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• Query for value where a default namespace node exists

  - by Jay

  I have the following XML that is provided to me and I cannot change it: <Parent> <Settings Version="1234" xmlns="urn:schemas-stuff-com"/> </Parent> I am trying to retrieve the "Version" attribute value using XPath. It appears since the xmlns is defined without an alias it automatically assigns that xmlns to the Settings node. When I read this XML into an XMLDocument and view the namespaceURI value for the Settings node it is set to "urn:schemas-stuff-com". I have tried: //Parent/Settings/@Version - returns Null //Parent/urn:schemas-stuff-com:Settings/@Version - invalid syntax

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• move data that retrieved from XML file to iPhone DataBase

  - by totato

  The idea for my project is : retrieve announcements from my website to my iPhone app (using XML file),then I want to make the users of my app can select any announcement he want and click button in ActionSheet which moves the selected announcement to "favorite announcements tableview" (have Database for favorite announcements) "as apple done in favorite contacts in phone app for iPhone ". So, I want to copy some of this data to specific database in my app (and display in tableview) , can I do this? how? any hints? thanks..

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• Rails: unexpected behavior updating a shared instance

  - by Pascal Lindelauf

  I have a User object, that is related to a Post object via two different association paths: Post --(has_many)-- comments --(belongs to)-- writer (of type User) Post --(belongs to)-- writer (of type User) Say the following hold: user1.name == "Bill" post1.comments[1].writer == user1 post1.writer == user1 Now when I retrieve the post1 and its comments from the database and I update post1.comments[1].writer like so: post1.comments[1].writer.name = "John" I would expect post1.writer to equal "John" too. But it doesn't! It still equals "Bill". So there seems to be some caching going on, but the kind I would not expect. I would expect Rails to be clever enough to load exactly one instance of the user with name "Bill"; instead is appears to load two individual ones: one for each association path. Can someone explain how this works exactly and how I am to handle these types of situations the "Rails way"?

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• Java vs c++ types

  - by folone

  I've recently had a question about coledatetime java implementation, and Chris said, that the problem might lay in type conversions: cpp-float vs java-float (Or maybe cpp-date vs java-date. Not types, but..). Now I have several questions on this: Is there a table of comparison for java vs c++ types? If type conversions is the problem, in my situation (I have a db with OLEDate records, already created with some c++ program. I need to read and write to that db, so that the OLEDate field compatibility remained: my java code reads proper dates, and c++ program is not affected with what the java program wrote to the db.), what would you do: Use COleDateTime to retrieve the date with JNI? Create your own implementation at all costs (using broader types, or anything else)? Is there anything, I'm missing here?

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• Is there a SaaS for logging user activity?

  - by JoshL

  In almost every app that I build I create some kind of user log table to log various activities that my actual USERS (not visitors, but someone with an account) perform on the site. This is primarily used for customer service issues to allow me to pull up a record of the pages and actions that a user has visited. The downside to this is the size of the UserLogs table. It gets immense. I'm not sure if it is common practice or not for others to log INDIVIDUAL (not aggregate like Google Analytics) user behavior to a database, but if it is I'm wondering if any form of a SaaS exists to help offload this task? I essentially need a RESTful API that lets me store and retrieve individual user activity quickly and securely. Anyone know of any or am I the only one who has this issue?

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• getAssetFileDescriptor from ZipResourceFile merges all mp3 in mediaplayer SOLVED

  - by Jordi

  I've a program with an Expansion file that stores 4 mp3 in a obb file (zip without compression). I can retrieve the data, but instead of taking the audio file i asked for, it merges ALL audio files in the same AssetFileDescriptor. ---SOLVED--- with the fixes Support class public AssetFileDescriptor getaudio(){ ZipResourceFile expansionFile = APKExpansionSupport.getAPKExpansionZipFile(c,21,21); AssetFileDescriptor afd=null; if(take==1) { afd = expansionFile.getAssetFileDescriptor("file01.mp3"); }else if(take==2 { afd = expansionFile.getAssetFileDescriptor("file02.mp3"); } //more els eif ............ return afd; } In the MediaPlayer class AssetFileDescriptor fd = Llistat.getInstance().getAudio(); mPlayer.setDataSource(fd.getFileDescriptor(), fd.getStartOffset(),fd.getLength()); mPlayer.prepare(); fd.close(); My problem was that i directly was returning and using a FileDescriptor, while i was needing the AssetFileDescriptor to take its StartOffset and Length.

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• iPhone - How to import native calendar events to my iphone app?

  - by sachi

  I am doing one simple application using iPhone calendar, where I need to import the iPhone native calendar events into my iPhone app. How can I do this. I have a piece of code but it doesn't seems to be working. I have added some events into my iPhone native calendar. But when i retrieve it's not fetching anything. Here is the piece of code. -(IBAction)importCalEvents:(id)sender { NSArray *caleandarsArray = [[NSArray alloc] init]; caleandarsArray = [[eventStore calendars] retain]; NSLog(@"Calendars from Array : %@", caleandarsArray); for (EKCalendar *CalendarEK in caleandarsArray) { NSLog(@"Calendar Title : %@", CalendarEK.title); } }

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• Retrieving Top 10 rows ans sum all others in row 11

  - by Mario

  Hello all, I have the following query that retrieve the number of users per country; SELECT C.CountryID AS CountryID, C.CountryName AS Country, Count(FirstName) AS Origin FROM Users AS U INNER JOIN Country AS C ON C.CountryID = U.CountryOfOrgin GROUP BY CASE C.CountryName, C.CountryID What I need is a way to get the top 10 and then sum all other users in a single row. I know how to get the top 10 but I`m stuck on getting the remaining in a single row. Is there a simple way to do it? For example if the above query returns 17 records the top ten are displayed and a sum of the users from the 7 remaining country should appear on row 11. On that row 11 the countryid would be 0 and countryname Others Thanks for your help!

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• Resetting Objects vs. Constructing New Objects

  - by byronh

  Is it considered better practice and/or more efficient to create a 'reset' function for a particular object that clears/defaults all the necessary member variables to allow for further operations, or to simply construct a new object from outside? I've seen both methods employed a lot, but I can't decide which one is better. Of course, for classes that represent database connections, you'd have to use a reset method rather than constructing a new one resulting in needless connecting/disconnecting, but I'm talking more in terms of abstraction classes. Can anyone give me some real-world examples of when to use each method? In my particular case I'm thinking mostly in terms of ORM or the Model in MVC. For example, if I would want to retrieve a bunch of database objects for display and modify them in one operation.

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• Firebug profiling issue: "no activity to profile"

  - by thermal7

  I want to try some different options with some javascript (jQuery) to see which is the fastest, however I can't get profiling working properly. Here is the code I want to test. $this.keypress(function(e) { console.profile("test"); //retrieve the charcode if possible, otherwise get the keycode k = e.which ? e.which : e.CharCode; if (blockKeyCodes.indexOf("|" + k + "|") != -1 || e.ctrlKey && k == 86) e.preventDefault(); console.profileEnd(); }); However, when I run this the console states "no activity to profile". If I use console.time the result is 0ms. Anyone know how to fix this?

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• Using md5_file(); doesn't return the md5 sometimes?

  - by Rob

  <?php include_once('booter/login/includes/db.php'); $query="SELECT * FROM shells"; $result=mysql_query($query); while($row=mysql_fetch_array($result, MYSQL_ASSOC)){ $hash = @md5_file($row['url']); echo $hash . "<br>"; } ?> The above is my code. Usually it works flawlessly on most urls, but every now and then it will just skip the md5 on a line, as if it doesn't retrieve it, even though the file is there. I can't figure out why. Any ideas?

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• StructureMap: Calling repository constructor based on RouteData

  - by FreshCode

  I'm implementing a multi-tenant ASP.NET MVC application and using StructureMap for DI where my repositories depend on an ITenantContext interface, which depends on RouteData (or a base controller property). How do I tell StructureMap to construct TenantContext(tenantID); where tenantID is derived from my RouteData or some base controller property? Given the following route: {tenant}/{controller}/{action} My base controller retrieves and stores the correct Tenant based on the {tenant} URL parameter. Using Tenant, a repository with an ITenantContext can be constructed to retrieve only data that is relevant to that tenant. Based on the other DI questions, AbstractFactory could be a solution?solution?

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• Accessing non-related entities in LinqToSql entity classes

  - by Chris Johnson

  In LinqToSql, if I want to access a non-related entity in an entity partial class, how do I do this without creating a new DataContext? Here's the scenario: I have the tables Client, IssueType and ClientIssueType. A Client may specify a list of IssueTypes if they do not want to use the default IssueTypes. I have the default IssueTypes in the ClientIssueType table with a ClientId of null. In my Client partial I'd like to try to retrieve all IssueTypes, and if none are found, return all default IssueTypes. The only way I can see of accessing the IssueTypes with a null ClientId is by accessing the table through a new DataContext, which is problematic once I want to start assigning them to Issues. Where am I going wrong?

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• Hibernate: how to maintain insertion order

  - by jwaddell

  I have a list of entities where creation order is important, but they do not contain a timestamp to use for sorting. Entities are added to the end of the list as they are created so they will be ordered correctly in the list itself. After persisting the list using Hibernate the entities appear in the database table in the order that they were created. However when retrieving the list using a new Hibernate session the list is now in reverse order of insertion/creation. Is this expected behaviour? Is there any way to retrieve the list in the same order as it appears in the table? The primary key is a UUID, and the list of entities should always have been created on the same IP address and JVM. This mean sorting by UUID is a possibility but I'd rather not make assumptions. Another possibility is if the list is guaranteed to always come out in reverse order I could always just work through it backwards.

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• C++ - Resources in static library question

  - by HardCoder1986

  Hello! This isn't a duplicate of http://stackoverflow.com/questions/531502/vc-resources-in-a-static-library because it didn't help :) I have a static library with TWO .rc files in it's project. When I build my project using the Debug configuration, I retrieve the following error (MSVS2008): fatal error LNK1241: resource file res_yyy.res already specified Note, that this happens only in Debug and Release library builds without any troubles. The command line for Resources page in project configuration looks the same for every build: /fo"...(Path here)/Debug/project_name.res" /fo"...(Path here)/Release/project_name.res" and I can't understand what's the trouble. Any ideas? UPDATE I don't know why this happens, but when I turn "Use Link-Time Code Generation" option on the problem goes away. Could somebody explain why does this happen? I feel like MS-compiler is doing something really strange here. Thanks.

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• SOLR and Natural Language Parsing - Can I use it?

  - by andy

  hey guys, my requirements are pretty similar to this: Requirements http://stackoverflow.com/questions/90580/word-frequency-algorithm-for-natural-language-processing Using Solr While the answer for that question is excellent, I was wondering if I could make use of all the time I spent getting to know SOLR for my NLP. I thought of SOLR because: It's got a bunch of tokenizers and performs a lot of NLP. It's pretty use to use out of the box. It's restful distributed app, so it's easy to hook up I've spent some time with it, so using could save me time. Can I use Solr? Although the above reasons are good, I don't know SOLR THAT well, so I need to know if it would be appropriate for my requirements. Ideal Usage Ideally, I'd like to configure SOLR, and then be able to send SOLR some text, and retrieve the indexed tonkenized content. Context So you guys know, I'm working on a small component of a bigger recommendation engine.

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• getElementsByTagName returns 0-length list when called from didFinishLoad delegate

  - by Emerick Rogul

  I'm using the Chromium port of WebKit on Windows and I'm trying to retrieve a list of all of the images in my document. I figured the best way to do this was to implement WebKit::WebFrameClient::didFinishLoading like so: WebNodeList list = document->getElementsByTagName(L"img"); for (size_t i = 0; i < list.length(); ++i) { // Manipulate images here... } However, when this delegate fires, list.length() returns 0. The only times I've seen it return a list of non-zero length is when I substitute "body" or "head" for "img". Strangely enough, if I call getElementsByTagName(L"img") outside of the delegate, it works correctly. I'm guessing that the DOM isn't fully loaded when didFinishLoading is called, but that would seem to contradict the delegate's name. Does anyone know what I may be missing here?

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• Spring security and Struts 2

  - by Thanksforfish

  I have a struts2 action with an @Secured({"ROLE_ADMIN"}) to secure the execute method. In the execute method i assign a message to a member variable of the action, then return SUCCESS and end up on the jsp page. On the page I retrieve the actions member variable with <sroperty. private String greeting; public String execute() throws Exception { this.greeting="Hello"; return SUCCESS; } // getters and setters for greeting ... <s:property value="greeting" /> The problem is when the secured annotation is present the jsp shows nothing for the member variable but when @Secured is removed the whole thing behaves properly and shows the message that was set into the member variable. It appears that the actual security is working ok but when enabled via the annotation the member variable (or maybe the instance of the action) is not making its way onto the value stack. I cant see any error messages.

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• RIA Services and multiple/dynamic "Include" strategies

  - by user326526

  As an example, assume the following simple model: public class Order { public List<LineItem> LineItems { get; set; } public List<Fee> Fees { get; set; } } public class LineItem { } public class Fee { } With RIA Services, if I want to retrieve an Order and include all of it's line items in the same network call, I can statically place an [Include] attribute on the above LineItems collection. This works great for a single scenario, but what happens when I need multiple "include strategies"? For instance, one situation might call for including the Fees collection and NOT the LineItems collection. Is there any way with RIA Services to control what's included at runtime without redefining your model and/or creating dtos with the attributes statically placed for each use-case?

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• Get only latest row, grouped by a column

  - by Cylindric

  I have a large data-set of emails sent and status-codes. ID Recipient Date Status 1 [email protected] 01/01/2010 1 2 [email protected] 02/01/2010 1 3 [email protected] 01/01/2010 1 4 [email protected] 02/01/2010 2 5 [email protected] 03/01/2010 1 6 [email protected] 01/01/2010 1 7 [email protected] 02/01/2010 2 In this example: all emails sent to someone have a status of 1 the middle email (by date) sent to them has a status of 2, but the latest is 1 the last email sent to others has a status of 2 What I need to retrieve is a count of all emails sent to each person, and what the latest status code was. The first part is fairly simple: SELECT Recipient, Count(*) EmailCount FROM Messages GROUP BY Recipient ORDER BY Recipient Which gives me: Recipient EmailCount [email protected] 2 [email protected] 3 [email protected] 2 How can I get the most recent status code too? The end result should be: Recipient EmailCount LastStatus [email protected] 2 1 [email protected] 3 1 [email protected] 2 2 Thanks. (Server is Microsoft SQL Server 2008, query is being run through an OleDbConnection in .Net)

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• Using netlink to obtain arp entries only returns stale entries

  - by Ben

  I'm currently trying to retrieve reachable neighbors from the arp table in a user space program written in c. I've looked through the source code to the "ip neigh" command (ipneigh.c) and it appears that I should use the flag NUD_REACHABLE. struct { struct nlmsghdr n; struct ndmsg r; } req; memset(&req, 0, sizeof(req)); req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndmsg)); req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_ROOT; req.n.nlmsg_type = RTM_GETNEIGH; req.r.ndm_state = NUD_REACHABLE; However, when I look at the data returned from the kernel, I only have stale entries. In fact, no matter what I put for req.r.ndm_state it seems to return only entries marked as stale by ip neigh. The remainder of my code is modeled after this example: http://linux-hacks.blogspot.com/2009/01/sample-code-to-learn-netlink.html

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• Generate Color Gradient in C#

  - by Ngu Soon Hui

  My question here is similar to the question here, except that I am working with C#. I have two colors, and I have a predefine steps. How to retrieve a list of Colors that are the gradients between the two? This is an approach that I tried, which didn't work: int argbMax = Color.Chocolate.ToArgb(); int argbMin = Color.Blue.ToArgb(); var colorList = new List<Color>(); for(int i=0; i<size; i++) { var colorAverage= argbMin + (int)((argbMax - argbMin) *i/size); colorList.Add(Color.FromArgb(colorAverage)); } If you try the above code, you will find that a gradual increase in argb doesn't correspond to a visual gradual increase in the color. Any idea on this?

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• Problem using AJAX with a Java Applet

  - by diglettpotato

  I currently have a Java Applet which contains a method callfromjs(). Javascript calls this method from the applet so that I don't have to deal with the clunky applet GUI, and then I can create the responses on the DOM easily from javascript. The problem is that the browser hangs while first loading the applet. To get around this, I figured I could use AJAX. The AJAX calls a PHP file which contains callfromjs(). The problem is that the request returns because it's PHP, and it doesn't wait for callfromjs() to retrieve the content. On to my questions: Is there a better way to handle this? If this method seems ok, how can I force the request not to return until the javascript is finished calling the method from the applet?

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• extra AuthorizationRule in web.config AuthorizationSection

  - by H07R0D

  I'm trying to modify the list of allowed users in web.config from a codebehind. <authorization> <allow users="alice, bob"/> <deny users="*"/> </authorization> I successfully retrieve the section I need config = WebConfigurationManager.OpenWebConfiguration("~"); authSection = (AuthorizationSection)config.GetSection("system.web/authorization"); When I iterate looking for the allow rule, I get two of them. foreach (AuthorizationRule rule in authSection.Rules) { if (rule.Action == AuthorizationRuleAction.Allow) { // manage the Users StringCollection } } The first item I get has 'alice' and 'bob' in the Users collection. The SECOND item I get has * Where is this second entry coming from? This is an Allow Rule, not a Deny rule. I could understand the * from a Deny rule. Is there some extra inheritance I'm not aware of?

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• Perl passing argument into eval

  - by ehretf

  I'm facing an issue using eval function. Indeed I have some function name inside a SQL database, my goal is to execute those functions within perl (after retrieve in SQL). Here is what I'm doing, considering that $RssSource-{$k}{Proceed} contains "&test" as a string retrieved from SQL: my $str2 = "ABCD"; eval "$RssSource->{$k}{Proceed}";warn if $@; sub test { my $arg = shift; print "fct TEST -> ", $row, "\n"; } This is working correctly and display: fct TEST -> However I would like to be able to pass $str2 as an argument to $RssSource-{$k}{Proceed} but I don't know how, every syntax I tried return an error: eval "$RssSource->{$k}{Proceed}$str2" eval "$RssSource->{$k}{Proceed}($str2)" eval "$RssSource->{$k}{Proceed}"$str2 eval "$RssSource->{$k}{Proceed}"($str2) May someone tell me how to properly pass an argument to the evaluated function? Thanks a lot for your help Regards. Florent

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