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  • How to handle large table in MySQL ?

    - by Frantz Miccoli
    I've a database used to store items and properties about these items. The number of properties is extensible, thus there is a join table to store each property associated to an item value. CREATE TABLE `item_property` ( `property_id` int(11) NOT NULL, `item_id` int(11) NOT NULL, `value` double NOT NULL, PRIMARY KEY (`property_id`,`item_id`), KEY `item_id` (`item_id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci; This database has two goals : storing (which has first priority and has to be very quick, I would like to perform many inserts (hundreds) in few seconds), retrieving data (selects using item_id and property_id) (this is a second priority, it can be slower but not too much because this would ruin my usage of the DB). Currently this table hosts 1.6 billions entries and a simple count can take up to 2 minutes... Inserting isn't fast enough to be usable. I'm using Zend_Db to access my data and would really be happy if you don't suggest me to develop any php side part. Thanks for your advices !

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  • Make a Method of the Business Layer secure. best practice / best pattern [.net/c#]

    - by gsharp
    Hi We are using ASP.NET with a lot of AJAX "Page Method" calls. The WebServices defined in the Page invokes methods from our BusinessLayer. To prevent hackers to call the Page Methods, we want to implement some security in the BusinessLayer. We are struggling with two different issues. First one: public List<Employees> GetAllEmployees() { // do stuff } This Method should be called by Authorized Users with the Role "HR". Second one: public Order GetMyOrder(int orderId) { // do sutff } This Method should only be called by the owner of the Order. I know it's easy to implement the security for each method like: public List<Employees> GetAllEmployees() { // check if the user is in Role HR } or public Order GetMyOrder(int orderId) { // check if the order.Owner = user } What I'm looking for is some pattern/best practice to implement this kind of security in a generic way (without coding the the if then else every time) I hope you get what i mean :-) Thanks for you help.

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  • Make a Method of the Business Layer secure. best practice / best pattern

    - by gsharp
    We are using ASP.NET with a lot of AJAX "Page Method" calls. The WebServices defined in the Page invokes methods from our BusinessLayer. To prevent hackers to call the Page Methods, we want to implement some security in the BusinessLayer. We are struggling with two different issues. First one: public List<Employees> GetAllEmployees() { // do stuff } This Method should be called by Authorized Users with the Role "HR". Second one: public Order GetMyOrder(int orderId) { // do sutff } This Method should only be called by the owner of the Order. I know it's easy to implement the security for each method like: public List<Employees> GetAllEmployees() { // check if the user is in Role HR } or public Order GetMyOrder(int orderId) { // check if the order.Owner = user } What I'm looking for is some pattern/best practice to implement this kind of security in a generic way (without coding the the if then else every time) I hope you get what i mean :-)

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  • Border in DrawRectangle

    - by undsoft
    Well, I'm coding the OnPaint event for my own control and it is very nescessary for me to make it pixel-accurate. I've got a little problem with borders of rectangles. See picture: These two rectangles were drawn with the same location and size parameters, but using different size of the pen. See what happend? When border became larger it has eaten the free space before the rectangle (on the left). I wonder if there is some kind of property which makes border be drawn inside of the rectangle, so that the distance to rectangle will always be the same. Thanks.

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  • Generate xml containing animation information from ms ppt 2003/07 file

    - by Ravisha
    I am planning to write an application which has UI from MS ppt.Here is where all the animation will be configured. My application will just read xmls containing animation configuration and run it on a target device(Cannot mention details w.r.t device right now ,apologies for that) Not necessary that i want xmls it self but if there is a way to get animation details directly from the ppt file i will be more than happy. I will be going ahead with C#.Net 3.0 with windows XP as my OS.MY office will be either 2003 or 07.Can switch to any of these versions Please give suggestions as what will be the starting point for the same.Thanks in advance Please Let me know if any more details are needed

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  • Which is quicker? Memcache or file query? (using maxmind geoip.dat file)

    - by tomcritchlow
    Hi, I'm using Python on Appengine and am looking up the geolocation of an IP address like this: import pygeoip gi = pygeoip.GeoIP('GeoIP.dat') Location = gi.country_code_by_addr(self.request.remote_addr) (pygeoip can be found here: http://code.google.com/p/pygeoip/) I want to geolocate each page of my app for a user so currently I lookup the IP address once then store it in memcache. My question - which is quicker? Looking up the IP address each time from the .dat file or fetching it from memcache? Are there any other pros/cons I need to be aware of? For general queries like this, is there a good guide to teach me how to optimise my code and run speed tests myself? I'm new to python and coding in general so apologies if this is a basic concept. Thanks! Tom

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  • Problem in running website project

    - by Durga Dutt
    When a run my website project then it gives me error of 'Unable to connect to asp development server'. I am using Visual Studio 2010. Only my website projects are having these prblems. I have tried reinstalling vs2010 . But again & again i m having same problem. Please help me. Thanks in advance & Happy New Year 2011. I wish this will bring a lot of happiness and prosperity in everyone's life.

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  • How to create Ribbon tabs dynamically?

    - by Lari13
    I want to start developmet of new application using PrismV4, MEF, Ribbon. But now, I have a problem. How to create tabs for Ribbon dynamically? Each module in application could create own tab in Ribbon. And each tab may have many groups. How can it be done? Where do I need to place each group's definitions (what controls to use (buttons, textboxes, comboboxes, etc) and command bindings and how? Do I need to write XAML somewhere in Module, or all it can be done by code? And last question, how to notify Ribbon (in Shell) to add these tabs to Ribbon? Shall I use EventAggregator to communicate from Module to Shell? Or? Thanks for any advices and Happy New Year :)

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  • Why does my Eclipse crash all the time?

    - by Marcel
    Somehow stupid question, I have to admit - hope it won't cost me too many points. To make it clear: I would also be happy if you can help me find the reason for the crashes. I wouldn't expect a precise answer. However, I don't see why my Eclipse is crashing (freezing) all the time. Mostly when I save a file. For some reason, crashes seem to increase lately... I use Eclipse Helios (Version: 3.6.1) and java version "1.6.0_20" (OpenJDK Runtime Environment (IcedTea6 1.9.2) (6b20-1.9.2-0ubuntu2) OpenJDK 64-Bit Server VM (build 19.0-b09, mixed mode)) on Ubuntu 10.10 (64-Bit). Thank you!

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  • How do I go about embedding a youtube chromeless player without adding controls?

    - by ndthl
    I am creating an online experiment. It involves participants watching a video then answering a questionnaire. I would like to embed a chromeless youtube video which plays automatically on page load, does not have controls for participants to play around with, and loads the next page once the video finishes. Now the autoplay/forward to next page functions are secondary and I'm not too concerned if I can't get them working. However I am very interested in how to embed a chromeless player. I have gone to the google playground but this code already has the controls attached. I am not very experienced at coding so I do not know what to remove from the code for none of the custom controls on the left to be displayed. Is anyone able to help me? Thanks, Wil

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  • Developing and deploying games for Windows, Mac (& Linux)

    - by nornagon
    I want to write games that run on all the major platforms. I also want people to be able to play them by downloading a file and double clicking it. That means a single .exe/.app file. I'm happy to use OpenGL directly for graphics. What I don't know how to do is show a window, handle mouse/keyboard input and play sounds in a cross-platform manner. I don't really mind what the underlying language is, as long as it isn't C++ or Java. C#, Ruby or Python would be preferable, in that order :) Please, SO, save me from having to write Flash games!

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  • Document key usage in Dictionary

    - by phq
    How can I document the key usage in a Dictionary so that it shows in Visual studio when coding using that object? I'm looking for something like: /// <param name="SpecialName">That Special Name</param> public Dictionary<string,string> bar; So far the best attempt has been to write my own class: public class SpecialNameDictionary : IDictionary<string, string> { private Dictionary<string, string> data = new Dictionary<string, string>(); /// <param name="specialName">That Special Name</param> public string this[string specialName] { get { return data[specialName]; } } } But It adds a lot of code that doesn't do anything. Additionally I must retype every Dictionary method to make it compile. Is there a better way to achive the above?

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  • Is my TFS2010 backup/restore hosed?

    - by bwerks
    Hi all, I recently set up a sandbox TFS to test TFS-specific features without interfering with the production TFS. I was happy I did this sooner than I thought--I hadn't been backing up the encryption key from SSRS and upon restoring the reporting databases, they remained inactive, requiring initialization that could only come from applying the encryption key. Said encryption key was lost when I nuked the partition after backing up the TFS databases. The only option I seemed to have is to delete the encrypted data. I'm fine with this, since there wasn't much in there to begin with, however once they're deleted I'm not quite sure how to configure TFS to recognize a new installation of these services while using the restored versions of everything else. Unfortunately, the TFS help file doesn't seem to account for this state though. Is there a way to essentially rebuild the reporting and analysis databases? Or are they gone forever?

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  • Regular Expression .net flavor

    - by user1440109
    Dont ask how this works but currently it does ("^\|(.?)\|*$")....kinda. This removes all extra pipes...part one....I have searched all over no anwser yet. I am using VB2011 beta...asp web form......vb coding though! I want to capture special character pipe (|) which is used to seperate words...i.e. car|truck|van|cycle problem is users lead with, trail with, use multiple, and use spaces before and after...i.e. |||car||truck | van || cycle. another example: george bush|micheal jordon|bill gates|steve jobs <-- this would be correct but when I do remove space it takes correct space out. so I want to get rid of whitespace leading, trailing, any space before | and space after | and only allow one pipe (|)....in between alphanumeric of course.

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  • Creating An Utilities Class?

    - by Soo
    Hello SO, I'm very new to OOP and am trying my hardest to keep things strictly class based, while using good coding priciples. I'm a fair ways into my project now and I have a lot of general use methods I want to put into an utilities class. Is there a best way to create an utilities class? public class Utilities { int test; public Utilites() { } public int sum(int number1, int number2) { test = number1+number2; } return test; } After creating this Utilities class, do I just create an Utilities object, and run the methods of my choosing? Do I have this Utilities class idea correct?

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  • How do i create a nice looking image fadein onload with mootools?

    - by woobione
    Hi everyone! I´m creating a website for a photographer who would like a fine fadein on his images. I have excluded flash as a solution and would like to use those fine-looking effects of mootools fx. But the problem is that I'm really lousy when it comes to javascript. So if anyone could give me an easy solution for fading in one single image onload and when the image is loaded I would be really happy. I know there is a lot of different people out there who have this. But the problem is that i don't know how the code works even if it is a complete solution. So most important. If anyone has got the time to explain what every single line of code does i would be more than grateful. Thanks!

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  • PostgreSQL: How to index all foreign keys?

    - by biggusjimmus
    I am working with a large PostgreSQL database, and I are trying to tune it to get more performance. Our queries and updates seem to be doing a lot of lookups using foreign keys. What I would like is a relatively simple way to add Indexes to all of our foreign keys without having to go through every table (~140) and doing it manually. In researching this, I've come to find that there is no way to have Postgres do this for you automatically (like MySQL does), but I would be happy to hear otherwise there, too.

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  • Run java with highest security setting

    - by Ankiov Spetsnaz
    I'm currently writing an in house coding challenge web application and I am wondering if there is any other security precaution I would need to have other than below java option at runtime. java -Djava.security.manager=default Basically, challenges would be more of single threaded math and algorithm focused. So I would need to enable basic data structure objects and disable any file, sockets, threading or any thing that might be not so important. Based on my quick search turning on security manager as above seems to be a solution but since this is a security related I would like to be sure before it goes alive. Is there anything else I could do more?

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  • Problem with connectionstring and entityframework

    - by Masna
    Hello, I have a database (sql 2008 mdf file), a class library project with an edmx file, created with the wizard. So the connection string is also made by the wizard. This project is on a teamfoundation server. I can use all the wizard made objects when coding. But when i run the program and I try to make an entityContainerName, the program crashes and gives this error: The specified named connection is either not found in the configuration, not intended to be used with the EntityClient provider, or not valid. on this line: public TestEntities() : base("name=TestEntities", "TestEntities") How can I solve this problem or what am I doing wrong?

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  • Looking for a file database

    - by Mitchell Skurnik
    A few years ago there was a PHP script around called paFileDB. Essentially it created a database of files that end users could download and rate. It would keep track of the number of downloads as well. I am looking for a replacement of this coded in ASP.net C#. For the last week I have been searching around for "asp.net C# file database" and have just gotten how to upload files to a database. I have also search with some other terms. I do not need a full blown CMS like DotNetNuke or SharePoint. All I have been looking for is a system I could easily add to my existing .net C# site. I have thought about coding one myself, but with me being rather busy at work and this being a personal project, I simply do not have the time to code this myself. I hope that you guys can help. Thank you!

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  • Simple network gaming, client-server architecture planning.

    - by michal
    Hi, I'm coding simple game which I plan to make multiplayer (over the network) as my university project. I'm considering two scenarios for client-server communication: The physics (they're trivial! I should call it "collision tests" in fact :) ) are processed on server machine only. Therefore the communication looks like Client1->Server: Pressed "UP" Server->Clients: here you go, Client1 position is now [X,Y] Client2->Server: Pressed "fire" Server->Clients: Client1 hit Client2, make Client2 disappear! server receives the event and broadcasts it to all the other clients. Client1->Server: Pressed "UP" Server->Clients: Client1 pressed "UP", recalculate his position!! [Client1 receives this one as well!] Which one is better? Or maybe none of them? :)

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  • Is there any method in Cocoa that helps iterating through all NSColor values(R,G,B only, alpha not t

    - by krasnyk
    You may ask why do I need it? I have to detect all white objects at the B/W image. I'm coloring each object and taking its rect. In order fill each object with different color I would be very happy to use a function that can for a given color gimme a next one or so. In Qt there is a nice one that is called nextColor or so, returns the integer representing the next color(which can be easily translated to RGB). Does Cocoa have sth like that?

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  • django url tag performance

    - by zxygentoo
    I was trying to integrate django-voting into my project following the RedditStyleVoting instruction. In my urls.py, i did something like this: url(r'^sections/(?P<object_id>\d+)/(?P<direction>up|down|clear)vote/?$', vote_on_object, dict( model=Section, template_object_name='section', template_name='script/section_confirm_vote.html', allow_xmlhttprequest=True ), name="section_vote", then, in my template: {% vote_by_user user on section as vote %} {% score_for_object section as score %} {% vote_by_user user on section as vote %} {% score_for_object section as score %} {{ score.score|default:0 }} It takes over 1.3s to load the page, but by hard coding it like this: {% vote_by_user user on section as vote %} {% score_for_object section as score %} {{ score.score|default:0 }} I got 50ms. Just avoid the url tag resolving stuff I got a 20+ times performance improvement. Is there something I did wrong? If not, then what's the best practice here, should we do things the right way or the fast way?

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  • Programming tutorials for people with zero experience

    - by www.aegisub.net
    A friend of mine is interested in learning how to program computers, but she knows nothing about programming. I suggested that Python might be a good language to start with, but after some googling, I couldn't find any tutorials that covered both programming and Python in an adequate way. I don't want her to go through the tiresome "learn algorithms in pseudocode first" routine. Instead, I'd like a tutorial that will explain the basic ideas while working towards a real goal, e.g. a very simple console game. Does anyone know of any such tutorials? Do you think that I'm mistaken in how I'm handling this? Is Python a bad choice? I know that something like C, C++ or Java won't work - too many details will be very counterproductive. On the other hand, I think that Lisp might be too mathematical and abstract. Python, on the other hand, will let her even do something like coding primitive graphical games in a short period of time.

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  • Collectable<T> serialization, Root Namespaces on T in .xml files.

    - by Stacey
    I have a Repository Class with the following method... public T Single<T>(Predicate<T> expression) { using (var list = (Models.Collectable<T>)System.Xml.Serializer.Deserialize(typeof(Models.Collectable<T>), FileName)) { return list.Find(expression); } } Where Collectable is defined.. [Serializable] public class Collectable<T> : List<T>, IDisposable { public Collectable() { } public void Dispose() { } } And an Item that uses it is defined.. [Serializable] [System.Xml.Serialization.XmlRoot("Titles")] public partial class Titles : Collectable<Title> { } The problem is when I call the method, it expects "Collectable" to be the XmlRoot, but the XmlRoot is "Titles" (all of object Title). I have several classes that are collected in .xml files like this, but it seems pointless to rewrite the basic methods for loading each up when the generic accessors do it - but how can I enforce the proper root name for each file without hard coding methods for each one? The [System.Xml.Serialization.XmlRoot] seems to be ignored.

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