Search Results

Search found 44734 results on 1790 pages for 'model based design'.

Page 312/1790 | < Previous Page | 308 309 310 311 312 313 314 315 316 317 318 319  | Next Page >

• Hibernate Communications Link Failure in Restlet-Hibernate Based Java application powered by MySQL

  - by Vatsala

  Let me describe my question - I have a Java application - Hibernate as the DB interfacing layer over MySQL. I get the communications link failure error in my application. The occurence of this error is a very specific case. I get this error , When I leave mysql server unattended for more than approximately 6 hours (i.e. when there are no queries issued to MySQL for more than approximately 6 hours). I am pasting a top 'exception' level description below, and adding a pastebin link for a detailed stacktrace description. javax.persistence.PersistenceException: org.hibernate.exception.JDBCConnectionException: Cannot open connection - Caused by: org.hibernate.exception.JDBCConnectionException: Cannot open connection - Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - The last packet successfully received from the server was 1,274,868,181,212 milliseconds ago. The last packet sent successfully to the server was 0 milliseconds ago. - Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - The last packet successfully received from the server was 1,274,868,181,212 milliseconds ago. The last packet sent successfully to the server was 0 milliseconds ago. - Caused by: java.net.ConnectException: Connection refused: connect the link to the pastebin for further investigation - http://pastebin.com/4KujAmgD What I understand from these exception statements is that MySQL is refusing to take in any connections after a period of idle/nil activity. I have been reading up a bit about this via google search, and came to know that one of the possible ways to overcome this is to set values for c3p0 properties as c3p0 comes bundled with Hibernate. Specifically, I read from here http://www.mchange.com/projects/c3p0/index.html that setting two properties idleConnectionTestPeriod and preferredTestQuery will solve this for me. But these values dont seem to have had an effect. Is this the correct approach to fixing this? If not, what is the right way to get over this? The following are related Communications Link Failure questions at stackoverflow.com, but I've not found a satisfactory answer in their answers. http://stackoverflow.com/questions/2121829/java-db-communications-link-failure http://stackoverflow.com/questions/298988/how-to-handle-communication-link-failure Note 1 - i dont get this error when I am using my application continuosly. Note 2 - I use JPA with Hibernate and hence my hibernate.dialect,etc hibernate properties reside within the persistence.xml in the META-INF folder (does that prevent the c3p0 properties from working?)

  Read the article

• Wizard based feature install in sharepoint 2007?

  - by JL

  I have a feature that gets installed using a WSP package, when the feature is activated, I would like the following to happen: The feature will contain a list definition. When the feature gets activated by an end user (the user physically clicks the feature activation button in site features admin) - I would like a modal dialog to appear then ask the user to provide some additional details. 3.1 The additional details will be supplying a certain number of names. For example Mary, John, Peter. Form logistics I can handle. Once the form is complete that information needs to somehow get back to the feature reciever, so that I can then take the base list definition, and use it as a template to create list instances for all the names supplied - so if user had supplied Mary and Peter, then 2 list instances will be created when this feature is activated. Is any of this possible with MOSS 2007? Thank you

  Read the article

• Python: Taking an array and break it into subarrays based on some criteria

  - by randombits

  I have an array of files. I'd like to be able to break that array down into one array with multiple subarrays, each subarray contains files that were created on the same day. So right now if the array contains files from March 1 - March 31, I'd like to have an array with 31 subarrays (assuming there is at least 1 file for each day). In the long run, I'm trying to find the file from each day with the latest creation/modification time. If there is a way to bundle that into the iterations that are required above to save some CPU cycles, that would be even more ideal. Then I'd have one flat array with 31 files, one for each day, for the latest file created on each individual day.

  Read the article

• changing src reference based upon https

  - by spody

  I'm adding a facebook comment widget to a website. I'm placing this widget in a file that is included on everypage. The navigation is relatively linked so it switches back and forth from http and https. But for some reason the comment widget only shows up if both the src linked file and webpage is secure or both the src linked file and webpage is NOT secure. The widget does not display of the src file is secure and the webpage is not secure. So... I've tried this but doesn't work. if (window.location.protocol == 'https:') script.setAttribute('src', 'https://ssl.connect.facebook.com/js/api_lib/v0.4/FeatureLoader.js.php'); } else { script.setAttribute('src', 'http://static.ak.connect.facebook.com/connect.php/en_US') }

  Read the article

• Are there any Design Guidelines for Documental Databases?

  - by Hugo

  Just wondering if there are any kind of guidelines for when you are designing a document-oriented db and I am talking especially about CouchDb. I know that being schemaless things can take the shape that we want but, are there any best practices? Thanks in advance! =D

  Read the article

• add several variables to dataframe, based on vector

  - by Andreas

  I am sure this is easy - but I can't figure it out right now. Basically: I have a long vector of variables: names <- c("first","second", "third") I have some data, and I now need to add the variables. I could do: data$first <- NA But since I have a long list, and I would like an automated solution. This doesn't work. for (i in 1:length(names)) (paste("data$", names[i],sep="") <- NA) The reason I want this, is that I need to vertically merge to dataframes, where one doesn't have all the variables it should have. Thanks in advance

  Read the article

• JavaScript-library-based Project Organization

  - by Laith J

  Hello, I'm very new to the JavaScript library world. I have used JS by itself before to create a mini social network but this is the first time I use a JS library and I really don't know how to go about this. I'm planning to use Google Closure and I'm really not sure how I should go about organizing the code. Should I put everything in one file since it's a web app and should have one screen? Should I separate the code to many chunks and put them in different files? Or should I put different dialogs (like settings) in a separate page and thus a separate file? Like all programmers I'm a perfectionist so please help me out with this one, thanks.

  Read the article

• How to get cell text based on indexPath?

  - by Sheehan Alam

  I have a UITabBarController with more than 5 UITabBarItems so the moreNavigationController is available. In my UITabBarController Delegate I do the following: - (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController { //do some stuff //... UITableView *moreView = (UITableView *)self.tabBarController.moreNavigationController.topViewController.view; moreView.delegate = self; } I want to implement a UITableViewDelegate so I can capture the row that was selected, set a custom view property and then push the view controller: - (void)tableView:(UITableView *)tblView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { //how can I get the text of the cell here? } I need to get the text of a cell when the user taps on a row. How can I accomplish this?

  Read the article

• Mysql - Grouping the result based on a mathematical operation and SUM() function

  - by SpikETidE

  Hi all... I'm having the following two tables... Table : room_type type_id type_name no_of_rooms max_guests rate 1 Type 1 15 2 1254 2 Type 2 10 1 3025 Table : reservation reservation_id start_date end_date room_type booked_rooms 1 2010-04-12 2010-04-15 1 8 2 2010-04-12 2010-04-15 1 2 Now... I have this query SELECT type_id, type_name FROM room_type WHERE id NOT IN (SELECT room_type FROM reservation WHERE start_date >= '$start_date' AND end_date <= '$end_date') What the query does is it selects the rooms that are not booked between the start date and end date. Also, as you can see from the reservation table, we also have 'number of rooms booked between the two dates' factor also... I need to add this 'no.of booked rooms between the two dates' factor also in to the query... The query should return the type of rooms for which at least one room is free between the two dates. I worked out the logic but just can't represent it as a query....! How will you do this...? Thanks for your suggestions..!

  Read the article

• Trying to create an image list based on what is defined as the order, and loosing

  - by user1691463

  I have a custom created module for Joomla 2.5 and within the params of the module, and have a loop that is not outputting as expected. I have the following parameters (fields) int he module: Order Thumb image Image Title Full-size image Now there are 10 sets of these group of 4 params. What I am trying to do is loop through each of the object sets, 10 of them, and on each iteration, build an HTML image list structure. The if statement is building the HTML structure for the sets that have an order value that is greater than 0, and the else is creating the html for those sets that do not have a value greater that 0. The goal is to create two variables and then concatenate the the strings together; the leading set are the sets that have an order defined. This is not happening and every thrid loop seems like it is missing. Here is the order as it is set in the 10 sets Set 1 = 0 Set 2 = 4 Set 3 = 1 Set 4 = 0 Set 5 = 5 Set 6 = 0 Set 7 = 0 Set 8 = 6 Set 9 = 3 Set 10 = 9 However, the outcomes is: 9 5 1 4 6 7 10 Instead of the expected: 3 9 2 5 8 1 (below here are those sets that were not greater than 0 in order of appearance) 4 6 7 whats wrong here that I can not see <?php for ($i = 1; $i <= 10; $i++) { $order = $params->get('order'.$i);#get order for main loop of 10 $active = ""; if ($order > 0) {#Check if greater than 0 for ($n = 1; $n <= 10; $n++) {#loop through all order fields looking and build html lowest to highest; $ordercheck =$params->get('order'.$n); if ($ordercheck == $i) { $img = $params->get('image'.$n); $fimage = $params->get('image'.$n.'fullimage'); $title = $params->get('image'.$n.'alttext'); $active = ""; $active = $active . '<li>'; $active = $active . '<a href="'.$fimage.'" rel="prettyPhoto[gallery1]" title="'.$title.'">'; $active = $active . '<img src="'.$img.'" alt="'.$title.'" />'; $active = $active . '</a>'; $active = $active . '</li>'; $leading = $leading . $active; } } } else { #if the itteration $order was not greater than 0, build in order of accourance $img = $params->get('image'.$i); $fimage = $params->get('image'.$i.'fullimage'); $title = $params->get('image'.$i.'alttext'); $active = $active . '<li>'; $active = $active . '<a href="'.$fimage.'" rel="prettyPhoto[gallery1]" title="'.$title.'">'; $active = $active . '<img src="'.$img.'" alt="'.$title.'" />'; $active = $active . '</a></li>'; $unordered = $unordered . $active; } $imagesList = $leading . $unordered; } ?>

  Read the article

• How to calculate commision based on referred memebrs?

  - by RAJKISHOR SAHU

  Hello everybody, I am developing a small software in C# WPF for a consultancy which does chain system business. I have coded tree structure to show who referred whom. Now it has commission depending on level. If 1 referred 2 & 3 then 1 will get level-1 commission. If 2 referred 4, 5 & 3 referred 6, 7 then 1 will receive level-2 commission. This chain will go on to certain total number. My problem is how I would implement this logic; I am able to calculate who has referred how many members via UDF written for adding TreeViewItem to TreeView. Or tell me how I can count items in treeview in certain level? Node adding UDF: public void AddNodes(int uid, TreeViewItem tSubNode) { string query = "select fullname, id from members where refCode=" + uid + ";"; MySqlCommand cmd = new MySqlCommand(query, db.conn); MySqlDataAdapter _DA = new MySqlDataAdapter(cmd); DataTable _DT = new DataTable(); tSubNode.IsExpanded = true; _DA.Fill(_DT); foreach (DataRow _dr in _DT.Rows) { TreeViewItem tNode = new TreeViewItem(); tNode.Header = _dr["fullname"].ToString()+" ("+_dr["id"].ToString()+")"; tSubNode.Items.Add(tNode); if (db.HasMembers(Convert.ToInt32(_dr["id"].ToString()))) { AddNodes(Convert.ToInt32(_dr["id"]), tNode); } } //This line tracks who has referred how many members Console.WriteLine("Tree node Count : "+tSubNode.Items.Count.ToString()+", UID "+uid); } Help me PLEASE!!!!

  Read the article

• How to use PHP-based authentication from non-PHP based AJAX app?

  - by DavidR

  I've been asked to create a stand-alone webapp using "straight" HTML and Javascript that does user authentication against an existing PHP app (backend is MySQL). Unfortunately, I really don't have a firm grasp on how PHP authentication works, and I'd rather not invest a lot of time in learning PHP just for this particular case. I can see two possibilites so far 1) create a PHP wrapper around my new app and use native PHP authentication (don't like this) 2) create a simple REST-ful webservice around the PHP authentication (don't know how to do this) Anything else I should consider? Help is much appreciated!

  Read the article

• display all available named scopes of a model in Ruby on Rails

  - by jaycode

  Especially when you are using Searchlogic. It is kinda hard for me to guess what named scope to use to achieve what I need.

  Read the article

• need a project design tool

  - by santosh

  I am looking for simple and easy to use tools through which I can get project's visual picture of folder/file tree stucture , its classes, functions and objects, relations between classes and files.

  Read the article

• MSBuild CreateItem condition include based on config file

  - by Mac

  I'm trying to select a list of test dlls that contain corresponding config files MyTest.Tests.dll MyTest.Tests.config I have to use a createItem as the dlls are not available at the time of the script loading <CreateItem Include="$(AssemblyFolder)\*.Tests.dll" Condition="???" <Output TaskParameter="Include" ItemName="TestBinariesWithConfig"/> </CreateItem> Is there a condition I can use or is this the wrong approach? Thanks Mac

  Read the article

• Define keyref selector based on element type in XPath

  - by Robert Sirre

  Let's say I have an XML file that will look like this: <a> <b d="value1"/> <c d="value2"/> </a> In the XSD file that defines the structure of this XML file I defined the elements by name 'b' and 'c' to be of the same type (and the type requires attribute 'd'). Let's say that I want to make a keyReference of all elements of the type that both 'b' and 'c' are, is there any way in XPath to do this? At the definition of the type of 'a' I would expect something like this: <xs:keyref name="myReferenceName" refer="keyToReferTo"> <xs:selector xpath="[@type='typenameof elements b and c?']"/> <xs:field xpath="@d"/> </xs:keyref> Is something like this possible, or is XPath, even in the XSD, schema-unaware?

  Read the article

• DllImport Based on OS Platform

  - by Ngu Soon Hui

  I have a mixture of unmanaged code ( backend) and managed code ( front end), as such, I would need to call the unmanaged code from my managed code, using interop techniques and DllImport attribute. Now, I've compiled two versions of unmanaged code, for both 32 and 64 bit OS; they are named service32.dll and service64.dll respectively. So, in my .Net code, I would have to do a DllImport for both dlls: [DllImport(@"service32.dll")] //for 32 bit OS invocation public static void SimpleFunction(); [DllImport(@"service64.dll")] //for 64 bit OS invocation public static void SimpleFunction(); And call them depending on which platform my application is running on. The issue now is that for every unmanaged function, I have to declared it twice, one for 32 bit OS and one for 64 bit OS. This is a duplication of work, and everytime I change the signature of an unmanaged function, I have to modified it in two places. Is there anyway that I can change the argument in DllImport so that the correct dll will be invoked automagically, depending on the platform?

  Read the article

• JSON parsing (soap based)

  - by hardik

  i have my soap message request i want to parse the data using JSON parser on server side there is php scripting framework how i would do that ?

  Read the article

• Rails Updating Nested Model Collection Select

  - by Timothy

  I have a contrived nested Rails form like the following <% form_for @a do |fa| %> <% fa.fields_for :b do |fb| %> <% fb.fields_for :c do |fc| %> <%= fc.label :option_id %> <%= fc.collection_select :option_id, ModelD.all(:select => "id, name"), :id, :name %> <% end %> <% end %> <% end %> and then somewhere else on the same page I have a remote form <% remote_form_for :modeld, ModelD.new, :url => new_modeld_path, :html => {:method => 'post'} do |f| %> <%= f.label :name %> <%= f.textarea :name %> <%= f.submit "Create" %> <% end %> Is there any way I could update all the collection selects in the first form using Ajax when I submit the second form? There are an arbitrary number of collection selects.

  Read the article

• SQL Server 2008 update one column with a value based on number words in other

  - by MicMit

  Columns Words, WordsCount For each value of Words "x y z" update wordscount with 3 , "a b" with 2, "a b c d" with 4 and etc... How can I do it with/without .Net program ?

  Read the article

• Android lifecycle of thread-based game

  - by ehehhh

  I ran into a bit of trouble while trying to get my game to work correctly after being put to the background by the user or a phone call for example. My app has a SurfaceView class called GameView, which has the onDraw() method to do all the necessary drawing for my game and two threads - one for calling the onDraw() and one for doing the necessary calculations for the game's logic. I succesfully implemented onPause() and onResume(). (I paused both threads when back button was pressed and resumed them after user cancelled in the AlertDialog.) Now I would like to have the game paused the same way when onStop() gets called. I put both threads on pause and saved my characters location in the savedInstanceState, but when I start my app again, no method gets called (I checked with Logcat). I believe onRestart() should be called first, then onStart() and then onResume(), but none of that happens. What am I doing wrong? (Didn't include any code, because it seems to be a problem of me not understanding the lifecycle, not a problem in code. If it seems necessary, I'll post the parts you request.)

  Read the article

• How to make DropDownList automatically be selected based on the Label.Text

  - by Archana B.R

  I have a DropDownlist in the GridView, which should be visible only when edit is clicked. I have bound the DropDownList from code behind. When I click on Edit, the label value of that cell should automatically get selected in the DropDownList. The code I have tried is: protected void GridView3_RowDataBound(object sender, GridViewRowEventArgs e) { if (e.Row.RowType == DataControlRowType.DataRow) { SqlCommand cmd = new SqlCommand("SELECT Location_Name FROM Location_Table"); DropDownList bind_drop = (e.Row.FindControl("DropList") as DropDownList); bind_drop.DataSource = this.ExecuteQuery(cmd, "SELECT"); bind_drop.DataTextField = "Location_Name"; bind_drop.DataValueField = "Location_Name"; bind_drop.DataBind(); string Loc_type = (e.Row.FindControl("id2") as Label).Text.Trim(); bind_drop.Items.FindByValue(Loc_type).Selected = true; } } When I run the code, it gives an exception error Object reference not set in the last line of the above code. Cannot find out whats wrong. Kindly help

  Read the article

• Rails: Routing to a different controller based on request format

  - by Jimmy Cuadra

  I'm writing an app where I want all requests for HTML to be handled by the same controller action. I have some other routes that are JSON-specific. Here's what my routes look like: Blog::Application.routes.draw do constraints format: :json do resources :posts end match "(*path)" => "web#index" end The problem is that constraints is being interpreted as "this route only works with the specified format" rather than "skip this route and try the next one if the request is not in the specified format." In other words, navigating to /posts in the browser gives me a 406 Not Acceptable because the URL is constrained to the JSON format. Instead, I want it to fall through to web#index if the request is for HTML, and hit the resourceful route if the request is for JSON. How can this be achieved? (Using Rails 3.2.9.)

  Read the article

• Terminal-based snake game: input thread manipulates output

  - by enlightened

  I'm writing a snake game for the terminal, i.e. output via print. The following works just fine: while status[snake_monad] do print to_string draw canvas, compose_all([ frame, specs, snake_to_hash(snake[snake_monad]) ]) turn! snake_monad, get_dir move! snake_monad, specs sleep 0.25 end But I don't want the turn!ing to block, of course. So I put it into a new Thread and let it loop: Thread.new do loop do turn! snake_monad, get_dir end end while status[snake_monad] do ... # no turn! here ... end Which also works logically (the snake is turning), but the output is somehow interspersed with newlines. As soon as I kill the input thread (^C) it looks normal again. So why and how does the thread have any effect on my output? And how do I work around this issue? (I don't know much about threads, even less about them in ruby. Input and output concurrently on the same terminal make the matter worse, I guess...) Also (not really important): Wanting my program as pure as possible, would it be somewhat easily possible to get the input non-blockingly while passing everything around? Thank you!

  Read the article

• Limit checkboxes with jquery based on checked radio buttons

  - by Hiskie

  So, i have this problem with some checkboxes. First of all let me tell you about the "project" itself. It's a webform, the user must complete it and check some checkboxes and radio buttons depending on what he would like to purchase. First of them are 2 radio bullets, numbered 1 and 2, and represent the quantity of the product he wants to purchase. Next to those are about 5 checkboxes that represent the color of the product, it doesn't matter how many of them are, the thing is ... i want, when a user selects 1 at the radio buttons, only 1 checkbox to be active, if he selects 2 then only 2 checkboxes to be available to check. So.. could someone help me? I thought of jQuery but i don't know... There are two divs, the first div with the id of let's say #radioButtons has 2 radio buttons, and the second div has the rest of the checkboxes.

  Read the article

< Previous Page | 308 309 310 311 312 313 314 315 316 317 318 319  | Next Page >