Tomcat / IIS??? Thanks, Mark NOTE: this isn't a blatant plug for Jira. I don't work for them or have any affiliation to them... but I would like to be able to write applications like them :)

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• Is there an "embedded DBMS" to support multiple writer applications (processes) on the same db files

  - by Amir Moghimi

  I need to know if there is any embedded DBMS (preferably in Java and not necessarily relational) which supports multiple writer applications (processes) on the same set of db files. BerkeleyDB supports multiple readers but just one writer. I need multiple writers and multiple readers. UPDATE: It is not a multiple connection issue. I mean I do not need multiple connections to a running DBMS application (process) to write data. I need multiple DBMS applications (processes) to commit on the same storage files. HSQLDB, H2, JavaDB (Derby) and MongoDB do not support this feature. I think that there may be some File System limitations that prohibit this. If so, is there a File System that allows multiple writers on a single file? Use Case: The use case is a high-throughput clustered system that intends to store its high-volume business log entries into a SAN storage. Storing business logs in separate files for each server does not fit because query and indexing capabilities are needed on the whole biz logs. Because "a SAN typically is its own network of storage devices that are generally not accessible through the regular network by regular devices", I want to use SAN network bandwidth for logging while cluster LAN bandwidth is being used for other server to server and client to server communications.

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• Proggraming a VPN, Authontication stage - RFC not clear enough

  - by John

  I have a custom build of a unix OS. My task: Adding an IPSec to the OS. I am working on Phase I, done sending the first 2 packets. what I am trying to do now is making the Identefication Payload. I've been reading RFC 2409 (Apendix B) which discuss the keying materials (SKEYID, SKEYID_d, SKEYID_a, SKEYID_e and the IV making). Now, I use SHA1 for authontication and thus I use HMAC-SHA1 & my encryption algorithem is AES 256bit. The real problem is that the RFC is not clear enough of what should I do regarding the PRF. It says: "Use of negotiated PRFs may require the PRF output to be expanded due to the PRF feedback mechanism employed by this document." I use SHA1, does it mean I do not negotiate a PRF? In my opinion, AES is the only algorithm that needs expention (a fixed length of 256bit), so, do i need to expand only the SKEYID_e? If you happen to know a clearer, though relible, source then the RFC please post a link. Thanks in advance!

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