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  • Endless saving of CoreData Context

    - by Robert
    Sometimes I noticed that a 'save:' operation an a ManagedObjectContext never returns and consumes 100% CPU. I'm using an SQL Store in a GarbageCollected environment (Mac OS X 10.6.3). The disk activity shows about 700 KB/s writing. While having a look at the folder that contains the sqlite database file the "-journal" file appears and disappears, appears and disappears, ... This is part of the call graph from the process analysis: 2203 -[NSManagedObjectContext save:] 1899 -[NSPersistentStoreCoordinator(_NSInternalMethods) executeRequest:withContext:] 1836 -[NSSQLCore executeRequest:withContext:] 1836 -[NSSQLCore saveChanges:] 1479 -[NSSQLCore performChanges] ... 335 -[NSSQLCore recordChangesInContext:] ... 20 -[NSSQLCore rollbackChanges] ... 2 -[NSSQLCore prepareForSave:] ... 62 -[NSPersistentStoreCoordinator(_NSInternalMethods) _checkRequestForStore:originalRequest:andOptimisticLocking:] ... 1 -[NSPersistentStore(_NSInternalMethods) _preflightCrossCheck] ... 184 -[NSMergePolicy resolveConflicts:] ... 120 -[NSManagedObjectContext(_NSInternalChangeProcessing) _prepareForPushChanges:] ... Everything a happening in the main GUI thread. Any ideas what I can to do to resolve the problem?

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  • Hash Table question [closed]

    - by Fatimah
    I need your help to solve this program ... Implement a separate chaining hash table that stores strings. You’ll need a hash function that converts string into an index number. Assume the strings will be lowercase words, so 26 characters will suffice.

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  • SQLite: does data type depend on the quotes?

    - by Septagram
    In SQLite, the datatype of a value is associated with the value itself, not with the column type. So suppose we have a table with an integer primary key "id" and an integer column "some_number". If I do a query like this: INSERT INTO mytable (id, some_number) VALUES (NULL, "1234") Will 123 be inserted as an integer or as string? What consequences it will have later for me, say, when I'm comparing it with other value like "234" (as a number 1234 234, as a string "1234" < "234", right?)?

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  • Saving Data to Registry on Windows 7

    - by Jim Fell
    I heard that Windows 7 restricts access to its registry, so that applications cannot write directly to it. Is this so? I am developing an application in C#, and I would like to be able to save things such as port settings, last file used, etc. between sessions. Is the registry still a good option, or is there another preferred means of doing this now? Thanks.

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  • Dealloc'd Predicate crashing iPhone App!

    - by DVG
    To preface, this is a follow up to an inquiry made a few days ago: http://stackoverflow.com/questions/2981803/iphone-app-crashes-when-merging-managed-object-contexts Short Version: EXC_BAD_ACCESS is crashing my app, and zombie-mode revealed the culprit to be my predicate embedded within the fetch request embedded in my Fetched Results Controller. How does an object within an object get released without an explicit command to do so? Long Version: Application Structure Platforms View Controller - Games View Controller (Predicated upon platform selection) - Add Game View Controller When a row gets clicked on the Platforms view, it sets an instance variable in Games View for that platform, then the Games Fetched Results Controller builds a fetch request in the normal way: - (NSFetchedResultsController *)fetchedResultsController{ if (fetchedResultsController != nil) { return fetchedResultsController; } //build the fetch request for Games NSFetchRequest *request = [[NSFetchRequest alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"Game" inManagedObjectContext:context]; [request setEntity:entity]; //predicate NSPredicate *predicate = [NSPredicate predicateWithFormat:@"platform == %@", selectedPlatform]; [request setPredicate:predicate]; //sort based on name NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"name" ascending:YES]; NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor, nil]; [request setSortDescriptors:sortDescriptors]; //fetch and build fetched results controller NSFetchedResultsController *aFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:request managedObjectContext:context sectionNameKeyPath:nil cacheName:@"Root"]; aFetchedResultsController.delegate = self; self.fetchedResultsController = aFetchedResultsController; [sortDescriptor release]; [sortDescriptors release]; [predicate release]; [request release]; [aFetchedResultsController release]; return fetchedResultsController; } At the end of this method, the fetchedResultsController's _fetch_request - _predicate member is set to an NSComparisonPredicate object. All is well in the world. By the time - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section gets called, the _predicate is now a Zombie, which will eventually crash the application when the table attempts to update itself. I'm more or less flummoxed. I'm not releasing the fetched results controller or any of it's parts, and the only part getting dealloc'd is the predicate. Any ideas?

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  • Extract Data from a Website using PHP

    - by 01jayss
    I am trying to get PHP to extract the TOKEN (the uppercase one), USERID (uppercase), and the USER NAME (uppercase) from a web page with the following text. {"rsp":{"stat":"ok","auth":{"token":"**TOKEN**","perms":"read","user":{"id":"**USERID**","username":"**USER NAME**","fullname":"**NAME OF USER**"}}}} (This is from the RTM api, getting the authentication token of the user). How would I go about doing this? Thanks!

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  • ORM Against a Service-Wrapped Data Source

    - by blaster
    We are tasked with migrating an existing set of entities (currently POCOs persisted with NHibernate against an MSSQL database) to now persist to some kind of web service (yet to be built, either RESTful or SOAP-based, and that we control). I like how NHibernate encapsulates the persistence concerns and lets us maintain a logic-rich, persistence-agnostic domain model. Is there any way to make NHibernate talk to a web service at the back end instead of a SQL database directly? In other words, can "service instead of SQL database" be treated as a persistence implementation detail and allow us to continue to use NHibernate? Am I asking the right question? :)

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  • Data binding in gridview column using eval

    - by ROBIN
    I hava grid containing a column for displaying countrynames. I need to display value in that column as contrycode-first 10 letters of country name (in-India) .I tried it using Eval functions with in the item template: <asp:TemplateField> <ItemTemplate> <asp:Label ID="CountryNameLabe" runat="server" Text='<%# Eval("CorporateAddressCountry").SubString(0,6) %>' ></asp:Label> </ItemTemplate> </asp:TemplateField> But it shows error. Can i use custom functions in eval? please help

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  • Sending Data as Instances using Python Sockets

    - by Alice
    I'm working on the networking part of a 2 player game (similar to tetris), and I'm trying to pass the game grid from client to server and vice versa. However, when I tried using send(grid) I get a TypeError: send() argument 1 must be string or read-only buffer, not instance. Is there anyway to circumvent this, or do I have to convert my grid instance into a string and then interpret it from the other side? Thanks in advance!

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  • The standard map/associative-array structure to use in flash actionscript 3?

    - by tstyle
    I'm relatively new to flash, and is confused about what I should use to store and retrieve key value pairs. After some googling I've found various map-like things to choose from: 1) Use a Object: var map:Object = new Object(); map["key"] = "value"; The problem is that it seems to lack some very basic features. For example to even get the size of map I'd have to write a util method. 2) Use a Dictionary What does this standard library class provide over the simple object? It seems silly for it to exist if it's functionally identical to Object. 3) Go download some custom HashMap/HashTable implementation from the web. I've used a lot of modern languages, and this is the first time I haven't been able to find a library implementation of an associative array within 5 minutes. So I'd like to get some best-practice advice from an experienced flash developer. Thanks!

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  • Tree data structure in php

    - by Piyush
    in my application user starts a new tree or get added under a child-user and keep on adding users in branches in such a way- >there are 10 level of tree type structure. >root node contain 1 user and each node(user) can have max 5 child-user in this way tree will be like level 0 = 1 user , level 1 = 5 user, level 2 = 25 user , level 3 = 125 user and so on. I created one MySQL table having columns like- User_id , level, super_id, child1_id, child2_id, child3_id, child4_id, child5_id my question is How can I get all child-user(child to child also) of a particular user at any level do I need to add some more columns in my table??

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  • Hashing Function for Map C++

    - by Josh
    I am trying to determine a hash function which takes an input (i, k) and determines a unique solution. The possible inputs for (i, k) range from 0 to 100. Consider each (i, k) as a position of a node in a trinomial tree. Ex: (0, 0) can diverge to (1, 1) (1, 0) (1, -1). (1, 1) can diverge to (2, 2) (2, 1) (2, 0). Sample given here: http://www.google.com/imgres?imgurl=http://sfb649.wiwi.hu-berlin.de/fedc_homepage/xplore/tutorials/stfhtmlimg1156.gif&imgrefurl=http://sfb649.wiwi.hu-berlin.de/fedc_homepage/xplore/tutorials/stfhtmlnode41.html&h=413&w=416&sz=4&tbnid=OegDZu-yeVitZM:&tbnh=90&tbnw=91&zoom=1&usg=__9uQWDNYNLV14YioWWbrqPgfa3DQ=&docid=2hhitNyRWjI_DM&hl=en&sa=X&ei=xAfFUIbyG8nzyAHv2YDICg&ved=0CDsQ9QEwAQ I am using a map map <double, double> hash_table I need a key value to be determined from pairs (i, k) to hash to to value for that (i, k) So far I was only able to come up with linear functions such as: double Hash_function(int i, int k) { //double val = pow(i, k) + i; //return (val % 4294967296); return (i*3.1415 + k*i*9.12341); } However, I cannot determine a unique key with a certain (i, k). What kind of functions can I use to help me do so?

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  • Passing additional data value to strongly typed partial views in ASP.NET MVC

    - by fearofawhackplanet
    I have an OrderForm domain class, which has property subclasses, something like: interface IOrderForm { int OrderId { get; } ICustomerDetails CustomerDetails { get; set; } IDeliveryDetails DeliveryDetails{ get; set; } IPaymentsDetails PaymentsDetails { get; set; } IOrderDetails OrderDetails { get; set; } } My "Details" view is strongly typed inheriting from IOrderForm. I then have a strongly type partial for rendering each section: <div id="CustomerDetails"> <% Html.RenderPartial("CustomerDetails", Model.CustomerDetails); %> </div> <div id="DeliveryDetails"> <% Html.RenderPartial("DeliveryDetails", Model.DeliveryDetails); %> </div> ... etc This works ok up to this point, but I'm trying to add some nice ajax bits for updating some parts of the order form, and I've realised that each of my partial views also needs access to the IOrderForm.OrderId. Whats the easiest way to give my partials access to this value?

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  • C# convert binary data to string?

    - by Tom
    Hi, just going through the registry retrieving values and binary is making my file outputer fall. I was wondering how could I convert Subkey.getValue(value[i]) into a String if the Value type is binary? Thank you in advance

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  • Linq2SQL or EntityFramework and databinding

    - by rene marxis
    is there some way to do databinding with linq2SQL or EntityFramework using "typed links" to the bound property? Public Class Form1 Dim db As New MESDBEntities 'datacontext/ObjectContext Dim bs As New BindingSource Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load bs.DataSource = (From m In db.PROB_GROUP Select m) grid.DataSource = bs TextBox1.DataBindings.Add("Text", bs, "PGR_NAME") TextBox1.DataBindings.Add("Text", bs, db.PROB_GROUP) '**<--- Somthing like this** End Sub End Class I'd like to have type checking when compiling and the model changed.

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  • Getting a count of users each day in Mondrian MDX

    - by user1874144
    I'm trying to write a query to give me the total number of users for each customer per day. Here is what I have so far, which for each customer/day combination is giving the total number of user dimension entries without splitting them up by customer/day. WITH MEMBER [Measures].[MyUserCount] AS COUNT(Descendants([User].CurrentMember, [User].[User Name]), INCLUDEEMPTY) SELECT NON EMPTY CrossJoin([Date].[Date].Members, [Customer].[Customer Name].Members) ON ROWS, {[Measures].[MyUserCount]} on COLUMNS FROM [Users]

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  • Joomla! 2.5 use login data from another database

    - by user1756746
    I have a hard question. I'd like the joomla login does not use its own database for users/password but I want to use my database users with my table fields, my passwords etc.. I don't know from where start, I thought I could edit database request for login to my db or create a little script to automatically add the users on joomla database. I tried to see components/com_users/views/login/tmpl/default_login.php but it seems that there is nothing. Can someone help me figure out what to change? Maybe the simple thing is import my database users into database user joomla, is there any plugin or something else that you know? p.s. I use Clarion theme build on Gantry framework, Joomla! 2.5.6 Stable, PHP 5.2.17

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  • Information Modeling

    - by Betamoo
    The sensor module in my project consists of a rotating camera, that collects noisy information about moving objects in the surrounding environment. The information consists of distance, angle and relative change of the moving objects.. The limiting view range of the camera makes it essential to rotate the camera periodically to update environment information... I was looking for algorithms / ways to model these information, in order to be able to guess / predict / learn motion properties of these object.. My current proposed idea is to store last n snapshots of each object in a queue. I take weighted average of positions and velocities of moving object, but I think it is a poor method... Can you state some titles that suit this case? Thanks

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  • How to access a subset of XML data in Java when the XML data is too large to fit in memory?

    - by Michael Jones
    What I would really like is a streaming API that works sort of like StAX, and sort of like DOM/JDom. It would be streaming in the sense that it would be very lazy and not read things in until needed. It would also be streaming in the sense that it would read everything forwards (but not backwards). Here's what code that used such an API would look like. URL url = ... XMLStream xml = XXXFactory(url.inputStream()) ; // process each <book> element in this document. // the <book> element may have subnodes. // You get a DOM/JDOM like tree rooted at the next <book>. while (xml.hasContent()) { XMLElement book = xml.getNextElement("book"); processBook(book); } Does anything like this exist?

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  • C#: Passing data to forms UI using BeginInvoke

    - by Bi
    Hi I am a C# newbie and have a class that needs to pass row information to a grid in the windows form. What is the best way to do it? I have put in some example code for better understanding. Thanks. public class GUIController { private My_Main myWindow; public GUIController( My_Main window ) { myWindow = window; } public void UpdateProducts( List<myProduct> newList ) { object[] row = new object[3]; foreach (myProduct product in newList) { row[0] = product.Name; row[1] = product.Status; row[2] = product.Day; //HOW DO I USE BeginInvoke HERE? } } } And the form class below: public class My_Main : Form { //HOW DO I GO ABOUT USING THIS DELEGATE? public delegate void ProductDelegate( string[] row ); public static My_Main theWindow = null; static void Main( ) { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); theWindow = new My_Main(); Application.Run(theWindow); } private void My_Main_Load( object sender, EventArgs e ) { /// Create GUIController and pass the window object gui = new GUIController( this ); } public void PopulateGrid( string[] row ) { ProductsGrid.Rows.Add(row); ProductsGrid.Update(); } } Thanks!

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  • coredate data not show at tableView

    - by pengwang
    hello,i used coredate at the tableView,when i enter the viewControl i will call: dispatch_queue_t downloadQueue = dispatch_queue_create("socket login", NULL); dispatch_async(downloadQueue, ^{ NSManagedObjectContext *managedObjectContext =[self getManagedObjectContext]; noticListArr=[[CoreDataManager sharedInstance] readEvent:@"NotificationEntity" SortDescriptor:nil managedObjectContext:managedObjectContext]; NSLog(@"refreshData.count:%d ",noticListArr.count); for(int i=0;i<noticListArr.count;i++){ NotificationEntity *notificationEntity=[noticListArr objectAtIndex:i]; NSLog(@"notificationEntity.name:%@ ",notificationEntity.name); NSLog(@"notificationEntity.describeString:%@ ",notificationEntity.describeString); NSLog(@"notificationEntity.source:%@", notificationEntity.source); } }); dispatch_async(dispatch_get_main_queue(), ^{ [self.tableView1 reloadData]; }); dispatch_release(downloadQueue); all log have value but when i used - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"NotificationViewCell"; NotificationViewCell *cell = (NotificationViewCell*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier]; NotificationEntity *notificationEntity=(NotificationEntity *)[noticListArr objectAtIndex:indexPath.row]; NSLog(@"tableViewnoticListArr.count:%d ",noticListArr.count); NSLog(@"indexPath.row:%d ",indexPath.row); NSLog(@"notificationTable.avatarsmall:%@", notificationEntity.avatarsmall); NSLog(@"notificationTable.source:%@", notificationEntity.source); NSLog(@"notificationTable.name:%@", notificationEntity.name); NSLog(@"notificationTable.describeString:%@ ",notificationEntity.describeString); } only NSLog(@"tableViewnoticListArr.count:%d ",noticListArr.count); NSLog(@"indexPath.row:%d ",indexPath.row); can give me correct result.but all notificationEntity.name notificationEntity.describeString is null.i donot know why at the tabelview cell all value of notificationEntity is null.

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  • PHP contact form sends empty data

    - by Alan Lawlessness
    I am trying to create a HTML5 contact form compatible with computer and mobile devices, when I clicked on send message it jumps into a blank white screen. I do get a email but it contains no information. I am quite new with PHP. For www.rare1.ca/test: <!DOCTYPE html> <html> <head> <title>Responsive HTML5/CSS3 template</title> <meta charset="utf-8" /> <meta name = "viewport" content = "width=device-width, maximum-scale = 1, minimum- scale=1" /> <link rel="stylesheet" type="text/css" href="css/default.css" media="all" /> <link rel="stylesheet" href="css/flexslider.css" type="text/css" /> <link href='http://fonts.googleapis.com/css?family=PT+Sans' rel='stylesheet' type='text/css' /> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"> </script> <script src="js/jquery.flexslider.js"></script> <script src="js/default.js"></script> <!--[if lt IE 9]> <script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script> <script src="js/respond.min.js"></script> <![endif]--> </head> <body> <div id="pagewidth"> <header id="header"> <div class="center"> <nav id="mainNav"> <ul> <li class="active"><a href="#pagewidth"><span>gallery</span></a></li> <li></li> <li></li> <li></li> <li></li> <li><a href="#contactUs"><span>contact us</span></a></li> </ul> </nav> </div> </header> <div id="content"> <section class="row"> <div class="center"> <h1><img src="img/logo.gif" width="142" height="78"></h1> <strong class="subHeading">Coming soon</strong> <div class="gallery"> <ul class="slides"> <li><img src="img/img-gallery.jpg" alt="image" /></li> <li><img src="img/img-gallery2.jpg" alt="image" /></li> <li><img src="img/img-gallery3.jpg" alt="image" /></li> </ul> </div> <div class="buttons"></div> </div> </section> <section id="contactUs" class="row grey"> <div class="center"> <h1>Contact Us</h1> <strong class="subHeading">lorem ipsum dolor sit amet, consectetur adipiscing elit</strong> <div class="columns"> <div class="half"> <form action="sendemail.php" class="form"> <fieldset> <h2>Feedback form</h2> <div class="formRow"> <div class="textField"><input type="text" name="Name" id="name" placeholder="Your name ..." /></div> </div> <div class="formRow"> <div class="textField"><input type="text" name="Email" id="email" placeholder="Your Email ..." /></div> </div> <div class="formRow"> <div class="textField"><textarea name="Message" cols="20" rows="4" placeholder="Your message ..."></textarea> </div> </div> <div class="formRow"> <button class="btnSmall btn submit right"> <span>Send Message</span> </button> </div> </fieldset> </form> </div> <div class="half"> <h2>How to find us</h2> <div id="map"> <div class="imgHolder"><img src="img/map.jpg" alt="google map" /></div> </div> </div> </div> </div> </section> </div> <footer id="footer"> <div class="center"> </div> </footer> </div> </body> </html> <?php // This is the script for sending email. // change the email address below to your own email address. $mailTo = '[email protected]'; $name = htmlspecialchars($_POST['Name']); $mailFrom = htmlspecialchars($_POST['Email']); $message_text = htmlspecialchars($_POST['Message']); $headers = "From: $name <$mailFrom>\n"; $headers .= "Reply-To: $name <$mailFrom>\n"; $message = $message_text; mail($mailTo, $subject, $message, $headers ); ?>

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