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• How to detect Out Of Memory condition?

  - by Jaromir Hamala

  I have an application running on Websphere Application Server 6.0 and it crashes nearly every day because of Out-Of-Memory. From verbose GC is certain there are the memory leaks(many of them) Unfortunately the application is provided by external vendor and getting things fixed is slow & painful process. As part of the process I need to gather the logs and heapdumps each time the OOM occurs. Now I'm looking for some way how to automate it. Fundamental problem is how to detect OOM condition. One way would be to create shell script which will periodically search for new heapdumps. This approach seems me a kinda dirty. Another approach might be to leverage the JMX somehow. But I have little or no experience in this area and don't have much idea how to do it. Or is in WAS some kind of trigger/hooks for this? Thank you very much for every advice!

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• Date Input in safari

  - by Fresheyeball

  So I am using the HTML5 date input type, primary to trigger the 'wheels' in iOS. Everything is working fine in ie7-9 Chrome and FF. But Safari for OSX is very upset. It sees the need to add little 'up and down' buttons to the right hand side and generally mess up my visual stylings. My attempt to fix this, is to change the date inputs back to text inputs for desktop browsers, and leave it as date inputs for mobile: unless device.is # 'device' is a lib I use to detect mobile browsers dateFields = $ 'input[type="date"]' dateFields.attr 'type', 'text' #this fails dateFields.datepicker() dateFields.on 'keyup', (e) -> e.preventDefault() $(@).val '' Beyond altering the input type with js, I am at a loss for how to fix this little bugger. Have you had to deal with this problem?

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• No method 'get' on backbone model save

  - by user888734

  I'm using backbone for a reasonably complicated form. I have a number of nested models, and have been computing other variables in the parent model like so: // INSIDE PARENT MODEL computedValue: function () { var value = this.get('childModel').get('childModelProperty'); return value; } This seems to work fine for keeping my UI in sync, but as soon as I call .save() on the parent model, I get: Uncaught TypeError: Object #<Object> has no method 'get' It seems that the child model kind of temporarily stops responding. Am I doing something inherently wrong? EDIT: The stack trace is: Uncaught TypeError: Object #<Object> has no method 'get' publish.js:90 Backbone.Model.extend.neutralDivisionComputer publish.js:90 Backbone.Model.extend.setNeutralComputed publish.js:39 Backbone.Events.trigger backbone.js:163 _.extend.change backbone.js:473 _.extend.set backbone.js:314 _.extend.save.options.success backbone.js:385 f.Callbacks.o jquery.min.js:2 f.Callbacks.p.fireWith jquery.min.js:2 w jquery.min.js:4 f.support.ajax.f.ajaxTransport.send.d

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• VB.net WebBrowser and AJAX List Options

  - by Vinsick

  I'm writing a VB.net program for a website that uses the AJAX Lits options http://www.ajaxdaddy.com/demo-dhtml-autocomplete.html Whats more is that the website has used additional arguments in the function that i'm not exactly sure what they are calling, and there a trigger that executes an action that must be click, tabbing and returning fail. Any idea on how to automate this? This website has been a holy terror since it was unleashed on my company. I've tried this: Dim ObjArr(4) As Object ObjArr(0) = CObj("prac_select") ObjArr(1) = CObj("'getCountriesByLetters'") ObjArr(2) = CObj("1") ObjArr(3) = CObj("'prac_name'") ObjArr(4) = CObj("'practice'") WebBrowser1.Document.InvokeScript("ajax_showOptions", ObjArr)

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• keypress event not being triggered only at start and end of text field in Firefox (JQuery)

  - by rlivsey

  I'm listening for keypress events on an input field with delegation. For some reason, Firefox doesn't trigger the delegated event for cursor UP when at the start of the field, or cursor DOWN when at the end. LEFT and RIGHT work as expected all the time. Directly binding an event listener to the field works fine, so it has to be something to do with delegation. Does anyone know if this is a know issue, I couldn't find anything on Google/forums etc..? $("div").delegate(":input", "keypress", function(e){ // doesn't get triggered }); $("div :input").bind("keypress", function(e){ // gets triggered fine }); Here's a demo which shows the issue - http://livsey.org/jquery.delegation.html

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• class not found when running

  - by captfrank

  I'm getting "could not find class" error when I run my app. Understand that copulation and execution path different but I followed the recommendations of another question to create a sub dir under my project of lib and put the jar there but still no luck. using Eclipse and it is when I run on a device from eclipse (unable to get the broadcast events I want to trigger this code from simulator, i.e. wifi and blue-tooth). Any way to look at the apk to see what's in it like this jar file? looking around did not see anything.

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• Best performance approach to history mechanism?

  - by Royi Namir

  We are going to create History Mechanism for our changes in DB (DART in pic) via Triggers. we have 600 tables. Each record that will be changed - the trigger will insert the deleted one into XXX. regarding to the XXX : option 1 : clone each table in "Dart" DB and each table now will have a "sister table" e.g. : Table1 will have Table1_History problems : we will have 1200 tables programmer can do mistakes by working on wrong tables... option 2 : make a new DB (DART_2005 in pic) and the history tables will be there option 3 : use linked server which stores the Db which will contain the history tables. question : 1) which option gives the best performance ( I guess 3 is not - but is it 1 or 2 or same ?) 2) Does option 2 is acting like "linked server" ( in queries we will need to select from both DB's...) 3) What is the best practice approach ?

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• Refresh a ListView if I change the content of the ListItem

  - by michael

  Hi, I have a ListView in my android activity. And I populate the ListView by sub-class the BaseAdaptor (which returns a View in getView() method). What if in my click listener of a button in a list item view, I change the text of the TextView in the List item view or change the dimension of the list item view by adding/removing children of the list item view What is an efficient to refresh my listView? I don't want the listView to re-trigger a query since there is no data change. Thank you.

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• MonoRail - Server-side vs. Client-side Form Validation

  - by Justin

  Hey, I'm using MonoRail and was wondering how it decides when to use client-side vs. server-side validation? In my model class I have [ValidateNonEmpty] on two properties, one is a textbox, the other is a dropdown. The textbox triggers client-side validation on form submission, if I leave the dropdown empty though it posts back to the server and returns back the validation error from server-side. Is there a way to get the dropdown to trigger client-side validation? Also it's odd because after the postback, it clears what I had entered in the dropdown but maintains the state of the textbox (viewstate anyone??) Thanks, Justin

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• IE 8 specifying background-color changes element behavior

  - by Mateo

  I have an absolutely positioned div on which I am trying to trigger mouseenter and mouseleave events. In IE8/7 with the background-color of the div left unspecified (so that it defaults to transparent), the mouseenter/leave events are not firing when the cursor crosses the div's boundary, only somewhere in the middle of the div and when the cursor is over any text within the div. When I attempt to debug the problem by adding a background color to the div (e.g. background-color: green), the problem magically goes away. The div's box model is honored perfectly and mouseenter/leave fire as when expected. It's only when the div's background color is left unspecified (or even explicitly set to transparent) that it doesn't behave correctly. Any ideas? Googling for this IE bug/quirk is coming up with nothing.

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• How can I make a Jeditable (jQuery) span activate editing on more than one event?

  - by JonathanHayward

  For the jQuery extension Jeditable, one of the parameters that can be specified is which DOM event will turn a div/span/... into a text input/textarea/... I would like to have more than one event serve as a trigger; that is, I would like either a click event or a contextmenu event to turn a span into an in-place edit area. Is there a graceful way to do this without forking Jeditable? --edit-- An example of code specifying the event is below. The parameter is optional, defaulting to a regular click. $(".edit_rightclick").editable("/ajax/save", { cancel: "Cancel", submit: "OK", tooltip: "Right click to edit.", event: "contextmenu", }); Calling twice, once for the regular click event with the event unspecified, and one for the contextmenu event (right-click if there are no switched mouse buttons or anything like that) does not seem to produce the intended effect of an element becoming editable in place on a click from either mouse button.

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• Triggering CSV download using Javascript?

  - by Sam Lee

  I have an url /reportcsv that generates a plain text csv with Content-type: text/csv and Content-disposition: attachment; filename=report.csv. I want trigger this csv to be downloaded using Javascript. I'm considering two methods: 1) Setting location.href = /reportcsv 2) Setting an iframe url to /reportcsv Both seem to work in Safari. I was wondering if there is any difference between them, or if one is recommended over the other. My main requirement is that I don't want the user to leave the current page.

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• PHP/MySQL - Special characters in URLs. How to avoid?

  - by RC

  Hey everyone, My database contains information extracted from an external feed. In this raw text feed, the following text is used in place of special characters: & - &amp; ' - &39; é - &eacute; I extract some of this text to form URLs. For example, a URL that I construct from data containing these characters might look like this: http://url.com/search/?brand=Franklin&Hédgson's I use the GET variables in this URL to construct further lookups, which leads to a couple of specific problems: The é and ' characters are sent back to MySQL as they appear, and so they don't trigger any results (because the characters take the full HTML form in the database text). The & within the URL separates the variable, and the GET returns only Franklin, when it should return the whole string. Are there any straightforward ways of dealing with this? Thanks.

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• Codebase for making a Flash-based interactive map with SVG vector data?

  - by Mike

  I'm looking for a way to take SVG path info (basically a string of coordinates) and dynamically draw it with Actionscript. Icing on the cake would be if those shapes could detect mouse events to trigger JS and dynamically change their appearance (fill, stroke, etc...). I'm currently trying something similar to this (http://raphaeljs.com/australia.html) using SVG but it's just too slow in IE. I've also tried Google's SVG Web (http://code.google.com/p/svgweb/) which basically does exactly what I'm looking for (it converts SVG to Flash in IE) but again, it's sloooooow - which is why I'm considering doing the whole shebang in Flash. Anyone know of some links to point me in the right direction?

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• Variable collation with MySQL stored function?

  - by Chad Johnson

  I want to do something like this in a stored procedure: IF case_sensitive = FALSE THEN SET search_collation = "utf8_unicode_ci"; ELSE SET search_collation = "utf8_bin"; END IF; INSERT INTO TABLE1 (field1, field2) SELECT * FROM TABLE 2 WHERE some_field LIKE '%rarf%' collate search_collation; However, when I do this, I get ERROR 1273 (HY000): Unknown collation: 'search_collation' Also, if I do what's suggested at http://stackoverflow.com/questions/1680850/mysql-stored-procedures-use-a-variable-as-the-database-name-in-a-cursor-declara/2070021#2070021 I get Dynamic SQL is not allowed in stored function or trigger How can I use a dynamic collation?

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• Can I prevent RequiredFieldValidation from triggering against postbacks from a specific control.

  - by marcusstarnes

  I have a web form with a number of textbox controls which I've associated RequiredFieldValidator's with. I have a ValidationSummary control on the page to render any incomplete fields when I submit the page. However, I've just had to add an image upload facility to the same page, and have an 'Upload' button which I have posting back to perform the upload. I don't want this upload button to trigger the RequiredFieldValidators for the rest of the page though - I want this upload postback to be ignored as far as the validation goes. What's the best way to stop the RequiredFieldValidator's from firing when I submit this upload button on the page because at the moment, the upload won't occur unless I have first field out all of the other textbox controls on the page.

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• Validate zip and display error with onBlur event

  - by phil

  Check if zip is 5 digit number, if not then display 'zip is invalid'. I want to use onBlur event to trigger the display. But it's not working. <script> $(function(){ function valid_zip() { var pat=/^[0-9]{5}$/; if ( !pat.test( $('#zip').val() ) ) {$('#zip').after('<p>zip is invalid</p>');} } }) </script> zip (US only) <input type="text" name='zip' id='zip' maxlength="5" onBlur="valid_zip()">

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• Passing extended parameter into Sql 2008 connection string

  - by Pita.O

  Hi, I have a need to support extensive auditing capabilities for a system backing into Sql Server 2008. Since I plan to use LINQ (with no Stored Procs), the database would be a clean, zero contact data repository. However, I need to pratically record a snapshot of every change that happens in the db. So, I thought I should use triggers. But then, I need a user id for the particular user (not the connection string user id) to flow through into the database. In oracle, I should have been able to set up a PROXY USER and the trigger would be able to pick that up. Last I checked, there was no proxy user concept in Sql Server. Does anyone know if there's any extender property I can use to flow through my authenticated user name? ps: I don't mind the impact on connection pooling (if any). Thanks. P

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• How do I save a file generated by an OS X Dashboard Widget?

  - by Weston C

  I've got a web app that I'm porting to an OS X Dashboard widget. The web app generates some data on the client side using JavaScript, and then, when the user wants to save it, sends it to a server-side script which relays the data back with the Content-disposition: attachment; HTTP header, triggering a save-file dialog in most browsers. I've tried duplicating this in the Dashboard environment. The Widget simply disappears. I don't know, but I suspect that it may be actually navigating to the unfamiliar content. So, how do I trigger a "save file dialog" -- or, failing that, use any method at all to save the data the Widget generates as a file?

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• switching default keyevents actions after key combinations

  - by liysd

  I need to change default actions of two events. When I press "enter" one action occurs, when I press "shift-enter" another. I need to switch it. I means if I press "enter" than "shift-enter" action occurs. I tried something like this but if doesn't work. f(evt.keyCode == 13) { if(!evt.shiftKey){ evt.preventDefault(); evt.shiftKey = true; var e = jQuery.Event("keydown"); e.which = 13; e.shiftKey = true; $(wym._doc).trigger(e); Is there any way to do it?

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• MySQL enters another value that the one given by PHP

  - by Tristan

  Hello, The big problem : mysql does not stores the information i told him to via PHP Example (this req is an echo just before the query) : INSERT INTO serveur (GSP_nom , IPserv, port, tickrate, membre, nomPays, finContrat, type, jeux, slot, ipClient, email) VALUES ( 'ckras', '88.191.88.57', '37060', '100' , '', 'Allemagne','20110519', '2', '4','99' ,'82.220.201.183','[email protected]'); But on the MySQL i have : 403 ckras 88.191.88.57 32767 100 Allemagne 20110519 1 2010-04-25 00:51:47 2 4 99 82.220.201.183 [email protected] port : 37060 (right value) //// 32767 (MySQL's drug?) Any help would be appreciated, i'm worse than stuck and i'm ** off PS: *There is no trigger on the mysql as far as i know / there is no controll on the port which means that nowhere i modify the "port" value and this script works for 80% of the time ( it seems that as soon as the users enters a port = 30000 it causes that bug), an user first reported to me this error today and the script was running since 3 months* Thanks

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• What's the cross-browser way to capture all single clicks on a button?

  - by sany

  What's the best way to execute a function exactly once every time a button is clicked, regardless of click speed and browser? Simply binding a "click" handler works perfectly in all browsers except IE. In IE, when the user clicks too fast, only "dblclick" fires, so the "click" handler is never executed. Other browsers trigger both events so it's not a problem for them. The obvious solution/hack (to me at least) is to attach a dblclick handler in IE that triggers my click handler twice. Another idea is to track clicks myself with mousedown/mouseup, which seems pretty primitive and probably belongs in a framework rather than my application. So, what's the best/usual/right way of handling this? (pure javascript or jQuery preferred)

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• Forcing Windows to re-scan for drivers

  - by Martin

  As part of our software's installation, we install drivers for a required 3rd party hardware component. Currently it's up to the user to manually scan for their hardware's drivers once our installation is completed. Is there an easy way to get Windows to automatically look for the drivers we installed? If so, how does it work? Do we need to tell the OS for which hardware device we have drivers, or just that we have drivers in a certain location? Or can we just install the drivers to System32 folder and trigger a driver rescan?

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• How do you assign a JavaScript 'onclick' attribute dynamically?

  - by Jack Roscoe

  Hi, I'm creating a button dynamically using JavaScript and at the same time assigning attributes such as 'ID', 'type' etc and also 'onclick' in order to trigger a function. All works fine apart from the assignment of the 'onclick'. When clicked, the button is not triggering the function as it is supposed to. the function I'm trying to run is 'navigate(-1)' as seen below. Where am I going wrong? Here's my code: function loadNavigation() { var backButton; backButton = document.createElement('input'); backButton.ID = 'backButton'; backButton.type = 'button'; backButton.value='Back'; backButton.onclick = 'navigate(-1)'; document.body.appendChild(backButton); }

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• Stagger increments in C# NumericUpDown control

  - by mihe

  Hi cloud of wisdom :-) I am facing some trouble trying to configure a particular configuration for a NumericUpDown control in c#. Basically, I have seen that I can set the Increment interval, but I would like to manage the Increment interval depending on which arrow is clicked (up or down). I have checked the events of the control, but I do not find an event for each arrow. Basically, I want to achieve a control where, at different values, the increment is different. from 0.00 to 5.00 increments of 0.01, from 5.00 to 20.00 increments of 0.04, and so on Is this possible ? Note: It would be useful also an historic value in the control for the last value when the valuechanged event is trigger. Does this exist? Thanks in advance for any comment or suggestion!!!

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