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• Erlang, SSH and authorized_keys

  - by Roberto Aloi

  Playing with the ssh and public_key application in Erlang, I've discovered a nice feature. I was trying to connect to my running Erlang SSH daemon by using a rsa key, but the authentication was failing and I was prompted for a password. After some debugging and tracing (and a couple of coffees), I've realized that, for some weird reason, a non valid key for my user was there. The authorized_keys file contained two keys. The wrong one was at some point in the file, while the correct one was appended at the end of the file. Now, the Erlang SSH application, when diffing the provided key with the ones contained in the authorized_keys, it was finding the first entry (completely ignoring the second on - the correct one). Then, it was switching to different authentication mechanism (at first it was trying dsa instead of rsa and then it was prompting for a password). The question is: Is this behavior intended or should the SSH server check for multiple entries for the same user in the *authorized_keys* file? Is this a generic SSH behaviour or it's just specific to the Erlang implementation?

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• Writing a code example

  - by Stefano Borini

  I would like to have your feedback regarding code examples. One of the most frustrating experiences I sometimes have when learning a new technology is finding useless examples. I think an example as the most precious thing that comes with a new library, language, or technology. It must be a starting point, a wise and unadulterated explanation on how to achieve a given result. A perfect example must have the following characteristics: Self contained: it should be small enough to be compiled or executed as a single program, without dependencies or complex makefiles. An example is also a strong functional test if you correctly installed the new technology. The more issues could arise, the more likely is that something goes wrong, and the more difficult is to debug and solve the situation. Pertinent: it should demonstrate one, and only one, specific feature of your software/library, involving the minimal additional behavior from external libraries. Helpful: the code should bring you forward, step by step, using comments or self-documenting code. Extensible: the example code should be a small “framework” or blueprint for additional tinkering. A learner can start by adding features to this blueprint. Recyclable: it should be possible to extract parts of the example to use in your own code Easy: An example code is not the place to show your code-fu skillz. Keep it easy. helpful acronym: SPHERE. Prototypical examples of violations of those rules are the following: Violation of self-containedness: an example spanning multiple files without any real need for it. If your example is a python program, keep everything into a single module file. Don’t sub-modularize it. In Java, try to keep everything into a single class, unless you really must partition some entity into a meaningful object you need to pass around (and java mandates one class per file, if I remember correctly). Violation of Pertinency: When showing how many different shapes you can draw, adding radio buttons and complex controls with all the possible choices for point shapes is a bad idea. You de-focalize your example code, introducing code for event handling, controls initialization etc., and this is not part the feature you want to demonstrate, they are unnecessary noise in the understanding of the crucial mechanisms providing the feature. Violation of Helpfulness: code containing dubious naming, wrong comments, hacks, and functions longer than one page of code. Violation of Extensibility: badly factored code that have everything into a single function, with potentially swappable entities embedded within the code. Example: if an example reads data from a file and displays it, create a method getData() returning a useful entity, instead of opening the file raw and plotting the stuff. This way, if the user of the library needs to read data from a HTTP server instead, he just has to modify the getData() module and use the example almost as-is. Another violation of Extensibility comes if the example code is not under a fully liberal (e.g. MIT or BSD) license. Violation of Recyclability: when the code layout is so intermingled that is difficult to easily copy and paste parts of it and recycle them into another program. Again, licensing is also a factor. Violation of Easiness: Yes, you are a functional-programming nerd and want to show how cool you are by doing everything on a single line of map, filter and so on, but that could not be helpful to someone else, who is already under pressure to understand your library, and now has to understand your code as well. And in general, the final rule: if it takes more than 10 minutes to do the following: compile the code, run it, read the source, and understand it fully, it means that the example is not a good one. Please let me know your opinion, either positive or negative, or experience on this regard.

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• reading Twitter API with JSON framework

  - by iPixFolio

  Hi, I'm building a twitter reader into an app. I'm using this JSON library to parse the twitter API. I'm seeing some odd results on certain messages. I know that the Twitter API returns results in UTF8 format. I'm wondering if I'm doing something wrong when reading the JSON parsed fields. My code is spread out across multiple classes so it's hard to give a concise code drop with the symptoms, but here's what I've got: I am using ASIHTTP for async HTTP processing. Here is processing a response from ASIHTTP: ... NSMutableString* tempString = [[NSMutableString alloc] initWithString:[request responseString]]; NSError *error; SBJSON *json = [[SBJSON alloc] init]; id JSONresponse = [json objectWithString:tempString error:&error]; [tempString release]; [json release]; if (JSONresponse) { self.response = JSONresponse; ... self.response holds the JSON representation of the result from the Twitter call. Now, I will take the JSON response and write each tweet into a container object (Tweet). in the following code, the response from above is referenced as request.response: ... // save list of albums to local cache for (NSDictionary* response in request.response) { Tweet* tweet = [[Tweet alloc] init]; tweet.text = [response objectForKey:@"text"]; tweet.id = [response objectForKey:@"id"]; tweet.created = [response objectForKey:@"created_at"]; [Tweet addTweet:tweet]; [tweet release]; } ... at this point, I have a container holding the tweets. I'm only keeping 3 fields from the tweet: "id", "text", and "created_at". the "text" field is the problem field. To display the tweets, I build an HTML page from the container of tweets, like this: ... Tweet* tweet = nil; for (int i = 0; i < [Tweet tweetCount]; i++) { tweet = [Tweet tweetAtIndex:i]; [html appendString:@"<div class='tweet'>"]; [html appendFormat:@"<div class='tweet-date'>%@</div>", tweet.created ]; [html appendFormat:@"<div class='tweet-text'>%@</div>", tweet.text ]; [html appendString:@"</div>"]; } ... In another routine, I save the HTML page to a temp file. if (html && [html length] > 0 ) { NSString* uniqueString = [[NSProcessInfo processInfo] globallyUniqueString]; NSString* filename = [NSString stringWithFormat:@"%@.html", uniqueString ]; filename = [tempDir stringByAppendingPathComponent:filename]; NSError* error = nil; [html writeToFile:filename atomically:NO encoding:NSUTF8StringEncoding error:&error]; ... I then create a URLRequest from the file and load it into an UIWebview: NSURL* url = [NSURL fileURLWithPath:filename]; NSURLRequest* request = [NSURLRequest requestWithURL:url]; [self.webView loadRequest:request]; ... At this point, I can see the tweets in a browser window. some of the tweets will show invalid characters like this: iPhone 4 ad spoofed with Glee’s Jane Lynch ... Glee’s should be Glee's Can anybody shed any light on what I'm doing wrong and offer suggestions on how to fix? basically, to summarize: I'm reading a UTF8 feed with JSON I write the UTF8 strings into an HTML file I display the HTML file with UIWebview. some of the UTF8 strings are not properly decoded. I need to know where to decode them and how to do it. thanks! Mark

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• Assembly reference from ASP.NET App_Code directory

  - by Gerald Schneider

  I have trouble getting a custom ObjectDataSource for an asp:ListView control to work. I have the class for the DataSource in the App_Code directory of the web application (as required by the asp:ListView control). using System; using System.Collections.Generic; using System.ComponentModel; using System.Configuration; using System.Data; using System.Data.Common; using System.Web; using System.DirectoryServices; [DataObject] public class UsersDAL { [DataObjectMethod(DataObjectMethodType.Select)] public List<User> LoadAll(int startIndex, int maxRows, string sortedBy) { List<User> users = new List<User>(); DirectoryEntry entry; return users; } } As soon as I add using System.DirectoryServices; the page crashes with this message: Compiler Error Message: CS0234: The type or namespace name 'DirectoryServices' does not exist in the namespace 'System' (are you missing an assembly reference?) Without the usage of System.DirectoryServices the page loads without problems. The reference is there, it is working in classes outside the App_Code directory.

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• Building an extension framework for a Rails app

  - by obvio171

  I'm starting research on what I'd need in order to build a user-level plugin system (like Wordpress plugins) for a Rails app, so I'd appreciate some general pointers/advice. By user-level plugin I mean a package a user can extract into a folder and have it show up on an admin interface, allowing them to add some extra configuration and then activate it. What is the best way to go about doing this? Is there any other opensource project that does this already? What does Rails itself already offer for programmer-level plugins that could be leveraged? Any Rails plugins that could help me with this? A plugin would have to be able to: run its own migrations (with this? it's undocumented) have access to my models (plugins already do) have entry points for adding content to views (can be done with content_for and yield) replace entire views or partials (how?) provide its own admin and user-facing views (how?) create its own routes (or maybe just announce its presence and let me create the routes for it, to avoid plugins stepping on each other's toes) Anything else I'm missing? Also, is there a way to limit which tables/actions the plugin has access to concerning migrations and models, and also limit their access to routes (maybe letting them include, but not remove routes)? P.S.: I'll try to keep this updated, compiling stuff I figure out and relevant answers so as to have a sort of guide for others.

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• Mysteriously empty $_POST array

  - by Lex

  Hi all! I have the following HTML/PHP page: <?php if(empty($_SERVER['CONTENT_TYPE'])) { $type = "application/x-www-form-urlencoded"; $_SERVER['CONTENT_TYPE'] = $type; } echo "<pre>"; var_dump($_POST); var_dump(file_get_contents("php://input")); echo "</pre>"; ?> <form method="post" action="test.php"> <input type="text" name="test[1]" /> <input type="text" name="test[2]" /> <input type="text" name="test[3]" /> <input type="submit" name="action" value="Go" /> </form> As you can see, the form will submit and the expected output is a POST array with one array in it containing the filled in values and one entry "action" with the value "Go" (the button). However, no matter what values I enter in the fields; the result is always: array(2) { ["test"]=> string(0) "" ["action"]=> string(2) "Go" } string(16) "test=&action=Go&" Somehow, the array named test is emptied, the "action" variable does make it through. I've used the Live HTTP Headers extension for Firefox to check whether the POST fields get submitted, and they do. The relevant information from Live HTTP Headers (with a, b and c filled in as values in the textboxes): Content-Type: application/x-www-form-urlencoded Content-Length: 51 test%5B1%5D=a&test%5B2%5D=b&test%5B3%5D=c&action=Go Does anybody have any idea as to why this is happening? I'm freaking out on this one, it has cost me so much time already...

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• Database Design Question regaurding duplicate information.

  - by galford13x

  I have a database that contains a history of product sales. For example the following table CREATE TABLE SalesHistoryTable ( OrderID, // Order Number Unique to all orders ProductID, // Product ID can be used as a Key to look up product info in another table Price, // Price of the product per unit at the time of the order Quantity, // quantity of the product for the order Total, // total cost of the order for the product. (Price * Quantity) Date, // Date of the order StoreID, // The store that created the Order PRIMARY KEY(OrderID)); The table will eventually have millions of transactions. From this, profiles can be created for products in different geographical regions (based on the StoreID). Creating these profiles can be very time consuming as a database query. For example. SELECT ProductID, StoreID, SUM(Total) AS Total, SUM(Quantity) QTY, SUM(Total)/SUM(Quantity) AS AvgPrice FROM SalesHistoryTable GROUP BY ProductID, StoreID; The above query could be used to get the Information based on products for any particular store. You could then determine which store has sold the most, has made the most money, and on average sells for the most/least. This would be very costly to use as a normal query run anytime. What are some design descisions in order to allow these types of queries to run faster assuming storage size isn’t an issue. For example, I could create another Table with duplicate information. Store ID (Key), Product ID, TotalCost, QTY, AvgPrice And provide a trigger so that when a new order is received, the entry for that store is updated in a new table. The cost for the update is almost nothing. What should be considered when given the above scenario?

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• I'v installed NetBeans 6.8 on my MacOS X MacBook and the logs say it cannot be run, any ideas?

  - by codezealot

  I've installed NetBeans 6.8 on my MacBook, and the installation results indicated success. However, every single time I attempt to run the application is shuts down. I monitored the process and noticed the following entries in the console that imply the application cannot be found? 3/19/10 10:20:20 PM [0x0-0x22022].org.netbeans.ide.baseide.200912041610[22168] /Applications/NetBeans/NetBeans 6.8.app/Contents/MacOS/netbeans: line 57: dirname: command not found 3/19/10 10:20:20 PM [0x0-0x22022].org.netbeans.ide.baseide.200912041610[22168] Cannot read cluster file: /../etc/netbeans.clusters 3/19/10 10:20:20 PM com.apple.launchd.peruser.501[77] ([0x0-0x22022].org.netbeans.ide.baseide.200912041610[22168]) Exited with exit code: 1 I started researching how to set the default JDK for use by NetBeans, and found repeated use of the following command line entry; netbeans --jdkhome /System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Home -- from http://wiki.netbeans.org/JDKVersionAndMacOS When I attempt the command line above, I receive "netbeans command not found". So do I ... 1.) Need to create a command called "netbeans" that points to my install location for NetBeans 6.8? If so how do I do that? 2.) How do I get to the netbeans.conf file for NetBeans 6.8, does one even exist for it? It gets even more interesting, the above happens with Eclipse as well. Yippie.

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• Comment reply procedure using jquery and php?

  - by Prashant

  I have Commenting system in my app. For a single video entry anyone can post a comment and someone else can post reply to that comment and replies, cannot have thier further reples, similar to StackOverflow is doing (1 Answer, and thier 1 or more replies). I want the similar functionality what SO has, Let's I have the following HTML <div class="comment" id="comment-908"> First comment </div> <div class="reply"> <div id="reply-909> reply 1 </div> <div id="reply-910> reply 2 </div> <div id="reply-911> reply 3 </div> </div> <form id="reply-form"> <textarea id="replycomment" name="replycomment"></textarea> <input type="submit" name="submit-reply" value="add reply" /> </form> Now above HTML is a sample which I have created, When someone will click on "add reply" button then I am using jquery to post there reply. Now I want to know that there will be multiple comment and multiple add reply forms. So who clicks on which button and for which comment someone wants to post a reply, how will i know that? The above HTML is not in correct way, please suggest me the correct HTML flow which I can use and how to work with jquery? now I want to know when soe

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• Temporary "Backup" of SharePoint Content During Feature and Solution Deployment

  - by ccomet

  I need to decide on a method for storing a subset of the content in a SharePoint site, so that when I delete and recreate certain lists as part of a feature activation, I can re-insert all of this content back where it should belong. I have an idea myself, but I don't know if it's the only method and more importantly, the right method. My client has me creating a SharePoint system for them to communicate with their clients. The business process has maybe 5 stages in it (maybe it's more, I don't even know because they don't tell me everything), and the current system I've written over the past months is maybe 2 stages through. This meets our deadline of completing those systems by Monday next week... but at that point my client is planning on making the site live from that point. In effect, their work with their clients will be running parallel with my work for them. As I complete my own work on a separate test server, I'll push each following stage of the process onto the live server. Scheduled downtimes during non-business times (like a weekend) will be available for me to perform these pushes. Keeping pace so that my development is faster than the actual business process is my own problem and off-topic... so let's get back to the problem I stated at the start of this post. In this system, we have sets of features which will create lists for their associated content types and field types when activated, and delete these lists when the feature is deactivated. Most updates don't need to deactivate and reactivate these features, such as workflow changes, custom actions, custom forms, and similar ilk. But there are some parts which do require this. On my test server, it's okay for me to obliterate lists, but once the site is live and there's real correspondence data, it's absolutely unacceptable to do this. So when I need to implement a new change in functionality, I need to be able to store the currently present data in several lists, deactivate the feature, reactivate the feature, and restore all of this data. Perhaps I have hoist myself by my own petard with the feature system I implemented. Unfortunately, the necessity to later on make several of these "project sites" meant I had to do a lot of my code with the concept of "Can be deployed repeatedly" in mind. My current plan is to run through lists and libraries which will be affected by the particular feature that is to be reset. Files and all of their versions will be saved in a directory on the server. Then, a set of text files will be used to store all of the important field values for the items. This includes a lot of cross-list reference lookups that will need to be maintained, but that's simple enough. Then, I deactivate the feature, deploy the new solution, and reactivate the feature. We upload all of the files in the order specified by their versions and update them with the stored fields for those versions, so that we retain the version structure. As each one is first uploaded, the new ID is picked out, and all relevant lookups in the rest of the files are updated (in some manner that I make sure I don't re-update it later with an incorrect value, of course). After that, we run through all the rest of the items in the order most conducive to keeping the relational data correct. This roughly summarizes what my current plan is. To my advantage, there are no long running workflows in the system that will be affected by this, so there's nothing I will have to worry about making sure nothing is "still running" when I do this stuff. I don't really know all the cons of this approach... I can imagine they're quite hefty. But I'm unsure what other choices I even have, and my searches haven't turned up anything. Is there anyone who can think of a better idea? Or will anyone just tell me that I really have no other choice? Thanks in advance!

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• Update Related Entity Of Detached Entity

  - by Hemslingo

  I'm having an issue updating an entity with multiple related entities. I've got a very simple model which consists of an article entity and a list of categories the article can be related to. You can choose from a check box list which of these categories are associated to it...which works fine. The problem crops up when I actually come to update an existing entity using the dbContext. As I am updating this entity, I have already detached it from the context ready to re-attach it later so the update can execute properly. I can see that after I posting the model, the category(s) are being added to the article entity just fine and it looks like it updates in the repository with no errors occurring. When I look in the database the article has updated as normal but the category(s) have not. Here is my (simplified) update code... public virtual bool Attach(T entity) { _dbContext.Entry(entity).State = EntityState.Modified; _dbSet.Attach(entity); return this.Commit(); } Any help will be much appreciated.

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• NHibernate.MappingException - Troubles Shooting Checklist (no persister for)

  - by Berryl

  Here's a starter list: 1) if hbm is hand generated, is it an embedded resource? 2) if using FNH, does it pass a PerssistenceSpecification test? 3) if not using FNH, can you save and then load the persisted class? 4) more? I'm sure many of you have gotten this one at one point or another. But have you ever gotten it when you knew your mapping was set up correctly? I started getting this exception after I started using a new repository design, but only in one scenario! PersistenceSpecification tests pass, as do all repository methods (using SQLite). The scenario that leads to the exception is when legacy projects from a different db are converted to green field system. The legacy system is from a different database and has it's own session factory, which should be irrelevant because the error comes after previously unconverted Projects are retrieved and in memory. As the routine tries to save these unconverted Projects into the new database, the exception is thrown, full stack trace below. Any ideas on how to build up the trouble shooting check list and solves this problem? Cheers, Berryl === the Exception trace ===== failed: NHibernate.MappingException : No persister for: Smack.ConstructionAdmin.Domain.Model.Projects.Project at NHibernate.Impl.SessionFactoryImpl.GetEntityPersister(String entityName) at NHibernate.Impl.SessionImpl.GetEntityPersister(String entityName, Object obj) at NHibernate.Engine.ForeignKeys.IsTransient(String entityName, Object entity, Nullable`1 assumed, ISessionImplementor session) at NHibernate.Event.Default.AbstractSaveEventListener.GetEntityState(Object entity, String entityName, EntityEntry entry, ISessionImplementor source) at NHibernate.Event.Default.DefaultSaveOrUpdateEventListener.PerformSaveOrUpdate(SaveOrUpdateEvent event) at NHibernate.Event.Default.DefaultSaveOrUpdateEventListener.OnSaveOrUpdate(SaveOrUpdateEvent event) at NHibernate.Impl.SessionImpl.FireSaveOrUpdate(SaveOrUpdateEvent event) at NHibernate.Impl.SessionImpl.SaveOrUpdate(Object obj) NHibernate\Repository\FabioNHibRepository.cs(46,0): at Smack.Core.Data.NHibernate.Repository.FabioNHibRepository`1.Add(T item) LegacyConversion\LegacyBatchUpdater.cs(20,0): at Smack.ConstructionAdmin.Data.LegacyConversion.LegacyBatchUpdater.ConvertOpenLegacyProjects(ILegacyProjectDao legacyProjectDao, IProjectRepository greenProjectRepository) Data\Brownfield\ProjectBatchUpdate_SQLiteTests.cs(19,0): at Smack.ConstructionAdmin.Tests.Data.Brownfield.ProjectBatchUpdate_SQLiteTests.Test()

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• GD PHP Base64 Picture (png) error

  - by hogofwar

  This is part of my code: $con = mysql_connect("localhost","username","passs"); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("database", $con); if(mysql_num_rows(mysql_query("SELECT name FROM xbox_user WHERE name = '$user'"))){ // Code inside if block if userid is already there $result = mysql_query("SELECT name FROM xbox_user WHERE name = '$user'"); while($row = mysql_fetch_array($result)) { if ($row['date'] > $row['date']+100){ $src = imagecreatefrompng($result['XboxInfo']['TileUrl']); $base64= base64_encode(file_get_contents($result['XboxInfo']['TileUrl'])); $date = date("Ymd"); mysql_query("UPDATE xbox_user SET date = '$date' SET avatar = '$base64' WHERE name = '$user'"); }else{ $encode = $row['avatar']; //echo $encode; $rand = rand(1, 1337); file_put_contents('/tmp/'.$rand.'.png', base64_decode($row['avatar'])); //ERROR LINE $src = imagecreatefrompng('/tmp/'.$rand.'.png'); unlink('/tmp/'.$rand.'.png'); } } }else{ $src = imagecreatefrompng($result['XboxInfo']['TileUrl']); $base64= base64_encode(file_get_contents($result['XboxInfo']['TileUrl'])); $date = date("Ymd"); mysql_query("INSERT INTO xbox_user (name, avatar, date) VALUES ('$user', '$base64', '$date')"); } It comes up with multiple errors but I feel this one should be addressed first as the other could just be caused by the first error: Warning: imagecreatefrompng() [function.imagecreatefrompng]: '/tmp/628.png' is not a valid PNG file in /home/nah/public_html/experiment/xbox/draw3.php on line 60 It also does create an entry in my mysql DB

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• jBPM 4.3 Task Notification tag being ignored

  - by user291780

  I have a task with a notification entry but no emails are being generated and no entries in logs. Emails from mail node work fine. What am I doing wrong? Do I have to do anything special to my custom AssignmentHandler impl for notifications? <mail g="216,156,80,40" name="Send email"> <to addresses="[email protected]" /> <subject>Testing the mail activity</subject> <text>This message was sent by the jBPM mail activity tester</text> <transition g="-78,-18" to="User Review" /> </mail> <task g="210,250,92,52" name="User Review"> <description>User Review Task Description</description> <assignment-handler class="com.kevinmoodley.BPMTaskAssignmentHandler"> <description>Review AI Process Failure Assignment Handler</description> </assignment-handler> <notification> <to addresses="[email protected]" /> <subject>Testing from task</subject> <text>This message was sent by the jBPM User Review task</text> </notification> <transition g="-42,-18" name="CANCEL" to="end1" /> <transition g="-42,-18" name="RESTART" to="end2" /> </task> Thanks Kevin

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• Ruby on Rails ActiveRecord/Include/Associations can't get my query to work

  - by Cypher

  I just started learning Rails and I'm just trying to set up query via associations. All the queries I try to write seem to be doing bizzare things and end up trying to query two tables parsed together with an '_' as one table. I have no clue why this would ever happen My tables are as follows: schools: id name variables: id name type var_entries: id variable_id entry school_entries: id school_id var_entry_id my rails association tables are $local = { :adapter => "mysql", :host => "localhost", :port => "3306".to_i, :database => "spy_2", :username =>"root", :password => "vertrigo" } class School < ActiveRecord::Base establish_connection $local has_many :school_entries has_many :var_entries, :through => school_entries end class Variable < ActiveRecord::Base establish_connection $local has_many :var_entries has_many :school_entries, :through => :var_entries end class VarEntry < ActiveRecord::Base establish_connection $local has_many_and_belongs_to :school_entries belongs_to :variables end class SchoolEntry < ActiveRecord::Base establish_connection $local belongs_to :school has_many :var_entries end I want to do this sql query: SELECT school_id, variable_id,rank FROM school_entries, variables, var_entries, schools WHERE var_entries.variable_id = variables.id AND school_entries.var_entry_id = var_entries.id AND schools.id = school_entries.school_id AND variables.type = 'number'; and put it into Rails notation: here is one of my many failed attempts schools = VarEntry.all(:include => [:school_entries, :variables], :conditions => "variables.type = 'number'") the error: 'const_missing': uninitialized constant VarEntry::Variables (NameError) if i remove variables schools = VarEntry.all(:include => [:school_entries, :variables], :conditions => "type = 'number'") the error is: Mysql::Error: Unkown column 'type' in 'where clause': SELECT * FROM 'var_entries' WHERE (type=number) (ActiveRecord::StatementInvalid) Can anyone tell me where I'm going horribly wrong?

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• problems with openGl on eclipse

  - by lego69

  I'm working on Windows XP I have portable version of Eclipse Galileo, but I didn't find there glut so I decided to add it using this link I made all steps and and now I'm trying to compile this code #include "GL/glut.h" #include "GL/gl.h" #include "GL/glu.h" /////////////////////////////////////////////////////////// // Called to draw scene void RenderScene(void) { // Clear the window with current clearing color glClear(GL_COLOR_BUFFER_BIT); // Flush drawing commands glFlush(); } /////////////////////////////////////////////////////////// // Setup the rendering state void SetupRC(void) { glClearColor(0.0f, 0.0f, 1.0f, 1.0f); } /////////////////////////////////////////////////////////// // Main program entry point void main(int argc, char* argv[]) { glutInit(&argc, argv); glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB); glutInitWindowSize(800,600); glutCreateWindow("Simple"); glutDisplayFunc(RenderScene); SetupRC(); glutMainLoop(); } and I have this errors Simple.o: In function `RenderScene': C:/Documents and Settings/Administrator/Desktop/workspace/open/Debug/../Simple.c:16: undefined reference to `_imp__glClear' C:/Documents and Settings/Administrator/Desktop/workspace/open/Debug/../Simple.c:20: undefined reference to `_imp__glFlush' Simple.o: In function `SetupRC': C:/Documents and Settings/Administrator/Desktop/workspace/open/Debug/../Simple.c:27: undefined reference to `_imp__glClearColor' Simple.o: In function `main': C:/Documents and Settings/Administrator/Desktop/workspace/open/Debug/../Simple.c:34: undefined reference to `glutInit' C:/Documents and Settings/Administrator/Desktop/workspace/open/Debug/../Simple.c:35: undefined reference to `glutInitDisplayMode' C:/Documents and Settings/Administrator/Desktop/workspace/open/Debug/../Simple.c:36: undefined reference to `glutInitWindowSize' C:/Documents and Settings/Administrator/Desktop/workspace/open/Debug/../Simple.c:37: undefined reference to `glutCreateWindow' C:/Documents and Settings/Administrator/Desktop/workspace/open/Debug/../Simple.c:38: undefined reference to `glutDisplayFunc' C:/Documents and Settings/Administrator/Desktop/workspace/open/Debug/../Simple.c:42: undefined reference to `glutMainLoop' collect2: ld returned 1 exit status please can somebody help me, thanks in advance

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• Retrieval of Single Entity + Ria Services

  - by Oliver

  Hi there, I am reading and doing some RnD on RIA as a solution for a new Silverlight project. I have read alot of the documentation and decided to do a small mockup of a system using .Net RIA Services. I want to know how to get a Single Entity from the Domain Service? example: I want to get a person and populate a form: public Person GetSinglePerson() { return new Person { ID = 4, FirstName = "Cyanide", LastName = "Happiness", Status=3 }; } Say I use the the DomainDataSource: <riaControls:DomainDataSource x:Name="source2" QueryName="GetSinglePersonQuery" AutoLoad="True"> <riaControls:DomainDataSource.DomainContext> <web:DataContext/> </riaControls:DomainDataSource.DomainContext> </riaControls:DomainDataSource> This only returns a EntityCollectionView? How do I bind for example in a form to properties that are in the Person Class? Like: <TextBox Text="{Binding FirstName, ElementName=source2}"/> Everything seems to come back as IEnumerable or as CollectionViews (like the DATA binding in the samples) which aren't useful for a single entity. I want a single persons entry, why do I want a CollectionView in which I cannot access properties directly. I have also use the: LoadOperation<Person> oLoadOperation = oDataContext.Load(oDataContext.GetSinglePersonQuery()); I am very close to giving up on this RIA idea and just going with a normal WCF service as it is more predictable and manageable at this stage.

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• Access problems with System.Diagnostics.Process in webservice

  - by Martin

  Hello everyone. I have problems with executing a process in a webservice method on a Windows Server 2003 machine. Here is the code: Dim target As String = "C:\dnscmd.exe" Dim fileInfo As System.IO.FileInfo = New System.IO.FileInfo(target) If Not fileInfo.Exists Then Throw New System.IO.FileNotFoundException("The requested file was not found: " + fileInfo.FullName) End If Dim startinfo As New System.Diagnostics.ProcessStartInfo("C:\dnscmd.exe") startinfo.UseShellExecute = False startinfo.Arguments = "\\MYCOMPUTER /recordadd mydomain.no " & dnsname & " CNAME myhost.mydomain.no" startinfo.UserName = "user1" Dim password As New SecureString() For Each c As Char In "secretpassword".ToCharArray() password.AppendChar(c) Next startinfo.Password = password Process.Start(startinfo) I know the process is being executed because i use processmonitor.exe on the server and it tells me that c:\dnscmd.exe is called with the right parameters Full command line value from procmon is: "C:\dnscmd.exe" \MYCOMPUTER /recordadd mydomain.no mysubdomain CNAME myhost.mydomain.no The user of the created process on the server is NT AUTHORITY\SYSTEM. BUT, the dns entry will not be added! Here is the weird thing: I KNOW the user (user1) I authenticate with has administrative rights (it's the same user I use to log on the machine with), but the user of the process in procmon says NT AUTHORITY\SYSTEM (which is not the user i use to authenticate). Weirdest: If i log on to the server, copy the command line value read from the procmon logging, and paste it in a command line window, it works! Reading procmon after this shows that user1 owns the dnscmd process. Why doesn't user1 become owner of the process started with system.diagnostics.process? Is the reason why the command doesn't work?

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• Why aren't google api clients built on top of Apache's Abdera project ?

  - by lisak

  Hey, Could anybody please explain that to me? As far as I can see, the developers of java's google api client library are reinventing the wheel. It's like writing a new JDK for a Java project. I'm aware of the fact that google data protocol is a little specific re atom publishing, but if one needs to use some of the fancy extensions and features that Apache Abdera project offers for this protocol, it is better not to use google api client library and implement the client from scratch with Abdera... And I'm sure that in a lot of cases its features such as Abdera's JCR adapter would become very handy for google docs, google translator toolkit and others. Now it's great that there is a google api client library to be used for google docs, but what am I going to do with the documents? I believe that in more than a half cases there is also a repository or database on the other side. And in that case, abdera is needed, not the simple google api clients that are only marshalling/unmarshalling the feeds... In fact, there is something to persist in all of the google APIs. It would make sense, if google decided to invest the effort into Abdera enhancement... This doesn't... Also for the question to be more specific: How are you developing google api clients, that need entry persistence (JCR for instance) ? What would be the best way to integrate a google api client library with Apache Abdera ?

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• Canonical resource for forms-based design in ASP.NET MVC?

  - by Robert Harvey

  Is there a resource on the web that describes various form scenarios in ASP.NET MVC, and gives example solutions within a sensible, consistent design philosophy? Examples of such scenarios might be: One-to-many forms, like invoice data-entry forms. Foreign-table forms such as Add New User in a form that requires specifying a user Forms that require dynamic interaction, using Ajax or JSON. Popup forms Forms requiring multiple data records to be input, without postbacks. Note that there is considerable conceptual and technological overlap among these example scenarios. I am aware that there is a vast patchwork quilt of available technologies and examples out there that provide partial solutions and pieces of solutions, such as jQuery Ajax, CSS, and so forth. But I would like guidance in using these technologies in more effective and consistent ways. I am not considering web forms integration with an ASP.NET MVC application; I would still like my applications to be pure MVC. Nor am I, at the moment, considering a paid solution like Telerik. But I would like to know if someone has already done some of the work combining these technologies into a consistent, cohesive whole, that follows a sensible design philosophy. (an open source framework, perhaps?)

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• TCL How to read , extract and count the occurent in .txt file (Current Directory)

  - by Passion

  Hi Folks, I am beginner to scripting and vigorously learning TCL for the development of embedded system. I have to Search for the files with only .txt format in the current directory, count the number of cases of each different "Interface # nnnn" string in .txt file, where nnnn is a four or 32 digits max hexadecimal no and o/p of a table of Interface number against occurrence. I am facing implementation issues while writing a script i.e, Unable to implement the data structure like Linked List, Two Dimensional array. I am rewriting a script using multi dimension array (Pass values into the arrays in and out of procedure) in TCL to scan through the every .txt file and search for the the string/regular expression ‘Interface # ’ to count and display the number of occurrences. If someone could help me to complete this part will be much appreciated. Search for only .txt extension files and obtain the size of the file Here is my piece of code for searching a .txt file in present directory set files [glob *.txt] if { [llength $files] > 0 } { puts "Files:" foreach f [lsort $files] { puts " [file size $f] - $f" } } else { puts "(no files)" } I reckon these are all the possible logical steps behind to complete it i) Once searched and find the .txt file then open all .txt files in read only mode ii) Create a array or list using the procedure (proc) Interface number to NULL and Interface count to zero 0 iii) Scan thro the .txt file and search for the string or regular expression "interface # iv) When a match found in .txt file, check the Interface Number and increment the count for the corresponding entry. Else add new element to the Interface Number list v) If there are no files return to the first directory My o/p is like follows Interface Frequency 123f 3 1232 4

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• nhibernate error recovery

  - by Berryl

  I downloaded Rhino Security today and started going through some of the tests. Several that run perfectly in isolation start getting errors after one that purposely raises an exception runs though. Here is that test: [Test] public void EntitesGroup_CanCreate() { var group = _authorizationRepository.CreateEntitiesGroup("Accounts"); _session.Flush(); _session.Evict(group); var fromDb = _session.Get<EntitiesGroup>(group.Id); Assert.NotNull(fromDb); Assert.That(fromDb.Name, Is.EqualTo(group.Name)); } And here are the tests and error messages that fail: [Test] public void User_CanSave() { var ayende = new User {Name = "ayende"}; _session.Save(ayende); _session.Flush(); _session.Evict(ayende); var fromDb = _session.Get<User>(ayende.Id); Assert.That(fromDb, Is.Not.Null); Assert.That(ayende.Name, Is.EqualTo(fromDb.Name)); } ----> System.Data.SQLite.SQLiteException : Abort due to constraint violation column Name is not unique [Test] public void UsersGroup_CanCreate() { var group = _authorizationRepository.CreateUsersGroup("Admininstrators"); _session.Flush(); _session.Evict(group); var fromDb = _session.Get<UsersGroup>(group.Id); Assert.NotNull(fromDb); Assert.That(fromDb.Name, Is.EqualTo(group.Name)); } failed: NHibernate.AssertionFailure : null id in Rhino.Security.Tests.User entry (don't flush the Session after an exception occurs) Does anyone see how I can reset the state of the in memory SQLite db after the first test? I changed the code to use nunit instead of xunit so maybe that is part of the problem here as well. Cheers, Berryl

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• Running SQLite 3 in MicroApache

  - by Alien426

  I'm running MicroApache (http://microapache.amadis.sytes.net) on Windows XP and would like to use SQLite 3 databases. The PHP version is 5.2.9-2. My MicroApache version has SQLite 2 support through 2 lines in the php.ini: extension=php_pdo.dll extension=php_sqlite.dll I test whether the extension works in 3 ways: 1. phpinfo() 2. extension_loaded() and get_loaded_extensions() 3. using sample code that var_dump()s the constant SQLITE3_NUM (should be the integer 2) and tries to create a database (error: class 'SQLite3' does not exist) Things I have tried (if I can remember them all): 1. copied php_sqlite3.dll from a full installation of PHP and added "extension=php_sqlite3.dll" to php.ini - error "Procedure entry point gc_remove_zval_from_buffer was not found in php5ts.dll" 2. compressed the DLL with UPX (like the other DLLs of MicroApache seem to be) - does not display an error on start, nor in the log file, but does not work 3. tried various things with php.ini - created a section "[sqlite3]" - prefixed "sqlite3." to "extension_dir=." and "extension=php_sqlite3.dll" - ... 4. tried to use PDO, it says it 'could not find driver' Who can help me get SQLite 3 to work?

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• Escaping single quote in PHP when inserting into MySQL

  - by hairdresser-101

  PLEASE NOTE: I am reposting as the original was not answered correctly... I AM LOOKING FOR THE WHY - NOT THE SOLUTION - I KNOW THE SOLUTION, WHAT I DON'T UNDERSTAND IS THE WHY! I have a perplexing issue that I can't seem to comprehend... I'm hoping someone here might be able to point me in the right direction... I have two SQL statements: - the first enters information from a form into the database. - the second takes data from the database entered above, sends an email and then logs the details of the transaction The problem is that it a appears that a single quote is triggering a MySQL error on the second entry only!!! The first instance works without issue but the second instance triggers the mysql_error(). Does the data from a form get handled differently from the data captured in a form? Query#1 - This works without issue (and without escaping the single quote) $result = mysql_query("INSERT INTO job_log (order_id, supplier_id, category_id, service_id, qty_ordered, customer_id, user_id, salesperson_ref, booking_ref, booking_name, address, suburb, postcode, state_id, region_id, email, phone, phone2, mobile, delivery_date, stock_taken, special_instructions, cost_price, cost_price_gst, sell_price, sell_price_gst, ext_sell_price, retail_customer, created, modified, log_status_id) VALUES ('$order_id', '$supplier_id', '$category_id', '{$value['id']}', '{$value['qty']}', '$customer_id', '$user_id', '$salesperson_ref', '$booking_ref', '$booking_name', '$address', '$suburb', '$postcode', '$state_id', '$region_id', '$email', '$phone', '$phone2', '$mobile', STR_TO_DATE('$delivery_date', '%d/%m/%Y'), '$stock_taken', '$special_instructions', '$cost_price', '$cost_price_gst', '$sell_price', '$sell_price_gst', '$ext_sell_price', '$retail_customer', '".date('Y-m-d H:i:s', time())."', '".date('Y-m-d H:i:s', time())."', '1')"); Query#2 - This fails when entering a name with a single quote (i.e. O'Brien) $query = mysql_query("INSERT INTO message_log (order_id, timestamp, message_type, email_from, supplier_id, primary_contact, secondary_contact, subject, message_content, status) VALUES ('$order_id', '".date('Y-m-d H:i:s', time())."', '$email', '$from', '$row->supplier_id', '$row->primary_email' ,'$row->secondary_email', '$subject', '$message_content', '1')");

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• Escaping single quote in PHP when inserting into MySQL

  - by hairdresser-101

  I have a perplexing issue that I can't seem to comprehend... I'm hoping someone here might be able to point me in the right direction... I have two SQL statements: - the first enters information from a form into the database. - the second takes data from the database entered above, sends an email and then logs the details of the transaction The problem is that it a appears that a single quote is triggering a MySQL error on the second entry only!!! The first instance works without issue but the second instance triggers the mysql_error(). Does the data from a form get handled differently from the data captured in a form? Query#1 - This works without issue (and without escaping the single quote) $result = mysql_query("INSERT INTO job_log (order_id, supplier_id, category_id, service_id, qty_ordered, customer_id, user_id, salesperson_ref, booking_ref, booking_name, address, suburb, postcode, state_id, region_id, email, phone, phone2, mobile, delivery_date, stock_taken, special_instructions, cost_price, cost_price_gst, sell_price, sell_price_gst, ext_sell_price, retail_customer, created, modified, log_status_id) VALUES ('$order_id', '$supplier_id', '$category_id', '{$value['id']}', '{$value['qty']}', '$customer_id', '$user_id', '$salesperson_ref', '$booking_ref', '$booking_name', '$address', '$suburb', '$postcode', '$state_id', '$region_id', '$email', '$phone', '$phone2', '$mobile', STR_TO_DATE('$delivery_date', '%d/%m/%Y'), '$stock_taken', '$special_instructions', '$cost_price', '$cost_price_gst', '$sell_price', '$sell_price_gst', '$ext_sell_price', '$retail_customer', '".date('Y-m-d H:i:s', time())."', '".date('Y-m-d H:i:s', time())."', '1')"); Query#2 - This fails when entering a name with a single quote (i.e. O'Brien) $query = mysql_query("INSERT INTO message_log (order_id, timestamp, message_type, email_from, supplier_id, primary_contact, secondary_contact, subject, message_content, status) VALUES ('$order_id', '".date('Y-m-d H:i:s', time())."', '$email', '$from', '$row->supplier_id', '$row->primary_email' ,'$row->secondary_email', '$subject', '$message_content', '1')");

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