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• oracle using index even though there is no filter criteeria specified

  - by Kaushik

  In this query: SELECT WTTEMPLATE.TEMPLATEuID, MAX (WTTRX.VALUEDATE) AS template_last_use_date FROM wttemplate, wttrx WHERE WTTEMPLATE.TEMPLATEID = WTTRX.TEMPLATEID(+) AND WTTEMPLATE.CUSTID = WTTRX.CUSTID GROUP BY WTTEMPLATE.TEMPLATEuID The explain plan shows:index fast full scan using indexes on WTTEMPLATE.TEMPLATEID and (WTTRX.TEMPLATEID,WTTRX.CUSTID). My question is this: I have not specified any filter criteria , so how can it use indexes? It should do full scan...right?

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• Additional Pssnapins

  - by Guy Thomas

  I can see the 6 or so native PSSnapins, thanks to get-PSSnapin I have added the useful QAD snapins, thanks to add-PSSnapin My question is could you recommend any other useful third-party Snapins for PowerShell?

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• How do I set a ViewModel on a window in XAML using DataContext property?

  - by Nicholas

  The question pretty much says it all. I have a window, and have tried to set the DataContext using the full namespace to the ViewModel, but I seem to be doing something wrong. <Window x:Class="BuildAssistantUI.BuildAssistantWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" DataContext="BuildAssistantUI.ViewModels.MainViewModel">

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• How to verify that "puts" has been called with a certain message?

  - by soulnafein

  Hello there. I'm trying to make this test fail :) it "should display the question" do @ui.should_receive(:puts).with("What's your name?").once @ui.ask_question("What's your name?") end At the moment it passes even if I don't call puts in my function.

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• How do I use JDK 7 on Mac OSX?

  - by Yko

  OK. This is a newbie question but I can't figure it out... I would like to use the WatchService API as mentioned in this link: http://download.oracle.com/javase/tutorial/essential/io/notification.html After reading around, I found out that WatchService is part of the NIO class which is scheduled for JDK 7. So, it is in beta form. It's fine. http://jdk7.java.net/download.html has the JDK which I downloaded and extracted. I got a bunch of folders. I don't know what to do with them. Then, I read around some more and found that some nice group of people created JDK 7 as a binary so someone like me can install it easily. It is called Open JDK: http://code.google.com/p/openjdk-osx-build/ So, I downloaded the .dmg file and instal it. Then I open "Java Preference" and see that OpenJDK7 is available. So, now I feel that I can start trying out WatchService API. From the tutorial in the first link, the author gave a .java file to test it out first and make sure that it is running. Here is the link to the file: http://download.oracle.com/javase/tutorial/essential/io/examples/WatchDir.java So, I boot up Eclipse (actually I use STS) and create a new Java project and choose JaveSE-1.7 in the "use an execution environment JRE:". Under the src folder, I copy pasted the WatchDir.java file. And I still see tons of squiggly red lines. All the "import.java.nio.*" are all red and I cannot run it as a Java app. If you read this far, thanks a lot. So, now... What do I need to do? Thanks. EDIT: I actually did not pursue using Java 7 but there are a lot of interest in it and it seems like people keep answering this question. What should I do to make it more relevant to people who search for it? Let me know by PMing me. Thanks.

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• get data from online once and then viewable offline

  - by user313100

  Okay, I want to have an app that takes phone numbers from an online database and displays them in a table view. When the user is not online, I want them to still be able to see the numbers they already got from the database in the table view. If the user manages to go back online, the database updates the view. My question is, is this possible to do and if so, what's the best way to approach it? (bit of a newbie, please help me out)

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• Give me some idea : How do I match photographer?

  - by user231430

  I have photographer in my database such as PhotographerID, PhotographerName, JobArea, BestPhotography, FavoritePhotography. And I want to match some photographer from my database. The question that I will ask the user before matching photographer is.. Area or province that you want to hire a photographer? Type of photography? How do I match?

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• Gitolite many users having specific working directory and all are using one repository

  - by miet

  I'm using Gitolite. This is my folder Structure: /var/www/demo.com/user1 /var/www/demo.com/user2 /var/www/demo.com/user3 I have created one repository named demo.git. I have created three gitolite users user1, user2 and user3. Now, my question is that when user1 clone or commit or push or pull changes, then it only should change user1's working directory, and same as user2 and user3. How would you enforce that with Gitolite?

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• SQL Server: Declaring variable type based on a column type

  - by Bernard Dy

  In Oracle's PL-SQL, you can declare a variable and define its type based on a table column: declare var1 table.column%TYPE; Is it possible to do something similar in MS SQL Server? I searched but could not find a duplicate for this question. If there is one, please let me know and I'll refer to it and delete this.

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• Which version of .NET 4.0 is needed for web site hosting? Client or Full?

  - by Pure.Krome

  Hi folks, Simple question - for dedicated website hosting, do i need to download and install the full ASP.NET 4.0 package, or just the client. I understand the client is required for end users who need the .NET framework for their windows form applications. But i'm not sure for a web hosting sceanrio. Also, don't worry about talking about x86 or x64 - i understand the differences with the packages, etc.

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• Retrieving currently playing song from Windows Media Player (C#)

  - by DMan

  I realize there is a similar question to this, but it really has no information in it. I want to retrieve the currently playing song title (similar to MSN Messenger) within a C# app. The Windows Media Player I want to control is EXTERNAL- that is, it is running on the computer, not within the app. Anyway to do this?

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• Difference of function argument as (const int &) and (int & a) in C++

  - by Narek

  I know that if you write void function_name(int& a), then function will not do local copy of your variable passed as argument. Also have met in literature that you should write void function_name(const int & a) in order to say compiler, that I dont want the variable passed as argument to be copied. So my question: what is the difference with this two cases (except that "const" enshures that the variable passes will not be changed by function!!!)???

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• Connection between Properties of Entities in Data Oriented Design

  - by sharethis

  I want to start with an example illustrating my question. The following way it is done in the most games. class car { vec3 position; vec3 rotation; mesh model; imge texture; void move(); // modify position and rotation void draw(); // use model, texture, ... }; vector<car> cars; for(auto i = cars.begin(); i != cars.end(); ++i) { i->move(); i->draw(); } Data oriented design means to process the same calculation on the hole batch of data at once. This way it takes more advantage out of the processor cache. struct movedata { vec3 position; vec3 rotation; }; struct drawdata { mesh model; imge texture; }; vector<movedata> movedatas; vector<drawdata> drawdatas; for(auto i = movedatas.begin(); i != movedatas.end(); ++i) { // modify position and rotation } for(auto i = drawdatas.begin(); i != drawdatas.end(); ++i) { // use model, texture, ... } But there comes a point where you need to find other properties according to an entity. For example if the car crashes, I do not need the drawdata and the movedata any more. So I need to delete the entries of this entity in all vectors. The entries are not linked by code. So my question is the following. How are properties of the same entity conceptually linked in a data oriented design?

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• C#: How to replace "-" with " -" only when it's not preceded by "e"?

  - by MaDDoX

  I imagine I should use Regex for that but I still scratch my head a lot about it (and the only similar question I found wasn't exactly my case) so I decided to ask for help. This is the input and expected output: Input: "c-0.68219,-0.0478 -1.01455-0.0441 0.2321e-4,0.43212" Output:"c -0.68219,-0.0478 -1.01455 -0.0441 0.2321e-4,0.43212" Basically I need either commas or spaces as value separators, but I can't break the exponential index (e-4). Maybe do two successive replacements?

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• does XSLT transformation triggered by a C# code create any dll files ?

  - by infant programmer

  I have been facing an error when I trigger XSLT from a C# code, It mentions something about dll file access failure every time, so just want to know whether this transformation code creates any dll files (in C:\Windows\temp directory) as such?? (I have mentioned the error and triggering program in my previous question),

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• How to check if MemoryStream can convert to Bitmap in C# ?

  - by Thyphuong

  As the question mentioned, I have a memorystream from a Byte[] ByteArr. How can I check if it can convert to a bitmap before using it with Bitmap myImg = new Bitmap(memorystream).

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• Why use an event cache with epoll_wait?

  - by user1827356

  Question: epoll man page has some pointers when using epoll with an 'event cache'. But, why would you need to maintain an event cahce at all - Isn't this the same as what epoll is supposed to be doing? Is it to avoid making multiple epoll_wait calls which might be slower than managing the events in user space? Is it to implement a custom 'priority' scheme over the cached events? Background: I'm trying to understand the strengths/shortcomings of epoll and its applicability to different situations

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• reading input file from server and displaying output on client side

  - by tazim

  Hi, I have to read a file from server side . Obtained its contents stored it in a list and sent it to template Now, My question is how to access this list so as to display the contents of files line by line . I am using ajax and jquery to obtain the data on client side def showfiledata(request): f = open("/home/tazim/webexample/test.txt") list = f.readlines() return_dict = {'list':list} json = simplejson.dumps(list) return HttpResponse(json,mimetype="application/json")

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• Python ORM that auto-generates/updates tables and uses SQLite?

  - by Jason Miesionczek

  I am doing some prototyping for a new desktop app i am writing in Python, and i want to use SQLite and an ORM to store data. My question is, are there any ORM libraries that support auto-generating/updating the database schema and work with SQLite?

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• Money Transaction without using in-app purchase for iphone app

  - by Jaydevsinh Gohil

  I want to implement the payment gateway like functionality in my iphone application other than In-App Purchase feature provided by Apple. So, i have one Question regarding the application approval on Appstore that, if i will redirect user to the UIwebview for payment related functionality, then apple will reject this application for not following the human interface guideline or it will allow this. Other way i can do it by calling web-service for the transaction of money. So, again there is any chance of app rejection on AppStore. Please share your thought on this

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• Is there a mean to specify specialization-genralization (inheritance) of actors in UML?

  - by Ivan

  I am just starting to use UML and have came to the following question: Some actors clearly are specialized versions of a natural entity. For example I've got Administrator and User actors which are clearly nothing but different roles of a user, Authorizer and Dispatcher which are services (and are going to be implemented this way). Should I just ignore these facts while modelling actors and use cases or specify it some way? I think I could make good use of such a specification to facilitate code generation.

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• system() function in PHP prints variable 2 times.

  - by maxorq

  Stupid question, this code: <?php $variable = system("cat /home/maxor/test.txt"); echo $variable; ?> with file test.txt: blah prints: blah blah What can I do with system() function to not print nothing so I get 1 "blah"???

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• Can Firefox Plugin, Greasmonkey, be detected by Web Servers?

  - by Babar

  Hi, My friend's account for some Facebook game was suspended on the grounds that he had Greasemonkey installed on his browser. He is asked to uninstall Greasemonkey and account has been restored. My question is how can a web server detect a client side plugin presence? I assume that Greasemonkey or greasemonkey scripts operate on the client side only so it would not be possible for the server to detect it. Thanks.

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• Switching Ruby on Rails databases

  - by Marco

  Hi, I'm starting learning Ruby on Rails. So my application, like every Rails app, has three databases: Development Test Production And the question is: how do i switch from a db to another? Thanks

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• database transaction rollback processing in PHP

  - by user198729

  try { $con->beginTransaction(); $this->doSave($con); $con->commit(); } catch (Exception $e) { $con->rollBack(); throw $e; } The code above is quite standard an approach to deal with transactions, but my question is:what if $con->rollBack() also fails? It may cause db lock,right?If so,what's the perfect way to go?

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