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  • How to access functions in extended classes efficiently?

    - by nischayn22
    In PHP I have classes as below class Animal { //some vars public function printname(){ echo $this->name; } } class AnimalMySql extends Animal { static public function getTableFields(){ return array(); } } class AnimalPostgreSql extends Animal { static public function getTableFields(){ return array(); } } Now I have an object $lion = new Animal(); and I want to do if($store == mysql) //getTableFields from class AnimalMySql else //getTableFields form class AnimalPostgreSql I am new to OOP and not sure what is the best way to call the method from the specific class P.S. Please leave a note with the answer to explain the efficiency of the approach

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  • How to separate and maintain customer specific code

    - by WYSIWYG
    I am implementing customer specific code and currently following simple approach like if (cusomterId == 23) do it. I want to separate out all the customer related code in separate place. But I have following problems. In code is in 1. Stored procs 2. Plain old classes. 3. Controllers 4. Views I came up with two solutions. First is to create table CustomerFunctionlity with columns CustomerId, FunctionalityName, method/Proc, inputs/outputs With this table I can simply check if exists, execute given function. Another way is creating a factory which returns customer related object for an interface. I am writting small end to end customer specific functionalities. How can I write maintenable code. Thanks

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  • Oracle Event: Database Enterprise User Security

    - by user12603048
    One of the high-value benefits of an integrated Identity and Access Management platform is the ability to leverage a unified corporate directory as the primary authentication source for database access. On July 11, 2012 at 08:00 am PDT, Oracle will host a webcast showing how Enterprise User Security (EUS) can be used to externalize and centrally manage database users in a directory server. The webcast will briefly introduce EUS, followed by a detailed discussion about the various directory options that are supported, including integration with Microsoft Active Directory. We'll conclude how to avoid common pitfalls deploying EUS with directory services. Discussion topics will include Understanding EUS basics Understanding EUS and directory integration options Avoiding common EUS deployment mistakes Make sure to register and mark this date on your calendar! - Click here to register.

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  • Easy to use database with views for a medical student doing research?

    - by Sarah
    I'm having trouble finding a tool that does this for my friend (without designing it myself). What is needed is a simple program with a database where input forms and views can be designed and saved. A patient table might consist of, say, 50 columns, so it is imperative that it is possible to make columns be able to default, say, through a form for submission of data. By views I mean something like "saved selections" based on various criteria (WHERE runny_nose=True...) but as friendly as possible to save, and export options would be nice. Does this exist at all? It seems at one hand trivial and on the other, my Google fu is failing.

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  • MySQL tables corrupted and need to be repaired,how to fix them and how to prevent this [on hold]

    - by Hbirjand
    We have developed a software that uses,MySQL database,and after some month of usage,some of the database tables had been corrupted and need to be repaired,what is the cause of this corruption? How can we fix them? How can we prevent the database tables from corruption. Because of the corruption,we are not able to create a backup using Navicat,and we can not generate a dump too. Is that possible to fix this tables using MySQL engine,and some of this corruption is about empty fields in database tables.

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  • How should I define my Java Objects?

    - by HonorGod
    I have a data grid where I sort of show the following information - All Guests Total Adults = 22 Total Children = 27 Confirmed Total Adults = 9 Total Children = 13 Country = Germany Total Adults = 5 Total Childres = 6 Friends Adults = 2 Children = 2 Relatives Adults = 3 Children = 4 Country = USA Total Adults = 4 Total Childres = 7 Friends Adults = 2 Children = 5 Relatives Adults = 2 Children = 2 Tentative Total Adults = 13 Total Children - 14 Country = Australia Total Adults = 7 Total Childres = 8 Friends Adults = 2 Children = 3 Relatives Adults = 5 Children = 5 Country = China Total Adults = 6 Total Childres = 6 Friends Adults = 2 Children = 4 Relatives Adults = 4 Children = 2 And in the database what I have is data at the lowest level which is Friends / Relatives and the corresponding countries set as a look-up value which in indirectly connected to another look-up that can tell me if they fall under confirmed or tentative. I guess my question is how do I layout my Java Object and perform the aggregations and give it back to the client. I am not sure if I am clear with my question, but feel free to comment so I can update the question accordingly.

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  • Is there an imperative language with a Haskell-like type system?

    - by Graham Kaemmer
    I've tried to learn Haskell a few times over the last few years, and, maybe because I know mainly scripting languages, the functional-ness of it has always bothered me (monads seem like a huge mess for doing lots of I/O). However, I think it's type system is perfect. Reading through a guide to Haskell's types and typeclasses (like this), I don't really see a reason why they would require a functional language, and furthermore, they seem like they would be perfect for an industry-grade object-oriented language (like Java). This all begs the question: has anyone ever taken Haskell's typing system and made a imperative, OOP language with it? If so, I want to use it.

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  • using static methods and classes

    - by vedant1811
    I know that static methods/variables are associated with the class and not the objects of the class and are useful in situations when we need to keep count of, say the number of objects of the class that were created. Non-static members on the other hand may need to work on the specific object (i.e. to use the variables initialized by the constructor) My question what should we do when we need neither of the functionalities? Say I just need a utility function that accepts value(s) and returns a value besed solely on the values passed. I want to know whether such methods should be static or not. How is programming efficiency affected and which is a better coding practice/convention and why. PS: I don't want to spark off a debate, I just want a subjective answer and/or references.

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  • Visual C++, CMap object save to blob column

    - by ilansch
    I have a MFC CMap object, each object stores 160K~ entries of long data. I need to store it on Oracle SQL. we decided to save it as a blob. since we do not want to make additional table. we also thought about saving it as local file and point the SQL column to that file, but we rather just keep it as blob on the server and clear the table every couple of weeks. The table has a sequential key as ID, and 2 column of time. I need to add the blob column in order to store on every row that CMap. Can you recommend a guide to do so (read/write Map to blob or maybe a clob) ? Thanks.

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  • mysql database cannot connect with cpanel [closed]

    - by Rafee
    And this question was asked on http://stackoverflow.com/questions/8182119/mysql-database-cannot-connect-with-cpanel <?php $con1 = mysql_connect("mywebsiteip","mysql_username","mysql_user_password"); if(!$con1) { die ("Could not connect " . mysql_error()); } else { echo "Good connection"; } mysql_close($con1); ?> When i run it, it cannot connect to mysql database over cpanel. and i even tried up $con1 = mysql_connect("mywebsiteip:portnumber","mysql_username","mysql_user_password"); Can any let me know, which one is good way.

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  • Rotate an object given only by its points?

    - by d33tah
    I was recently writing a simple 3D maze FPP game. Once I was done fiddling with planes in OpenGL, I wanted to add support for importing Blender objects. The approach I used was triangulization of the object, then using Three.js to export the points to plaintext and then parsing the result JSON in my app. The example file can be seen here: https://github.com/d33tah/tinyfpp/blob/master/Data/Models/cross.txt The numbers represent x,y,z,u,v of a single vertex, which combined in three make a triangle. Then I rendered such an object triangle-by-triangle and played with it. I could move it back and forth and sideways, but I still have no idea how to rotate it by some axis. Let's say I'd like to rotate all the points by five degrees to the left, how would a code doing it look like?

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  • Improve Your Database Unit Testing Skills and Win Free Stuff

    As the SQL Developer community grows to embrace the benefits of test-driven development for databases, so the importance of learning to do it properly increases. One way of learning effective TDD is by the use of code kata – short practice sessions that encourage test-first development in baby steps. I have a limited number of licences for SQL Test to give away free – just for practicing a bit of TDD and telling me about it. Keep your database and application development in syncSQL Connect is a Visual Studio add-in that brings your databases into your solution. It then makes it easy to keep your database in sync, and commit to your existing source control system. Find out more.

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  • How to deal with OOP design problems in interviews?

    - by haps10
    This is a question where I seek guidance from fellow/senior developers to get into my dream company - it's a pioneer in OOP and Agile. I've already failed once to clear an interview. One part I feel most challenging is to come up with a proper Object Oriented design(classes, interfaces, methods, interactions etc.) in a very short time for certain situations like Pacman, Game Of Life and so on. As the problems are unprecedented ones - my approach is mostly to try different things and then make decisions - which they feel is not clear and not what they expect from a developer with 5+ years of experience. I've already studied a few books on patterns, OOP - it didn't help me much and I think it'll take a bit more than that. Could some one please guide on what specifically shall I practice so that I can do better at design problems as above. I want to refine my approach and have a better thought process.

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  • Name for this antipattern? Fields as local variables

    - by JSB????
    In some code I'm reviewing, I'm seeing stuff that's the moral equivalent of the following: public class Foo { private Bar bar; public MethodA() { bar = new Bar(); bar.A(); bar = null; } public MethodB() { bar = new Bar(); bar.B(); bar = null; } } The field bar here is logically a local variable, as its value is never intended to persist across method calls. However, since many of the methods in Foo need an object of type Bar, the original code author has just made a field of type Bar. This is obviously bad, right? Is there a name for this antipattern?

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  • How to force a drop of MSSQL Server database

    - by ng01
    I am trying to delete an MSSQL Server database, however I am having no luck. I have tried multiple things such as user ALTER DATABASE my_database SET RESTRICTED_USER WITH ROLLBACK IMMEDIATE; GO DROP DATABASE my_database; GO I have also tried to right click on it a delete it. This does not work, it tells me "Cannot drop database "ima_debts" because it is currently in use". The thing is there is definately no other user connected to it. In fact I disabled TCP/IP for the database and restarted it. Not even "Microsoft SQL Server Management Studio (Administrator)" is connected to it. I have made sure to login to "master". Why is it telling me it is currently in use. Is it possible for me to delete perhaps a directory or something from the file system to get rid of this database? Any help would be appreciated. Thanks.

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