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Articles indexed Tuesday May 4 2010

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  • ASP.NET - dynamically creating database connection in datasets

    - by Foo
    I am currently using datasets for my data access layer. I currently store the connection string in the web.config file. I need the ability to change the connection to another database before any queries are processed. Is there an event that is triggered or a base class that can be modified that intercepts the process of retrieving the connection string from the web.config file? Is there any way to handle multiple database connections using the same code base and also take advantage of the connection pooling? I understand the best method is to get rid of datasets and use custom data objects. Any ideas?

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  • Need help with a Linq XML conditional grouping query

    - by FiveTools
    I have the following xml fragment: <BANNER ID="Banner 2" ROW_WIDTH="200"> <BANNER_TEXTS ID="BANNER_TEXTS"> <BANNER_TEXT UNDERLINE="false" SPAN_COL="1" WIDTHT="78px"></BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="3" WIDTHT="234px">Years In Practice</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="3" WIDTHT="234px">Internet Usage</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="4" WIDTHT="312px">Sales Reps Seen / Week</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="3" WIDTHT="234px">Prescription Volume</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="3" WIDTHT="222px">Patient Load</BANNER_TEXT> </BANNER_TEXTS> <BANNER_TEXTS ID="COLUMN_TEXTS"> <BANNER_TEXT UNDERLINE="true" SPAN_COL="1" WIDTHT="78px">Total</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="1" WIDTHT="78px">&#60; 11 years</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="1" WIDTHT="78px">11-20 years</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="1" WIDTHT="78px">21-30 years</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="1" WIDTHT="78px">Light 1-5 hrs</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="1" WIDTHT="78px">Medium 6-10 hrs</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="1" WIDTHT="78px">Heavy &#62;10 hrs</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="1" WIDTHT="78px">0</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="1" WIDTHT="78px">1-2</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="1" WIDTHT="78px">3-5</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="1" WIDTHT="78px">&#62;5</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="1" WIDTHT="78px">1-100</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="1" WIDTHT="78px">101-150</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="1" WIDTHT="78px">&#62;150</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="1" WIDTHT="74px">1-100</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="1" WIDTHT="74px">101-200</BANNER_TEXT> <BANNER_TEXT UNDERLINE="true" SPAN_COL="1" WIDTHT="74px">&#62;200</BANNER_TEXT> </BANNER_TEXTS> <BANNER_TEXTS ID="COLUMN_TEXTS"> <COLUMN_TEXT UNDERLINE="false" SPAN_COL="1">(A)</COLUMN_TEXT> <COLUMN_TEXT UNDERLINE="false" SPAN_COL="1">(B)</COLUMN_TEXT> <COLUMN_TEXT UNDERLINE="false" SPAN_COL="1">(C)</COLUMN_TEXT> <COLUMN_TEXT UNDERLINE="false" SPAN_COL="1">(D)</COLUMN_TEXT> <COLUMN_TEXT UNDERLINE="false" SPAN_COL="1">(E)</COLUMN_TEXT> <COLUMN_TEXT UNDERLINE="false" SPAN_COL="1">(F)</COLUMN_TEXT> <COLUMN_TEXT UNDERLINE="false" SPAN_COL="1">(G)</COLUMN_TEXT> <COLUMN_TEXT UNDERLINE="false" SPAN_COL="1">(H)</COLUMN_TEXT> <COLUMN_TEXT UNDERLINE="false" SPAN_COL="1">(I)</COLUMN_TEXT> <COLUMN_TEXT UNDERLINE="false" SPAN_COL="1">(J)</COLUMN_TEXT> <COLUMN_TEXT UNDERLINE="false" SPAN_COL="1">(K)</COLUMN_TEXT> <COLUMN_TEXT UNDERLINE="false" SPAN_COL="1">(L)</COLUMN_TEXT> <COLUMN_TEXT UNDERLINE="false" SPAN_COL="1">(M)</COLUMN_TEXT> <COLUMN_TEXT UNDERLINE="false" SPAN_COL="1">(N)</COLUMN_TEXT> <COLUMN_TEXT UNDERLINE="false" SPAN_COL="1">(O)</COLUMN_TEXT> <COLUMN_TEXT UNDERLINE="false" SPAN_COL="1">(P)</COLUMN_TEXT> <COLUMN_TEXT UNDERLINE="false" SPAN_COL="1">(Q)</COLUMN_TEXT> </BANNER_TEXTS> </BANNER> I would like to group all the 'BANNER_TEXT' in the second sequence using the first sequence 'BANNER_TEXT' as the key (only include elements where string is not null or empty). The span_col attribute in the first 'BANNER_TEXT' sequence indicates which elements by position in the 2nd sequence are related. An example: 'Years in Practice' would be the first key and the attribute SPAN_COL=3 for that element indicates it would contain '< 11 years', '11-20 years', '21-30 years' (the first grouping of string.empty = Total would be skipped).

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  • What are the advantages of a query using a derived table(s) over a query not using them?

    - by AspOnMyNet
    I know how derived tables are used, but I still can’t really see any real advantages of using them. For example, in the following article http://techahead.wordpress.com/2007/10/01/sql-derived-tables/ the author tried to show benefits of a query using derived table over a query without one with an example, where we want to generate a report that shows off the total number of orders each customer placed in 1996, and we want this result set to include all customers, including those that didn’t place any orders that year and those that have never placed any orders at all( he’s using Northwind database ). But when I compare the two queries, I fail to see any advantages of a query using a derived table ( if nothing else, use of a derived table doesn't appear to simplify our code, at least not in this example): Regular query: SELECT C.CustomerID, C.CompanyName, COUNT(O.OrderID) AS TotalOrders FROM Customers C LEFT OUTER JOIN Orders O ON C.CustomerID = O.CustomerID AND YEAR(O.OrderDate) = 1996 GROUP BY C.CustomerID, C.CompanyName Query using a derived table: SELECT C.CustomerID, C.CompanyName, COUNT(dOrders.OrderID) AS TotalOrders FROM Customers C LEFT OUTER JOIN (SELECT * FROM Orders WHERE YEAR(Orders.OrderDate) = 1996) AS dOrders ON C.CustomerID = dOrders.CustomerID GROUP BY C.CustomerID, C.CompanyName Perhaps this just wasn’t a good example, so could you show me an example where benefits of derived table are more obvious? thanx

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  • Get Eclipse to recognize the maps api

    - by NickTFried
    Hi I'm developing an Android app and trying to incorporate maps into one of my sub-activities. Having followed all of the instructions from Android, my java file will not recognize the "MapActivity" or the import statements to include the needed api. Here is my XML manifest and my class file. <?xml version="1.0" encoding="utf-8"?> <uses-permission android:name="android.permissions.INTERNET"/> <uses-permission android:name="android.permissions.ACCESS_FINE_LOCATION"/> <application android:icon="@drawable/icon" android:label="@string/app_name"> <uses-library android:name="com.google.android.maps" /> <activity android:name=".CadetCommand" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name="RedLight"></activity> <activity android:name="PTCalculator"></activity> </application> <uses-sdk android:minSdkVersion="7"/> here is my java file: package edu.elon.cs.mobile; import com.google.android.maps.MapActivity; import com.google.android.maps.MapView; import android.os.Bundle; public class LandNav extends MapActivity{ } Any suggestion would help.

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  • What do these "Cron Daemon" email errors mean?

    - by Meltemi
    Anyone know what this means? Getting one of these every minute in one user's inbox: From: Cron Daemon <[email protected]> Subject: Cron <joe@mail> /tmp/.d/update >/dev/null 2>&1 To: [email protected] Received: from murder ([unix socket]) by mail.domain.com (Cyrus v2.2.12-OS X 10.3) with LMTPA; Tue, 04 May 2010 10:35:00 -0700 shell-init: could not get current directory: getcwd: cannot access parent directories: Permission denied job-working-directory: could not get current directory: getcwd: cannot access parent directories: Permission denied

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  • There are currently no logon servers available to service the logon request

    - by Adriaan
    I am the guy that was closest to the server :( and am actually a developer. I am getting this error, There are currently no logon servers available to service the logon request, when a machine on the domain is trying to be accessed from other machines from the network. Accessing other machines from this machine works as expected. How should I go about to fix this? We are running a Windows Server 2003 and XP Pro clients.

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  • Django Aggregation Across Reverse Relationship

    - by Tom
    Given these two models: class Profile(models.Model): user = models.ForeignKey(User, unique=True, verbose_name=_('user')) about = models.TextField(_('about'), blank=True) zip = models.CharField(max_length=10, verbose_name='zip code', blank=True) website = models.URLField(_('website'), blank=True, verify_exists=False) class ProfileView(models.Model): profile = models.ForeignKey(Profile) viewer = models.ForeignKey(User, blank=True, null=True) created = models.DateTimeField(auto_now_add=True) I want to get all profiles sorted by total views. I can get a list of profile ids sorted by total views with: ProfileView.objects.values('profile').annotate(Count('profile')).order_by('-profile__count') But that's just a dictionary of profile ids, which means I then have to loop over it and put together a list of profile objects. Which is a number of additional queries and still doesn't result in a QuerySet. At that point, I might as well drop to raw SQL. Before I do, is there a way to do this from the Profile model? ProfileViews are related via a ForeignKey field, but it's not as though the Profile model knows that, so I'm not sure how to tie the two together. As an aside, I realize I could just store views as a property on the Profile model and that may turn out to be what I do here, but I'm still interested in learning how to better use the Aggregation functions.

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  • Unbinding inline onClick not working in jQuery?

    - by Polaris878
    Okay so, I'm wondering how to unbind an inline onclick event in jQuery. You'd think .unbind() would work, however it doesn't. To test this for yourself, play around with the following HTML and JavaScript: function UnbindTest() { $("#unbindTest").unbind('click'); } function BindTest() { $("#unbindTest").bind('click', function() { alert("bound!"); }); } <button type="button" onclick="javascript:UnbindTest();">Unbind Test</button> <button type="button" onclick="javascript:BindTest();">Bind Test</button> <button type="button" onclick="javascript:alert('unbind me!');" id="unbindTest">Unbind Button</button> As you can see, unbinding does not unbind the inline onclick event... however it does unbind the click event added with bind(). So, I'm wondering if there is a way to unbind inline onclick events short of doing the following: $("#unbindTest").get(0).onclick = ""; Thanks

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  • delay loop output in C++

    - by itachisxeyes
    I have a while loop that runs in a do while loop. I need the while loop to run exactly every second no faster no slower. but i'm not sure how i would do that. this is the loop, off in its own function. I have heard of the sleep() function but I also have heard that it is not very accurate. int min5() { int second = 00; int minute = 0; const int ZERO = 00; do{ while (second <= 59){ if(minute == 5) break; second += 1; if(second == 60) minute += 1; if(second == 60) second = ZERO; if(second < 60) cout << "Current Time> "<< minute <<" : "<< second <<" \n"; } } while (minute <= 5); }

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  • expand div with focus-jquery

    - by Joel
    Hi guys, I'm revisiting this after a few weeks, because I could never get it to work before, and hoping to now. Please look at this website-notice the newsletter signup form at the top right. http://www.rattletree.com I am wanting it to look exactly this way for now, but when the user clicks in the box to enter their email address, the containing div will expand (or simply appear) above the email field to also include a "name" and "city" field. I'm using jquery liberally in the sight, so that is at my disposal. This form is in the header so any id info, etc can't be withing the body tag... This is what I have so far: <div class="outeremailcontainer"> <div id="emailcontainer"> <?php include('verify.php'); ?> <form action="index_success.php" method="post" id="sendEmail" class="email"> <h3 class="register2">Newsletter Signup:</h3> <ul class="forms email"> <li class="email"><label for="emailFrom">Email: </label> <input type="text" name="emailFrom" class="info" id="emailFrom" value="<?= $_POST['emailFrom']; ?>" /> <?php if(isset($emailFromError)) echo '<span class="error">'.$emailFromError.'</span>'; ?> </li> <li class="buttons email"> <button type="submit" id="submit">Send</button> <input type="hidden" name="submitted" id="submitted" value="true" /> </li> </ul> </form> <div class="clearing"> </div> </div> css: p.emailbox{ text-align:center; margin:0; } p.emailbox:first-letter { font-size: 120%; font-weight: bold; } .outeremailcontainer { height:60px; width: 275px; background-image:url(/images/feather_email2.jpg); /*background-color:#fff;*/ text-align:center; /* margin:-50px 281px 0 auto ; */ float:right; position:relative; z-index:1; } form.email{ position:relative; } #emailcontainer { margin:0; padding: 0 auto; z-index:1000; display:block; position:relative; } Thanks for any help! Joel

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  • iPodMusicPlayer doesn't send notifications, if it is created in background

    - by Aleksejs
    If iPodMusicPlayer is created in background, then I doesn't send notifications about playback state changes. Here is code: - (void)initMusicPlayer { musicPlayer = [MPMusicPlayerController iPodMusicPlayer]; NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter]; [notificationCenter addObserver:self selector:@selector(musicPlayerStateChanged:) name:MPMusicPlayerControllerNowPlayingItemDidChangeNotification object:musicPlayer]; [notificationCenter addObserver:self selector:@selector(musicPlayerStateChanged:) name:MPMusicPlayerControllerPlaybackStateDidChangeNotification object:musicPlayer]; [musicPlayer beginGeneratingPlaybackNotifications]; } - (void)viewDidLoad { [self performSelectorInBackground:@selector(initMusicPlayer) withObject:nil]; } Is there some way how to create iPodMusicPlayer in background? Otherwise if it is created on the main thread, it blocks executions for a while.

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  • Does deleting 'M'odified line in SVN Commit have an effect

    - by cdated
    When running the commandsvn ci you get a text editor that allows you to place a comment, below that is there is the text "--This line, and those below, will be ignored--", then the files modified, added, or deleted. If I were to delete a line such as: M folderA/fileA Would it remove that file from the check in, or is that just an SVN comment that has no other effect?

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  • How can I get model names from inside my app?

    - by Cameron
    I have a bunch of models in a sub-directory that inherit from a model in the models root directory. I want to be able to set a class variable in another model that lists each inherited model class. i.e @@groups = sub_models.map do { |model| model.class.to_s } Not sure how to get at this info though...

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  • Am I compiling with x64 JDK?

    - by Mike
    Hi, Do I have the 64 bit of JDK installed on my machine? My java -version says: C:\Documents and Settings\Administratorjava -version java version "1.6.0_20" Java(TM) SE Runtime Environment (build 1.6.0_20-b02) Java HotSpot(TM) 64-Bit Server VM (build 16.3-b01, mixed mode) Should I expect a performance improvement in using a 64 bit compiler versus a 32 bit one? Thanks, Mike

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  • reading a file word by word

    - by nalbina
    I can read from a file 1 character at a time, but how do i make it go just one word at a time? So, read until there is a space and take that as a string. This gets me the characters: while (!fin.eof()){ while (fin f ){ F.push_back ( f ); }

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  • Why the valid looking statement gives error in MATLAB?

    - by user198729
    It's from this question? Why the two solutions doesn't work, though it looks very valid for me: >> t = -pi:0.1:pi; >> r = ((sin(t)*sqrt(cos(t)))*(sin(t) + (7/5))^(-1)) - 2*sin(t) + 2 ; ??? Error using ==> mtimes Inner matrix dimensions must agree. >> t = -pi:0.1:pi; >> r = ((sin(t).*sqrt(cos(t))).*(sin(t) + (7/5)).^(-1)) - 2*sin(t) + 2 ; >> plot(r,t) ??? Error using ==> plot Vectors must be the same lengths. What's wrong with the above?

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  • Apache setting mod_auth_ldap require settings per sub-directory

    - by Anthony
    I would like to set up a primary directory that has one set of LDAP-based restrictions and then have various sub-directories use other restrictions, but only have the actual LDAP search done in the base directory. For example: .htaccess per directory /Primary_Directory AuthLDAPURL "ldap://ldap1.airius.com:389/ou=People, o=Airius?uid?sub?(objectClass=*)" Require group cn=admins ../Open2All Require valid-user ../No_Admins_Allowed Require group cn!=admins So basically, the primary directory (in this example) can only be accessed by users who are in the admins group, while the first sub-directory can be accessed by anyone in the directory, and the second sub-folder can be reached by anyone who is NOT in the admin-group. But I only want to set the Require line for the sub-directories, and not re-setup the LDAP query on each sub-directory. Is this possible, even though there are clear permissions conflicts from level to level? Does the deepest .htaccess file know that the Require line refers to the LDAP search in the parent folder?

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  • Problem creating a mosaic of images using JAI

    - by IanW
    Hello I'm trying to use JAI to create a single mosaic consisting of 4 TIF images each of which is 5000 x 5000. The code I have written is as follows .. RenderedOp mosaic=null; ParameterBlock pbMosaic=new ParameterBlock(); pbMosaic.add(MosaicDescriptor.MOSAIC_TYPE_OVERLAY); RenderedOp in=null; // Get 4 tiles and add them to the Mosaic in=returnRenderedOp(path,"northwest.tif"); pbMosaic.addSource(in); in=returnRenderedOp(path,"northeast.tif"); pbMosaic.addSource(in); in=returnRenderedOp(path,"southwest.tif"); pbMosaic.addSource(in); in=returnRenderedOp(path,"southeast.tif"); pbMosaic.addSource(in); // Setup the ImageLayout ImageLayout imageLayout=new ImageLayout(0,0,10000,10000); imageLayout.setTileWidth(5000); imageLayout.setTileHeight(5000); imageLayout.setColorModel(in.getColorModel()); imageLayout.setSampleModel(in.getSampleModel()); mosaic=JAI.create("mosaic",pbMosaic,new RenderingHints(JAI.KEY_IMAGE_LAYOUT,imageLayout)); The problem is that all 4 images are being positioned in the same place in the top left hand corner of the mosaic so the other three quarters of it is empty. Can anyone tell me how I can choose the position of each picture that makes up the mosaic so each appears in the correct place ? Thanks Ian

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  • Upcoming Script# Release and LIDNUG presentation

    A quick heads up on a Script# presentation for the Linked.NET user group on LinkedIn, and some words (ummm... teasers) on the upcoming script# release...[Full post continued here...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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