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  • @PersistenceContext cannot be resolved to a type

    - by Saken Kungozhin
    i was running a code in which there's a dependency @PersistenceContext and field private EntityManager em; both of which cannot be resolved to a type, what is the meaning of this error and how can i fix it? the code is here: package org.jboss.tools.examples.util; import java.util.logging.Logger;` import javax.enterprise.context.RequestScoped; import javax.enterprise.inject.Produces; import javax.enterprise.inject.spi.InjectionPoint; import javax.faces.context.FacesContext; /** * This class uses CDI to alias Java EE resources, such as the persistence context, to CDI beans * * <p> * Example injection on a managed bean field: * </p> * * <pre> * &#064;Inject * private EntityManager em; * </pre> */ public class Resources { // use @SuppressWarnings to tell IDE to ignore warnings about field not being referenced directly @SuppressWarnings("unused") @Produces @PersistenceContext private EntityManager em; @Produces public Logger produceLog(InjectionPoint injectionPoint) { return Logger.getLogger(injectionPoint.getMember().getDeclaringClass().getName()); } @Produces @RequestScoped public FacesContext produceFacesContext() { return FacesContext.getCurrentInstance(); } }

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  • Do the ideas of traditional software engineering conflict with the newer agile development technique

    - by fuentesjr
    So as a developer I am seeking to improve not only my coding skills but my design and management skills. Because of this I'm starting to pay more attention to software engineering practices but i'm not sure where agile development fits into the picture. I can appreciate agility in projects but I wonder whether this conflicts with the traditional ways of software engineering practices and research.

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  • The application has stopped unexpectedly: How to Debug?

    - by Android Eve
    Please note, unlike many other questions having the subject title "application has stopped unexpectedly", I am not asking for troubleshooting a particular problem. Rather, I am asking for an outline of the best strategy for an Android/Eclipse/Java rookie to tackle this formidable task of digesting huge amounts of information in order to develop (and debug!) a simple Android application. In my case, I took the sample skeleton app from the SDK, modified it slightly and what did I get the moment I try to run it? The application (process.com.example.android.skeletonapp) has stopped unexpectedly. Please try again. OK, so I know that I have to look LogCat. It's full of timestamped lines staring at me... What do I do now? What do I need to look for? Is there a way to single-step the program, to find the statement that makes the app crash? (I thought Java programs never crash, but apparently I was mistaken) How do I place a breakpoint? Can you recommend an Android debug tutorial online, other than this one?

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  • How to avoid malformed URI sequence error?

    - by Luci
    I'm working with perl. I have data saved on database as  “ and I want to escape those characters to avoid having malformed URI sequence error on the client side. This error seems to happen on fire fox only. The fix I found while googling is not to use decodeURI , yet I need this for other characters to be displayed correctly. Any help? uri_escape does not seem enough on the server side. Thanks in advance. Detalils: In perl I'm doing the following: print "<div style='display:none;' id='summary_".$note_count."_note'>".uri_escape($summary)."</div>"; and on the java script side I want to read from this div and place it on another place as this: getObj('summary_div').innerHTML= unescape(decodeURI(note_obj.innerHTML)); where the note_obj is the hidden div that saved the summary on perl. When I remove decodeURI the problem is solved, I don't get malformed URI sequence error on java script. Yet I need to use decodeURI for other characters. This issue seems to be reproduced on firefox and IE7.

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  • Why do browser vendors make their own css properties?

    - by jitendra
    Why do browser vendors make their own css properties, even they know these will not pass the w3c validation? What is the purpose? Is for their own testing, or for web developers, or to demonstrate browser capabilities to the world and to the W3C organizations and to CSS development team of W3C? is it like a beta version of demonstration? if i use any browser specific for now can they remove that property's support from future versions.will i have to edit my css in future For example: https://developer.mozilla.org/en/CSS_Reference/Mozilla_Extensions

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  • Open and close trac tickets with a single commit

    - by Jerub
    I am looking for a way to add a post-commit or pre-commit hook to my VCS that will allow me to both create and close a trac ticket in one go. The use-case is for when a bug has been found, and corrected, but a single developer who wants to make sure the project manager can see the fix has been done, when it was done and what milestone the fix has been done in. We have a default milestone in trac when creating a ticket, so reflecting that information would be good too.

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  • window.location alternatives in JavaScript

    - by MartyIX
    What is a standardized alternative to window.location.href function? I was checking on w3schools.com that it is implemented in all major browsers so there's no problem but I'm rather curious how to do that properly. From here is the statement that the function is not standardized: https://developer.mozilla.org/en/DOM/window.location Thanks!

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  • Can the adp2 device be flashed with 2.0?

    - by Rick Rodriguez
    Simple question...can the adp2 that I just bought through the Android Market be flashed with Android 2.0? I can't find anything anywhere. The HTC developer support only has system images for the adp1 and adp2 phones up to 1.6. If it can't I will be sending the phone back for a full refund. Thanks.

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  • C# -Fluent interface implementation Help

    - by nettguy
    I am implementing the following piece of code using Fluent Interface design in C# 3.0. The code is working fine. public interface ITrainable { ITrainable AddSkill(string _skill); } public interface ISearchSkill { ISearchSkill SearchSkill(SoftwareEngineer emp,string[] _skills); } public abstract class Person { public Person(){} protected string Name { get; set; } } public class SoftwareEngineer:Person,ITrainable { protected internal List<string> skillSet { get; set; } public SoftwareEngineer() { } public SoftwareEngineer(string name) { Name=name; skillSet = new List<string>(); } public ITrainable AddSkill(string _skill) { skillSet.Add(_skill); return this; } } public class HRExecutive :Person,ISearchSkill { SoftwareEngineer _employee; public HRExecutive() { _employee=new SoftwareEngineer(); } public ISearchSkill SearchSkill(SoftwareEngineer _employee,string[] skills) { this._employee= _employee; foreach (string _skill in skills) { if (_employee.skillSet.Contains(_skill)) { Console.WriteLine(Name + " is trained on " + _skill); } else { Console.WriteLine(Name + " is not trained on " + _skill); } } return this; } } Execution SoftwareEngineer emp1 = new SoftwareEngineer("JonSkeet"); emp1.AddSkill("java").AddSkill("C#").AddSkill("F#"); HRExecutive hr = new HRExecutive(); hr.SearchSkill(emp1, new string[] { "java", "C#" }). SearchSkill(emp1, new string[] { "Oracle", "F#" }); Question : I don't want the skillSet of SoftwareEngineer being accessed by some XXX class.It could be accessed by limited classes.But protected internal List<string> skillSet { get; set; } is the only option (i think) i can declare in order to access the skillSet from HRExecutive.If i do so other XXX class can still access it. How to rewrite the code to prevent it?

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  • C# .net updates versus compile time debugging. How to stop the oddities?

    - by Fox Diller
    Are we reduced to ClickOnce to manage our application state for our users? We use Visual Patch currently. When our users update (we reproduced this) we get errors from the updated versions to our compiled versions. Since our developer state is not 'updated' with Visual Patch how can we monitor and eventual squash the various System.MethodNotFound, and System.NullReferenceException in our updated versions of our application?

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  • An algo for generating code callgraphs

    - by Shrey
    I am working on a project which requires generating some metrices of a code (it can be C/C++/Java/Python). One of the metrices can be that I create a callgraph after parsing the code entered (the programs are expected to be small - probably under 1000L). As of now, I am looking for a way to create a program (it can be C/Python) which can take as input a file (C/C++/Python/Java) and then create a textual output containing approximate calling sequence as well as tokens in the code file. As of now, I have looked at some other tools which do the same thing - like splint, pylint, codeviz etc. So, I have two ways of solving my problem: Read and understand the algorithm these tools use (tokenization-graph generation etc) Or, have a basic algo (something like very high level steps) and then sit down to create each of them as I want them to be. I know, re-inventing the wheel is not a good idea, but, I would still like to give option (2) a shot. Only issue is, currently I am a blank. My question: Does any one have any knowhow about how to create code graphs? Any hints as to what I should do? Any top levels steps which I can follow? Thanks a lot.

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  • Debug assertion does not prompt in IIS 7

    - by Shugi
    Hi, since moving to Windows 7 (IIS 7.5), the debug assertions do not prompt a pop up dialog anymore. I have tested this in a separate project, and noticed that they do work when using the integrated Visual Studio Developer server (Cassini) but they do not work when using IIS Web Server. This is a big issue for us since we are counting on debug assertions to identify potential programming errors, so any help would be appreciated. Thanks. Eyal.

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  • jQuery NewBie Questions: What's the deal with $(document).(ready) ?

    - by Rachel
    Hello, I am newbie to jQuery, just trying to learn it since last couple of days. In my office, there are few experience JavaScript Developer and they work mainly with jQuery for all their needs and whenever I got and talk to them to get some better understanding of how jQuery works and first they say is that on $(document).(ready) you do this and on $(document).(ready) you do that. So my main question is What is the $(document).(ready) and how does it really works ? Any inputs would be highly appreciated.

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  • shouldAutorotateToInterfaceOrientation always get called more than once.

    - by lovecactus
    (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation My code get this event more than once while device is rotating. I'm searching in apple docs for reference but seems no lucky. Could any one offer a hint why this is happening? My code is an apple doc sample code, without any change but some logs. http://developer.apple.com/iphone/library/samplecode/AlternateViews/Introduction/Intro.html#//apple_ref/doc/uid/DTS40008755

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  • Using database in Android

    - by Paul
    Does anyone know a good step by step tutorial for using sqlite on Android? I've found this: http://developer.android.com/guide/topics/data/data-storage.html#db and it ok to start with, but then it wants me to jump into other source code then its difficult to follow. I've tried others on the web, one from screaming penguin and that just kept causing errors with JVM. Advice greatly appreciated. I need to: Create database, with several tables (auto id, declare type) update get

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  • Problem designing google maps app in the application

    - by Rahul Varma
    I have seen the tutorial provided to display google maps here... http://developer.android.com/resources/tutorials/views/hello-mapview.html. But sadly when i try to extend MapActivity instead of Activity the whole program is getting ruined and showing errors starting from onCreate... Whats the solution and how could i get google maps working in my application???

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  • Modern Game Programming

    - by Alon
    Hey. I'm a software and web developer for ~3 years, and I want to start learning 3D network game programming. What is the most modern & fastest way to write 3D PC games? What language? For graphics, should I use a graphics API like Direct3D/OpenGL or is there something less painful? What math/physics skills should I know before starting? Thank you.

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  • Intents? How to register to be alerted for incoming emails?

    - by Justin
    Extreme Android developer newbie here...well, new to Android development, not development in general. I want to write an application that gets notified when emails come into the device, and takes various actions based on data in the email (subject, sender, to, etc). I think what I have to do is create a BroadcastReceiver with an IntentFilter. The problem I'm having is figuring out what Intent(s) I need to "listen" for. Can anyone point me in the right direction? Thanks.

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  • Joomla, Drupal, DotNetNuke or something else for a sport club?

    - by kjm
    I am setting up a web site for a football club and I am wondering which CMS to use. I am a developer but I am doing this as a favour to a friend and would rather grab something with modules in it (registration, events, calender, etc etc) already. I need to be able to customise it but I had a look around and Wordpress looks like a blogging tool. I am wondering if anyone has experience with the above or any others and if shed some light. Thanks

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  • Oracle: Is there a way to get the column data types for a view?

    - by rally25rs
    For a table in oracle, I can query "all_tab_columns" and get table column information, like the data type, precision, whether or not the column is nullable. In SQL Developer or TOAD, you can click on a view in the GUI and it will spit out a list of the columns that the view returns and the same set of data (data type, precision, nullable, etc). So my question is, is there a way to query this column definition for a view, the way you can for a table? How do the GUI tools do it?

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  • iBatis how to solve a more complex N+1 problem

    - by Alvin
    I have a database that is similar to the following: create table Store(storeId) create table Staff(storeId_fk, staff_id, staffName) create table Item(storeId_fk, itme_id, itemName) The Store table is large. And I have create the following java bean public class Store { List<Staff> myStaff List<Item> myItem .... } public class Staff { ... } public class Item { ... } My question is how can I use iBatis's result map to EFFICIENTLY map from the tables to the java object? I tried: <resultMap id="storemap" class="my.example.Store"> <result property="myStaff" resultMap="staffMap"/> <result property="myItem" result="itemMap"/> </resultMap> (other maps omitted) But it's way too slow since the Store table is VERY VERY large. I tried to follow the example in Clinton's developer guide for the N+1 solution, but I cannot warp my mind around how to use the "groupBy" for an object with 2 list... Any help is appreciated!

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  • The use of getters and setters for different programming languages [closed]

    - by leonhart88
    So I know there are a lot of questions on getters and setters in general, but I couldn't find something exactly like my question. I was wondering if people change the use of get/set depending on different languages. I started learning with C++ and was taught to use getters and setters. This is what I understand: In C++ (and Java?), a variable can either be public or private, but we cannot have a mix. For example, I can't have a read-only variable that can still be changed inside the class. It's either all public (can read and change it), or all private (can't read and can only change inside the class). Because of this (and possibly other reasons), we use getters and setters. In MATLAB, I can control the "setaccess" and "getaccess" properties of variables, so that I can make things read-only (can directly access the property, but can't overwrite it). In this case, I don't feel like I need a getter because I can just do class.property. Also, in Python it is considered "Pythonic" to not use getters/setters and to only put things into properties if needed. I don't really understand why its OK to have all public variables in Python, because that's opposite of what I learned when I started with C++. I'm just curious what other people's thoughts are on this. Would you use getters and setters for all languages? Would you only use it for C++/Java and do direct access in MATLAB and Python (which is what I am currently doing)? Is the second option considered bad? For my purposes, I am only referring to simple getters and setters (just return/set the value and do not do anything else). Thanks!

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