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• Version control for PHP Developement

  - by Vinod Mohan

  Hello, I have been hearing a lot about the advantages of using a version control system and would like to try one. I was doing freelance web development in PHP for the past 2 years, two months back I hired two more programmer to help me. I will be hiring one more person soon. We maintain 4 websites, all of which are my own, which are continuously being edited by one of us. I learned PHP by myself and have never worked in any other firms. Hence I am new to version control, unit testing and all. Currently, we have development servers on our workstations. When we edit a particular section of a site, we download the code for that particular section (say /news/ or /movies/ or /wallpapers/ ) from the production server to the dev server, makes the changes locally and uploads to the production server (no code review / testing). Because of this, our dev server is always out of date from our prod server. Occasionally, this also create problem when one of us forgets to download the latest copy from prod and overwrites the last change. I know this is very very foolish, but currently our prod server is the only copy that has all the updates and latest changes. Can anyone please suggest which is the best version control system for me? I am more interested in distributed version control, since we don't have a central backup for all our code. I read about Mercurial and Git and found that Mercurial is used in several large open source projects by Mozilla, Sun, Symbian etc. So which one do you think is better for me? Not only version control, if there are any other package that I can use to make my current setup better, please mention that too :) Thanks and Regards, Vinod Mohan

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• How to refactor this database to allow sync. with smart clients?

  - by Anton Zvgny

  Howdy, I have inherited the following database: http://i46.tinypic.com/einvjr.png (EDIT: I cannot post images, so here goes the link) This currently runs 100% online thru an Asp.Net web app , but some employees will need to have offline access to this database to either get documents or to insert new documents for later synchronization when back to the office. What changes need to be made to this database scheme to support such scenario (sync smart clients with central web database)? Thanks! ps. I'm not an developer/dba, i'm just an mechanic engineer tasked with changing this app, so, take it easy on me :D ps1. We're using MSSQL Server for the online central database and MSSQL Compact for the smart client. ps2. the ImageGuid field of the images table is used to save the images to the file system. The web app takes the guid and create folders according to the first 3 initial letters to persist the image to the file system. ps3. The users of the smart client not always get server data first and then go modifying to sync later the changes. Most of the time they start working completely offline (with a blank local database) and later sync the data to the server. ps4. All the users of the smart client app have an account at the web app.

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• Versions. "Is not a working copy"

  - by bartclaeys

  A little background first: I'm a designer/developer and decided to use subversion for a personal project. I'm the only one working on this project. I've setup a Beanstalk account and installed Versions on Mac. Locally I have MySQL and PHP running through MAMP. What I want to do is develop locally and push code into Beanstalk. I'm not planning on deploying from Beanstalk to my live server at this moment. In Beanstalk I created a repository and imported all my code. I then installed Versions and added a bookmark to the Beanstalk repository. So far so good. Next I guess (this is a wild guess) I need to add a so called 'working copy bookmark' so that Versions can watch my local copy for changes and commit it to my Beanstalk repository. Problem: When I click 'Create working copy bookmark' in Versions and I select a folder on my computer I get the error: '/Applications/MAMP/www_mydomain' is not a working copy' I have no clue what that means and now I'm stuck. How can I tell Versions to keep track of changes of a local folder?

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• How to Write to a User.Config file through ConfigurationManager?

  - by Josh G

  I'm trying to persist user settings to a configuration file using ConfigurationManager. I want to scope these settings to the user only, because application changes can't be saved on Vista/Win 7 without admin privileges. This seems to get me the user's configuration, which appears to be saved here in Win 7 ([Drive]:\Users\[Username]\AppData\Local\[ApplicationName]\[AssemblyName][hash]\[Version\) Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.PerUserRoamingAndLocal); Whenever I try to save any changes at all to this config I get this exception: InnerException: System.InvalidOperationException Message="ConfigurationSection properties cannot be edited when locked." Source="System.Configuration" StackTrace: at System.Configuration.SectionInformation.VerifyIsEditable() at System.Configuration.MgmtConfigurationRecord.GetConfigDefinitionUpdates(Boolean requireUpdates, ConfigurationSaveMode saveMode, Boolean forceSaveAll, ConfigDefinitionUpdates& definitionUpdates, ArrayList& configSourceUpdates) I have tried adding a custom ConfigurationSection to this config. I have tried adding to the AppSettingsSection. Whenever I call config.Save() it throws the exception above. Any ideas? I tried using the ApplicationSettingsBase class through the Project-Settings designer, but it doesn't appear that you can save custom types with this. I want similar functionality with the ability to save custom types. Thanks.

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• MVC: capture route url's and pass them to javascript function

  - by Tim Geerts

  Short:Is there a way to have a route-definition that will pass the "CONTROLLER/ACTION" string value to a javascript function in stead of actually going straight for the controller action? More:I have a masterpage which contains the navigation of the site. Now, all the pages need this navigation wrapped around it at all times, but because I didn't want the navigation to constantly load with each pagecall, I changed all my pages to partialviews. These partial views are loaded via the JQuery.Load() method whenever a menu item is clicked in the navigation. This all worked very good, up till now because I noticed it's also a requirement of the website to be able to link directly to page X, rather then default.aspx. So, as an example:The main page is my "default.aspx" page, this utilizes my master page with the nagivation around it. And each call to a new page uses a javascript function that loads that particular partial view inside a div that is known in my masterpage. So, the url never changes away from "default.aspx", but my content changes seemlesly. The problem is, those url's also need to be available when typed directly into the address bar. But, they're partial views, so loading them directly from the address bar makes them display without any masterpages around them. Therefore my question if it might be possible to capture the route typed into the address bar and pass that on to my javascript function that will load that route in the content div. (I hope I explained it ok enough, if not, feel free to ask more information)

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• Workaround for basic syntax not being parsed.

  - by Mark Tomlin

  I want to have a class property that allow for an expression to take place on the right side of the equals sign. All versions of PHP choke on the following code, but it is written in this way to allow for easier extendibility in the future. /* Example SDK Class */ class SDK { /* Runtime Option Flags */ // Strings # 0: Makes no change to the strings. var $STRING_NONE = (1 << 0); # 1: Removes color codes from the string. var $STRING_STRIP_COLOR = (1 << 1); # 2: Removes language codes from the string. var $STRING_STRIP_LANG = (1 << 2); # 3: Removes all formatting from the string. var $STRING_STRIP = SELF::STRING_STRIP_COLOR & SELF::STRING_STRIP_LANG; # 4: Converts color codes to HTML & UTF-8. var $STRING_HTML = (1 << 3); # 8: Converts color codes to ECMA-48 escape color codes & UTF-8. var $STRING_CONSOLE = (1 << 4); # 16: Changes player names only. var $STRING_NAMES = (1 << 5); # 32: Changes host names only. var $STRING_HOSTS = (1 << 6); function SDK($fString = SELF::STRING_HTML & SELF::STRING_NAMES & SELF_HOST) { // constructor code. } } $SDK &= new SDK(SDK::STRING_NONE); (1 << 0) seems like very basic syntax to me, and is not fathomable why PHP would not allow for such a thing. Can anyone think of a work around that would maintain readability and future expandability of the following code?

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• git stash blunder:

  - by Chirag Patel

  I did a git stash pop and ended up with merge conflicts. I removed the files from the file system and did a git checkout as shown below, but it thinks the files are still unmerged. I then tried replacing the files and doing a git checkout again and same result. I event tried forcing it with -f flag. Any help would be appreciated! chirag-patels-macbook-pro:haloror patelc75$ git status app/views/layouts/_choose_patient.html.erb: needs merge app/views/layouts/_links.html.erb: needs merge # On branch prod-temp # Changes to be committed: # (use "git reset HEAD <file>..." to unstage) # # modified: db/schema.rb # # Changed but not updated: # (use "git add <file>..." to update what will be committed) # (use "git checkout -- <file>..." to discard changes in working directory) # # unmerged: app/views/layouts/_choose_patient.html.erb # unmerged: app/views/layouts/_links.html.erb chirag-patels-macbook-pro:haloror patelc75$ git checkout app/views/layouts/_choose_patient.html.erb error: path 'app/views/layouts/_choose_patient.html.erb' is unmerged chirag-patels-macbook-pro:haloror patelc75$ git checkout -f app/views/layouts/_choose_patient.html.erb warning: path 'app/views/layouts/_choose_patient.html.erb' is unmerged

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• Throughput; capacity planning help for C10K like design

  - by z8000

  I am designing a network service in which clients connect and stay connected -- the model is not far off from IRC less the s2s connections. I could use some help understanding how to do capacity planning, in particular with the system resource costs associated with handling messages from/to clients. There's an article that tried to get 1 million clients connected to the same server [1]. Of course, most of these clients were completely idle in the test. If the clients sent a message every 5 seconds or so the system would surely be brought to its knees. But... How do you do less hand-waving and you know, measure such a breaking point? We're talking about messages being sent by a client over a TCP socket, into the kernel, and read by an application. The data is shuffled around in memory from one buffer to another. Do I need to consider memory throughput ("5 GT/s" [2], etc.)? I'm pretty sure I have the ability to measure the basic memory requirements due to TCP/IP buffers, expected bandwidth, and CPU resources required to process messages. I'm a little dim on what I'm calling "thoughput". Help! Also, does anyone really do this? Or, do most people sort of hand-wave and see what the real world offers, and then react appropriately? [1] http://www.metabrew.com/article/a-million-user-comet-application-with-mochiweb-part-3/ [2] http://en.wikipedia.org/wiki/GT/s

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• Migrateing to Windows Server 2008 R2 Domain Controllers - a few Questions/Issues

  - by Chris

  Ok so here's our setup: We have 2 Windows2k3 Domain Controllers. I am trying to replace them with Windows 2008 R2. The Win2k3 servers are DC01 and DC02. The Windows2k8 servers are DC1 and DC2. I prepared the Windows Server 2003 Forest Schema for a Domain Controller That Runs Windows Server 2008 or Windows Server 2008 R2. Then with both of the new servers up as member servers I dcpromo'd DC1 using the advanced option and added it successfully to my exisiting domain. Roles are GC, DNS and Active Directory Domain Services.I transferred The PDC, RID pool manager and Infrastructure master FSMO to the new DC.(DC1) The Schema master and Domain naming master are still on the old DC (DC01). The first issue I'm encountering is when i dcpromo the second DC (DC2) and select "Replicate data over the network from and existing domain controller" I select the new DC to replicate from (DC1) I get the following error: "Failed to identify the requested replica partner (dc1.xxx.org) as a valid domain controller with a machine account for (DC2$). This is likely due to either the machine account not being replicated to this domain controller because of replication latency or the domain controller not advertising the Active Directory Domain Services. Please consider retrying the operation with \dc01.xxx.org as the replica partner. "The server is unwilling to process the request." Is this because the Schema master and Domain naming master roles are still on the old DC (DC01)? And if so, if I transfer Schema master and Domain naming master roles to DC1 what is the risk or breaking my AD? I'm a little paranoid because this process HAS to be transparent. ANY down time or interruption will result in me getting a verbal ass kicking from my I.T. Director. Both of the new servers DNS point the the old DNS servers (DC01 and DC02) not themselves by the way. Thanks in Advance -Chris

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• Observer pattern and violation of Single Principality Rule

  - by Devil Jin

  I have an applet which repaints itself once the text has changed Design 1: //MyApplet.java public class MyApplet extends Applet implements Listener{ private DynamicText text = null; public void init(){ text = new DynamicText("Welcome"); } public void paint(Graphics g){ g.drawString(text.getText(), 50, 30); } //implement Listener update() method public void update(){ repaint(); } } //DynamicText.java public class DynamicText implements Publisher{ // implements Publisher interface methods //notify listeners whenever text changes } Isn't this a violation of Single Responsibility Principle where my Applet not only acts as Applet but also has to do Listener job. Same way DynamicText class not only generates the dynamic text but updates the registered listeners. Design 2: //MyApplet.java public class MyApplet extends Applet{ private AppletListener appLstnr = null; public void init(){ appLstnr = new AppletListener(this); // applet stuff } } // AppletListener.java public class AppletListener implements Listener{ private Applet applet = null; public AppletListener(Applet applet){ this.applet = applet; } public void update(){ this.applet.repaint(); } } // DynamicText public class DynamicText{ private TextPublisher textPblshr = null; public DynamicText(TextPublisher txtPblshr){ this.textPblshr = txtPblshr; } // call textPblshr.notifyListeners whenever text changes } public class TextPublisher implments Publisher{ // implements publisher interface methods } Q1. Is design 1 a SPR violation? Q2. Is composition a better choice here to remove SPR violation as in design 2.

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• Delphi Mock Wizard

  - by Todd

  Let me preface this by saying I'm fairly new to Unit Testing, Mocks, Stubs, Etc... I've installed Delphi-Mock-Wizard. When I select a unit and "Generate Mock", a new unit is created but it's very basic and not anything what I understand Mocks to be. unit Unit1; (** WARNING - AUTO-GENERATED MOCK! Change this unit if you want to, but be aware that any changes you make will be lost if you regenerate the mock object (for instance, if the interface changes). My advice is to create a descendent class of your auto-generated mock - in a different unit - and override things there. That way you get to keep them. Also, the auto-generate code is not yet smart enough to generate stubs for inherited interfaces. In that case, change your mock declaration to inherit from a mock implementation that implements the missing interface. This, unfortunately, is a violation of the directive above. I'm working on it. You may also need to manually change the unit name, above. Another thing I am working on. **) interface uses PascalMock, TestInterfaces; type IThingy = interface; implementation end. Looking at the source there seems to be quite a bit commented out. I'm wondering, has anyone gotten this to work? My IDE is D2010. Thanks.

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• What makes merging in DVCS easy?

  - by afriza

  I read at Joel on Software: With distributed version control, the distributed part is actually not the most interesting part. The interesting part is that these systems think in terms of changes, not in terms of versions. and at HgInit: When we have to merge, Subversion tries to look at both revisions—my modified code, and your modified code—and it tries to guess how to smash them together in one big unholy mess. It usually fails, producing pages and pages of “merge conflicts” that aren’t really conflicts, simply places where Subversion failed to figure out what we did. By contrast, while we were working separately in Mercurial, Mercurial was busy keeping a series of changesets. And so, when we want to merge our code together, Mercurial actually has a whole lot more information: it knows what each of us changed and can reapply those changes, rather than just looking at the final product and trying to guess how to put it together. By looking at the SVN's repository folder, I have the impression that Subversion is maintaining each revisions as changeset. And from what I know, Hg is using both changeset and snapshot while Git is purely using snapshot to store the data. If my assumption is correct, then there must be other ways that make merging in DVCS easy. What are those?

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• Static variables and long running thread on IIS 7.5

  - by Dmitry

  Hello people. Help me solve next problem. I have ASP .NET MVC2 application. I run it on IIS 7.5. In one page user clicks button and handler for this button sends request to server (jquery.ajax). At server action in controller starts new thread (it makes long time import): var thread = new Thread(RefreshCitiesInDatabase); thread.Start(); State of import is available in static variable. New thread changes value of variable in the begin of work. User can check state of import too with the help of this variable, which is used in view. And user sees import's state. When I start this function few minutes everything is okey. On page I see right state of import, quantity of imported records is changed, I see changes in logs. But after few minutes begin troubles. When I refresh page with import state sometimes I see that import is okey but sometimes I see page with default values about import (like application is just started), but after that again I can see page with normal import's state. I tried to attach Visual Studio to IIS process and debug application. But when request comes to controller sometimes static variables have right values and sometimes they have default values (static int has 0, static string has "" etc.). Tell me what I do wrong. May be I must start additional thread in other way? Thanks in advance, Dmitry

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• What's the lowest cost, legal, Microsoft server stack you can assemble?

  - by McKAMEY

  Assuming that you have an app infrastructure that generally only requires: ASP.NET MVC / C# / .NET Database or NoSQL data store (must be accessible from C#) Here's the challenge to you server gods: What is the least expensive configuration that will allow you to deploy to production in a way that doesn't break any licensing rules? In what ways does this solution differ from the "standard" Microsoft deployment scenario? Where does this solution's performance break down once the app begins to scale? I'm not concerned about the hardware, only the server software itself. I would love to hear about any solutions you've personally put into production. Especially if they are unique alternatives. For ideas, consider some of the possible variations, a) any Microsoft server solutions where they have lowered the barrier to entry to compete with OSS, or b) any OSS alternatives to Microsoft products which perform at a similar level. An example of a): SQL Server 2008 Express Edition SP1 is a 100% free version of SQL Server which will scale to the needs of many smaller / early stage applications. An example of b): running the Mono Framework on Linux. An example of differing from the "standard" stack: running Mono on Linux will require a completely different server OS familiarity. None of the Windows-based knowledge really transfers. An example of breaking down under scale: SQL Server Express will only scale to 1GB of memory and 4GB of disk storage. After that point, the application will need to move to one of the paid versions of SQL Server.

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• Web-based game in Python + Django and client browser polling

  - by ty

  I am creating a text-based game that implements a basic model in which multiple (10+) players interact with data and one moderator watches them and sets certain environmental statistics that affect gameplay. Recently I have begun to familiarize myself with Django. It seems to me that it would be an excellent tool for creating a game quickly, particularly because the nature of my game depends largely on sets of data (which lends itself quite well to a database). I am wondering how to "push" changes made by the game moderator to the players (for example, the moderator can decide to display an image to all players). The game is turn-based, not real-time, but certain messages need to be pushed out in roughly real-time. My thoughts: I could have each player's browser poll a status periodically (say, every 30 seconds) to see if there is a message from a moderator. But this forces a lag and means different players might receive it at different times. And reducing this interval to <10 seems like a bad idea for the server. Is there a better way to inform clients of changes? Would you suggest something other than using a web framework like Django? Thanks!

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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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• Red Hat server minimal install

  - by chmeee

  In a farm of virtualized Red Hat servers, there's the need to install a minimal system for security reasons. Minimal installs have serveral advantages (even no security related): Lees exposure to vulnerabilities (if you don't need it, don't install it) Better update process (less packages to update, less probability of breaking the system) Better performance (no unneeded daemons or processes) The less software you have the easier it is to harden the system Unfortunately, this is not easy because the "Minimal Installation" on Red Hat contains lots of unnecessary packages. There is an added challenge as the farm is running Oracle iAS. I've been told that iAS has dependencies with local graphical envieronment. So finally every server in the farm has gnome, X, etc. I've been searching the web and one solution seems to be making a kickstart script that will intall only the necessary packages. But I find this difficult and have several doubts about how to maintain the system dependencies afterwards. How do you install minimal Red Hat servers? Is it Ok to use kickstart or will I have dependency problems in the installation or in updates? Is there any way to avoid installing the graphical environment for iAS?

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• What privilege level is required on a Windows client workstation on an ActiveDomain to break file lo

  - by Mike Burton

  I'm not sure if I should be asking this here or on StackOverflow, but here goes: I'm part of a team maintaining a document management application, and I'm trying to figure out Windows file locking permissions. We use a utility somebody downloaded years ago called psunlock to remotely close all locks on a file. We recently discovered that this does not work across different domains on our VPN. A little bit of digging lead me to the samba manual's discussion of file locking. I still don't really "get it", though. Does anyone have any insight to share into how the process of locking and breaking locks on files works in a network context? My thinking is that privileges are required both on the file appliance and on the client workstations which hold locks. Is that accurate? Can anyone give a more specific version? Ideally I'm looking for something along the lines of A user must have privilege level X in order to break locks held from a client workstation. In practice I'd be happy with a hotlink to a good white paper on the subject.

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• Bound checkbox does not update its datasource.

  - by Scott Chamberlain

  I have a checkbox who's checked value is bound to a binding source which is bound to a boolean data table column. When I click my save button to push my changes in my data table to my sql server the value in the data table is never changed. Designer code. this.cbxKeepWebInfinityChanges = new System.Windows.Forms.CheckBox(); this.preProductionBindingSource = new System.Windows.Forms.BindingSource(); // // cbxKeepWebInfinityChanges // this.cbxKeepWebInfinityChanges.AutoSize = true; this.cbxKeepWebInfinityChanges.DataBindings.Add(new System.Windows.Forms.Binding("Checked", this.preProductionBindingSource, "WEBINFINTY_CHANGES", true, System.Windows.Forms.DataSourceUpdateMode.OnPropertyChanged)); this.cbxKeepWebInfinityChanges.Location = new System.Drawing.Point(6, 98); this.cbxKeepWebInfinityChanges.Name = "cbxKeepWebInfinityChanges"; this.cbxKeepWebInfinityChanges.Size = new System.Drawing.Size(152, 17); this.cbxKeepWebInfinityChanges.TabIndex = 30; this.cbxKeepWebInfinityChanges.Text = "Keep WebInfinity Changes"; this.cbxKeepWebInfinityChanges.UseVisualStyleBackColor = true; this.cbxKeepWebInfinityChanges.CheckedChanged += new System.EventHandler(this.CauseApplyChangesActivation); // // preProductionBindingSource // this.preProductionBindingSource.AllowNew = false; this.preProductionBindingSource.DataMember = "PreProduction"; this.preProductionBindingSource.DataSource = this.salesLogix; Save Code //the comments are the debugger values before the call in going from checked when loaded to unchecked when saved. private void btnApplyChanges_Click(object sender, EventArgs e) { (...) // non related saving logic for other controls preProductionBindingSource.EndEdit(); // checked = false, databinding = true, datatable = true preProductionTableAdapter.Update(salesLogix.PreProduction); // checked = false, databinding = true, datatable = true } After the saving code the box rechecks itself. The same things happens when going from unchecked to checked. does not save the change and reverts to the old value. Other items I have bound to the same data-binding source (I have two combo boxes) are updating correctly.

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• Refresh iFrame (Cache Issue)

  - by Ramiz Uddin

  We are getting a weird issue on which we are not sure what exactly cause it. Let me elaborate the issue. Suppose, we have two different html pages a.html and b.html. And a little script written in index.html: <html> <head> <script> function reloadFrame(iframe, src) { iframe.src = src; } </script> </head> <body> <form> <iframe id="myFrame"></iframe> <input type="button" value="Load a.html" onclick="reloadFrame(document.getElementById('myFrame'), 'a.html')"> <input type="button" value="Load b.html" onclick="reloadFrame(document.getElementById('myFrame'), 'b.html')"> </form> </body> </html> A server component is continuously updating both files a.html and b.html. The problem is the content of both files are successfully updating on the server side. If we open we can see the updated changes but client getting the older content which doesn't show the updated changes. Any idea?

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• WPF tree data binding

  - by Am

  Hi, I have a well defined tree repository. Where I can rename items, move them up, down, etc. Add new and delete. The data is stored in a table as follows: Index Parent Label Left Right 1 0 root 1 14 2 1 food 2 7 3 2 cake 3 4 4 2 pie 5 6 5 1 flowers 8 13 6 5 roses 9 10 7 5 violets 11 12 Representing the following tree: (1) root (14) (2) food (7) (8) flowers (13) (3) cake (4) (5) pie (6) (9) roeses (10) (11) violets (12) or root food cake pie flowers roses violets Now, my problem is how to represent this in a bindable way, so that a TreeView can handle all the possible data changes? Renaming is easy, all I need is to make the label an updatble field. But what if a user moves flowers above food? I can make the relevant data changes, but they cause a complete data change to all other items in the tree. And all the examples I found of bindable hierarchies are good for non static trees.. So my current (and bad) solution is to reload the displayed tree after relocation change. Any direction will be good. Thanks

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• Cross-platform and language (de)serialization

  - by fwgx

  I'm looking for a way to serialize a bunch of C++ structs in the most convenient way so that the serialization is portable across C++ and Java (at a minimum) and across 32bit/64bit, big/little endian platforms. The structures to be serialized just contain data, i.e. they're pure data objects with no state or behavior. The idea being that we serialize the structs into an octet blob that we can store in a database "generically" and be read out later on. Thus avoiding changing the database whenever a struct changes and also avoiding assigning each data member to a field - i.e. we only want one table to hold everything "generically" as a binary blob. This should make less work for developers and require less changes when structures change. I've looked at boost.serialize but don't think there's a way to enable compatibility with Java. And likewise for inheriting Serializable in Java. If there is a way to do it by starting with an IDL file that would be best as we already have IDL files that describe the structures. Cheers in advance!

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• Automatic Deployment to Multiple Production Environments

  - by Brandon Montgomery

  I want to update an ASP .NET web application (including web.config file changes and database scripts) to multiple production environments - ideally with the click of a button. I do not have direct network connectivity to any of them. I think this means the application servers will have to "pull" the information required for updating the application, and run a script to update the application that resides on the server. Basically, I need a way to "publish" an update, and the servers see that update and automatically download and run it. I've thought about possibly setting up an SFTP server for publishing updates, and developing a custom tool which is installed on production environments which looks at the SFTP server every day and downloads application files if they are available. That would at least get the required files onto the servers, and I could use xcopy/robocopy and Migrator.NET to deploy the updates. Still not sure about config file changes, but that at least gets me somewhere. Is there any good solution for this scenario? Are there any tools that do this for you?

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• .Net Architecture challenge: The Change-prone Frankestein Model

  - by SDReyes

  Good Morning SO! We've been scratching our heads with with this interesting scenario at the office, and we're anxious to hear your ideas and approaches: We have a database, whose schema is prone to changes -lets call it Prony-. (is used to store configuration parameters for embedded devices. so if the embedded devices guy need a new table, property or relationship for the model, he should be able to adapt the schema in a easy way -happens so often- ). Prony needs a web interface to create/edit its data. We have another database containing data that also need to be loaded to the devices, after making some transformations - lets call this one Oddy- (this data it's generated by an already existent administrative web application). Finally we have Tracy, a server that communicates our DBs and our embedded devices. She should to auto-adapt herself, to our dbs schema changes and serialize the data to the devices. Nice puzzle, don't think so? : ) Our current candidates: Rady: The fast Lets create some views in Prony that make the data transformation from Oddy. then use DynamicData (or some RAD tool) to create/update a simple web interface for Prony (so he can even consult the transformated data from coming from Prony : ). About Tracy, she will need to be recompiled to update her DB schema (Entity framework should work) and use Reflection to explore recursively the schema and serialize data. Cons: We would have to recompile Tracy and the Prony's web interface. What do you think of the candidate(s)? What would you do?

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• Need a less frustrating alternative to SVN

  - by hatingSVN

  It seems to me that whenever I try to do something in SVN, something messes up: Something as simple as renaming a directory would often cause an error of some sort when checking in the commit. Reverting changes to files, which was probably exactly what SVN was designed for, is incredibly error prone. Checking in a previous version is bound to blow up with some inconsistency error, and a series of unintuitive steps are required to correctly do it. Problems occur often and are usually extremely frustrating to fix. Fixing SVN problems for me involves countless attempts to commit a version of the code, getting an error, deleting the project, checking in the project, and repeat. It should be easy for multiple people to work on the project and commit changes. It is not. When you try to commit a file after someone else committed the same file, SVN is guaranteed to blow up. I haven't even mentioned branching and merging. No surprises here, merging is very prone to errors and the errors are difficult to correct. /rant What version control software best minimizes my frustrations?

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