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• Display MySQL BLOB'd image on webpage without separate script (PHP)

  - by robhardgood

  So I've got some images stored in a MySQL database as BLOB's (I know it's better to just store the directory and do it that way, but this is what I need to do for now) and I need to display them on a webpage. Now, I know how to make a script and give it an image header and pull the img src from there, but I have a lot of images from different places for different uses, so I'd have to make a ton of these scripts and I'd rather not clutter up my files like that. Anyway, does anyone know of a function or something I can use to display the image that will run on the same page?

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• Mat matrix multiplication, openCV?

  - by facebook-1593205594

  I initialized two Mat images as: Mat ft=Mat::zeros(src.rows,src.cols,CV_32FC1),h=Mat::zeros(src.rows,src.cols,CV_32FC1); and then i have some calculations: ft has fourier transform stored for an image, and h has matrix for Laplacian filtering in fourier domain.......they both have same dimensions, and then i did multiplication of them using both h*ft and gemm(h,ft,1,NULL,0,temp); function call but while executing it shows some problems..... it reads like this: opencv error assertion failed (some long code and at last says something about gemm in ....matmul.cpp)......termination called after throwing exception of 'cv::exception'

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• What does double? mean in C# ?

  - by Nikhil

  Hi, While reading the code of the NUnit project's assert class, I came across this particular construct - public static void AreEqual(double expected, double? actual, double delta) { AssertDoublesAreEqual(expected, (double)actual, delta ,null, null); } In this function the second input parameter is entered as "double?". The interesting thing is that this code compiles without issue in VS2010 (c# 4.0). Anyone know why this is NOT throwing an error ? Why is "double?" considered a valid keyword and is there any special significance to the "?".

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• Flex BarChart and XML

  - by theband

  <mx:BarChart id="barChart" showDataTips="true" dataProvider="{testInfo}" width="100%" height="100%"> <mx:verticalAxis> <mx:CategoryAxis categoryField="ProjectName"/> </mx:verticalAxis> <mx:series> <mx:BarSeries id="barSeries" yField="ProjectName" xField="State" displayName="State" /> </mx:series> </mx:BarChart> I get the Project Names in the y -Axis, but nothing is displayed in the Chart. Could not construe on what's going as wrong. private function xmlHandler(evt:ResultEvent):void{ testInfo = evt.result.Project; }

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• WordPress - Each page of paged posts all show same posts

  - by j-man86

  I set up a pagination function for my wordpress blog. When clicking to the next page, the URL is correct: "/page/1", "/page/2", "/page/3" etc, but the actual posts don't change from page to page (page 2 and page 3 still display the first page of posts). Here's the code I'm using for the loop: <?php $paged = (get_query_var('paged')) ? get_query_var('paged') : 1; $sticky=get_option('sticky_posts'); $args=array( 'offset' => 1, 'category__not_in' => array(-6), 'paged'=>$paged, 'showposts' => 6, ); query_posts($args); if ( $wp_query->have_posts() ) : while ( $wp_query->have_posts() ) : $wp_query->the_post(); ?> Any help/insight would be much appreciated. Thank you!

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• C# threads - Posting messages between threads

  - by Harsha

  Hi All, I am working on a project which involves reusing as well as migrating some of the existing MFC code to C#. The current code in MFC, creates some threads and uses ::PostthreadeMessage() and ON_THREAD_MESSAGE(msg,func) for inter thread asynchronous communication through messages. ::PostthreadeMessage() - sends a message to a particular thread id. ON_THREAD_MESSAGE(msg,func) - calls the function(func) when a message(msg) is received. Since i am not much aware of the threading interfaces in C#, i tried to search for similar API's in C#, but was not able to find any. It would be great, if somebody can help me in finding the appropriate functions for this purpose in C# Thanks, Harsha

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• Delphi Prism getting Unknown Identifier "DllImport" error

  - by Robo

  I'm trying to call Window's SendMessage method in Delphi Prism, I've declared the class as follow: type MyUtils = public static class private [DllImport("user32.dll", CharSet := CharSet.Auto)] method SendMessage(hWnd:IntPtr; Msg:UInt32; wParam:IntPtr; lParam:IntPtr):IntPtr; external; protected public end; When I tried to compile, I get the error Unknown identifier "DllImport" I used this as an example, http://stackoverflow.com/questions/2708520/how-to-call-function-createprocess-in-delphi-prism and the syntax looks the same. Is there a setting I need to enable, or do I have a syntax error?

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• Avoid implicit conversion from date to timestamp for selects with Oracle 11g using Hibernate

  - by sapporo

  I'm using Hibernate 3.2.1 criteria queries to select rows from an Oracle 11g database, filtering by a timestamp field. The field in question is of type java.util.Date in Java, and DATE in Oracle. It turns out that the field gets mapped to java.sql.Timestamp, and Oracle converts all rows to TIMESTAMP before comparing to the passed in value, bypassing the index and thereby ruining performance. One solution would be to use Hibernate's sqlRestriction() along with Oracle's TO_DATE function. That would fix performance, but requires rewriting the application code (lots of queries). So is there a more elegant solution? Since Hibernate already does type mapping, could it be configured to do the right thing?

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• Access violation after GetInterface/QueryInterface in Delphi

  - by W55tKQbuRu28Q4xv

  Hi everyone! First, I'm very new in Delphi and COM, but I should build COM application in Delphi. I read a lot of articles and notes on the internets, but COM and COM in Delphi are still not clear to me. My sources - http://www.everfall.com/paste/id.php?wisdn8hyhzkt (about 80 lines). I try to make a COM Interface and Impl class - it works if I call an interface method from Delphi (I create an impl object via TestClient.Create), but if I try to create an object from outer world (from Java, via com4j) my application crashed with following exception: Project Kernel.exe raised exception class $C0000005 with message 'access violation at 0x00000002: read of address 0x00000002'. If I set a breakpoint in QueryInterface - it breaks, but when I come out from function - all crashes. What I'm doing wrong? What I still missing? What I can/should read about COM (in Delphi) to avoid dumb questions like this?

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• open_basedir vs sessions

  - by liquorvicar

  On a virtual hosting server I have the open_basedir set to .:/path/to/vhost/web:/tmp:/usr/share/pear for each virtual host. I have a client who's running WordPress and he's complaining about open_basedir errors thus: PHP WARNING: file_exists() [function.file-exists]: open_basedir restriction in effect. File(/var/lib/php/session/sess_42k7jn3vjenj43g3njorrnrmf2) is not within the allowed path(s): (.:/path/to/vhost/web:/tmp:/usr/share/pear) So the PHP session save_path isn't included in open_basedir but sessions across all sites on the server seems to be working fine apart from in this intermittent instance. I thought that perhaps the default session handler ignored open_basedir and this warning was caused by WP accessing the session file directly. However from what I can see PHP 5.2.4 introduced open_basedir checking to the session.save_path config: http://www.php.net/ChangeLog-5.php#5.2.4 (I am on PHP 5.2.13). Any ideas?

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• NETWORK_ERROR: XMLHttpRequest Exception 101

  - by pawan Mangal

  I am getting this Error NETWORK_ERROR: XMLHttpRequest Exception 101 when trying to get XML content from one site. Here is my code var xmlhttp; if(window.XMLHttpRequest) { xmlhttp = new XMLHttpRequest(); } if (xmlhttp==null) { alert ("Your browser does not support XMLHTTP!"); return; } xmlhttp.onReadyStateChange=function() { if(xmlhttp.readyState==4) { var value =xmlhttp.responseXML; alert(value); } } xmlhttp.open("GET",url,false); xmlhttp.send(); //alert(xmlhttp.responseXML); } xmlhttp.open("GET",url,false); xmlhttp.send(null); Does any one have a solution?

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• Stop a custom submit button from firing the form validation on a CCK form

  - by kidrobot

  I've added a submit button inside a fieldgroup on a CCK form using hook_form_alter as follows: function mymodule_form_alter(&$form, $form_state, $form_id) { if ($form_id == 'object_node_form') { $form['group_wikipedia']['search'] = array( '#type' => 'submit', '#value' => t('Search Wikipedia'), '#name' => 'searchwiki', '#submit' => array('mymodule_searchwiki_submit'), ); } } When I press the button, the validation handlers for the full form eg. checks for required fields, run as though I have pressed the 'Submit' button at the end of the form. I thought that changing the #name property from 'op' to 'searchwiki' would prevent this kind of mix-up, but not so. Does anyone know a workaround for this?

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• C# Resource Array

  - by user472875

  Hi, I have a bunch of pictures I'm using in a C# project, and I'm trying to initialize them all for later use. There are over 50 of them and they all have the same name format Properties.Resources._#, where # is the picture number. What I'm trying to do is something like: for(int i = 0; i < 100; i++) { pics[i] = Properties.Resources._i; } How would I go about embedding the index into the name? Thanks, and happy holidays. EDIT: Just realized that if I had a way to embed the index in the name, I could just have a function that returns the specific picture based on the number given, so that would work too.

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• URL on apache server does not default to the .php file after / has been added

  - by jeffkee

  Generally a url that looks like this: http://www.domain.com/product.php/12/ will open up product.php and serve the /12/ as request parameters, which then my PHP script can process to pull out the right product info. However when I migrated this whole site, after developing it, to a new server, I get a 404 error, because on that server it's not defaulting to the mother directory/file in case of an absence of requested directories. I vaguely remember learning that this is generally a common apache function but I can't seem to recall how to set it up or how to manipulate it.. if there's an .htaccess method to achieve this that would be great.

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• Flash/Flex: play embedded AAC audio?

  - by aaaidan

  I'm pretty sure of the answer, but just wanted to check with you all. Is it possible to play an embedded AAC file in Flash/Flex somehow? I know you can playback embedded MP3 files, but I hear that you can't do that with AAC. Anyone know any sneaky ways to get around this? By way of illustration, here's come code. [Embed(source='../../audio/music02.m4a', mimeType="audio/aac")] private static const __ExampleMp4File:Class; public var myMp4Sound:Sound = new __ExampleMp4File(); public function EmbeddedAudioTest() { myMp4Sound.play(); }

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• webbrowser control on form2 vb windows application

  - by user228058

  Hi, I have a vb windows application with 2 forms, where form2 is called from form1 using form2.showdialog() I added a web browser control to form2, and I'm getting the following error at the point where form2 is called: Current thread must be set to single thread apartment (STA) mode before OLE calls can be made. Ensure that your Main function has STAThreadAttribute marked on it. I tried: 1) adding STAThread() to the form_load() 2) I added a module to my application, and created a sub main(), with the STAThread attribute applied to it 3) I marked the sub startup() with STAThread() And none of this helped. Any tips on how to get around this issue? Thanks, rcpg

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• Spawn a background process in Ruby

  - by Dave DeLong

  I'm writing a ruby bootstrapping script for a school project, and part of this bootstrapping process is to start a couple of background processes (which are written and function properly). What I'd like to do is something along the lines of: `/path/to/daemon1 &` `/path/to/daemon2 &` `/path/to/daemon3 &` However, that blocks on the first call to execute daemon1. I've seen references to a Process.spawn method, but that seems to be a 1.9+ feature, and I'm limited to Ruby 1.8. I've also tried to execute these daemons from different threads, but I'd like my bootstrap script to be able to exit. So how can I start these background processes so that my bootstrap script doesn't block and can exit (but still have the daemons running in the background)? Thanks!

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• Cython - properly declaring C funs

  - by deepblue

  I'm having trouble with running a bare example. I'm using this to declare a function in Cython coming from cinterf.h header: cdef extern from 'cinterf.h': int xsb_init_string(char* p_xsb_path) The declaration in the C header file is: DllExport extern int call_conv xsb_init_string(char *); both DllExport and call_conv are macros defined elsewhere, and resolve to GCC compiler directives. do I have to use those as well inside cdef to fully match the declaration? When I call xsb_init_string() as: xsb_init_string('some string') The python interpreter gives me: 'ImportError: ./py_ext.so: undefined symbol: xsb_init_string' Am I declaring the xsb_init_string() signature properly, inside cdef?

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• Urllib's urlopen breaking on some sites (e.g. StackApps api)

  - by Edan Maor

  I'm using urllib2's urlopen function to try and get a JSON result from the StackOverflow api. The code I'm using: >>> import urllib2 >>> conn = urllib2.urlopen("http://api.stackoverflow.com/0.8/users/") >>> conn.readline() The result I'm getting: '\x1f\x8b\x08\x00\x00\x00\x00\x00\x04\x00\xed\xbd\x07`\x1cI\x96%&/m\xca{\x7fJ\... I'm fairly new to urllib, but this doesn't seem like the result I should be getting. I've tried it in other places and I get what I expect (the same as visiting the address with a browser gives me: a JSON object). Using urlopen on other sites (e.g. "http://google.com") works fine, and gives me actual html. I've also tried using urllib and it gives the same result. I'm pretty stuck, not even knowing where to look to solve this problem. Any ideas?

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• Google Gears - Database - VACUUM

  - by Sirber

  With this code: var db = google.gears.factory.create('beta.database'); db.open('cominar'); db.execute('CREATE TABLE IF NOT EXISTS Ajax (AJAX_ID INTEGER PRIMARY KEY AUTOINCREMENT , MODULE TEXT, FUNCTION TEXT, CONTENT_JSON TEXT);'); db.execute('VACUUM;'); // nettoye la DB I'm trying to clean the database (VACUUM) the database at each initialisation but I get this error: Uncaught Error: Database operation failed. ERROR: authorization denied DETAILS: not authorized The database was created by me (the same page). Thank you!

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• C# Multithreading File IO (Reading)

  - by washtik

  We have a situation where our application needs to process a series of files and rather than perform this function synchronously, we would like to employ multi-threading to have the workload split amongst different threads. Each item of work is: 1. Open a file for read only 2. Process the data in the file 3. Write the processed data to a Dictionary We would like to perform each file's work on a new thread? Is this possible and should be we better to use the ThreadPool or spawn new threads keeping in mind that each item of "work" only takes 30ms however its possible that hundreds of files will need to be processed. Any ideas to make this more efficient is appreciated.

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• Using Graphics2D to overlay text on a BufferedImage and return a BufferedImage

  - by Andrew Bolster

  I have checked similarly named questions, but they don't answer this use case. Basically, I was to overlay some text (text) at a given coordinate (x,y) I have the below function in a package; protected BufferedImage Process2(BufferedImage image){ Graphics2D gO = image.createGraphics(); gO.setColor(Color.red); gO.setFont(new Font( "SansSerif", Font.BOLD, 12 )); gO.drawString(this.text, this.x, this.y); System.err.println(this.text+this.x+this.y); return image; } I feel like im missing something patently obvious; every reference to Graphics2D I can find is dealing with either games or writing directly to a file but I just want a BufferedImage returned. with the overlay 'rendered' In the current code, the image appears out the end unchanged. Thanks!

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• Trigger event after GDirections.loadFromWaypoints in Google Maps API

  - by Soldarnal

  I'm attempting to add some text to the directions results the Google Maps API returns to the specified div (directionsPanel). This code below would work fine, except that the jQuery line fires before loadFromWaypoints has finished modifying the DOM. If I run that line by manually triggering it after the directions content has finished loading, it executes as expected. directions = new GDirections(map, directionsPanel); directions.loadFromWaypoints(waypoints); $("td[@jscontent='address']").append(" some content"); How can I add some sort of listener (on perhaps either the loadFromWaypoints callback function or the directionsPanel div itself) to execute my jQuery line after the DOM has finished reloading?

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• How to learn high-level Java web development concepts

  - by titaniumdecoy

  I have some experience writing web applications in Java for class projects. My first project used Servlets and my second, the Stripes framework. However, I feel that I am missing the greater picture of Java web development. I don't really understand the web.xml and context.xml files. I'm not sure what constitutes a Java EE application as opposed to a generic Java web application. I can't figure out how a bean is different from an ordinary Java class (POJO?) and how that differs from an Enterprise Java Bean (EJB). These are just the first few questions I could think of, but there are many more. What is a good way to learn how Java web applications function from the top down rather than simply how to develop an application with a specific framework? (Is there a book for this sort of thing?) Ultimately, I would like to understand Java web applications well enough to write my own framework.

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• JQuery UI: Disable accordion tab?

  - by Rosarch

  I have a JQuery UI accordion that contains different parts of the user workflow. I would like to disable accordion "tabs" that the user hasn't reached yet. (So if the user hasn't signed in yet, he can't yet publish content, etc.) Then, as the user completes the necessary steps, more tabs will become enabled. Is there a way to do this? This doesn't work, even as a way to prevent any tabs from changing: $("#accordion").accordion({ changestart: function(event, ui) { return false; } });

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