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• How to detect image orientation (text)

  - by Maciej

  My program is working with fax documents stored as separate bitmaps I wonder if there is a way to detect automatically page orientation (vertical or horizontal) to show image preview for user in right order (meant rotate if neccesary) Any advices much appreciated! EDIT: Clarification: When Faxmachine receives multi-page document it saves each page as separate TIFF file. My app has built-in viewer displaying those files. All files are scaled to A4 format and saved in TIFF (so there is no change to detect orientation by height/width parameters) My viewer displays images in portrait mode by default What I'd like to do is automagically detect situation when org document was printed in landscape mode (eg wide Excel tables) then I'd like to show rotated preview for end user to speed up preview process Obviously there are 4 possible fax orientation portrait / landscape x 2 kind of rotations. I'm even interested simplified solution detecting when org doc was landscape or portrait (I've noticed most of landscape docs needs to be rotated clockwise)

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• Suggest Sphinx index scheme

  - by htf

  Hi. In a MySQL database I have documents of different type: some have text content, meta keys, descriptions, others have code, SKU number, size and brand name and so on. The problem is, I have to search something in all of these documents and then display a single page, where the results will be grouped by the document type, such as help page, blog post, item... It's not clear for me how to implement the Sphinx index: I want to have a single index to speed up queries, but since different docs have different structure - how can I group them? I was thinking about just concatenating them, but it just doesn't feel right.

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• Using code from this site

  - by user553798

  Hi, The legal section of this site mentions that all code by the contributors is licensed under the Creative Commons Attribution Share Alike License. Does this mean that I have to attribute the submitter even if the code in question is a few lines amongst hundreds or thousands of lines of code? What if I use code from a book or SDK? For eg; If I use the sample code from Google's Android SDK documentation, does that mean I need to attribute Google every time I write an app, after all it would be impossible to write an app without consulting the SDK docs, atleast initially... I am totally confused :S

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• Persisting non-entity class that extends an entity (jpa) - example?

  - by Michal Minicki

  The JPA tutorial states that one can have a non-entity that extends entity class: Entities may extend both entity and non-entity classes, and non-entity classes may extend entity classes. - http://java.sun.com/javaee/5/docs/tutorial/doc/bnbqa.html Is it possible to persist such structure? I want to do this: @Entity abstract class Test { ... } class FirstConcreteTest extends Test { ... } // Non-ntity class SecondConcreteTest extends Test { ... } // Non-entity Test test = new FirstConcreteTest(); em.persist(test); What I would like it to do is to persist all fields mapped on abstract Test to a common database table for all concrete classes (first and second), leaving all fields of first and second test class unpersisted (these can contain stuff like EJBs, jdbc pools, etc). And a bonus question. Is it possible to persist abstract property too? @Entity abstract class Test { @Column @Access(AccessType.PROPERTY) abstract public String getName(); } class SecondConcreteTest extends Test { public String getName() { return "Second Concrete Test"; } }

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• Annotations: methods vs variables

  - by Zenzen

  I was always sure (don't know why) that it's better to add annotations to variables, but while browsing the Hibernate doc http://docs.jboss.org/hibernate/stable/annotations/reference/en/html_single/#entity-hibspec-collection I noticed they tend to annotate the methods. So should I put my annotations before methods, like this: @Entity public class Flight implements Serializable { private long id; @Id @GeneratedValue public long getId() { return id; } public void setId(long id) { this.id = id; } } Or is it better to do it like this: @Entity public class Flight implements Serializable { @Id @GeneratedValue private long id; public long getId() { return id; } public void setId(long id) { this.id = id; } } Or maybe there's no difference?

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• Does anyone use AODL in a real application?

  - by HyperQuantum

  We are currently using the Excel interop API in .NET to generate simple spreadsheet documents from a template. So we load the template first, insert some rows, fill in some data (dates, text, and numbers), and make Excel visible so that the user can print or save the document we just generated. But I'd like to get rid of the Excel dependency, and switch to the ODF format as well. Googling suggests AODL (C# libs for generating ODF docs) as the most obvious solution. But their last release is 1.3.0.0 BETA, and seems to be 3 years old. So I'm not sure if it's a good idea to depend on a potentially dead project... In that case, I'd need to find another solution. Any ideas? Or maybe someone could assure me that AODL is still alive?

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• Tabulated log file format with the python logging system

  - by yorjo

  Hi everybody, I'm using the python logging module with the "native" configuration file support (config.fileconfig) as describe in the documentation here : http://docs.python.org/library/logging.html (see the logging.conf file) I was wondering if it's possible to supply a tabulated data format in the configuration file? The sample configuration file is the following: [formatter_simpleFormatter] format=%(asctime)s - %(name)s - %(levelname)s - %(message)s I though that using the \t in the format would be enough but it doesn't. format=%(asctime)s\t%(name)s\t%(levelname)s\t%(message)s\t If I do so it print \t in the result. I tried a couple of thing without success. I suppose it's really easy to do but I don't find it! How can I do that?

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• Get text when enter is pressed in a text box in wxPython

  - by Sam

  I have a (single line) TextCtrl. The user types data into this. When they press enter, the contents of the box need to be extracted so they can be processed. I can't figure out how to catch enter being pressed. According to the docs, with the style wx.TE_PROCESS_ENTER set on my TextCtrl, it should generate a wx.EVT_COMMAND_TEXT_ENTER event when enter is pressed in the box, which I could then catch. However, wx.EVT_COMMAND_TEXT_ENTER seems not to exist (I get "module has no attribute EVT_COMMAND_TEXT_ENTER), so I'm a bit stuck. Googling just gets a couple of hits of people complaining wx.EVT_COMMAND_TEXT_ENTER doesn't work, so I guess I need another way of doing it.

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• Open two new tabs using Javascript

  - by Permana

  I have this situation: There are a login page with a login form (form action is $_SERVER['PHP_SELF']). When user login, it will check what application the user can access and open all the application that available for that user in new tab. If user can access application (for example) 'Docs' and 'Sites', it will open 2 tabs. I Open new tab using window.open('app1.html','_newhtml');, some people say that it only works in Firefox. It's OK, no big deal for me. The problem is, It only open 1 tab, although I write it 2 times window.open('app1.html','_newhtml'); window.open('app2.html','_newhtml'); How can I open 2 tabs? are there any hacks from server side or client side programming?

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• from OutputStream to a File Stream

  - by Gabriele

  I want to save my DOM Document as an XML file. I follow this tutorial: http://java.sun.com/j2ee/1.4/docs/tutorial/doc/JAXPXSLT4.html So, this is my code: ... TransformerFactory tFactory = TransformerFactory.newInstance(); Transformer transformer = tFactory.newTransformer(); DOMSource source = new DOMSource(doc); StreamResult result = new StreamResult(System.out); transformer.transform(source, result); but instead of System.out, I want to save in a file the result. How can I do this?

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• Integer v/s int

  - by Siddhartha

  Read this on the oracle docs java.lang page: Frequently it is necessary to represent a value of primitive type as if it were an object. The wrapper classes Boolean, Character, Integer, Long, Float, and Double serve this purpose. I'm not sure I understand why these are needed. It says they have useful functions such as equals(). But if I can do (a==b), why would I ever want to declare them as Integer, use more memory and use equals()? How does the memory usage differ for the 2?

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• Start diving into large open source projetcs

  - by Vanangamudi

  How to start learning and reading the source of large and complex projects like Blender3D and Gimp, for instance. Since the developers busy improving it and there is no docs exist at present, how do we start developing and customizing these projects. Linux kernel deserve to have several books on its code, also these kind of project do deserve the same. And there are no unit tests available for this kind of projects. Say I'm going to read and understand the source code blender. How do I start. How to setup the development environment for developing the app? If it includes several dependencies, and assume that their source code also available how to setup this kind of inter-related, coherent source code to debug?

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• How to store Hierarchical K-Means tree for a large number of images, using Opencv?

  - by AquaAsh

  I am trying to make a program that will find similar images from a dataset of images. The steps are 1)extract SURF descriptors for all images 2)store the descriptors 3)Apply knn on the stored descriptors 4)Match the stored descriptors to the query image descriptor using KNN Now each images SURF descriptor will be stored as Hierarchical k means tree, now do I store each tree as a separate file or is it possible to build some sort of single tree with all the images descriptors and updated as images are added to dataset. This is the paper I am basing the program on www.ijest.info/docs/IJEST10-02-03-13.pdf.

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• Are volatile data members trivially copyable?

  - by Lightness Races in Orbit

  Whilst writing this answer I realised that I'm not as confident about my conclusions as I usually would ensure before hitting Post Your Answer. I can find a couple of reasonably convincing citations for the argument that the trivial-copyability of volatile data members is either implementation defined or flat-out false: https://groups.google.com/forum/?fromgroups=#!topic/comp.std.c++/5cWxmw71ktI http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48118 http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2010/n3159.html#496 But I haven't been able to back this up in the standard1 itself. Particularly "worrying" is that there's no sign of the proposed wording change from that n3159 issues list in the actual standard's final wording. So, what gives? Are volatile data members trivially copyable, or not? 1   C++11

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• What's the reason why core data takes care of the life-cycle of modeled properties?

  - by mystify

  The docs say that I should not release any modeled property in -dealloc. For me, that feels like violating the big memory management rules. I see a big retain in the header and no -release, because Core Data seems to do it at any other time. Is it because Core Data may drop the value of a property dynamically, at any time when needed? And what's Core Data doing when dropping an managed object? If there's no -dealloc, then how and when are the properties getting freed up?

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• Does Oracle 11g automatically index fields frequently used for full table scans?

  - by gustafc

  I have an app using an Oracle 11g database. I have a fairly large table (~50k rows) which I query thus: SELECT omg, ponies FROM table WHERE x = 4 Field x was not indexed, I discovered. This query happens a lot, but the thing is that the performance wasn't too bad. Adding an index on x did make the queries approximately twice as fast, which is far less than I expected. On, say, MySQL, it would've made the query ten times faster, at the very least. I'm suspecting Oracle adds some kind of automatic index when it detects that I query a non-indexed field often. Am I correct? I can find nothing even implying this in the docs.

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• How might you unobtrusively enhance the jQuery Datepicker class?

  - by Teflon Ted

  You can pass special strings into jQuery's Datepicker class setDate() method like "+7" which will be translated into "7 days from today": http://docs.jquery.com/UI/Datepicker#method-setDate But you can't get that "+7" back out. When you call getDate() you get the calculated resulting date. I have a use case where I need to pull out the special string "+7" for propagation. One chunk of code is passing a special string into the Datepicker and passing the Datepicker over to another chunk of code which pulls out the date, but the latter sometimes needs to know the special string rather than the calculated date. So I need to enhance the Datepicker tool to (a) store the special code internally and (b) expose it via a method like getOriginallyPassedInDate() or some such. I'm not a jQuery/Javascript ninja so I could really use some guidance on how I might preferably-unobtrusively add the necessary functionality to the Datepicker class, the way you might monkey-patch an object in Ruby I'm guessing.

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• Google app engine sessions now supported???

  - by user246114

  Hi, I thought google app engine did not support sessions (last time I checked was a few months ago). Now I was searching again for it and saw this: http://code.google.com/appengine/docs/java/config/appconfig.html#Enabling_Sessions says it supports: javax.servlet.http.HttpSession does this mean we have servlet session support now? If so, does anyone have an example of using this? I wanted to create my own User class and support user login and session management (I know app engine already supports this for google users, but wanted my own users for various requirements) Thanks!

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• Documented process for using facebook connect for the iPhone to upload photos

  - by Corey Floyd

  After looking I did come accross this post on the facebook forums: link They are feeding the facebook object a UIImage. That seems logical, but where is this documented? The API documentation is generalized to all platforms. Where are the iPhone specific requirements for arguments and their data types? Thanks **Update***** I still have not came across any API docs pertaining to Cocoa. I did, however, gather the information I needed by piecing together forum information, Facebook sample code, and some glue. Hopefully they'll issue something a little more concrete over the next few months.

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• PDF Viewer for my web - PHP

  - by hjaffer2001

  I am searching for pdf viewer for my web(Open Source). Searched for months and months. Is there any open source to view pdf in my web (without adobe). On the other hand, the documents should be secured. I have done a synopsis with the following urls;(but no use) http://embedit.in/ http://www.vuzit.com/ http://www.ajaxdocumentviewer.com/ http://flexpaper.devaldi.com http://www.icepdf.org/ https://docs.google.com/viewer http://www.snowbound.com/ http://www.mygazines.com http://www.issuu.com/business www.box.net http://viewer.zoho.com/ I want both download and print option for my pdf viewer.

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• Facebook access token: server-side vs client-side flows

  - by alexey

  Facebook docs: Facebook Platform supports two different OAuth 2.0 flows for user login: server-side (known as the authentication code flow in the specification) and client-side (known as the implicit flow). The server-side flow is used whenever you need to call the Graph API from your web server. The client-side flow is used when you need to make calls to the Graph API from a client, such as JavaScript running in a Web browser or from a native mobile or desktop app. What is the difference between access tokens taken by these flows? It seems like they length differ. Can we use server-side flow token on a client? And otherwise, can we use client-side flow token on a server?

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• configuration in IOS MDM

  - by PhuongMaruko

  I'm reading some docs about MDM. According to "Moile device management protocol" document, server can set config for managed devices by installing profile files onto devices. Things that can config in that file are described in https://developer.apple.com/library/ios/featuredarticles/iphoneconfigurationprofileref/Introduction/Introduction.html. My Questions are: if server install 2 profiles that have different config for the same thing, what will happen? "Moile device management protocol" documents also mention about "Managed App Configuration and Feedback". So what is different between the previous config file with this function of server. Is "Managed App Configuration and Feedback" just for specific app, not for the whole device as profile files. which fields can be config via "Managed App Configuration and Feedback" of MDM? Thank all!

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• How/When/Where to Extend Gem Classes (via class_eval and Modules) in Rails 3?

  - by viatropos

  What is the recommended way to extend class behavior, via class_eval and modules (not by inheritance) if I want to extend a class buried in a Gem from a Rails 3 app? An example is this: I want to add the ability to create permalinks for tags and categories (through the ActsAsTaggableOn and ActsAsCategory gems). They have defined Tag and Category models. I want to basically do this: Category.class_eval do has_friendly_id :title end Tag.class_eval do has_friendly_id :title end Even if there are other ways of adding this functionality that might be specific to the gem, what is the recommended way to add behavior to classes in a Rails 3 application like this? I have a few other gems I've created that I want to do this to, such as a Configuration model and an Asset model. I would like to be able to add create an app/models/configuration.rb model class to my app, and it would act as if I just did class_eval. Anyways, how is this supposed to work? I can't find anything that covers this from any of the current Rails 3 blogs/docs/gists.

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• Program visible to Linux as normal directory

  - by Xam

  I'm trying to write program to work as programmable directory, in other words: User, or other systems open that directory and read/write files or dirs. I try to create program to cache most used files in memory (less I/O to HDD), but right now I don't know how to achive that. There are probably some docs about this but I can't find them. I know that there is FUSE, NFS and others, but reading their source is quite difficult. If any one has info about implementation in C lang I'll be very grateful. Sorry for my English..

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• Allowing pop-up's and downloads with flex

  - by ShadowVariable

  I'm building an flex app that is basically a wrapper for a few websites. One of them is a google docs website, and I'm trying to get flex to allow downloads or popups or something that will allow me to do it. I've tried a whole bunch of solutions online and none of them have worked out. Here's the code so far: <?xml version="1.0" encoding="utf-8"?> <s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" width="100%" height="100%" creationComplete="onCreationComplete()"> <s:layout> <s:HorizontalLayout/> </s:layout> <fx:Style source="style.css"/> <fx:Script> <![CDATA[ include "CustomHTMLLoader.as"; private function onCreationComplete():void { // ... other stuff ... var custom:object; custom.htmlHost = new MyHTMLHost(); } ]]> </fx:Script> <fx:Declarations> <!-- Place non-visual elements (e.g., services, value objects) here --> </fx:Declarations> <s:BorderContainer width="100%" height="100%" backgroundColor="#87BED0" styleName="container"> <s:Panel x="188" y="17" width="826" height="112" borderAlpha="0.15" chromeColor="#0C5A74" color="#FFFFFF" cornerRadius="20" dropShadowVisible="false" enabled="true" title="Customer Service Control Panel"> <s:controlBarContent/> <s:Button id="home" x="13" y="10" height="44" label="Phones" click="myViewStack.selectedChild=Home;" enabled="true" icon="@Embed('assets/iconmonstr-mobile-phone-6-icon-32.png')"/> <s:Button id="liveagent" x="131" y="10" height="44" label="Live Agent" click="myViewStack.selectedChild=live_agent;" icon="@Embed('assets/iconmonstr-speech-bubble-11-icon-32.png')"/> <s:Button id="bigcommerce" x="260" y="10" width="158" height="44" label="Big Commerce" click="myViewStack.selectedChild=bigcommerce_home;" icon="@Embed('assets/iconmonstr-coin-6-icon-48.png')"/> <s:Button id="faq" x="436" y="10" width="88" height="44" label="FAQ" click="myViewStack.selectedChild=freqaskquestions;" fontFamily="Arial" icon="@Embed('assets/iconmonstr-help-4-icon-32.png')"/> <s:Button id="call" x="540" y="10" width="131" height="44" label="Google Docs" click="myViewStack.selectedChild=call_notes;" icon="@Embed('assets/iconmonstr-text-file-4-icon-32.png')"/> <s:Button id="hoot" x="684" y="10" width="122" height="44" label="HootSuite" click="myViewStack.selectedChild=hoot_suite;" icon="@Embed('assets/iconmonstr-facebook-icon-32.png')"/> </s:Panel> <mx:ViewStack id="myViewStack" x="0" y="140" width="100%" height="100%" borderStyle="solid"> <s:NavigatorContent id="Home"> <s:BorderContainer width="100%" height="100%"> <mx:HTML x="0" y="0" width="100%" height="100%" borderVisible="false" horizontalScrollPolicy="off" location="http://mbvphone.mtbakervapor.org/vbx/messages/inbox" /> </s:BorderContainer> </s:NavigatorContent> <s:NavigatorContent id="bigcommerce_home"> <s:BorderContainer width="100%" height="100%"> <mx:HTML x="0" y="0" width="100%" height="100%" borderVisible="false" horizontalScrollPolicy="off" location="http://www.mtbakervapor.com/admin" /> </s:BorderContainer> </s:NavigatorContent> <s:NavigatorContent id="live_agent"> <s:BorderContainer width="100%" height="100%"> <mx:HTML x="0" y="0" width="100%" height="100%" borderVisible="false" horizontalScrollPolicy="off" location="http://mbvphone.mtbakervapor.org/liveagent/agent/#login" /> </s:BorderContainer> </s:NavigatorContent> <s:NavigatorContent id="freqaskquestions"> <s:BorderContainer width="100%" height="100%"> <mx:HTML x="0" y="0" width="100%" height="100%" borderVisible="false" horizontalScrollPolicy="off" location="http://mbvphone.mtbakervapor.org/liveagent/" /> </s:BorderContainer> </s:NavigatorContent> <s:NavigatorContent id="call_notes"> <s:BorderContainer width="100%" height="100%"> <mx:HTML id="html" x="0" y="0" width="100%" height="100%" borderVisible="false" horizontalScrollPolicy="off" location="https://drive.google.com/a/mtbakervapor.com/" htmlHost="{new CustomHost()}" /> </s:BorderContainer> </s:NavigatorContent> <s:NavigatorContent id="hoot_suite"> <s:BorderContainer width="100%" height="100%"> <mx:HTML x="0" y="0" width="100%" height="100%" borderVisible="false" horizontalScrollPolicy="off" location="https://hootsuite.com/login" /> </s:BorderContainer> </s:NavigatorContent> </mx:ViewStack> <s:Image x="0" y="0" width="180" height="140" scaleMode="letterbox" smooth="false" source="assets/mbvlogo_black.png"/> </s:BorderContainer> </s:WindowedApplication> and the custom class code: package { import flash.html.HTMLHost; import flash.html.HTMLWindowCreateOptions; import flash.html.HTMLLoader; public class MyHTMLHost extends HTMLHost { public function MyHTMLHost(defaultBehaviors:Boolean=true) { super(defaultBehaviors); } override public function createWindow(windowCreateOptions:HTMLWindowCreateOptions):HTMLLoader { // all JS calls and HREFs to open a new window should use the existing window return HTMLLoader.createRootWindow(); } } } any help would be appreciated.

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