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  • MVC nhibernate entiry mapping for dropdown list

    - by Rod McLeay
    Hi, I have a dropdown list on an ASP.NET MVC project that I am pretty sure is not binding to my model because of my nhibernate mapping. I have tried many variations on the asp mvc side resulting in this post here. MVC side of things seems fine I believe the issue may be that my object is trying to bind, but my mapping is out of whack. My mapping is: <many-to-one name="Project" lazy="false" class="AgileThought.ERP.Domain.Property.Project" column="ProjectGUID" /> My View gives an error saying that the GUID from the dropdownList selected value is not valid. Which I think may be that it is trying to push the GUID into my related project object. The value 'fd38c877-706f-431d-b624-1269184eeeb5' is invalid. My related project list binds to the dropdown list just fine, it is just not binding to my models Project entity. Does the related Project entity need to know about its relationship? Its really just a lookup list. Many thanks for your time and best regards, Rod

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  • Subversion svn:externals - What's wrong here?

    - by Brandon Montgomery
    I first want to say I've read the Subversion manual. I've read this question. I've also read this question. Here's my dilemma. Let's say I have 3 repositories laid out like this: DataAccessObject/ branches/ tags/ trunk/ DataAccessObject/ DataAccessObjectTests/ PlanObject/ branches/ tags/ trunk/ PlanObject/ PlanObjectTests/ WinFormsPlanViewer/ branches/ tags/ trunk/ WinFormsPlanViewer/ The PlanObject and DataAccessObject repositories contain shared projects. They are used by the WinFormsPlanViewer, but also by several other projects in several other repositories. Bear with me here. I put an svn:externals definition on the WinFormsPlanViewer/trunk folder like this: https://server/svn/PlanObject/trunk Objects https://server/svn/DataAccessObject/trunk Objects And here's what I see after I do an svn update. WinFormsPlanViewer/ branches/ tags/ trunk/ WinFormsPlanViewer/ Objects/ DataAccessObject/ DataAccessObjectTests/ The PlanObject stuff doesn't even come down in the update! I don't know if this has anything to do with it, but there's an externals definition on the PlanObject/trunk folder also: https://server/svn/DataAccessObject/trunk Objects What's going on here? What am I doing wrong? Are there bad consequences of referencing the PlanObject and the DataAccessObject from the WinFormsPlanViewer using svn:externals when the PlanObject references the DataAccessObject using svn:externals also?

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  • What's the purpose of "import package"?

    - by codethief
    As I just found out import package does not make the package's modules available through package.module. The same obviously holds true for from package import subpackage as well as from package import * What's the purpose of importing a package at all then if I can't access its submodules but only the objects defined in __init__.py? It makes sense to me that from package import * would bloat the namespace, which, however, doesn't apply in case of the other two ways! I also understand that loading all submodules might take a long time. But I don't know what these unwanted side-effects, "that should only happen when the sub-module is explicitly imported", are which the author of the previous link mentions. To me it looks like doing an import package[.subpackage] (or from package import subpackage) makes absolutely no sense if I don't exactly want to access objects provided in __init__.py. Are those unwanted side effects really that serious that the language actually has to protect the programmer from causing them? Actually, I thought that Python was a little bit more about "If the programmer wants to do it, let him do it." In my case, I really do want to import all submodules with the single statement from package import subpackage, because I need all of them! Telling Python in the init.py file which submodules I'm exactly talking about (all of them!) is quite cumbersome from my point of view. Please enlighten me. :)

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  • With Apache/mod_wsgi how can I redirect to ssl and require Auth?

    - by justin
    I have a Media Temple DV server hosting dev.example.com with django mounted at /. There is a legacy directory in my httpdocs I need to continue to serve at /legacy. But for this directory I need to redirect anyone coming over http over to https, then prompt for http basic auth. In the virtual host conf, I'm pointing the root to a django application: WSGIScriptAlias / /var/django-projects/myproject/apache/django.wsgi <Directory /var/django-projects/myproject/apache> Order allow,deny Allow from all </Directory> Then I alias the legacy directory. Alias /legacy/ /var/www/vhosts/example.com/subdomains/dev/httpdocs/legacy/ <Directory /var/www/vhosts/example.com/subdomains/dev/httpdocs> Order deny,allow Allow from all RewriteEngine On RewriteCond %{SERVER_PORT} 80 RewriteRule ^(.*)$ https://dev.example.com/$1 [R,L] </Directory> This works. It isn't served by django, and the url redirects to https. However, it serves httpdocs/legacy instead of httpsdocs/legacy (where I have an .htaccess that prompts for auth.) Any idea of how I can manage this?

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  • HTTP Error 500.19 Internal Server Error

    - by Attilah
    I created and deployed a pretty simple WCF Service. but when accessing it from IE, I get this : HTTP Error 500.19 - Internal Server Error Description: The requested page cannot be accessed because the related configuration data for the page is invalid. Error Code: 0x80070005 Notification: BeginRequest Module: IIS Web Core Requested URL: http://localhost:80/ProductsService/ProductsService.svc Physical Path: C:\Users\Administrator\Documents\Visual Studio 2008\Projects\ProductsService\ProductsService\ProductsService.svc Logon User: Not yet determined Logon Method: Not yet determined Handler: Not yet determined Config Error: Cannot read configuration file Config File: \\?\C:\Users\Administrator\Documents\Visual Studio 2008\Projects \ProductsService\ProductsService\web.config Config Source: -1: 0: More Information... This error occurs when there is a problem reading the configuration file for the Web server or Web application. In some cases, the event logs may contain more information about what caused this error. here is the content of my web.config file : <?xml version="1.0" encoding="utf-8" ?> <configuration> <configSections> <section name="dataConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings, Microsoft.Practices.EnterpriseLibrary.Data, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" /> </configSections> <dataConfiguration defaultDatabase="AdventureWorksConnection" /> <connectionStrings> <add name="AdventureWorksConnection" connectionString="Database=AdventureWorks; Server=(localhost)\SQLEXPRESS;Integrated Security=SSPI" providerName="System.Data.SqlClient" /> </connectionStrings> <system.serviceModel> <services> <service name="Products.ProductsService"> <endpoint address="" binding="basicHttpBinding" contract="Products.IProductsService" /> </service> </services> </system.serviceModel> </configuration>

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  • How to create database records for a financial year

    - by David A Gibson
    Hello, I need to create entities (specifically contracts) in a database table that are associated with a financial year. These contracts will be applied to projects. Any contract variation will be recorded by creating a new contract record for the same financial year but the original will remain associated with the project as a history. The projects can last several years and so at any one time a project will have a live contract record for each year as well as any number of historic contracts for that year. All of which is incidental but I'm trying to provide some context. If the contracts where for the year - it would be easy and I'd just store the Year either as a date field with the 1st of January or just an Integer. However the contracts run for financial years and I don't know how to approach this. I don't want a separate table containing the financial years as I don't want the users to have to maintain this. I don't want to store the financial year as a string "2009/2010" as this is not ideal for sorting/extracting the data. Any ideas will be helpful, my best so far is to have starting and ending year in 2 columns and just "KNOW" that starting is April of the year etc Thanks

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  • PHP - Database schema: version control, branching, migrations.

    - by Billiam
    I'm trying to come up with (or find) a reusable system for database schema versioning in php projects. There are a number of Rails-style migration projects available for php. http://code.google.com/p/mysql-php-migrations/ is a good example. It uses timestamps for migration files, which helps with conflicts between branches. General problem with this kind of system: When development branch A is checked out, and you want to check out branch B instead, B may have new migration files. This is fine, migrating to newer content is straight forward. If branch A has newer migration files, you would need to migrate downwards to the nearest shared patch. If branch A and B have significantly different code bases, you may have to migrate down even further. This may mean: Check out B, determine shared patch number, check out A, migrate downwards to this patch. This must be done from A since the actual applied patches are not available in B. Then, checkout branch B, and migrate to newest B patch. Reverse process again when going from B to A. Proposed system: When migrating upwards, instead of just storing the patch version, serialize the whole patch in database for later use, though I'd probably only need the down() method. When changing branches, compare patches that have been run to patches that are available in the destination branch. Determine nearest shared patch (or oldest difference, maybe) between db table of run patches and patches in destination branch by ID or hash. Could also look for new or missing patches that are buried under a number of shared patches between the two branches. Automatically merge down to the nearest shared patch, using the db table stored down() methods, and then merge up to the branche's latest patch. My question is: Is this system too crazy and/or fraught with consequences to bother developing? My experience with database schema versioning is limited to PHP autopatch, which is an up()-only system requiring filenames with sequential IDs.

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  • jQuery Equal Height Divs

    - by griegs
    If i have the following harkup; <div> <div> <div id='sameHeight'>One<br>two<br>three</div> <div id='sameHeight'>four</div> <div id='sameHeight'>five</div> <div> <div> <div id='sameHeight'>four</div> <div id='sameHeight'>six</div> <div id='sameHeight'>seven<br>eight</div> <div> </div> How can I ensure that all divs marked as "sameHeight" are the same height as their counterparts in the other div? I had a look at equalHeights plugin but that assumes all divs side by side are in the same parent. I need one that can either traverse parents or allow me to specify parents. Is there such a thing or do I need to write it?

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  • Delphi, PGDac vs Zeos, Fetch, Lookup?

    - by durumdara
    Hi! I used Zeos to test to know: is ZTable uses fetch technics, or not? May in the future we migrate our lesser system to PGSQL, and this used now "Table" components (as BDE, but it have an SQL-like server). These tables use real cursors, a "Window" with N record, so lookup is very fast, because the Locate/Lookup is started on server, and only these N records are refreshed, no matter, how many records in the lookup table. PGSQL uses fetch technics as I know, and I tested it with a table (id int, name varchar(100)), and 1 million records. (I also trying this with mysql). The adapter is Zeos. ID, sec to find, allocated memory in bytes on client. MySQL 500000 2,761 113 196 344 1000000 3,214 225 471 232 313800 0,437 225 471 232 328066 0,468 225 471 232 276374 0,390 225 471 232 905984 1,264 225 471 232 260253 0,359 225 471 232 PGSQL 500000 3,042 113 188 184 1000000 3,744 225 463 064 313800 0,436 225 463 064 328066 0,452 225 463 064 276374 0,375 225 463 064 905984 1,295 225 463 064 260253 0,359 225 463 064 142023 0,203 225 463 064 As you see the records are fetched locally, this cause the 225 MB usage, and searches are slow a little, based where is the record we must find. I want to ask more things: a.) Is PGDAC have some technics to we can use the lookups without pay the fetch with memory and secs? b.) Or is PG ODBC driver can help in this problem with ADO? (As I know ADO can use server side cursors)? c.) Have anybody some experience with lookup tables, and performance? Is this critical question or it is not? (With client memory usage too). d.) If no chance to avoid fetch hell with lookups, what we can do? Server Side Joins, and unique code for Lookup field changing without real Lookup? Thanks for your help: dd

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  • MVC2 Client Validation isn't working when getting form from ajax call

    - by devlife
    I'm trying to use MVC2 client-side validation in a partial view that is rendered via $.get. However, the client validation isn't working. I'm not quite sure what the deal is. [Required(ErrorMessage = "Email is required")] public string Email { get; set; } <% using ( Ajax.BeginForm( new AjaxOptions { Confirm = "You sure?" } ) ) { %> <%: Html.TextBoxFor( m => m.Email, new { @class = "TextBox150" } )%> <%= Html.ValidationMessageFor( m => m.Email )%> <input type="submit" value="Add/Save" style="float: right;" /> <% } %> I'm not doing anything special to render the the partial view. Just putting the html into a div and showing it in a modal popup. On a side note, does anyone know if it's possible to submit the form with client validation without a submit button?

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  • Retrieving saved checkboxes' name and values from database

    - by sermed
    I have a form with checkboxes, each one has a value. When the registered user select any checkbox the value is incremented (the summation) and then then registred user save his selection of checkbox if he satisfied with the result of summation into database all this work fine ...i want to enable the registred user to view his selection history by retriving and displaying the checkboxes he selected in a page with thier values ... How I can do that? I'm just able to save the selected checkboxes as choice 1, choice 2, for example .. I want to view the selected checkboxes that is saved in database as the appear in the page when the user first select them: for example if the registred user selects these 3 options LEAD DEEP KEEL (1825) FULLY BATTENED MAINSAIL (558) TEAK SIDE DECKS (2889) They will be saved as for example (choice1, choice2, choice3). But if he want to view selected checkboxes the appear exactly as first he selects them: LEAD DEEP KEEL (1825) FULLY BATTENED MAINSAIL (558) TEAK SIDE DECKS (2889) This is my user table: $query="CREATE TABLE User( user_id varchar(20), password varchar(40), user_type varchar(20), firstname varchar(30), lastname varchar(30), street varchar(50), city varchar(50), county varchar(50), post_code varchar(10), country varchar(50), gender varchar(6), dob varchar(15), tel_no varchar(50), vals varchar(50), email varchar(50))"; and the code to inser the options selected to database <?php include("databaseconnection.php"); $str = ''; foreach($_POST as $key => $val) if (strpos($key,'choice') !== false) $str .= $key.','; $query = "INSERT INTO User (vals) VALUES('$str')"; $result=mysql_query($query,$conn); if ($result) { (mysql_error(); } else { echo " done"; } ?> And this is my form: function checkTotal() { document.listForm.total.value = ''; var sum = 0; for (i=0;i <form name="listForm" method="post" action="insert_options.php" > <TABLE cellPadding=3 width=600 border=0> <TBODY> <TR> <TH align=left width="87%" bgColor=#b0b3b4><SPAN class=whiteText>Item</SPAN></TH> <TH align=right width="13%" bgColor=#b0b3b4><SPAN class=whiteText>Select</SPAN></TH></TR> <TR> <TD bgcolor="#9da8af"colSpan=2><SPAN class=normalText><B>General</B></SPAN></TD></TR> <TR> <TD bgcolor="#c4c8ca"><SPAN class=normalText >TEAK SIDE DECKS (2889)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="2889" type="checkbox" onchange="checkTotal()" /></TD></TR> <TR> <TD bgColor=#c4c8ca><SPAN class=normalText>LEAD DEEP KEEL (1825)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="1825" type="checkbox" onchange="checkTotal()"></TD></TR> <TR> <TD bgColor=#c4c8ca><SPAN class=normalText>FULLY BATTENED MAINSAIL (558)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="558" type="checkbox" onchange="checkTotal()"></TD></TR> <TR> <TD bgColor=#c4c8ca><SPAN class=normalText>HIGH TECH SAILS FOR CONVENTIONAL RIG (1979)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="1979" type="checkbox" onchange="checkTotal()"></TD></TR> <TR> <TD bgColor=#c4c8ca><SPAN class=normalText>IN MAST REEFING WITH HIGH TECH SAILS (2539)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="2539" type="checkbox" onchange="checkTotal()"></TD></TR> <TR> <TD bgColor=#c4c8ca><SPAN class=normalText>SPlNNAKER GEAR (POLE LINES DECK FITTINGS) (820)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="820" type="checkbox" onchange="checkTotal()"></TD></TR> <TR> <TD bgColor=#c4c8ca><SPAN class=normalText>SPINNAKER POLE VERTICAL STOWAGE SYSTEM (214)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="214" type="checkbox" onchange="checkTotal()"></TD></TR> <TR> <TD bgColor=#c4c8ca><SPAN class=normalText>GAS ROD KICKER (208)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="208" type="checkbox" onchange="checkTotal()"></TD></TR> <TR> <TD bgColor=#c4c8ca><SPAN class=normalText>SIDE RAIL OPENINGS (BOTH SIDES) (392)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="392" type="checkbox" onchange="checkTotal()"></TD></TR> <TR> <TD bgColor=#c4c8ca><SPAN class=normalText>SPRING CLEATS MIDSHIPS -ALUMIMIUM (148)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="148" type="checkbox" onchange="checkTotal()"></TD></TR> <TR> <TD bgColor=#c4c8ca><SPAN class=normalText>ELECTRIC ANCHOR WINDLASS (1189)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="1189" type="checkbox" onchange="checkTotal()"> </TD></TR> <TR> <TD bgColor=#c4c8ca><SPAN class=normalText>ANCHOR CHAIN GALVANISED (50m) (202)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="202" type="checkbox" onchange="checkTotal()"> </TD></TR> <TR> <TD bgColor=#c4c8ca><SPAN class=normalText>ANCHOR CHAIN GALVANISED (50m) (1141)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="1141" type="checkbox" onchange="checkTotal()"></TD></TR> <TR> <TD bgcolor="#9da8af"colSpan=2><SPAN class=normalText><B>NAVIGATION & ELECTRONICS</B></SPAN></TD></TR> <TR> <TD bgcolor="#c4c8ca"><SPAN class=normalText >WIND VANE (STAINLESS STEEL)(41)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="41" type="checkbox" onchange="checkTotal()" /></TD></TR> <TR> <TD bgColor=#c4c8ca><SPAN class=normalText>RAYMARINE ST6O LOG & DEPTH (SEPARATE UNITS)(226)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="226" type="checkbox" onchange="checkTotal()"></TD></TR> <TR> <TD bgcolor="#9da8af"colSpan=2><SPAN class=normalText><B>ENGINES & ELECTRICS</B></SPAN></TD></TR> <TR> <TD bgColor=#c4c8ca><SPAN class=normalText>SHORE SUPPLY (220V) WITH 3 OUTLETS (EXCLUDJNG SHORE CABLE) (327)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="327" type="checkbox" onchange="checkTotal()"></TD></TR> <TR> <TD bgColor=#c4c8ca><SPAN class=normalText>3rd BATTERY(14OA/H)(196)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="196" type="checkbox" onchange="checkTotal()"></TD></TR> <TD bgColor=#c4c8ca><SPAN class=normalText>24 AMP BATTERY CHARGER (475)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="475" type="checkbox" onchange="checkTotal()"></TD></TR> <TD bgColor=#c4c8ca><SPAN class=normalText>2 BLADED FOLDING PROPELLER (UPGRADE)(299)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="299" type="checkbox" onchange="checkTotal()"></TD></TR> <TR> <TD bgcolor="#9da8af"colSpan=2><SPAN class=normalText><B>BELOW DECKS/DOMESTIC</B></SPAN></TD></TR> <TD bgColor=#c4c8ca><SPAN class=normalText>WARM WATER (FROM ENGINE & 220V)(749)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="749" type="checkbox" onchange="checkTotal()"></TD></TR> <TD bgColor=#c4c8ca><SPAN class=normalText>SHOWER IN AFT HEADS WITH PUMPOUT(446)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="446" type="checkbox" onchange="checkTotal()"></TD></TR> <TD bgColor=#c4c8ca><SPAN class=normalText>DECK SUCTION DISPOSAL FOR HOLDINGTANK(166)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="166" type="checkbox" onchange="checkTotal()"></TD></TR> <TD bgColor=#c4c8ca><SPAN class=normalText>REFRIGERATED COOLBOX (12V)(666)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="666" type="checkbox" onchange="checkTotal()"></TD></TR> <TD bgColor=#c4c8ca><SPAN class=normalText>LFS SAFETY PACKAGE (COCKPIT HARNESS POINTS STAINLESS STEEL JACKSTAYS)(208)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="208" type="checkbox" onchange="checkTotal()"></TD></TR> <TD bgColor=#c4c8ca><SPAN class=normalText>UPHOLSTERY UPGRADE IN SALOON (SUEDETYPE)(701)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="701" type="checkbox" onchange="checkTotal()"></TD></TR> <TR> <TD bgcolor="#9da8af"colSpan=2><SPAN class=normalText><B>NAVIGATION ELECTRONICS & ELECTRICS</B></SPAN></TD></TR> <TD bgColor=#c4c8ca><SPAN class=normalText>VHF RADIO AERIAL CABLED TO NAVIGATION AREA(178)</SPAN></TD> <TD align=right bgColor=#c4c8ca><input name="choice" value="178" type="checkbox" onchange="checkTotal()"></TD></TR> </table>

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  • Are lambda expressions/delegates in C# "pure", or can they be?

    - by Bob
    I recently asked about functional programs having no side effects, and learned what this means for making parallelized tasks trivial. Specifically, that "pure" functions make this trivial as they have no side effects. I've also recently been looking into LINQ and lambda expressions as I've run across examples many times here on StackOverflow involving enumeration. That got me to wondering if parallelizing an enumeration or loop can be "easier" in C# now. Are lambda expressions "pure" enough to pull off trivial parallelizing? Maybe it depends on what you're doing with the expression, but can they be pure enough? Would something like this be theoretically possible/trivial in C#?: Break the loop into chunks Run a thread to loop through each chunk Run a function that does something with the value from the current loop position of each thread For instance, say I had a bunch of objects in a game loop (as I am developing a game and was thinking about the possibility of multiple threads) and had to do something with each of them every frame, would the above be trivial to pull off? Looking at IEnumerable it seems it only keeps track of the current position, so I'm not sure I could use the normal generic collections to break the enumeration into "chunks". Sorry about this question. I used bullets above instead of pseudo-code because I don't even know enough to write pseudo-code off the top of my head. My .NET knowledge has been purely simple business stuff and I'm new to delegates and threads, etc. I mainly want to know if the above approach is good for pursuing, and if delegates/lambdas don't have to be worried about when it comes to their parallelization.

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  • If I wanted to make a Pac-Man Game?

    - by SoulBeaver
    I am immediately placing this as a community wiki thing. I don't want to ask for help in programming yet or have even a specific question about programming, but rather the process and the resources needed to make such a game. To put it simply: My college friend and I decided to give ourselves a really big challenge to further our skills in programming. In six months time we want to show ourselves a Pac-Man game. Pac-Man will be AI-controlled like the Ghosts and whichever Pac-Man lives the longest after a set of tries wins. This isn't like anything we've done so far. The goal here, for me, isn't to create a perfect game, but to try and complete it, learn a whole bunch in the process. Even if I don't finish in the time, which is a good possibility, I would want to have at least tried this. So my question is this: How should I start preparing myself? I already have started vector math, matrices, all that fun stuff. My desired platform would be DirectX 9.0c; is that advisable? Keep in mind that this is not a preference just for this project, but I wish to have some kind of future in graphics develepment, so I want to pick a platform that is future-safe. As for the game development in general, what should I take into consideration? I have never done a real game before, so any and all advise to development of mid-scale projects( if this would be a mid-scale project ) is greatly appreciated. My main concerns are the pit-falls and demotivators. Sorry if the question is so vague. If it doesn't belong here, then I will remove it. Otherwise, any and all advise regarding making larger projects is greatly appreciated.

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  • How does a java web project architecture look like without EJB3 ?

    - by Hendrik
    A friend and I are building a fairly complex website based on java. (PHP would have been more obvious but we chose for java because the educational aspect of this project is important to us) We have already decided to use JSF (with richfaces) for the front end and JPA for the backend and so far we have decided not to use EJB3 for the business layer. The reason we've decided not to use EJB3 is because - and please correct me if I am wrong - if we use EJB3 we can only run it on a full blown java application server like jboss and if we don't use EJB3 we can still run it on a lightweight server like tomcat. We want to keep speed and cost of our future web server in mind. So far i've worked on two JEE projects and both used the full stack with web business logic factories/persistence service entities with every layer a seperate module. Now here is my question, if you dont use EJB3 in the business logic layer. What does the layer look like? Please tell what is common practice when developing java web projects without ejb3? Do you think business logic layer can be thrown out altogether and have business logic in the backing beans? If you keep the layer, do you have all business methods static? Or do you initialize each business class as needed in the backing beans in every session as needed?

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  • Grouped UITableView Footer Sometimes Hidden On Quick Scroll

    - by jdandrea
    OK, this one is a puzzler. There is one similar post but it's not similar enough to count, so I'm posting this one. :) I've got a grouped UITableView with a header and footer. The footer includes two UIButton views, side-by-side. Nothing major. Now … there is a toggle button in a UIToolbar at the bottom for more/less info in this table view. So I build my index paths to delete/insert with fade row animation, all the usual ingredients, sandwiched between beginUpdates and endUpdates calls on the UITableView … and this works fine! In also happens that my footer can sometimes be pushed off past the bottom of the display. Here's where it gets weird. If I drag my finger up the display, scrolling the view upward, I should see that footer eventually, right? Well … most of the time I do. BUT, if I flick my finger up, for a faster scroll, the footer is missing. Even if you try to tap in that area - no response. However, if I scroll back down again, just to hide that footer (or rather hide the area where the footer would normally be), and then scroll back up, it's there once again! This only happens when inserting rows. If I delete rows, the footer stays put … unless of course it was already hidden and I didn't perform the aforementioned incantation to get it back. :) I am trying to trace through this, but to no avail. I suppose tracing through scroll operations is a bit of a crazy proposition! Perhaps some creative logging … suggestions, anyone? Or is this a known issue in 3.1 where row insert/deletes are concerned? (I don't recall seeing it until 3.1.)

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  • How To Generate Parameter Set for the Diffie-Hellman Key Agreement Algorithm in Android

    - by sebby_zml
    Hello everyone, I am working on mobile/server security related project. I am now stuck in generating a Diffie-Hellman key agreement part. It works fine in server side program but it is not working in mobile side. Thus, I assume that it is not compactible with Android. I used the following class to get the parameters. It returns a comma-separated string of 3 values. The first number is the prime modulus P. The second number is the base generator G. The third number is bit size of the random exponent L. My question is is there anything wrong with the code or it is not compactible for android?What kind of changes should I do? Your suggestion and guidance would be very much help for me. Thanks a lot in advance. public static String genDhParams() { try { // Create the parameter generator for a 1024-bit DH key pair AlgorithmParameterGenerator paramGen = AlgorithmParameterGenerator.getInstance("DH"); paramGen.init(1024); // Generate the parameters AlgorithmParameters params = paramGen.generateParameters(); DHParameterSpec dhSpec = (DHParameterSpec)params.getParameterSpec(DHParameterSpec.class); // Return the three values in a string return ""+dhSpec.getP()+","+dhSpec.getG()+","+dhSpec.getL(); } catch (NoSuchAlgorithmException e) { } catch (InvalidParameterSpecException e) { } return null; } Regards, Sebby

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  • Design suggestions for creating document management structure using hidden shares.

    - by focus.nz
    I need to add some document management functionality into my software. Documents will be grouped by company name and project name. The folders need to be accessed by the application using the id numbers of clients/projects, but also easily browsed by the end user using windows explorer. Clients and Projects will be stored in a database. I am thinking of having the software create the folders using the friendly name and then using a hidden share with the id number for the software to access the files. The folder structure would be something like this --Company 1 (Company-1234$) -- Project 101 (Project-101$) -- Project 102 (Project-102$) -- Project 103 (Project-103$) -- Company 2 (Company-5678$) -- Project 201 (Project-201$) -- Project 202 (Project-202$) -- Project 203 (Project-203$) So in the example above there would be a company called "Company 1" with a ID of "1234". When browsing the folders using windows explorer the user would see \\ServerName\Documents\Company1 and you could also access the same folder from \\ServerName\Documents\Company-1234$ By using the hidden share, if the company name changes or its renamed for some reason it doesn't break the link in the application because its using the hidden shared based on the ID that never changes. Will having hundreds (maybe thousands) or hidden shares on a server provide a huge performance hit? Does any one have any suggestions or alternatives to provide this feature?

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  • video calling (center)

    - by rrejc
    We are starting to develop a new application and I'm searching for information/tips/guides on application architecture. Application should: read the data from an external (USB) device send the data to the remote server (through internet) receive the data from the remote server perform a video call with to the calling (support) center receive a video call call from the calling (support) center support touch screens In addition: some of the data should also be visible through the web page. So I was thinking about: On the server side: use the database (probably MS SQL) use ORM (nHibernate) to map the data from the DB to the domain objects create a layer with business logic in C# create a web (WCF) services (for client application) create an asp.net mvc application (for item 7.) to enable data view through the browser On the client side I would use WPF 4 application which will communicate with external device and the wcf services on the server. So far so good. Now the problem begins. I have no idea how to create a video call (outgoing or incoming) part of the application. I believe that there is no problem to communicate with microphone, speaker, camera with WPF/C#. But how to communicate with the call center? What protocol and encoding should be used? I think that I will need to create some kind of server which will: have a list of operators in the calling center and track which operator is occupied and which operator is free have a list of connected end users receive incoming calls from end users and delegate call to free operator delegate calls from calling center to the end user Any info, link, anything on where to start would be much appreciated. Many thanks!

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  • How to move list items from two lists (from different areas) to one specific list by clicking the li

    - by pschorr
    I've been having some issues setting up a list of items and moving them between each other. Is it possible to have multiple lists, with a link inside each item to move it to a specified list? i.e. List of actions with a plus next to the action, click the plus and move to a specified box? Furthermore, would it be possible to then load a lightbox (code would have to be inline I'd guess) from that page and move those names to the specific list as well? Example Images Thanks much! More broad view of my efforts so far... The initial issue being that I could not use listboxes due to their being rendered natively inside each individual browser. Through listboxes I was able to set this up, but with a trigger via the code below (found on stackoverflow). While it gave me partial functionality it did not get the target I was looking for. document.getElementById('moveTrigger').onclick = function() { var listTwo = document.getElementById('secondList'); var options = document.getElementById('firstList').getElementsByTagName('option'); while(options.length != 0) { listTwo.appendChild(options[0]); } } I then moved onto jqueryui's sortable and it's ability to connect multiple, and most important, style-able lists and to be dragged between each other. This works for the side by side tables, but it does not offer the usability I was looking for overall. So, I've come to where I'm unsure as to where to move forward. While I can get around PHP, I wouldn't know where to start with this one personally. I'm open to any and all options! Thanks much!

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  • RIA: how to get functionality, not a data

    - by Budda
    On the server side I have the following class: public class Customer { [Key] public int Id { get; set; } public string FirstName { get; set; } public string SecondName { get; set; } public string FullName { get { return string.Concat(FirstName, " ", SecondName); } } } The problem is that each field is calculated and transferred to the client, for example 'FullName' property: [DataMember()] [Editable(false)] [ReadOnly(true)] public string FullName { get { return this._fullName; } set { if ((this._fullName != value)) { this.ValidateProperty("FullName", value); this.OnFullNameChanging(value); this._fullName = value; this.RaisePropertyChanged("FullName"); this.OnFullNameChanged(); } } } Instead of data transferring (that is traffic consuming, in some cases it introduces significant overhead). I would like to have a calculation on the client side. Is this possible without manual duplication of the property implementation? Thank you.

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  • Install MySQLdb on a Mac

    - by Youcha
    I have Python 32 bits, I installed MySQL Community server 32 bits and I'm trying to install MySQLdb for Python. I run easy_install mysql-python and I have this error > easy_install mysql-python Searching for mysql-python Reading http://pypi.python.org/simple/mysql-python/ Reading http://sourceforge.net/projects/mysql-python/ Reading http://sourceforge.net/projects/mysql-python Best match: MySQL-python 1.2.4b5 Downloading http://pypi.python.org/packages/source/M/MySQL-python/MySQL-python-1.2.4b5.zip#md5=4f645ed23ea0f8848be77f25ffe94ade Processing MySQL-python-1.2.4b5.zip Running MySQL-python-1.2.4b5/setup.py -q bdist_egg --dist-dir /var/folders/ke/ke8HKCuzGB4LMCJ1eIAGqk+++TI/-Tmp-/easy_install-W_yT0e/MySQL-python-1.2.4b5/egg-dist-tmp-GjLaFB Downloading http://pypi.python.org/packages/source/d/distribute/distribute-0.6.28.tar.gz Extracting in /var/folders/ke/ke8HKCuzGB4LMCJ1eIAGqk+++TI/-Tmp-/easy_install-W_yT0e/MySQL-python-1.2.4b5/temp/tmpOVVY_R Now working in /var/folders/ke/ke8HKCuzGB4LMCJ1eIAGqk+++TI/-Tmp-/easy_install-W_yT0e/MySQL-python-1.2.4b5/temp/tmpOVVY_R/distribute-0.6.28 Building a Distribute egg in /private/var/folders/ke/ke8HKCuzGB4LMCJ1eIAGqk+++TI/-Tmp-/easy_install-W_yT0e/MySQL-python-1.2.4b5 /private/var/folders/ke/ke8HKCuzGB4LMCJ1eIAGqk+++TI/-Tmp-/easy_install-W_yT0e/MySQL-python-1.2.4b5/distribute-0.6.28-py2.6.egg unable to execute gcc-4.0: No such file or directory error: Setup script exited with error: command 'gcc-4.0' failed with exit status 1 Any idea on why gcc-4.0 cannot be found? I have Xcode and gcc 4.2.1 installed.

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  • Having a Python package install itself under a different name

    - by cool-RR
    I'm developing a package called garlicsim. (Website.) The package is intended for Python 2.X, but I am also offerring Python 3 support on a different fork called garlicsim_py3.(1) So both of these packages live side by side on PyPI, and Python 3 users install garlicsim_py3, and Python 2 users install garlicsim. The problem is: When third party modules want to use garlicsim, they should have one package name to refer to, not two. Sure, they can do something like this: try: import garlicsim except ImportError: import garlicsim_py3 as garlicsim But I would prefer not to make the developers of these modules do this. Is there a way that garlicsim_py3 will install itself under the alias garlicsim? What I want is for a Python 3 user to be able to import garlicsim and refer to the module all the time as garlicsim, but that it will really be garlicsim_py3. I know that the Distribute project does something like this: They make it so you can import setuptools and it will be redirected into their code. I have no idea how they do it. Any ideas? (1) I've reached the decision to support Python 3 on a fork instead of in the same code base; It's important for me that the code base will be clean, and I would really not want to introduce compatibilty hacks.

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  • How to build Graceful Degradation AJAX web page?

    - by Morgan Cheng
    I want to build web page with "Graceful Degradation". That is, the web page functions even javascript is disabled. Now I have to make design decision on the format of AJAX response. If javascript is disabled, each HTTP request to server will generate HTML as response. The browser refreshes with the returned HTML. That's fine. If javascript is enabled, each AJAX HTTP request to server will generate ... well, JSON or HTML. If it is HTML, it is easy to implement. Just have javascript to replace part of page with the returned HTML. And, in server side, not much code change is needed. If it is JSON, then I have to implement JSON-to-html logic in javascript again which is almost duplicate of server side logic. Duplication is evil. I really don't like it. The benefit is that the bandwidth usage is better than HTML, which brings better performance. So, what's the best solution to Graceful Degradation? AJAX request better to return JSON or HTML?

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  • Boost::Mutex & Malloc

    - by M. Tibbits
    Hi all, I'm trying to use a faster memory allocator in C++. I can't use Hoard due to licensing / cost. I was using NEDMalloc in a single threaded setting and got excellent performance, but I'm wondering if I should switch to something else -- as I understand things, NEDMalloc is just a replacement for C-based malloc() & free(), not the C++-based new & delete operators (which I use extensively). The problem is that I now need to be thread-safe, so I'm trying to malloc an object which is reference counted (to prevent excess copying), but which also contains a mutex pointer. That way, if you're about to delete the last copy, you first need to lock the pointer, then free the object, and lastly unlock & free the mutex. However, using malloc to create a boost::mutex appears impossible because I can't initialize the private object as calling the constructor directly ist verboten. So I'm left with this odd situation, where I'm using new to allocate the lock and nedmalloc to allocate everything else. But when I allocate a large amount of memory, I run into allocation errors (which disappear when I switch to malloc instead of nedmalloc ~ but the performance is terrible). My guess is that this is due to fragmentation in the memory and an inability of nedmalloc and new to place nice side by side. There has to be a better solution. What would you suggest?

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  • Which is a good way to maintain resources for Internationalization in .Net

    - by ashtee
    I have thought of three approaches to create and maintain resources in .Net projects for WinForms using Visual Studio 2008. (I am sure there should be more than three ways.) I need to decide on one before starting to implement internationalization for our product. Have individual sets of resource files (resx) for each windows form or piece of UI (a custom control) in each .net project. These are auto generated by Visual Studio when Localizable property is set to true in the form or control properties. Have one resource file per .net project. This is added manually and updated manually with the resource strings and messages. Have one resource manager project that has resources for all the components for a set of .net projects. Personally, I do not like the first approach as it creates numerous resources files. The only advantage we get in this approach is that we do not need to set text in UI elements manually. I like second and third approach as they are easy to maintain and there is only one set of resources that you need to handle. So no duplication of strings and messages. Easy for the translators also. What are your thoughts? Please share.

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