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• J2EE/EJB + service locator: is it safe to cache EJB Home lookup result ?

  - by Guillaume

  In a J2EE application, we are using EJB2 in weblogic. To avoid losing time building the initial context and looking up EJB Home interface, I'm considering the Service Locator Pattern. But after a few search on the web I found that event if this pattern is often recommended for the InitialContext caching, there are some negative opinion about the EJB Home caching. Questions: Is it safe to cache EJB Home lookup result ? What will happen if one my cluster node is no more working ? What will happen if I install a new version of the EJB without refreshing the service locator's cache ?

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• jquery: Toggle elements based on result from a function

  - by Svish

  I have a number of table rows that I would like to toggle the visibility of. They should be visible if a data item I have set on them earlier equals a selected value in a form. This is what I have so far: $('#category-selector').change(function(event) { var category_id = $(this).val(); if(!category_id) { $('tr', '#table tbody').show(); } else { $('tr', '#table tbody').toggle(); } }); Of course this just toggles them on and off. Thing is that I thought I was able to give toggle a function that would decide if each row should be on or off, but it turns out I can only give it a boolean condition which would be an all or nothing deal kind of... So, I have this function: function() { return $(this).data('category_id') == category_id; } How can I use that to go through all the rows and toggle them on or off? Or is there a better approach to this? What should I do?

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• Refresh combo box in Windows Form VB.NET

  - by fireBand

  Following is the code to populate combobox using DataSource Dim CountryList As Array = MyCtrl.GetAllCountries With cbCountyList .DataSource = CountryList .DisplayMember = "CountryName" .ValueMember = "CountryID" End With After adding a new COuntry Name to Database I want to reflect the changes in combobox. Repeating this code is not an option becasue it triggers SelectIndexChange event and had to do some crappy work around to avoid that. So I was wondering if there is way to refresh the combobox list. I actually thought binding with the DataSource property supposed to do it automatically. I also tried cbCountyList.Refresh() Thanks in advance.

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• Printing contents of a dynamically created iframe from parent window

  - by certainlyakey

  I have a page with a list of links and a div which serves as a placeholder for the pages the links lead to. Everytime user clicks on a link an iframe is created in the div and its src attribute gets the value of the link href attribute - simple and clear, sort of external web pages gallery. What i do have a problem with is printing the contents of the iframe. To do this i use this code: function PrintIframe() { frames["name"].focus(); frames["name"].print(); } The issue seems to be that iframe is created dynamically by JQuery - when I insert an iframe right into the html code, the browser prints the external page all right. But with the same code injected by JavaScript nothing happens. I tried to use JQ 1.3 'live' event on "Print" link, no success. Is there a way to overcome this?

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• Alternative to 'publish' in visual studio

  - by acidzombie24

  I am working on an app with configurable files. When i publish i notice 1) I get an installer which i dont think i can opt out of 2) I dont know where the install path is and if i change the config files the application will not install (maybe not run either if i edit them in the right place?) So what alternatives do i have? I would like some event i can run which builds in release mode then copies the release.exe and any config/media file and move it to path/deploy/prj/ so i can zip it or share it instead of a path in my sensitive path/src area (bonus is i can share deploy if i want all projects to be available (and no source)) Using visual studio 2010 -edit- also i need some data in src/relatedprj/bin/*, to be copied into the root

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• Can an application on the user's computer be started from a Firefox Extension?

  - by Saurabh Agarwal

  For example, can I start an instance of "Calculator.exe" on the user's computer (if it is available of course) upon some particular event in firefox, say clicking of a button? I thought of perhaps linking the extension to Python's subprocess method using XPCOM. But I was wondering whether there is an easier way. Additional information: I do not, at this point need to interact with the application upon its instantiation. Therefore I am looking for a way to open an application that's all. (Though, out of interest, if you have any pointers to interact with the same as well, that would be great) Thanks!

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• Switching function states

  - by webzide

  Dear experts, I would like to implement a API of Javascript that sort of resemble a light switch. For instance, there are two buttons on the actual HTML page act as the UI. Both of the buttons have event handlers that invokes a different function. Each function have codes that act like a state, for instance. button1.onclick=function (){ $("div").click( //code effects 2 ) } button2.onclick=function (){ $("div").click( //Code effects 2 ) } I the code works fine on the surface but the 2 state functions overlap. the effects is going to take place for the rest of the way until the next reload of the document. Basically what I want to achieve is that when 1 button is clicked, it will switch "OFF" the state of function invoked by the other button and vice versa. Thus, the effects achieved are unique are not overlapped. Is there anyway to achieve this or could any experts point me to the right direction. Thanks in advance.

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• Swing invokeLater never shows up, invokeAndWait throws error. What can I do?

  - by Geo

  I have this code: try { SwingUtilities.invokeAndWait(new Runnable() { public void run() { try { dialog.handleDownload(); } catch (IOException io) { io.printStackTrace(); } } }); } catch(Exception io) { io.printStackTrace(); } in the handleDownload I'm reading an inputstream, calculating a progress bar's value, and setting it to that. So, when I click a button, a new JFrame opens up and does all the stuff I wrote above. If I have the dialog.handleDownload by itself ( in no SwingUtilities method ), it freezes until the operation is finished. If I add it in a invokeLater it's closed very fast ( I can't see anything, and the operation is not finished ). If I add it in a invokeAndWait I get the invokeAndWait cannot be called from the event dispatcher thread error. What should I do?

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• Exception wrapping and HTML pages

  - by dotnetdev

  Hi, We have a sharepoint 2007 project at work. The exception handling policy is to log to the Sharepoint logs. In this case, would the best approach be to call that method and then rethrow the exception higher up? Except if I rethrow it to be caught higher up, there is no other exception handling code so what would happen in this case? Also, if you are going to display a more friendly error to the user (which uses information in the exception object), then this would be a good use of exception wrapping. Would it be a good idea to make a custom aspx page and add these to customerrors, so that on init (not sure of the exact event), I can display exception info in the passed parameter on the page. However, a static html page can't do this so I don't see the point in wrapping exceptions (unless there is a page or alert which uses the exception object). So if a project uses html pages for errors, is there a point in wrapping exceptions? Thanks

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• How can i access the value of the moving slider in a jquery variable

  - by user1673591

  html <h1>HTML Slider Test</h1> <div class="slider" data-max="10"></div> <p>Your slider has a value of <span class="slider-value"></span></p> <div class="slider" data-max="100"></div> <p>Your slider has a value of <span class="slider-value"></span></p> jquery $(".slider").each(function() { $(this).slider({ value : 1, min : 1, max : $(this).data('max'), step : 1, slide : function (event, ui) { var a= $(this).next().find('span.slider-value').html(ui.value); } }); }); I want the value of the moving slider in a jquery variable

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• Get text when enter is pressed in a text box in wxPython

  - by Sam

  I have a (single line) TextCtrl. The user types data into this. When they press enter, the contents of the box need to be extracted so they can be processed. I can't figure out how to catch enter being pressed. According to the docs, with the style wx.TE_PROCESS_ENTER set on my TextCtrl, it should generate a wx.EVT_COMMAND_TEXT_ENTER event when enter is pressed in the box, which I could then catch. However, wx.EVT_COMMAND_TEXT_ENTER seems not to exist (I get "module has no attribute EVT_COMMAND_TEXT_ENTER), so I'm a bit stuck. Googling just gets a couple of hits of people complaining wx.EVT_COMMAND_TEXT_ENTER doesn't work, so I guess I need another way of doing it.

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• How can I implement lazy loading on a page with 500+ images?

  - by Fedor

  I basically have a booking engine unit results page which must show 40 units and per each unit there's 1 large image of the first thumbnail and an X number of accompanying thumbnail images. I've been using the jquery lazy load plugin, but it's not thorough enough ( I'm invoking it on DOM Ready ), plus it doesn't really work in IE ( 50% of the clients use IE so it's a big issue ). What I think I really need to do is not really spit out the image but a fake element such as a span, and possibly modify my code such that if the user views the span, render it into an image element. <span src="/images/foo.gif"> The booking engine relies on JS so I think I might be forced to just rely on ajaxifying all the thumbnails and have event handlers on window scroll, etc in order for the page to be "usable" and load at an average time ( 2-3 seconds instead of 5-30s on high speed DSL/Cable ). I'd appreciate any examples or ideas.

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• Lining up the text in a tool tip, with the text in a combobox

  - by Steve P

  I see a lot of programs where if the text doesn't fit inside the bounds of the control, you can put your mouse over the control and the tooltip text will show you the full unclipped text, and also the tooltip text lines up completly with the text in the control. I'm trying to do that with a combobox in VB 2005 (.net version 2.0). In the tooltip draw event I've tried setting the tooltip location to the location of the AssociatedControl.DisplayRectangle, and the AssociatedControl.ClientRectangle. Each of these seem to put the tooltip text in the top left corner of the combobox, just slightly offset from the text in the combobox. Is there some type of padding I need to account for? or what's going on here?

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• fullcalendar, how to limit the number of events per day in the month view

  - by VNE_Hess

  I have many events on a day, and it works as expected but now looking at the month view, my calendar grid is much taller that expected. I'd like to hide some of these events from the month view, like a summary with a visual que that there are more on this day than can be shown. I can use eventRender and return false, but i would like to know how many events are on a given day, so i can limit the rendering to about 4, then perhaps i would add an event that says " more ... " So the question may be : how to count the events on a given date ? or is this more like a feature request to expose a max counter for month view ? thanks

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• Don't show Data in DataGrid

  - by mSafdel

  Hi in my app, I used WCF Services for load data from SQL DB then in Completed Event Handler of my ServiceClient write this code: void svc_GetOrdersCompleted(object sender, GetOrdersCompletedEventArgs e) { if (e.Error == null) { dgOrders.ItemsSource = e.Result; txtStatus.Text = ""; } else txtStatus.Text = "Error occured while loading orders from database"; } dgOrders is my DataGrid and And AutoGenerateColumns set to True. in line 5: eResult have a number of Order objects but after this code DataGrid can't show data. Why? this ia my xaml for dgOrders: <data:DataGrid x:Name="dgOrders" Grid.Row="0" Grid.Column="1" AutoGenerateColumns="True" SelectionChanged="dgOrders_SelectionChanged" Foreground="Green"> </data:DataGrid> this is my Source code please guide me.

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• Backbone.js: How to utilize router.navigate to manipulate browser history?

  - by Xavier_Ex

  I am writing something like a registration process containing several steps, and I want to make it a single-page like system so after some studying Backbone.js is my choice. Every time the user completes the current step they will click on a NEXT button I create and I use the router.navigate method to update the url, as well as loading the content of the next page and doing some fancy transition with javascript. Result is, URL is updated which the page is not refreshed, giving a smooth user experience. However, when the user clicks on the back button of the browser, the URL gets updated to that of a previous step, but the content stays the same. My question is through what way I can capture such an event and currently load the content of the previous step and present that to the user? Or even better, can I rely on browser cache to load that previously loaded page? EDIT: in particular, I'm trying something like mentioned in this article.

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• what is a TOPIC in Struts2

  - by nacho4d

  HI, I am learning struts 2 with Tiles 2 and the word "topic" shows up very frequently... What is a topic? for example: The sx:a tag (specifically the ajax a template) and the div tag support an ajax event system, providing the ability to broadcast events to topics. You can specify the topics to listen to using a comma separated list in the listenTopics attribute. What this means is that when a topic is published, usually through the ajax a template, the URL specified in the href attribute will be re-requested. Placeholder... Refresh

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• Is there a JS/JQuery way to find out if embedded objects are loaded?

  - by Beska

  I've got a web page that I'm embedding a pdf into. Conceptually very simple: <html> <body> blah1 <object type="application/pdf" data="a.pdf" width="500" height="650" ></object> blah2 </body> </html> What I would like to do is fire a JavaScript event when the pdf finishes loading. Is there a way to make this happen? I know only a little about JQuery, but it looks like .ready() won't fit my needs, since it is designed to fire when the html document is ready, not when all of its components are fully loaded. Thoughts?

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• WCF: How to find out when a session is ending?

  - by TomTom

  I have a WCF application that is using sessions. Is there any central event to get thrown when a session ends? How can I find out when a session is ending WITHOUT (!) calling a method (network disconnect, client crashing - so no "logout" method call)? The server is hosted as: [ServiceBehavior( InstanceContextMode = InstanceContextMode.PerSession, ConcurrencyMode = ConcurrencyMode.Reentrant, UseSynchronizationContext = false, IncludeExceptionDetailInFaults = true )] Basically because it is using a callback interface. Now, I basically need to decoubple the instance created from the backend store when the session terminates ;) Any ideas?

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• Prototype problem with replace

  - by xain

  Hi, in my html page, I have the following: <div id="rub"> Select at least one Rub </div> In the script code, I have if ( some condition ... ) $('rub').replace("Rubs selected:"); Which works fine, but when a second event is triggered, in the code I have if ( some other condition ... ) $('rub').replace("Selected at least one item:"); That gives the error $("rub") is null It's as if the rub reference was lost after the first replace. (Also tried with Element.replace with the same result) Any clues ? Thanks in advance.

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• jquery draggable accept: classpath

  - by heldopslippers

  Hi guys.. I have problems with the following bit of javascript/jquery code: this.droppable = function(){ $('.imageWindow .body .item').draggable(); $('.groupWindow .body .item').droppable({ accept: $(".imageWindow .body .item"), over: function(event, ui) { alert("this is valid!"); }, drop: function(){ alert('dropped'); } }); } As you maybe know it is not possible to pass the following in the accept option: $(".imageWindow .body .item") But what is possible ? I want to pass a "class path" as an accept option ! It is probably a simple answer but i can't figure it out. Of course i could do: accept: ".item" But because "groupWindow .body .item" is a sortable it would also accept himself! Thanxs if you can help me!

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• How to notify SIP client when there is an incoming call on another phone

  - by fmunkert

  Hi, is it possible to notify a SIP client when there is an incoming call on another phone? I know that there are the SUBSCRIBE and NOTIFY commands but I have found no event package for signaling incoming calls. Background: for a SIP-capable telephony system, I would like to provide an application that displays information about the caller (e.g. name, address, contracts, etc.) when the phone rings. The phones are external to the PC; they are not soft-phones. -Frank

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• Put specific tds from a table row into edit using jQuery (then update w/ ajax)

  - by bbqsauced

  I'm somewhat new to jQuery, so I could use some help here. This is my issue: I have a php script outputting a dynamic table. Each row has an "edit" button, plus some other fields. Only 3 of those need to be turned into an input box. The edit button should only put that specific row into "edit mode." I got as far as assigning each row a unique class by adding a number to the end of it. I have been able to use jQuery to change all of the rows into edit mode, but I need it to be specific to a row. An example row would have classes like name0, price0, and desc0. The next row would go on to classes name1, price1, and desc1 (for the fields that need changed). How can I reference these values and pass them to jQuery so it processes an event on just those elements?

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• Whats wrong with this my SELECt Query >?

  - by user559800

  Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click Dim SQLData As New System.Data.SqlClient.SqlConnection("Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True;User Instance=True") Dim cmdSelect As New System.Data.SqlClient.SqlCommand("SELECT COUNT(*) FROM Table1 WHERE Name =" + TextBox1.Text + " And Last = '" + TextBox2.Text + "'", SQLData) SQLData.Open() If cmdSelect.ExecuteScalar > 0 Then Label1.Text = "Record Found ! " & TextBox1.Text & " " & TextBox2.Text Return End If Label1.Text = "Record Not Found ! " SQLData.Close() End Sub I write this code to find whether the record entered in textbox1 and textbox2 exists or not ..if record exist ..then in label1 the text would be RECORD FOUND else NO RECORD FOUND ERROR : **when i enter in textbox1 and textbox2 then on button click event it shows the error : Invalid column name ,,**

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• Would this rollback/stop all records from inserting?

  - by chobo2

  Hi I been going through this tutorial http://www.codeproject.com/KB/linq/BulkOperations_LinqToSQL.aspx and them make a SP like this CREATE PROCEDURE [dbo].[spTEST_InsertXMLTEST_TEST](@UpdatedProdData nText) AS DECLARE @hDoc int exec sp_xml_preparedocument @hDoc OUTPUT,@UpdatedProdData INSERT INTO TBL_TEST_TEST(NAME) SELECT XMLProdTable.NAME FROM OPENXML(@hDoc, 'ArrayOfTBL_TEST_TEST/TBL_TEST_TEST', 2) WITH ( ID Int, NAME varchar(100) ) XMLProdTable EXEC sp_xml_removedocument @hDoc Now my requirements require me to mass insert and mass update one after another. So first I am wondering can I merge those into one SP? I am not sure how it works with this OPENXML but I would think it would just be making sure that the XPath is right. Next what happens while it would be running this combined SP and something goes wrong. Would it roll back all the records or just stop and the records that happened before this event that crashed it would be inserted?

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