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  • Where to put a configuration file for an Axis2 web service?

    - by Jack BeNimble
    I'd like to have my Axis2 Web Service read from a configuration file, whose name is sent as a parameter to the service. Where is the best place to put this file? And How to best access it? Examples welcome. I've checked the current directory is the Apache/Tomcat/bin file, I could put it in the parent directory, or put it into a Apache/Tomcat/conf, although this looks like it's more reserved for apache configuration itself.

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  • Best way to install web applications (e.g. Jira) on Unixes?

    - by gineer
    Can you throw some points on how it is a best way, best practice to install web application on Unixes? Like: where to place app and its bases and so for, how to configure to be secure and easy to backup, etc For example I know such suggestion -- to set uniq user for each app. App in question is Jira on FreeBSD, but more general suggestions are also welcomed.

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  • JAVA: how to load database url from web.xml?

    - by user357255
    I'm using persistence API and want to load jdbc URL from web.xml. URL should be a context parameter of servlet. I can't find how to construct EntityManagerFactory not using persistence.xml. May be I should create PersistenceUnit in servlet and set some parameters? Can you give me some short example? Thank you

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  • PHP front-end and Java back-end for a web app?

    - by Raydon
    I'm designing a web application. I was wondering if it was feasible to design a php front end (using some php framework e.g. CakePHP), which stores and retrieves data to display to the user. Then develop a java backend which listens to the database for changes, and depending on what was changed, performs some actions and updates the database. Any thoughts on this type of implementation would be appreciated.

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  • can the web.config be changed so roles wouldn't work any more?

    - by Scott J.
    I have had two instances of this problem, first on my local computer, now on the main site. Users can log in to the site, but it doesn't seem to recognize their roles. When I log in (which the database still recognizes as having the role admin), the code does not recognize it as being in the admin role. If there are other web.configs in subfolders, would that cause the problem? What could possibly cause this issue? Thanks! scojomodena

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  • OpenGL or OpenGL ES

    - by zxspectrum
    What should I learn? OpenGL 4.1 or OpenGL ES 2.0? I will be developing desktop applications using Qt but I may start developing mobile applications in a few months, too. I don't know anything about 3D, 3D math, etc and I'd rather spend 100 bucks in a good book than 1 week digging websites and going through trial and error. One problem I see with OpenGL 4.1 is as far as I know there is no book yet (the most recent ones are for OpenGL 3.3 or 4.0), while there are books on OpenGL ES 2.0. On the other hand, from my naive point of view, OpenGL 4.1 seems like OpenGL ES 2.0 + additions, so it looks like it would be easier/better to first learn OpenGL ES 2.0, then go for the shader language, etc Please, don't tell me to use NeHe (it's generally agreed it's full of bad/old practices), the Durian tutorial, etc. Thanks

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  • How To Delete Top 100 Rows From SQL Server Tables

    - by Gopinath
    If you want to delete top 100/n records from an SQL Server table, it is very easy with the following query: DELETE FROM MyTable WHERE PK_Column IN(     SELECT TOP 100 PK_Column     FROM MyTable     ORDER BY creation    ) Why Would You Require To Delete Top 100 Records? I often delete a top n records of a table when number of rows in the are too huge. Lets say if I’ve 1000000000 records in a table, deleting 10000 rows at a time in a loop is faster than trying to delete all the 1000000000  at a time. What ever may be reason, if you ever come across a requirement of deleting a bunch of rows at a time, this query will be helpful to you. Join us on Facebook to read all our stories right inside your Facebook news feed.

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  • Unity: how to apply programmatical changes to the Terrain SplatPrototype?

    - by Shivan Dragon
    I have a script to which I add a Terrain object (I drag and drop the terrain in the public Terrain field). The Terrain is already setup in Unity to have 2 PaintTextures: 1 is a Square (set up with a tile size so that it forms a checkered pattern) and the 2nd one is a grass image: Also the Target Strength of the first PaintTexture is lowered so that the checkered pattern also reveals some of the grass underneath. Now I want, at run time, to change the Tile Size of the first PaintTexture, i.e. have more or less checkers depending on various run time conditions. I've looked through Unity's documentation and I've seen you have the Terrain.terrainData.SplatPrototype array which allows you to change this. Also there's a RefreshPrototypes() method on the terrainData object and a Flush() method on the Terrain object. So I made a script like this: public class AStarTerrain : MonoBehaviour { public int aStarCellColumns, aStarCellRows; public GameObject aStarCellHighlightPrefab; public GameObject aStarPathMarkerPrefab; public GameObject utilityRobotPrefab; public Terrain aStarTerrain; void Start () { //I've also tried NOT drag and dropping the Terrain on the public field //and instead just using the commented line below, but I get the same results //aStarTerrain = this.GetComponents<Terrain>()[0]; Debug.Log ("Got terrain "+aStarTerrain.name); SplatPrototype[] splatPrototypes = aStarTerrain.terrainData.splatPrototypes; Debug.Log("Terrain has "+splatPrototypes.Length+" splat prototypes"); SplatPrototype aStarCellSplat = splatPrototypes[0]; Debug.Log("Re-tyling splat prototype "+aStarCellSplat.texture.name); aStarCellSplat.tileSize = new Vector2(2000,2000); Debug.Log("Tyling is now "+aStarCellSplat.tileSize.x+"/"+aStarCellSplat.tileSize.y); aStarTerrain.terrainData.RefreshPrototypes(); aStarTerrain.Flush(); } //... Problem is, nothing gets changed, the checker map is not re-tiled. The console outputs correctly tell me that I've got the Terrain object with the right name, that it has the right number of splat prototypes and that I'm modifying the tileSize on the SplatPrototype object corresponding to the right texture. It also tells me the value has changed. But nothing gets updated in the actual graphical view. So please, what am I missing?

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  • displaying python's autodoc to the user (python 3.3)

    - by Plotinus
    I'm writing a simple command line math game, and I'm using python's autodoc for my math algorithms to help me remember, for example, what a proth number is while i'm writing the algorithm, but later on I'll want to tell that information to the user as well, so they'll know what the answer was. So, for example I have: def is_proth(): """Proth numbers and numbers that fit the formula k×2^n + 1, where k are odd positive integers, and 2^n > k.""" [snip] return proths and then I tried to make a dictionary, like so: definitions = {"proths" : help(is_proth)} But it doesn't work. It prints this when I start the program, one for each item in the dictionary, and then it errors out on one of them that returns a set. And anyway, I don't want it displayed to the user until after they've played the game. Help on function is_proth in module __main__: is_proth() Proth numbers and numbers that fit the formula k×2^n + 1, where k are odd positive integers, and 2^n > k. (END) I understand the purpose of autodoc is more for helping programmers who are calling a function than for generating userdoc, but it seems inefficient to have to type out the definition of what a proth number is twice, once in a comment to help me remember what an algorithm does and then once to tell the user the answer to the game they were playing after they've won or lost.

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  • What popular "best practices" are not always best, and why?

    - by SnOrfus
    "Best practices" are everywhere in our industry. A Google search on "coding best practices" turns up nearly 1.5 million results. The idea seems to bring comfort to many; just follow the instructions, and everything will turn out fine. When I read about a best practice - for example, I just read through several in Clean Code recently - I get nervous. Does this mean that I should always use this practice? Are there conditions attached? Are there situations where it might not be a good practice? How can I know for sure until I've learned more about the problem? Several of the practices mentioned in Clean Code did not sit right with me, but I'm honestly not sure if that's because they're potentially bad, or if that's just my personal bias talking. I do know that many prominent people in the tech industry seem to think that there are no best practices, so at least my nagging doubts place me in good company. The number of best practices I've read about are simply too numerous to list here or ask individual questions about, so I would like to phrase this as a general question: Which coding practices that are popularly labeled as "best practices" can be sub-optimal or even harmful under certain circumstances? What are those circumstances and why do they make the practice a poor one? I would prefer to hear about specific examples and experiences.

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  • What are best practices when switching between projects/coming back to projects frequently?

    - by dj444
    The nature of my job is that I have to switch back and forth between projects every few weeks. I find that one of the biggest impediments to my productivity is the ramp-up time to getting all the relevant pieces of code "back in my head" again after not seeing it for a period. This happens to a smaller and larger extent for briefer breaks / longer breaks. Obviously, good design, documentation, commenting, and physical structure all help with this (not to mention switching between projects as infrequently as possible). But I'm wondering if there are practices/tools that I may be missing out on. What are your specific practices for improving on this?

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  • What are developer's problems with helpful error messages?

    - by Moo-Juice
    It continue to astounds me that, in this day and age, products that have years of use under their belt, built by teams of professionals, still to this day - fail to provide helpful error messages to the user. In some cases, the addition of just a little piece of extra information could save a user hours of trouble. A program that generates an error, generated it for a reason. It has everything at its disposal to inform the user as much as it can, why something failed. And yet it seems that providing information to aid the user is a low-priority. I think this is a huge failing. One example is from SQL Server. When you try and restore a database that is in use, it quite rightly won't let you. SQL Server knows what processes and applications are accessing it. Why can't it include information about the process(es) that are using the database? I know not everyone passes an Applicatio_Name attribute on their connection string, but even a hint about the machine in question could be helpful. Another candidate, also SQL Server (and mySQL) is the lovely string or binary data would be truncated error message and equivalents. A lot of the time, a simple perusal of the SQL statement that was generated and the table shows which column is the culprit. This isn't always the case, and if the database engine picked up on the error, why can't it save us that time and just tells us which damned column it was? On this example, you could argue that there may be a performance hit to checking it and that this would impede the writer. Fine, I'll buy that. How about, once the database engine knows there is an error, it does a quick comparison after-the-fact, between values that were going to be stored, versus the column lengths. Then display that to the user. ASP.NET's horrid Table Adapters are also guilty. Queries can be executed and one can be given an error message saying that a constraint somewhere is being violated. Thanks for that. Time to compare my data model against the database, because the developers are too lazy to provide even a row number, or example data. (For the record, I'd never use this data-access method by choice, it's just a project I have inherited!). Whenever I throw an exception from my C# or C++ code, I provide everything I have at hand to the user. The decision has been made to throw it, so the more information I can give, the better. Why did my function throw an exception? What was passed in, and what was expected? It takes me just a little longer to put something meaningful in the body of an exception message. Hell, it does nothing but help me whilst I develop, because I know my code throws things that are meaningful. One could argue that complicated exception messages should not be displayed to the user. Whilst I disagree with that, it is an argument that can easily be appeased by having a different level of verbosity depending on your build. Even then, the users of ASP.NET and SQL Server are not your typical users, and would prefer something full of verbosity and yummy information because they can track down their problems faster. Why to developers think it is okay, in this day and age, to provide the bare minimum amount of information when an error occurs? It's 2011 guys, come on.

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  • Best practices that you disagree with

    - by SnOrfus
    'Best practices' is a bit of a fuzzy term. Recently I've gone through another wave of self-improvement in my coding practices (mostly brought on by reading Clean Code) and I find that some of the things I disagree with. I'd hate to take things at face value and not think about them critically, but I wonder whether or not my thinking is wrong. So I wonder, what are some best practies or practices that you've seen that many of your peers seem to agree with that you disagree with? For the time being, I'm speaking strictly of coding practices.

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  • On improving commit practices

    - by greengit
    I was thinking about ways to improving my commit practices. Is there any co-relation between no. of source code lines and no. of commits? In a recent project that I was involved in, I was going at 30 commits per 1000 lines. One typical file from the project has these stats language: JavaScript total commits that include this file: 32 total lines: 1408 source lines: 1140 comment lines: 98 no. of function declarations: 28 other declarations: 8 Another file has these... Language: Python total commits that include this file: 17 total lines: 933 source lines: 730 comment lines: 80 classes: 1 methods: 10 I also think that no. of commits is more related to no. of features or no. of changes to the code and less to the no. of lines. The general git community motto is make short commits and commit often. So, do you really think about you commit strategy before you start the project. For that matter, is there anything like commit strategy? If so, what's yours?

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  • Should a newcomer to Perl learn both Perl 5 and 6?

    - by M. Joanis
    Hello! I have started playing around with Perl 5 lately, and it seems very interesting. I would like to spend some time learning it more in depth when I can. My question, since Perl 6 is slowly taking place (I believe...) and is said to break backward compatibility, is this: am I better learning Perl 5 and then Perl 6, or is learning Perl 6 directly a better time investment according to you? If the changes from Perl 5 to 6 are making it hard to understand Perl 5, I should certainly start with Perl 5 to be able to read "old" scripts, then check Perl 6. There is also the "Perl 6 is not yet completely released" problem. I know there's an early adopter implementation for Perl 6, but if Perl 6 isn't officially released before some more years, I'll stick to 5 for now. I would certainly like some insight on this. Feel free to discuss related stuff. My interest in scripting languages is fairly new. Thanks!

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  • Is CUDA, cuBLAS or cuBLAS-XT the right place to start with for machine learning?

    - by Stefan R. Falk
    I am not sure if this is the right forum to post this question - but it surely is no question for stackoverflow. I work on my bachelor thesis and therefore I am implementing a so called Echo-State Network which basically is an artificial neural network that has a large reservoir of randomly initialized neurons and just a few input and output neurons .. but I think we can skip that. The thing is, there is a Python library called Theano which I am using for this implementation. It encapsulates the CUDA API and offers a quiet "comfortable" way to access the power of a NVIDIA graphics card. Since CUDA 6.0 there is a sub-library called cuBLAS (Basic Linear Algebra Subroutines) for LinAlg operations and also a cuBLAS-XT an extention which allows to run calculations on multiple graphics cards. My question at this point is if it would make sense to start using cuBLAS and/or cuBLAS-XT right now since the API is quite complex or rather wait for libraries that will build up on those library (such as Theano does on basic CUDA)? If you think this is the wrong place for this question please tell me which one is, thank you.

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  • How can I create blog post functionality without Wordpress or Drupal?

    - by Ali
    I'm currently learning Python (as a beginner in programming). I go through each chapter learning basics. I haven't gotten far enough to understand how CMS works. I eventually want a blog that doesn't depend on Wordpress or Drupal. I would like to develop it myself as my skills progress. My immediate curiosity is on blog posts. What is the component called that will allow me to make a daily post on my blog? There must be a technical term for this function. I would like to learn how to make one, but don't even know what to research. Everything I research points me to Wordpress or Drupal. I would like to create my own. Thanks in advance! Ali

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