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• Need help on how to setup my packages and projects in eclipse

  - by jax

  I am new to Java and am making a license generator. This is my current setup. com.example.licensegenerator.client (used by the client application) :LicenseLoader (no Main method) :LicenseDownloader (no Main method) com.example.licensegenerator.server.keys (used by the server) :ProductKeyGenerator(Main method) com.example.licensegenerator.server.license (used on the server also) :LicenseGenerator(Main method) com.example.licensegenerator.lib (Shared classes between client and server) :Contants (no main) Now I have a few questions. Is it OK to have multiple Main() methods in a single project? Will I be able to compile them to different .jar files? (In this case I need two different jars for the server) Is there a better way to setup the packages? And a totally unrelated question, with exceptions, is it better to handle them right then and there or throw them and let the main method catch them all (the program cannot recover if an error occurs)

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• Clear all currently defined vim macros

  - by Simon Walker

  Hi everyone I have a vim macro that I keep mistyping, usually when I'm trying to save something so I do it quickly and I can't work out what keys I pressed. It is annoying as it pastes some irrelevant bash code into my file so I have to undo the erroneous pasting which also undos the last thing I typed that I do want. I was looking for a way to either list the currently defined macros (so I can redefine the offending one), or a way to clear out them completely. I only use macros in the very short term so I don't mind losing them all. Cheers

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• Django: Staff Decorator

  - by Mark

  I'm trying to write a "staff only" decorator for Django, but I can't seem to get it to work: def staff_only(error='Only staff may view this page.'): def _dec(view_func): def _view(request, *args, **kwargs): u = request.user if u.is_authenticated() and u.is_staff: return view_func(request, *args, **kwargs) messages.error(request, error) return HttpResponseRedirect(request.META.get('HTTP_REFERER', reverse('home'))) _view.__name__ = view_func.__name__ _view.__dict__ = view_func.__dict__ _view.__doc__ = view_func.__doc__ return _view return _dec Trying to follow lead from here. I'm getting: 'WSGIRequest' object has no attribute '__name__' But if I take those 3 lines out, I just get a useless "Internal Server Error". What am I doing wrong here?

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• Set to null a parent record so that children are removed: howto?

  - by EugeneP

  How to delete a child row (on delete cascade ?) when setting a null value on a parent? Here's the db design. table A [id, b_id_1, b_id_2] table B [id, other fields...] b_id_1 and b_id_2 can be NULL if any of them is null, it means NO B records for corresponding FK (there are 2 of them) so (b_id_1,b_id_2) can be (null,null), (100, null), (null, 100_or_any_other_number) etc How in one SQL query both set b_id_1 or b_id_2 to null and delete all rows from B that have this id? What FK design should be applied to the 2 tables? what foreign keys should be added? A - B (FK_1: A.b_id_1 references B.id, FK_2: A.b_id_2 references B.id) and also B-A (FK_3: B.id references A.b_id_1, FK_4: B.id references A.b_id_2) ? But again, setting an A's b_id_1 or A's b_id_2 to null - will it remove any of B's records? I don't think so. So how to do that?

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• Sharepoint Document Upload Page - Passing URL Variables?

  - by Corey O.

  Throughout my SharePoint site, I have several document repositories that are tied to primary keys from an external database. I have added custom columns in the document library metadata fields so that we will know which SharePoint documents correspond with which table entries. As a requirement, we need to have document uploads that have these fields automatically populated. For instance, I'd like to have the following url: ./Upload.aspx?ClassID=2&SystemID=63 So that when you upload any documents to this library, it automatically adds the ClassID and SystemID values to the corresponding ClassID and SystemID columns outlined in the SharePoint document library fields. Is there any quick or easy way to do this, or will I have to completely rewrite the Upload.aspx script from scratch?

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• Set primary key on hibernate generated sequence table

  - by bungrudi

  setup: hibernate 3.3, MySQL 5 I have an hibernate entity that have its PK generated using a sequence table. The annotation looks like this: @GenericGenerator(name = "SCENARIO_TABLE_GEN", strategy = "org.hibernate.id.enhanced.TableGenerator", parameters = { @Parameter(name = "initial_value", value = "5"), @Parameter(name = "force_table_use", value = "true"), @Parameter(name = "table_name", value = "SEQ_TABLE"), @Parameter(name = "value_column_name", value = "VALUE_COL"), @Parameter(name = "segment_column_name", value = "KEY_COL"), @Parameter(name = "segment_value", value = "SCENARIO") }) The problem is, that hibernate generated sequence table (SEQ_TABLE in my case, generated using hbm2ddl) does not have a primary keys. How do I tell hibernate that I want to have the primary key for the sequence table set on KEY_COL ?

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• Adding behaviour to a set of classes

  - by devoured elysium

  I have defined an Event class: Event and all the following classes inherit from Event: SportEventType1 SportEventType2 SportEventType3 SportEventType4 Right now I will only have SportEvents but I don't know if in the future I'll want some other kind of events that doesn't even have anything to do with Sports. Later, I will want to draw some graphics with info taken from Events, and the drawing logic can be a bit complex. But, for the moment, I think I shouldn't think of how the drawing will be done and I believe that maybe it'd be better if that drawing part was not put as an integral part of the Event/SportEventX class chain. I am looking for solutions for this problem. I know I could just make Event have an instance variable(attribute, for the java crowds) pointing to something as an IDrawInterface, but that would make the Event class "assume" it will be later used for drawing. I would like to make the Event class oblivious to this if possible. Thanks!

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• Grails: can remoteField update multiple fields?

  - by Michael Bavin

  Hi, Assume i have a book entity with an isbn field. When entered a isbn number, i want 2 fields to be updated: title and author. My controller looks like this: def ajaxGetBook = { def book = Book.findByIsbn(params.isbn) if(book==null) book = new Book() render book as JSON } So my call works, and i get a full JSON Book. Now i would like to update 2 texfields by the update attribute <g:remoteField action="ajaxGetBook" update="title" name="isbn" value="${bookInstance?.book?.isbn}" paramName="isbn"/> Now the title field gets updated with the full book object, so that doesn't work. Is it possible to update field title with only the JSON book.title? Is it possible to update more fields at once? I could render book.title as JSON but that works for only one field. Thank you

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• What is wrong with my SQL syntax for an UPDATE with a JOIN?

  - by Phil H

  I have two tables, related by a common key. So TableA has key AID and value Name and TableB has keys AID, BID and values Name, Value: AID Name 74 Alpha AID BID Name Value 74 4 Beta Brilliance I would like to update the TableB Value here from Brilliance to Barmy, using just the Name fields. I thought I could do it via an UPDATE containing a JOIN, but Access (I know...) is complaining with 'Syntax error (missing operator) in query expression ' and then everything from 'Barmy' here: UPDATE tB SET tB.BValue='Barmy' FROM TableB tB INNER JOIN TableA tA ON tB.AID=tA.AID WHERE tB.Name='Beta' AND tA.Name='Alpha'; What is my heinous crime? Or is it just Access not conforming?

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• WF - Creating a selective list

  - by Michael Bendtsen

  I have a stupid question. I have created a workflow Designer host where I publish my own activities. I also have a property grid which only displays the properties decorated with a special attribute. This designer is going to be used by none IT staff. What I want is that on an activity the user can select a property value from a list. I know I just could create an Enum but I would like it to be dynamic. I.e. all events on a specific interface (extracted using reflection). Is this at all possible or am I stuck with enums?

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• Refactor: Javascript block

  - by Shpigford

  Need some help refactoring this code: $("span[rel=color_content]").ColorPicker({ onChange: function (hsb, hex, rg) { $("span[rel=color_content]").css('background-color', '#' + hex); } }); $("span[rel=color_link]").ColorPicker({ onChange: function (hsb, hex, rg) { $("span[rel=color_link]").css('background-color', '#' + hex); } }); $("span[rel=color_selected]").ColorPicker({ onChange: function (hsb, hex, rg) { $("span[rel=color_selected]").css('background-color', '#' + hex); } }); $("span[rel=color_page]").ColorPicker({ onChange: function (hsb, hex, rg) { $("span[rel=color_page]").css('background-color', '#' + hex); } }); $("span[rel=color_player]").ColorPicker({ onChange: function (hsb, hex, rg) { $("span[rel=color_player]").css('background-color', '#' + hex); } }); The only thing changing between each is the contents of the rel attribute.

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• updated validation example for web api

  - by MonkeyBonkey

  I tried the validation example code for web api on the latest mvc 4 download and I'm getting some errors. Does anyone have an updated example of the ValidationActionFilter class. Here's the original code public class ValidationActionFilter : ActionFilterAttribute { public override void OnActionExecuting(HttpActionContext context) { var modelState = context.ModelState; if (!modelState.IsValid) { dynamic errors = new JsonObject(); foreach (var key in modelState.Keys) { var state = modelState[key]; if (state.Errors.Any()) { errors[key] = state.Errors.First().ErrorMessage; } } context.Response = new HttpResponseMessage<JsonValue>(errors, HttpStatusCode.BadRequest); } } } I'm getting an error on HttpResponseMessage The non-generic type 'System.Net.Http.HttpResponseMessage' cannot be used with type arguments Also it looks like I need to add a Json reference, but should I be using JSON.net instead? An example of this using Json.net?

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• XUL: create menu items dynamically and set "selected" attr

  - by Michael

  I have a firefox extension Options pref panel, where I should dynamically create menu items and select particular item to be current. here is the XUL file part <menulist id="rss_service_combo"> <menupopup id="rss_service_menu"/> </menulist> Then in load event of the pref panel, using js I append menuitem elements into menupop. This is working fine. The only problem is that even if I set the selected element the item is not selected and combo box is initially empty. The only way is working at the moment is if I manually add those menuitems into XUL file and set selected attribute, but I need to do it dynamically.

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• How to make sure the value is reset in foreach loop in PHP

  - by kwokwai

  Hi all, I was writing a simple PHP page and a few foreach loops were used. Here are the scripts: $arrs = array("a", "b", "c"); foreach ($arrs as $arr) { if(substr($arr,0,1)=="b") { echo "This is b"; } } // ends of first foreach loop and I didn't use ifelse here And when this foreach ends, I wrote another foreach loop in which all the values in the foreach loop was the same as previous foreach. foreach ($arrs as $arr) { if(substr($arr,0,1)=="c") { echo "This is c"; } } I am not sure if it is a good practice to have two foreach loops with same values and keys. Will the values get overwritten in the first foreach loop?

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• Getting a random element in Django

  - by Sarah

  I just finished the Django tutorial and started work on my own project, however, I seem to have missed something completely. I wanted to get a random slogan from this model: from django.db import models class Slogan(models.Model): slogan = models.CharField(max_length=200) And return it in this view: from django.http import HttpResponse from swarm.sloganrotator.models import Slogan def index(request): return HttpResponse(Slogan.objects.order_by('?')[:1]) However, the view just returns 'Slogan object'. Then I thought, maybe I can access the slogan string itself by simply appending .slogan to the slice, but that gives me an error indicating that the object I have is actually a QuerySet and has no attribute slogan. I've obviously misunderstood something about Django here, but it just doesn't fall into place for me. Any help?

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• PrintingPermissionLevel, SafePrinting, and restrictions

  - by Steve Cooper

  There is a PrintingPermission attribute in the framework which takes a PrintingPermissionLevel enumeration with one of these values; NoPrinting: Prevents access to printers. NoPrinting is a subset of SafePrinting. SafePrinting: Provides printing only from a restricted dialog box. SafePrinting is a subset of DefaultPrinting. DefaultPrinting: Provides printing programmatically to the default printer, along with safe printing through semirestricted dialog box. DefaultPrinting is a subset of AllPrinting. AllPrinting: Provides full access to all printers. The documentation is really sparse, and I wondered if anyone can tell me more about the SafePrinting option. What does the documentation mean when it says "Provides printing only from a restricted dialog box." I have no idea what this means. Can anyone shed any light? This subject is touched in the MS certification 70-505: TS: Microsoft .NET Framework 3.5, Windows Forms Application Development and so I'm keen to find out more.

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• Established javascript solution for secure registration & authentication without SSL

  - by Tomas

  Is there any solution for secure user registration and authentication without SSL? With "secure" I mean safe from passive eavesdropping, not from man-in-the-middle (I'm aware that only SSL with signed certificate will reach this degree of security). The registration (password setup, i.e. exchanging of pre-shared keys) must be also secured without SSL (this will be the hardest part I guess). I prefer established and well tested solution. If possible, I don't want to reinvent the wheel and make up my own cryptographic protocols. Thanks in advance.

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• ASP.net hiding panel using javascript

  - by Zaps

  Hi, I have a radioButtonList with 2 items in it. A radiobutton with a "Yes" value and a radionButton with a "No" value. Below that I have a panel which I want made visible when "Yes" radioButton is selected and hidden when "No" is selected. I had originally implemented this using the AutoPostBack attribute but I want to do it in Javascript so that it doesn't cause a postback. Here's the code. Any help would be greatly appreciated. <asp:RadioButtonList ID="rbl1" runat="server" onClick="changed(this);" > <asp:ListItem Value="Yes">Yes</asp:ListItem> <asp:ListItem Value="No">No</asp:ListItem> <asp:Panel ID="panel1" runat="server"> <--other controls here --> </asp:Panel> function changed(rbl) { //not sure what to put in here } Thanks in advance, Zaps

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• Using local configs in a Heroku deployment environment

  - by ambertch

  I'm trying to migrate my app to Heroku - I have a config file that varies with development/staging/production environments as it contains uniquely assigned keys (from Facebook, S3, etc.), so I keep it out of the repository and keep the configs local. As such I'm trying to find a solution for Heroku to have that config file since Heroku deploys from the repository. I noticed Heroku deploys from the master branch - can it deploy from another branch? Because then I could commit the Heroku configs there, and have it not overwrite the other environments' configs every time it pulls. Thanks!

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• Java Hibernate Lazy=false

  - by Noor

  When setting Lazy=false, then hibernate will automatically loads the objects into the required sets e.g. <set name="Options" table="ATTRIBUTEOPTION" inverse="false" cascade="all" lazy="false"> <key> <column name="ATTRIBUTEID" /> </key> <one-to-many class="com.BiddingSystem.Models.AttributeOption" /> </set> but if in my xml mapping, I place lazy=true and in some place in my application i decide that i want to load all attribute options, should i do it manually, or is there a technique which lets tells hibernate that now i want to set lazy=false??

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• Specify fields in a recursive find with cakephp

  - by Razor Storm

  Suppose I have a table Recipe that hasmany ingredients. I do a recursive find to grab recipes with their associated ingredients: $this->Recipe->find('all', array('fields' => array('id','title','description'))); Here I can use the 'fields' attribute to specify that I only want it to return id, title, and description. However, despite this, cakephp still returns ALL columns from the ingredients table. How do I tell cakephp that I only want ingredient table's id and name fields? btw ingredient model is "Ingredient" and the table is ingredients, and the aggregation table is recipes_ingredients.

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• How to define an angular directive inside an angular directive's link function?

  - by user2316667

  I want to create an angular directive inside of a link function, however; the directive created is not able to be compiled. See this JSFiddle: http://jsfiddle.net/v47uvsj5/5/ Uncommenting this directive in the global space works as expected. app.directive('test', function () { return { templateUrl: 'myform', // wraps script tag with id 'myform' restrict: 'E', require: "^mydir", replace: true, scope: { }, link: function (scope, element, attrs, mydirCtrl) { scope.remove = function () { element.remove(); mydirCtrl.remove(); } } } }); But the exact same code inside the link function fails. The reason I want to do this is because I want the user (who is going to be myself) to be able to provide only a script tag's id via an id attribute to my main directive which will in turn create a 'wrapper' directive with a 'remove' method. This way, in the script tag, all one needs to do is implement the 'remove'.

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• Getting Notifications in Background Mode iOS?

  - by Pau Senabre

  I'm trying to get Notifications in Background Mode by running a method every minute to see if there are new notifications. This works great in Active Mode, but I saw for background mode it is restricted to 7 keys. I enabled the Background Mode with the option Background Fetch, but seems like the method is being called but it's not complete. In AppDelegate I'm calling: - (void)applicationDidEnterBackground:(UIApplication *)application { //This has a Timer to execute every minute [self GetNotifications]; //This executes a NSMutableURLRequest *request //giving back the JSON data with the notifications } I would like to do something like Facebook does for Notifications. Any idea how to do this?

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• PHP sleep accuracy

  - by Abs

  Hello all, I use the following code to see how long a user is on a particular page. I use a hidden image with a src attribute to this script: $timer_seconds = 1; while(!connection_aborted()) { echo "\n"; flush(); sleep(1); $timer_seconds++; } I sometimes find this can be off by 5-10 seconds! I am guessing its the load of the server that effects the timing?? Is there anyway I can make this accurate? Thanks all for any help.

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• ValidateRequest="false" doesn't work!!!

  - by Ivan90

  Hy guys, I am developing a personal blog in asp.net mvc 1.0! So, I need in some pages to disable validaterequest because, I have to insert html text! For example.. in the page "Insert Post", "Edit Post".. I need to insert html! I read on web that's necessary to disable validaterequest directly in page with attribute validaterequest = "false" or in webconfig file! I tryied all ways, but when I insert in my textarea html code, I get always the error of potential value dangerous! Any solutions?

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