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  • Externalize BIRT queries

    - by shikarishambu
    Hi, Is there a way to externalize report queries for BIRT reports. We need to support multiple database engines and so our queries are different depending on the underlying database. I would like to use a config parameter to tell BIRT report to use a specific query file

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  • nonatomic property in model class when using NSOperationQueue (iPhone)?

    - by Andrew B.
    I have a custom model class with an NSMutableData ivar that will be accessed by custom NSOperation subclasses (using an NSOperationQueue). I think I can guarantee thread-safe access to the ivar from multiple NSOperations by using dependencies, and I can guarantee that I don't access the ivar from other code (say my main app thread) by waiting until the Q has finished all operations. Should I use a nonatomic property specification, or leave it atomic? Is there a significant impact on performance?

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  • Writing a file shredder in python or ruby?

    - by pmilb21
    In the effort to learn python and/or ruby, I was wondering how a file shredder would be implemented? I would like it to take in a file as an argument and then employ an algorithm to make that file unrecoverable. Would possibly add the support for multiple files or even whole directories later.

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  • SQL Server Maximum row size

    - by DannySmurf
    Came across this error today. Wondering if anyone can tell me what it means: Cannot sort a row of size 9522, which is greater than the allowable maximum of 8094. Is that 8094 bytes? Characters? Fields? Is this a problem joining multiple tables that are exceeding some limit?

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  • Play an AudioBufferSourceNode twice?

    - by alltom
    Should I be able to use the same AudioBufferSourceNode to play a sound multiple times? For some reason, calling noteGrainOn a second time doesn't play audio, even with an intervening noteOff. This code only plays the sound once: var node = audioContext.createBufferSource() node.buffer = audioBuffer node.connect(audioContext.destination) var now = audioContext.currentTime node.noteGrainOn(now, 0, 2) node.noteOff(now + 2) node.noteGrainOn(now + 3, 0, 2) node.noteOff(now + 5)

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  • 'goto' usage

    - by Landon
    I've long been under the impression that 'goto' should never be used if possible. While perusing libavcodec (which is written in C) the other day, I noticed multiple uses of it. Is it ever advantageous to use 'goto' in a language that supports loops and functions? If so, why?

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  • Design pattern suggestion

    - by Avinash
    Following is the problem statement. There are n numbers of match strings, If event A occurs and then in certain period of time event B occurs then I do not raise alarm. but if B do not occurs then i have to raise alarm. There can be multiple chain of events which defines whether to raise alarm or not.

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  • How to get only one record for each duplicate rows of the id in oracle?

    - by Psychocryo
    suppose i have this table: group_id | image | image_id | ----------------------------- 23 blob 1 23 blob 2 23 blob 3 21 blob 4 21 blob 5 25 blob 6 25 blob 7 how to get results of only 1 of each group id? in this case,there may be multiple images for one group id, i just want one result of each group_id i tried distinct but i will only get group_id. max for image also would not work.

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  • How can I configure Devise for Ruby on Rails to store the emails and passwords somewhere other than in the user model?

    - by TLK
    I'd like to store emails in a separate table and allow users to save multiple emails and log in with any of them. I'd also like to store passwords in a different table. How can I configure Devise to store authentication info elsewhere? Worst case scenario, if I just have to hack into it, is there a generator to just port everything over to the app? I noticed there was a generator for the views. Thanks.

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  • proper way to use list to array?

    - by cometta
    public class TestClass{ private String divisions[] ={}; public void doAction(){ Collection testArray = new ArrayList(); // put testArray will data divisions = (String [] ) testArray.toArray(division); //should i use this divisions = (String [] ) testArray.toArray(new String [] {}); //should i use this? } } if i use case 1, and i call doaction multiple time, the division, something will show wrong records if i use case2, divisions will always show the correct records. is my assumption should use case 2?

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  • How to display records below form on submission in php without the use of database?

    - by OM The Eternity
    I have a form with multiple fields in it along with a image input field, just below the form i have a list to be displayed on every submit of this form... this has to be done without the use of DB.. I think this can be achieved by using session but its not working with me, as evrytime page gets refreshed and session gets recreated/reset.. Please help me in resolving this issue

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  • MySQL count statements error - operand should contain 1 column(s)

    - by jason
    I am trying to do multiple counts everyone was working accept the first sub select (list1) I get an error that reads "Operand should contain 1 column(s)" i'm guessing it has something to do with the AND, but i'm not sure how I would fix this one. Select Count(list0.ustatus) AS finished_count, (Select list1.ustatus, Count(*) From listofupdates list1 Where list1.ustarted != '0000-00-00 00:00:00' AND list1.ustatus != 1) AS start_count, (Select Count(list2.udifficulty) From listofupdates list2 Where list2.udifficulty = 2) AS recheck_count, (Select Count(list3.udifficulty) From listofupdates list3 Where list3.udifficulty = 4) AS question_count From listofupdates list0 Where list0.ustatus = 1

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  • which linux flavour should I use to for my hosting server?

    - by rabbit
    Hi, We plan to host our website on a linux server. The site is created using java based technologies and will run on multiple instances of tomcat with apache in the front. I want to go in for a 64 bit linux OS so that I can install 64bit jvm. So my options are : Ubuntu Fedora CentOS which one (and which version) would be the most stable?

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  • Is it alright to call len() in a loop's conditional statement?

    - by DormoTheNord
    In C, it is considered bad practice to call strlen like this: for ( i = 0; strlen ( str ) != foo; i++ ) { // stuff } The reason, of course, is that it is inefficient since it "counts" the characters in a string multiple times. However, in Python, I see code like this quite often: for i in range ( 0, len ( list ) ): # stuff Is this bad practice? Should I store the result of len() in a variable and use that?

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  • How can I add two projects. Visual Studio 2008

    - by masfenix
    I just created a project so my Solution Explorer looks like this: But I want to add another project which is related to this project but it's going to be a class library and it's going to output a DLL that I could use in any other project. So how can I create a "solution" with multiple projects?

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  • Windows web server [closed]

    - by klork
    I need a windows 2003 hosted server for various websites that I develop and host. Any suggestions on a good deal out there? I need full root access to IIS 6/7 and to be able to host multiple websites using host headers. Thanks

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  • unchecked the store only latest version in VSS for a project?

    - by SCM
    Hi I have an issue in VSS 2005, there is a project in VSS, having multiple folders files in it, and most of the files around 2000 having their property "Store only latest version" is checked. I don't know how it is set. I want to change those around 2000 files property "Store only latest version" to unchecked, so that VSS retain all those files previous version. can it be done through a single command to unchecked this option for all those files in project recursively? Thanks

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