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• JPA persistence.xml share same jar file

  - by user213855

  Hi! I'm wondering if I can share the same jar file for several persistence units.. I mean: I have two persistence units described in my persistence.xml file and the entities are not in the same JAR. Entities are in a separated JAR file but, in that one, there are entites for both persistence units. I think I red somewhere that I coould use tag something like this: externalEntities.jar#com.mycompany.EntityA so I could separate them. I tried this solution and it doesn't work. Now I guess that it couldn't be done to package all entities (for two different persistence units) in the same JAR file. What do yo think?

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• How to add class to openframeworks project in VS2012

  - by Mr Bell

  I am normally a C# guy but trying to get into c++. I made myself a new openframeworks project by copying and pasting one of the example projects and then renaming everything to my project name. (If there is an easier way, I would love to hear it) This project has the .cpp and .h files in a sub folder called "src" which are in turn organized into virtual folders (filters???) in visual studio. How can I add a class to this project from within visual studio? If I right click on the src filter in the solution explorer and hit add class. It creates the class files at the root of the project not in the src folder. I mean it does this both in the solution explorer and where it physically places the files. This is a problem because I can't include my class files in the rest of my app, presumably because they aren't in the same folder What is the proper way to add a class file?

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• Know if a variable is a native object in javascript

  - by mck89

  Hi, is there a way to know if a variable passed into a function is a native object? I mean, i have a function that requires only native objects as arguments, for every other type of variable it throws an error. So: func(Array); //works func(String); //works func(Date); //works func(Object); //works ... func([]); //Throwr error func({}); //Throws error I want to know if there's a way to distinguish between native objects and everything else.

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• Archiving an Entire Rails Site

  - by Pygmalion

  I have a Ruby on Rails site that was only needed for a short period of time during which users added various objects to a mySQL database, commenting on them, associating themselves with them, etc. etc. etc. The question is this: the site is no longer needed until a week next year around this time when I will clear the database and use it again (starting from scratch). What's the best way to archive the current site so that the existing content is still viewable but no new content can be added? By best way, I mean the method by which the least system resources will be used, the server will be the safest, etc. Any suggestions?

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• Is there anyway I can fix a webview?

  - by Legend

  I am trying to load a webpage into a sample webview that I created: public class HelloWebview extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); WebView webview; webview = (WebView) findViewById(R.id.webview); webview.getSettings().setDefaultZoom(ZoomDensity.FAR); webview.setHorizontalScrollBarEnabled(false); webview.setVerticalScrollBarEnabled(false); webview.getSettings().setJavaScriptEnabled(true); webview.loadUrl("http://10.0.2.2/index.html"); } } Initially, I had a problem with the scrollbars so I added the two lines to disable them. Now, I am still able to pan around the webpage though the scroll bars are not visible. How can I fix the view so that I am not able to pan (or scroll) the webpage? By panning, I mean moving around the webpage with an onTouch event.

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• how to hook up default beforeunload event on an aspx page ?

  - by Nikhil Vaghela

  I have a custom web part placed on one of the application page in SharePoint. This page it seems already have a function which gets executed on windows beforeunload javascript event. My problem is that i too need to execute some client side code (to prompt user for any unsaved changes in my web part) on windows beforeunload event. How can i achieve this ? I mean let the default event be fired as well as call my function also ? Appreciate any help. Nikhil.

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• UIWebView memory management

  - by wolfrevo

  Hello, I have a problem with memory management. I am developing an application that makes heavy use of UIWebView. This app generates dynamically lots of UIWebViews while loading content from my server. Some of these UIWebViews are quite large and have a lot of pictures. If I use instruments to detect leaks, I do not detect any. However, lots of objects are allocated and I suspect that has to do with the UIWebViews. When the webviews release because no longer needed, it appears that not all memory is released. I mean, after a request to my server the app creates an UITableView and many webviews (instruments say about 8Mb). When user tap back, all of them are released but memory usage only decrements about 2-3 Mb, and after 5-10 minutes using the app it crashes. Am I missing something? Anyone know what could be happening? Thank you!

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• Java : Storing Data in Array Of Object from JOptionPane Dialog

  - by Bader

  hi guys i need to know how i can insert data inside objects inside an array of objects using my already made Set methods. i need to know how should i do it through user , i mean JOptionPane input dialog [code] student[] s=new student[5]; for (int i=1 ; i <= s.length ;i++) { s[i] = new student(i,"AAA","Ecommerce",0.0); } for (int i=1; i<=s.length;i++) { name = JOptionPane.showInputDialog("Please Write Name for student n " + i); major = JOptionPane.showInputDialog("Please Write Major for student n " + i); gpa =Double.parseDouble(JOptionPane.showInputDialog("Please Write GPA for student n " +i)); s[i]=new student(i,name,major,gpa); } [/code] i tried to do vars here that get data from user by JOptionPane, but it seems that i only use my already made constructor , not the Set methods. i need to use the methods because it has some validation code inside it. any ideas ?

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• "Unable to start program" on Debug Immediately After Successful Build

  - by TZ_Geek

  When I try to run my first application with the debugger, I get a pop up which says: Visual C__ 2008 Express Edition This project is out of date: ProgName - Debug Win32 Would you like to build it? [Yes[ [No] [Cancel] [ ] Do not show this dialog again? I find this somewhat bothersome, because the very last thing that I did just before that was build the application. And the build did complete successfully (immediately before I clicked on Start Debugging -- F5.) The second time I pressed with wrong cilck on the Answer [No] on the same msg Now, I can't compile my apps What exactly does "do not show this dialog again" mean? It sounds to me like its going to remember my answer and use the same answer every time this situation occurs in the future. I did some stuffs like "Clean Solution" then "Build Solution" then "Start Debugging" ,but the same problem what's the solution ,how can I reset this message to make it work again .

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• Push notification not working for the production environment

  - by Marcelo

  I have spent a whole day on this already but still didn't go anywhere. When I run my app in the development mode, I can get the push messages I send to myself thru PushMeBaby without a problem. However, when I try to test it in the production environment, I cannot get any push. I re-generated all the certificates and provisioning profiles, used the aps_production_identity.cer as the certificate for push, changed the ssl to gateway.push.apple.com, and did a release build for the app, but still couldn't get it to work. I found that in PushMeBaby, the line result = SSLHandshake(context); returns error -9844. Does it mean that something is wrong with the aps_production_identity.cer file? This is driving me nuts, can somebody offer a little help? Much appreciated!!!

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• Consultant "branding" problem

  - by James Jones

  Where I work, we employ a consultant to do a considerable amount of work for us to hold us over until we can hire/train more staff. He has been working with us for quite a long time now, and he has always had this strange habit of leaving his initials on EVERYTHING he touches, as if its his sort of branding or advertising. And by everything, I mean: Database names Table names Variable names Web service names File names Server names etc... Is this a common practice among consultants? We politely asked if he could remove some of the branding, but he typically scoffs and quotes exorbitant time estimates to perform such 'silly' refactorings. I guess we could leave it alone, but it's really annoying to have to type out his name every time we reference something he made. Any recommendations on how to approach this problem? Edit: Our contract with him states that we "own" everything he makes for us.

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• How come string.maketrans does not work in Python 3.1?

  - by ShaChris23

  I'm a Python newbie. How come this doesn't work in Python 3.1? from string import maketrans # Required to call maketrans function. intab = "aeiou" outtab = "12345" trantab = maketrans(intab, outtab) str = "this is string example....wow!!!"; print str.translate(trantab); When I executed the above code, I get the following instead: Traceback (most recent call last): File "<pyshell#119>", line 1, in <module> transtab = maketrans(intab, outtab) File "/Library/Frameworks/Python.framework/Versions/3.1/lib/python3.1/string.py", line 60, in maketrans raise TypeError("maketrans arguments must be bytes objects") TypeError: maketrans arguments must be bytes objects What does "must be bytes objects" mean? Could anyone please help post a working code for Python 3.1 if it's possible?

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• Does Mac address base restriction is possible over Internet???

  - by sahil

  Hi Frineds, I want to restrict the access into my server on MAC Address base over internet... does it possible??? or there any other way of restriction over internet instead of IP address possible?? (My users are connection into my adito base ssl vpn server and i want to give them access on base of MAC address or any other possible method not by there IP address...because they are on roaming Internet IP. thanking you, sahil.

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• Filezilla connection error

  - by Kumar P

  I have RHEL 5 lan server with squid 2.6 stable proxy settings, Under this have some windows xp desktops Now i installed filezilla ftp client in windows xp, for give services to my client's websites But i can't connect ftp servers throw filezilla , I set generic proxy too. ( HTTP/1.1 USING CONNECT method ) I get error message like this, Status: Connecting to (ftp hostname) through proxy Status: Connecting to hostname:port... Status: Connection with proxy established, performing handshake... Response: Proxy reply: HTTP/1.0 403 Forbidden How can i solve this problem ?

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• how does ospf control flooding?

  - by iamrohitbanga

  what method is used by ospf protocol to prevent looping of flooded packets for link state advertisements? The packet header does not contain any timestamp. How do the routers recognize that it is the same advertisement that they sent before?

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• hierarchical clustering with gene expression matrix in python

  - by user248237

  how can I do a hierarchical clustering (in this case for gene expression data) in Python in a way that shows the matrix of gene expression values along with the dendrogram? What I mean is like the example here: http://www.mathworks.cn/access/helpdesk/help/toolbox/bioinfo/ug/a1060813239b1.html shown after bullet point 6 (Figure 1), where the dendrogram is plotted to the left of the gene expression matrix, where the rows have been reordered to reflect the clustering. How can I do this in Python using numpy/scipy or other tools? Also, is it computationally practical to do this with a matrix of about 11,000 genes, using euclidean distance as a metric? thanks.

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• Using core plot for iPhone, drawing date on x axis

  - by xmax

  I have available an array of dictionary that contains NSDate and NSNumber values. I wanted to plot date on X axis. for plotting I need to supply xRanges to plot with some decimal values.I don't understand how can i supply NSdate values to xRange (low and length). And what should be there in this method: -(NSNumber *)numberForPlot:(CPPlot *)plot field:(NSUInteger)fieldEnum recordIndex:(NSUInteger)index I mean how my date value will be returned as NSNumber..? I think i should use some interval over there.but what should be the exact conversion..? can any one explain me what are the exact requirement to plot the date on xAxis..? I am plotting my plot in half of the view.

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• Exceptions in constructors

  - by FredOverflow

  In C++, the lifetime of an object begins when the constructor finishes successfully. Inside the constructor, the object does not exist yet. Q: What does emitting an exception from a constructor mean? A: It means that construction has failed, the object never existed, its lifetime never began. [source] My question is: Does the same hold true for Java? What happens, for example, if I hand this to another object, and then my constructor fails? Foo() { Bar.remember(this); throw new IllegalStateException(); } Is this well-defined? Does Bar now have a reference to a non-object?

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• JSON - msg.d is undefined error

  - by Narmatha Balasundaram

  Hi - Webmethod returns an array of objects - something like this {"d": [[{"Amount":100,"Name":"StackOverflow"}, {"Amount":200,"Name":"Badges"}, {"Amount":300,"Name":"Questions"}]]} On the client-side, when the JSON is referenced using msg.d, I get a msg.d is undefined error. I am using jQuery JavaScript Library v1.4.2 How do I access the elements in the array of objects? Adding more findings, code and questions: I don't see __type in the JSON object that is returned. Does that mean that the object sent from the server is not JSON formatted? When the __type is not a part of the response, I will not be able to use msg.d? (msg.d is undefined) Some more: 1. I can access the elements from client side using msg[0][0].Amount - How can I specifically JSON format my return object (from the server)

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• Thoughts on a Shoutbox anyone?

  - by sologhost

  I'm wanting to create a shoutbox, though I'm wondering if there is another way to go about this rather than using setInterval to query the database for new shouts every number of seconds. Honestly, I don't like having to go about it this way. Seems a bit redundant and repetitive and just plain old wrong. Not to mention the blinking of the shouts as it grabs the data. So I'm wondering on how the professionals do this? I mean, I've seen shoutboxes that work surperb and doesn't seem to be using any setInterval or setTimeout javascript functions to do this. Can anyone suggest any ideas or an approach to this that doesn't use setInterval or setTimeout?? Thanks :)

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• How to know what you don't know?

  - by Ivo Danihelka

  Is there a way how to recognize that you don't know something? For example, I had some hard realizations: I didn't know that criticism isn't a good way to teach your friends. I realized that after reading How to Win Friends & Influence People. I didn't know about the fundamental needed for an indutive bias in machine learning. If I have read Mitchell's Machine Learning book early, I would know it. I haven't found it mentioned in other books and papers. Sorry if the question is too generic. The question could also mean: How to know that you are missing something important about your programming language?

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• Problem with extern keyword in C++

  - by Jeff

  What's the difference between the following two declarations? I thought they were equivalent, but the first sample works, and the second does not. I mean it compiles and runs, but the bitmap display code shows blank. I have not stepped through it yet, but am I missing something obvious? GUI_BITMAP is a simple structure describing a bitmap. This is for VC++ 2005, but I think it fails in VC++ 2008 also. Scratching my head on this one... Sample 1: extern "C" const GUI_BITMAP bmkeyA_cap_active; extern "C" const GUI_BITMAP bmkeyA_cap_inactive; Sample 2: extern "C" { const GUI_BITMAP bmkeyA_cap_active; const GUI_BITMAP bmkeyA_cap_inactive; };

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• Sorting list of URLs by length in Jython

  - by Eef

  Hi, I am writing a Jython script to sort a list of URLs. I have a list that looks like this: http://www.domain.com/folder1/folder2/|,1 http://www.domain.com/folder1/|,1 http://www.domain.com/folder1/folder2/folder3/|,1 http://www.domain.com/folder1/|,1 http://www.domain.com/folder1/folder2/|,1 http://www.domain.com/folder1/folder2/|,1 http://www.domain.com/folder1/folder2/folder3/|,1 The pipe and the comma separates the path from the amount of files that are under that path. Is it possible some how use Jython to order the URLs by length, so it would end up look like the below list: http://www.domain.com/folder1/|,1 http://www.domain.com/folder1/|,1 http://www.domain.com/folder1/folder2/|,1 http://www.domain.com/folder1/folder2/|,1 http://www.domain.com/folder1/folder2/|,1 http://www.domain.com/folder1/folder2/folder3/|,1 http://www.domain.com/folder1/folder2/folder3/|,1 Hope you guys get what I mean, any help would be appreciated. Cheers

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• ZipArchive php Class - Does it support all servers?

  - by SoLoGHoST

  Ok, just wondering on the versions of PHP that this class is built into. And if they are built into all platforms (OS's). I'm wanting an approach to search through a zip file and place files using file_put_contents in different filepaths within the webroot. In any case, I'm familiar with how to do this with the ZipArchive class, but I'm wondering if using this class would be a good solution and support MOST, if not ALL servers?? I mean, I'd rather not use a method that requires the Server to have it installed. I'm looking for a solution to this that will support at least MOST servers without having to install the class... Thanks :) Also, I'd like to support opening tar.gz and/or .tgz files if possible, but I don't think the ZipArchive class supports this, but perhaps a different built-in php class does??

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• What operating systems available for an 8-bit microprocessor?

  - by Benoit

  It does not need to be a full fledged OS, but at least have multitasking capabilities (i.e. a scheduler). Please mention what processor architecture it works on. This is a survey, so exact capabilities are not really important. Think of this as being a place to look at for possibilities when your next 8-bit embedded project comes up... I realize that most 8-bit micro do not require an OS, but just as a counter-example, Rabbit Semiconductor offers the RCM3710 processor module with 4 serial ports, a 10-BaseT ethernet port, 512K RAM and 512K Flash. All that for $39. All based around an 8-bit Z80 core. 8-bit does NOT necessarily mean extreme resource constraint.

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