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  • nhibernate/fluenthibernate throws StackOverflowException

    - by Gianluca Colucci
    Hi there! In my project I am using NHibernate/FluentNHibernate, and I am working with two entities, contracts and services. This is my contract type: [Serializable] public partial class TTLCContract { public virtual long? Id { get; set; } // other properties here public virtual Iesi.Collections.Generic.ISet<TTLCService> Services { get; set; } // implementation of Equals // and GetHashCode here } and this is my service type: [Serializable] public partial class TTLCService { public virtual long? Id { get; set; } // other properties here public virtual Activity.Models.TTLCContract Contract { get; set; } // implementation of Equals // and GetHashCode here } Ok, so as you can see, I want my contract object to have many services, and each Service needs to have a reference to the parent Contract. I am using FluentNhibernate. So my mappings file are the following: public TTLCContractMapping() { Table("tab_tlc_contracts"); Id(x => x.Id, "tlc_contract_id"); HasMany(x => x.Services) .Inverse() .Cascade.All() .KeyColumn("tlc_contract_id") .AsSet(); } and public TTLCServiceMapping() { Table("tab_tlc_services"); Id(x => x.Id, "tlc_service_id"); References(x => x.Contract) .Not.Nullable() .Column("tlc_contract_id"); } and here comes my problem: if I retrieve the list of all contracts in the db, it works. if I retrieve the list of all services in a given contract, I get a StackOverflowException.... Do you see anything wrong with what I wrote? Have I made any mistake? Please let me know if you need any additional information. Oh yes, I missed to say... looking at the stacktrace I see the system is loading all the services and then it is loading again the contracts related to those services. I don't really have the necessary experience nor ideas anymore to understand what's going on.. so any help would be really really great! Thanks in advance, Cheers, Gianluca.

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  • Running a python script on all the files in a directory.

    - by S1syphus
    I have a Python script that reads through a text csv file and creates a playlist file. However I can only do one at a time, like: python playlist.py foo.csv foolist.txt However, I have a directory of files that need to be made into a playlist, with different names, and sometimes a different number of files. So far I have looked at creating a txt file with a list of all the names of the file in the directory, then loop through each line of that, however I know there must be an easier way to do it.

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  • dropdownlist itemsource and selected value in wpf

    - by vahid
    hi all i have a dropdownlist that bind to a collection of all system colors(ObjectDataProvider).it shows colors name and background of each items is draw with colorName.it works fine . but know i have a listbox that bind to an collection(CollectionViewSource) that shows a list of element with a property name "backcolor" ,i want to selectedvalue of dropdown changed when selecteditem in listBox changed ???? my paltform is WPF and i know a few about masterDetails senario

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  • How Can I create different selectors for accepting new connection in java NIO

    - by Deepak
    I want to write java tcp socket programming using java NIO. Its working fine. But I am using the same selector for accepting reading from and writing to the clients. How Can I create different selectors for accepting new connection in java NIO, reading and writing. Is there any online help. Actually when I am busy in reading or writing my selector uses more iterator. So If more number of clients are connected then performance of accepting new coneection became slow. But I donot want the accepting clients to be slow // Create a selector and register two socket channels Selector selector = null; try { // Create the selector selector = Selector.open(); // Create two non-blocking sockets. This method is implemented in // e173 Creating a Non-Blocking Socket. SocketChannel sChannel1 = createSocketChannel("hostname.com", 80); SocketChannel sChannel2 = createSocketChannel("hostname.com", 80); // Register the channel with selector, listening for all events sChannel1.register(selector, sChannel1.validOps()); sChannel2.register(selector, sChannel1.validOps()); } catch (IOException e) { } // Wait for events while (true) { try { // Wait for an event selector.select(); } catch (IOException e) { // Handle error with selector break; } // Get list of selection keys with pending events Iterator it = selector.selectedKeys().iterator(); // Process each key at a time while (it.hasNext()) { // Get the selection key SelectionKey selKey = (SelectionKey)it.next(); // Remove it from the list to indicate that it is being processed it.remove(); try { processSelectionKey(selKey); } catch (IOException e) { // Handle error with channel and unregister selKey.cancel(); } } } public void processSelectionKey(SelectionKey selKey) throws IOException { // Since the ready operations are cumulative, // need to check readiness for each operation if (selKey.isValid() && selKey.isConnectable()) { // Get channel with connection request SocketChannel sChannel = (SocketChannel)selKey.channel(); boolean success = sChannel.finishConnect(); if (!success) { // An error occurred; handle it // Unregister the channel with this selector selKey.cancel(); } } if (selKey.isValid() && selKey.isReadable()) { // Get channel with bytes to read SocketChannel sChannel = (SocketChannel)selKey.channel(); // See e174 Reading from a SocketChannel } if (selKey.isValid() && selKey.isWritable()) { // Get channel that's ready for more bytes SocketChannel sChannel = (SocketChannel)selKey.channel(); } } Thanks Deepak

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  • Tell jQuery to ignore clicks during an animation sequence

    - by dclowd9901
    I'm in the midst of writing a slideShow app (click a button, and you slide through a list of images) for jQuery, but I've run into a little bug where it will respond to the click() request even while an animation is happening. I'm using the animate() function already, so that isn't staving off the additional animation requests. Any way to program around this?

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  • How do you set the initial value for a ManyToMany field in django?

    - by mlissner
    I am using a ModelForm to create a form, and I have gotten the initial values set for every field in the form except for the one that is a ManyToMany field. I understand that I need to give it a list, but I can't get it to work. My code right now is roughly: contacts = userProfile.contact.all() initial = {'contacts': contacts} But that doesn't work. Am I missing something here?

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  • Jquery autocomplete

    - by Jos
    Hi All, I m using autocomplete from http://bassistance.de/jquery-plugins/jquery-plugin-autocomplete/ jQuery Autocomplete plugin 1.1 i managed to get data from server in below form with sepaerator to id as "-", but i dont want to show this id in list while selecting but sending it as hidden data.Please suggest. Exon: Supplier HJR/VAKJ -1

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  • Most useful jQuery plugins

    - by Binoj Antony
    Which are the most useful jQuery plugins you have used. List out one per answer(to rank the best plugins individually), and describe what it does as well. BlockUI - Can block certain elements (or the whole page) during ajax requests. Form Plugin JQueryUI JQuery Validation TableSorter Taconite

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  • problem with pathForResource

    - by mr.octobor
    HI all I have problem with NSString *filePaht = [[NSBundle mainBundle] pathForResource:(NSString *)name ofType:(NSString *)ext]; if I used NSString *filePaht = [[NSBundle mainBundle] pathForResource:@"soundName" ofType:@"aiff"]; it's OK but when I used NSString *fileName = [[file.list objectAtIndex:index] objectForKey:@"soundName"]; NSString *filePaht = [[NSBundle mainBundle] pathForResource:fileName ofType:@"aiff"]; It's not work have any idea !? Thanks

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  • Producing POD summary information in HTML

    - by justintime
    Is there a tool available that can produce an HTML summary list of perl modules or scripts in a directory tree. Given =head1 NAME wibble.pl - does wibble actions I would like to see something like <a href="docsforwibble">wibble.pl</a> - does wibble actions <a href="docsforwobble">wibble.pl</a> - does wobble actions

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  • convert rst to latex, problem with tables

    - by ace
    hi all, I have some .rst files and I convert them to .tex file using standard sphinx converter. but in some .rst I have tables with special width like: .. list-table:: :widths: 50 50 but resulting .tex always contains tables like: \begin{tabulary}{\textwidth}{|L|L|} so, column width is lost. how can I preserve column width when converting rst to latex?

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  • NHibernate criteria construction

    - by brianberns
    I am trying to recreate something like the following SQL using NHibernate criteria: select Range, count(*) from ( select case when ent.ID between 'A' and 'N' then 'A-M' else 'Other' end as Range from Subject ) tbl group by tbl.Range I am able to create the inner select as follows: session.CreateCriteria<Subject>() .SetProjection( Projections.Conditional( Expression.Between("Name", "A", "N"), Projections.Constant("A-N"), Projections.Constant("Other"))) .List(); However, I can't figure out how to pipe those results into a grouping by row count. Any suggestions? Thanks. -- Brian

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  • Select some records ...

    - by Kris-I
    I have an IList<MyList>. I'd like with LINQ keep the same list (same number of record) but I'd like reduce or/and rename some record. At the end I'd like to have IList<MyNewList>.

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  • MySQL table organization and optimization (Rails)

    - by aguynamedloren
    I've been learning Ruby on Rails over the past few months with no prior programming experience. Lately, I've been thinking about database optimization and table organization. I know there are great books on the subject, but I typically learn by example / as I go. Here's a hypothetical situation: Let's say I am building a social network for a niche community with 250,000 members (users). The users have the ability to attend events. Let's say there are 50,000 past/present/future events. Much like Facebook events, a user can attend any number of events and an event can have any number of attendees. In the database, there would be a table for users and a table for events. Somehow I would have to create an association between the users and events. I could create an "events" column in the users table such that each user row would contain a hash of event IDs, or I could create an "attendees" column in the events table such that each event row would contain a hash of user IDs. Neither of these solutions seem ideal, however. On a users profile page, I want to display the list of events they are associated with, which would require scanning the 50,000 event rows for the user ID of said user if I include an "attendees" column in the events table. Likewise, on an event page, I want to display a list of attendees for the event, which would require scanning the 250,000 user rows for the event ID of said event if I include an "events" column in the users table. Option 3 would be to create a third table that contains the attendee information for each and every event - but I don't see how this would solve any problems. Are these non-issues? Rails makes accessing all of this information easy, but I guess I'm worried about scale. It is entirely possible that I am under-estimating the speed and processing power of modern databases / servers / etc. How long would it take to scan 250,000 user rows for specific event IDs - 10ms? 100ms? 1,000ms? I guess that's not that bad. Am I just over-thinking this?

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  • How can I get the next page of friends using the Twitter API?

    - by vakas
    I am using the api twitterizer2 downloaded from http://code.google.com/p/twitterizer/downloads/list but when I try to get the friends of a user I get 100 friends but I can't get the next 100 friends through the NextPage function. How can I handle this...? Twitterizer.TwitterUserCollection userFollowing = Tw.TwitterUser.GetFriends(tokens,TwitterUrl); Twitterizer.TwitterUserCollection page2=userFollowing.NextPage; When I get the next page it returns the same 100 users.

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  • How to update strongly typed Html.DropDownList using Jquery

    - by Remnant
    I have a webpage with two radiobuttons and a dropdownlist as follows: <div class="sectionheader">Course <div class="dropdown"><%=Html.DropDownList("CourseSelection", Model.CourseList, new { @class = "dropdown" })%> </div> <div class="radiobuttons"><label><%=Html.RadioButton("CourseType", "Advanced", false )%> Advanced </label></div> <div class="radiobuttons"><label><%=Html.RadioButton("CourseType", "Beginner", true )%> Beginner </label></div> </div> The dropdownlist is strongly typed and populated with Model.CourseList (NB - on the first page load, 'Beginner' is the default selection and the dropdown shows the beginner course options accordingly) What I want to be able to do is to update the DropDownList based on which radiobutton is selected i.e. if 'Advanced' selected then show one list of course options in dropdown, and if 'Beginner' selected then show another list of courses. The code I would like to call sits within my Controller: public JsonResult UpdateDropDown(string courseType) { IDropDownList dropdownlistRepository = new DropDownListRepository(); IEnumerable<SelectListItem> courseList = dropdownlistRepository.GetCourseList(courseType); return Json(courseList); } Edit - Updated below to show latest position Using examples provided in jQuery in Action, I now have the following jQuery code: $('.radiobuttons input:radio').click(function() { var courseType = $(this).val(); //Get selected courseType from radiobutton var dropdownList = $(".dropdown"); //Ref for dropdownlist $.getJSON("/ByCourse/UpdateDropDown", { courseType: courseType }, function(data) { $(dropdownList).loadSelect(data); }); }); The loadSelect function is taken straight from the book and is as follows: (function($) { $.fn.emptySelect = function() { return this.each(function() { if (this.tagName == 'SELECT') this.options.length = 0; }); } $.fn.loadSelect = function(optionsDataArray) { return this.emptySelect().each(function() { if (this.tagName == 'SELECT') { var selectElement = this; $.each(optionsDataArray, function(index, optionData) { var option = new Option(optionData.Text, optionData.Value); if ($.browser.msie) { selectElement.add(option); } else { selectElement.add(option, null); } }); } }); } })(jQuery); 1 day+ later I still cannot get this to work. Assuming the jQuery code is correct then I can only think that the issue is with retrieving the actual data with $getJSON. I have verified that JsonResult UpdateDropDown does actually retrieve valid data. What am I missing? Assembly reference? (NB: I have MicrosoftAjax.js and MicrosoftMvcAjax.js in my head tags of the master page Should JsonResult be ActionResult? (I have seen both used in samples on web) Do I need to register route Controller/UpdateDropDown in Global.asax? Any further guidance would be appreciated.

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  • Which .NET libraries do you use most ?

    - by Quandary
    Which .NET programming libaries do you use most ? I'm putting together a list, kind of "best of" SourceForge, CodePlex, Google Code, GitHub, etc. SourceForge.NET Nhibernate (database ORM) SharpZipLib (ZIP compression) itextsharp (PDF library) GitHub: JQuery (JavaScript) Google Code: aforge (imaging) Codeplex: Excel Data-Reader Other: bouncycastle.org (Encryption)

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  • JSF single select box with customizable look-and-feel

    - by Greg Charles
    I'm looking for a control that allows me to choose a single option from a list of choices via a dropdown box. The h:singleSelectMenu or h:singleSelectListBox worked well, but now I have a requirement to customize the glyph that triggers the dropdown. I've looked at the RichFaces components, but I don't see anything like a single select box.

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  • MYSQL query to return rows that are NOT in a set

    - by iglurat
    Hi, I have two tables: Contact (id,name) Link (id, contact_id, source_id) I have the following query which works that returns the contacts with the source_id of 8 in the Link table. SELECT name FROM `Contact` LEFT JOIN Link ON Link.contact_id = Contact.id WHERE Link.source_id=8; However I am a little stumped on how to return a list of all the contacts which are NOT associated with source_id of 8. A simple != will not work as contacts without any links are not returned. Thanks.

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