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  • Using a Session Scoped Bean

    - by jboyd
    The following code is returning null: private MyAppUser getMyAppUser(HttpSession session) { MyAppUser myAppUser = (MyAppUser) session.getAttribute("myAppUserManager"); return myAppUser; } Despite the fact that I have the following in my context: <bean id="myAppUserManager" class="com.myapp.profile.MyAppUser" scope="session"/> This doesn't make any sense to me, the "myAppUser" bean is a bean that absolutely can never be null, and I need to be able to reference it from controllers, I don't need it in services or repositories, just controllers, but it doesn't seem to be getting stored in the session, the use case is extremely simple, but I haven't been able to get to the bottom of what's wrong, or come up with a good workaround

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  • What is the best solution to do Reporting on Object data for .NET ?

    - by Peter Fox
    Hi, Our projects are using objects as the data source to reports. Our business layer is returning single objects or IEnumerable. Our reports (quite complex) need to display value-type properties of the object, and its related objects. Typical case would be, from a List, display a master report with category data, then a subreport with data for each Product inside each Category, then a subreport for each Part of each Product, and so on. Reporting from the database is not an option for us. We have tried so far - Reporting Services : works but have to mess around with the XML definition of the report to define the datasource classes, very hard to work with if you use an object datasource, architecturally not too clean - Telerik Reports : quite nice (esp., nice architecture) but seems to have problems with complex reports (master/sub), does not give great paging control, rumored to have performance/crash problems (immature product). Does anyone know a good reporting solution that can be integrated in an ASP.NET application and works well with objects as datasources ?

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  • Class Methods Inheritence

    - by Roman A. Taycher
    I was told that static methods in java didn't have Inheritance but when I try the following test package test1; public class Main { /** * @param args the command line arguments */ public static void main(String[] args) { TB.ttt(); TB.ttt2(); } } package test1; public class TA { static public Boolean ttt() { System.out.println("TestInheritenceA"); return true; } static public String test ="ClassA"; } package test1; public class TB extends TA{ static public void ttt2(){ System.out.println(test); } } it printed : TestInheritenceA ClassA so do java static methods (and fields have) inheritance (if you try to call a class method does it go down the inheritance chai looking for class methods). Was this ever not the case,are there any inheritance OO languages that are messed up like that for class methods?

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  • Create a SQL query to retrieve most recent records

    - by mattruma
    I am creating a status board module for my project team. The status board allows the user to to set their status as in or out and they can also provide a note. I was planning on storing all the information in a single table ... and example of the data follows: Date User Status Notes ------------------------------------------------------- 1/8/2009 12:00pm B.Sisko In Out to lunch 1/8/2009 8:00am B.Sisko In 1/7/2009 5:00pm B.Sisko In 1/7/2009 8:00am B.Sisko In 1/7/2009 8:00am K.Janeway In 1/5/2009 8:00am K.Janeway In 1/1/2009 8:00am J.Picard Out Vacation I would like to query the data and return the most recent status for each user, in this case, my query would return the following results: Date User Status Notes ------------------------------------------------------- 1/8/2009 12:00pm B.Sisko In Out to lunch 1/7/2009 8:00am K.Janeway In 1/1/2009 8:00am J.Picard Out Vacation I am try to figure out the TRANSACT-SQL to make this happen? Any help would be appreciated.

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  • How can I check if a particular jQuery UI function is available and use a different function if it i

    - by Mark B
    I'm writing a jQuery plugin and I would like my code to take advantage of the jQuery UI show(effect, [options], [speed], [callback]) and hide(effect, [options], [speed], [callback]) functions, which allow you to show and hide elements with a nice animation. However, I'd also like my plugin to degrade gracefully if jQuery UI isn't available, switching back to use the basic, non-animating show() and hide() functions present in the standard jQuery API. I'll need to test for the show and hide functions specifically, as even if jQuery UI is available it could potentially be a custom version, without the Effects components included. At first I thought that I might be able to do something like: if(typeof myelement.show('blind', 'slow') == 'undefined') { myelement.show('blind', 'slow'); } else { myelement.show(); } But of course this doesn't work, as even if UI isn't present, show() is still a function, it just has a different signature—so typeof returns object in either case. So, what's the best way for me to check if jQuery UI is available to my plugin? Any help is much appreciated!

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  • JSF 2.1 Spring 3.0 Integration

    - by danny.lesnik
    I'm trying to make very simple Spring 3 + JSF2.1 integration according to examples I googled in the web. So here is my code: My HTML submitted to actionController.actionSubmitted() method: <h:form> <h:message for="textPanel" style="color:red;" /> <h:panelGrid columns="3" rows="5" id="textPanel"> //all my bean prperties mapped to HTML code. </h:panelGrid> <h:commandButton value="Submit" action="#{actionController.actionSubmitted}" /> </h:form> now the Action Controller itself: @ManagedBean(name="actionController") @SessionScoped public class ActionController implements Serializable{ @ManagedProperty(value="#{user}") User user; @ManagedProperty(value="#{mailService}") MailService mailService; public void setMailService(MailService mailService) { this.mailService = mailService; } public void setUser(User user) { this.user = user; } private static final long serialVersionUID = 1L; public ActionController() {} public String actionSubmitted(){ System.out.println(user.getEmail()); mailService.sendUserMail(user); return "success"; } } Now my bean Spring: public interface MailService { void sendUserMail(User user); } public class MailServiceImpl implements MailService{ @Override public void sendUserMail(User user) { System.out.println("Mail to "+user.getEmail()+" sent." ); } } This is my web.xml <listener> <listener-class> org.springframework.web.context.ContextLoaderListener </listener-class> </listener> <listener> <listener-class> org.springframework.web.context.request.RequestContextListener </listener-class> </listener> <!-- Welcome page --> <welcome-file-list> <welcome-file>index.xhtml</welcome-file> </welcome-file-list> <!-- JSF mapping --> <servlet> <servlet-name>Faces Servlet</servlet-name> <servlet-class>javax.faces.webapp.FacesServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> my applicationContext.xml <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <bean id="mailService" class="com.vanilla.jsf.services.MailServiceImpl"> </bean> </beans> my faces-config.xml is the following: <application> <el-resolver> org.springframework.web.jsf.el.SpringBeanFacesELResolver </el-resolver> <message-bundle> com.vanilla.jsf.validators.MyMessages </message-bundle> </application> <managed-bean> <managed-bean-name>actionController</managed-bean-name> <managed-bean-class>com.vanilla.jsf.controllers.ActionController</managed-bean-class> <managed-bean-scope>session</managed-bean-scope> <managed-property> <property-name>mailService</property-name> <value>#{mailService}</value> </managed-property> </managed-bean> <navigation-rule> <from-view-id>index.xhtml</from-view-id> <navigation-case> <from-action>#{actionController.actionSubmitted}</from-action> <from-outcome>success</from-outcome> <to-view-id>submitted.xhtml</to-view-id> <redirect /> </navigation-case> </navigation-rule> My Problem is that I'm getting NullPointerExeption because my mailService Spring bean is null. public String actionSubmitted(){ System.out.println(user.getEmail()); //mailService is null Getting NullPointerException mailService.sendUserMail(user); return "success"; }

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  • Maintaining both free and pro versions of an application

    - by Immortal
    I want to create a PRO version of my application for Android and was wondering how to structure my repository. For know I have a trunk and feature branches. I'd like to put a pro version in another branch but maybe there is a better way? For example, maybe I should create two branches - one for free version, the other for pro? Pro version will have additional features and will be ads-free, so eg. I don't want to include AdMob libraries in the pro version. Do you have any experience or suggestions as to what would be the best way to structure the repository in this case?

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  • Passing single attributes to associated factories

    - by lambdabutz
    I'm looking for a way to pass fields into the factories of associated models without having to explicitly call the factory itself. For example, lets say I have some factories like so: Factory.define :person do |person| person.name "Default Bob" person.sex "M" person.house {|p| p.association(:house)} end Factory.define :house do |house| house.color "Red" house.has_ac true house.suburb {|h| h.association(:suburb)} end Factory.define :suburb do |suburb| suburb.name "Little boxes" end This is fine and all, but if I want to use factories to create someone in a specific house in a specific suburb I have do this: sub = Factory(:suburb, :name => "Blue town") house = Factory(:house, :color => "Blue", :suburb => sub) person = Factory(:person, :name => "Bill", :house => house) While this isn't bad in this small case, my actual models sometimes have 7 or 8 associations, and when I want to create an object whose associations I only care about a single attribute, the code for this starts to get really heavy. Is there somewhat I can pass attributes to nested Factories without having to recall the Factory itself?

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  • Cannot call scalar-valued CLR UDF from select ... from table statement

    - by Henrik B
    I have created a scalar-valued CLR UDF (user defined function). It takes a timezone id and a datetime and returns the datetime converted to that timezone. I can call it from a simple select without problems: "select dbo.udfConvert('Romance Standard Time', @datetime)" (@datetime is of course a valid datetime variable) But if I call it passing in a datetime from a table it fails: "select dbo.udfConvert('Romance Standard Time', StartTime) from sometable" (column StartTime is of course a column of type datetime) The error message is: "Cannot find either column "dbo" or the user-defined function or aggregate "dbo.udfConvert", or the name is ambiguous." This message is really for beginners that has misspelled something, but as it works in one case and not in the other, I don't think I have done any misspellings. Any ideas?

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  • subversion merge back to trunk

    - by Berryl
    I set up a branch several weeks ago. When some changes were made to the trunk, SVN was committing to the branch, and not the trunk. The changes were minor and applicable to the branch anyway, so I assumed this is how the branch should work. Now that the branch work is finished, I merged back the branch back to my working trunk, assuming SVN would replace the old trunk with the new branch in the repository as well. That is not the case though. My repository trunk is out of date. I would like to make the repository trunk be same as the branch and then delete the branch. How can I do this? Cheers, Berryl Note: I am using tortoise / visualvsn client.

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  • Which design pattern should I be using?

    - by Gabriel
    Here's briefly what I'm trying to do. The user supplies me with a link to a photo from one of several photo-sharing websites (such as Flickr, Zooomr, et. al). I then do some processing on the photo using their respective APIs. Right now, I'm only implementing one service, but I will most likely add more in the near future. I don't want to have a bunch of if/else or switch statements to define the logic for the different websites (but maybe that's necessary?) I'd rather just call GetImage(url) and have it get me the image from whatever service the url's domain is from. I'm confused how the GetImage function and classes should be designed. Maybe I need the strategy pattern? I'm still reading and trying to understand the various design patterns and how I could make one fit in this case. I'm doing this in C#, but this question is language-agnostic.

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  • Can't resolve CalledFromWrongThreadException with Handler

    - by michel
    I will try to keep it simple: In my main activity I make a handler: public class ARViewer extends ARDisplayActivity { public final MHandler mHandler = new MHandler(this); public void onCreate(Bundle savedInstanceState) { ... The class MHandler: public final class MHandler extends Handler{ //main activity private ARViewer arnv; public MHandler(ARViewer arnv){ this.arnv = arnv; } @Override public void handleMessage(Message msg) { ... case H_RR : arnv.setContentView(R.layout.routeplanner); break; ... super.handleMessage(msg); } } But if I call the handleMessage method from a callback function in a other Class, definitely from a other thread, I still get the exception message: CalledFromWrongThreadException (Only the original thread that created a view hierarchy can touch its views) : public void rFound(Route route) { Message msg = new Message(); msg.what = MHandler.H_RR; ARViewer.arnv.mHandler.handleMessage(msg); }

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  • php preg_match pattern to extract a specific information, regex

    - by Michael
    I need to extract a specific Id from a html document but the problem is that the id must not "be used". Here is the html content http://pastebin.com/wF2dx8JZ As you may see there are different html blocks . Some of them contain the "Used" word so I need to extract only the first id which is not used. Basically I can write a simple pattern like : $pattern = "/javascript:tw(.*))/"; preg_match_all($pattern, $content, $matches); $id = $matches[1][0]; However in this case I'm also getting the "ids" which are used so I don't know how to exclude them from the equation . Any idea would be highly appreciated.

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  • How do I force SSL for some URLs and force non-SSL for all others?

    - by brad
    I'd like to ensure that certain URLs on my site are always accessed via HTTPS while all other URLs are accessed via HTTP. I can get either case working in my .htaccess file, however if I enable both, then I get infinite redirects. My .htaccess file is: <IfModule mod_expires.c> # turn off the module for this directory ExpiresActive off </IfModule> Options +FollowSymLinks AddHandler application/x-httpd-php .csv RewriteEngine On RewriteRule ^/?registration(.*)$ /register$1 [R=301,L] # Force SSL for certain URL's RewriteCond %{HTTPS} off RewriteCond %{REQUEST_URI} (login|register|account) RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L] # Force non-SSL for certain URL's RewriteCond %{HTTPS} on RewriteCond %{REQUEST_URI} !(login|register|account) RewriteRule ^(.*)$ http://%{HTTP_HOST}%{REQUEST_URI} [R=301,L] # Force files ending in X to use same protocol as initial request RewriteRule \.(gif|jpg|jpeg|jpe|png|ico|css|js)$ - [S=1] # Use index.php as the controller RewriteCond %{REQUEST_URI} !\.(exe|css|js|jpe?g|gif|png|pdf|doc|txt|rtf|xls|swf|htc|ico)$ [NC] RewriteCond %{REQUEST_URI} !^(/js.*)$ RewriteRule ^(.*)$ index.php [NC,L]

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  • Resources to learn about engineering aspects of data analytics (OLAP, warehousing, ETL, etc.)

    - by JT
    I'm a math/stats guy, interested in learning more about the engineering aspects of "data analytics" (this may be an overly broad term, this is a case of "I don't know what I don't know", so I'm not sure how to be more specific). I'm fine with manipulating and analyzing the data once it's already stored somewhere and I can access it, and I'm fine with writing scripts and SQL queries (and have a general knowledge of things like normalization). What I don't know is the whole engineering process of capturing and storing the data. For example, terms I've heard thrown about that I only vaguely understand the meaning of include: - OLAP, OLTP - Data warehousing - ETL - ??? What's a good book (or any other resource) to learn about these kinds of things? What are things I should know about database design (normalization seems kinda "obvious" to me, something I would have done even before I knew the term -- is there anything else?)? In other words, for jobs falling under the umbrella term of "analytics engineer", what kinds of things should I know?

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  • Efficient calculation of matrix cumulative standard deviation in r

    - by Abiel
    I recently posted this question on the r-help mailing list but got no answers, so I thought I would post it here as well and see if there were any suggestions. I am trying to calculate the cumulative standard deviation of a matrix. I want a function that accepts a matrix and returns a matrix of the same size where output cell (i,j) is set to the standard deviation of input column j between rows 1 and i. NAs should be ignored, unless cell (i,j) of the input matrix itself is NA, in which case cell (i,j) of the output matrix should also be NA. I could not find a built-in function, so I implemented the following code. Unfortunately, this uses a loop that ends up being somewhat slow for large matrices. Is there a faster built-in function or can someone suggest a better approach? cumsd <- function(mat) { retval <- mat*NA for (i in 2:nrow(mat)) retval[i,] <- sd(mat[1:i,], na.rm=T) retval[is.na(mat)] <- NA retval } Thanks.

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  • How to use OptionParse to allow only one flag

    - by dorelal
    There are only three ways to invoke install.sh ./install.sh ./install.sh --force ./install.sh -f I can write it easily. However I am trying to make use of OptionParse. This is what I have so far. def self.parse option = {} optparse = OptionParser.new do |opts| opts.banner = "Usage: ./install.sh [--force]" opts.on('-f', '--force', '') do |dir| option[:force] = true end end begin optparse.parse! rescue OptionParser::InvalidOption => e puts e end end How do I provide feedback to user in case user provides something other than -f or --force.

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  • Initiate a PHP class where class name is a variable

    - by ed209
    I need some help with an error I have not encountered before and can't seem to find anywhere. In a PHP mvc framework (just from a tutorial) I have the following: // Initiate the class $className = 'Controller_' . ucfirst($controller); if (class_exists($className)) { $controller = new $className($this->registry); } $className is showing the correct class name (case is also correct). But when I run it I get this in the apache error log (no php error) [Wed Mar 31 10:34:12 2010] [notice] child pid 987 exit signal Segmentation fault (11) Process id is different on every call. I am running PHP 5.3.0 on os x 10.6. This site seems to work on 5.2.11 on another Mac. Not really sure where to go next to debug it. I guess it could be an apache setting as much as a php bug or a problem with the code... any suggestions on where to look next?

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  • Finding recurrence relations of an algorithm

    - by Roarke
    I'm reading my algorithms text book, and I'm reading about recurrence relations and finding the algorithms big O complexity. I run across this line "In the case of the merge-sort algorithm, we get the recurrence equation: t(n) = b if n < 2 = 2t(n/2) +bn if n >= 2 for b > 0 my response was "how the heck did we know that?!?!" So i'm wondering if there is a systematic approach, or just a logical way of getting these recurrence relations from the algorithms can some one explain where the b and the two 2's come from?

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  • Programming a loopback-device consisting of several files in Linux

    - by dubbaluga
    Hej, it is relatively easy to use a file for emulating a block-device using losetup in Linux: http://www.walkernews.net/2007/07/01/create-linux-loopback-file-system-on-disk-file/ Can anyone please give me a hint on what to look for in case I want to program my own block-device which is based on several files I'm taking content from? For your understanding, I would like to let's say take bytes 1-500 and 1.000-3.000 from file1 and bytes 501-999 and bytes 3.001 to 5.000 from file2 to offer them as a combined block-device. My prefered programming language is Python and I want to write my program in user-space as much as possible. For Windows I found such an implementation. It's called FileDisk and HttpDisk and it can be found here: http://www.acc.umu.se/~bosse/ Thanks in advance and regards, Rainer

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  • Why doesn't SetNotifyWindowMessage() call my WndProc()?

    - by manuel
    I'm using WinForms, and I'm trying to get SetNotifyWindowMessage() to call the WndProc, but it does not do so. The function call: HRESULT initSAPI(HWND hWnd) { ... if(FAILED( g_cpRecoCtxt->SetNotifyWindowMessage( hWnd, WM_RECOEVENT, 0, 0 ))) MessageBoxW(hWnd, L"Error sending window message", L"SAPI Initialization Error", 0); ... } The WndProc: LRESULT WndProc (HWND hWnd, UINT message, WPARAM wparam, LPARAM lparam) { case WM_RECOEVENT: ProcessRecoEvent(hWnd); break; default: return DefWindowProc(hWnd, message, wParam, lParam); } Note: initSAPI() is called on a mouse click event.

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  • How to make a table, which is wider than screen size, scrollable?

    - by understack
    I've a table with 2 columns and each column is 800px wide. I want to show this table in 800x50 window. So there should be horizontal and vertical scrollbar to view complete table. While I've found few related solutions (this and this) on SO, they only work if table width is smaller than screen size. In my case screen size is 1200px and total table width is 1600px. How could I do this? i want to achieve something like this.

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  • nested repeaters - how to sort

    - by Cristian Boariu
    Hi guys, I have a table: Category with some sort of categories category1 category2 category3 I have another table Subcategory which has a fk to Category. So, each category1 can have subcategoryB, subcategoryA, subcategoryZ. Well... i've made two repeaters. The first one is binded to a linq data source which takes the categories from the parent table. The children repeater is binded to that foreign key like: DataSource='<%# Eval("Subcategories_1s") %' So the result is: category1 subcategoryB subcategoryA subcategoryZ category2 etc. Well, the strange question is: how can i order the subcategories alphabetically? If i'd have binded the children repeater to a linq it would be easy. But in this case...?

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  • Regular Expression - capturing contents of <select>

    - by joey mueller
    I'm trying to use a regular expression to capture the contents of all option values inside an HTML select element For example, in: <select name="test"> <option value="blah">one</option> <option value="mehh">two</option> <option value="rawr">three</option> </select> I'd like to capture one two and three into an array. My current code is var pages = responseDetails.responseText.match(/<select name="page" .+?>(?:\s*<option .+?>([^<]+)<\/option>)+\s*<\/select>/); for (var c = 0; c<pages.length; c++) { alert(pages[c]); } But it only captures the last value, in this case, "three". How can I modify this to capture all of them? Thanks!

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  • Find a name in a list if the name is spelt wrong

    - by Matt
    I've got a list of names which some code checks against to see if the person exists, and if so do some stuff.. My issue is that I want to handle the case of the name being entered incorrectly.. I.e. I have a list of names Bob Frank Tom Tim John If I type in Joohn, I want it to ask me if I meant John. If I type Tm, I get asked if I meant Tim, if I say no, it asks if i meant Tom.. Etc.. Has anyone done something like this before?

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