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  • Session expiry times?

    - by user246114
    Hi, I've enabled sessions on my app: // appengine-web.xml <sessions-enabled>true</sessions-enabled> they seem to work when I load different pages under my domain. If I close the browser however, looks like the session is terminated. Restarting the browser shows the last session is no longer available. That could be fine, just wondering if this is documented anywhere, so I can rely on this fact? I tried the following just to test if we can tweak it: // in web.xml <session-config> <session-timeout>10</session-timeout> </session-config> also // in my servlet getThreadLocalRequest().getSession().setMaxInactiveInterval(60 * 5); but same behavior, session data is no longer available after browser restart. I looked at the stats for my project and I see data being used for something like "_ah_SESSION" objects. Are those the sessions from above? If so, shouldn't they be cleaned since they're no longer valid? (Hopefully gae takes care of that automatically?) Thanks

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  • Appengine not liking my .jspx files

    - by Hans Westerbeek
    I have a little app that runs fine on local dev appengine, but appengine itself is not processing my .jspx files. The jspx files are in WEB-INF so they should not be excluded by appengine (as a static resource) I am using Apache Tiles to define my views. So the html produced looks like this: <html xmlns:jsp="http://java.sun.com/JSP/Page" xmlns:c="http://java.sun.com/jsp/jstl/core" xmlns:tiles="http://tiles.apache.org/tags-tiles" > <jsp:output omit-xml-declaration="yes"/> <jsp:directive.page contentType="text/html;charset=UTF-8" /> <jsp:directive.page isELIgnored="false"/> (etc etc) How can I solve this problem?

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  • Do Blob properties on entities affect query performance?

    - by Jaroslav Záruba
    Hello I'm trying to make my mind on whether to store a binary representation of an entity as its Blob property, or whether I better keep the blobs in some separate 'wrapping' class. Possible impact on memory heap and/or a query execution time are my concerns in the first case, complexity votes against the other one. I know Blobs are not indexed, i.e. index size is not what I'm worrying about. Also I assume for blobs Datastore puts defaultFetchGroup to false, but does it mean that blobs don't make a difference in queries? Regards J. Záruba

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  • Is XML a good logic to load data??

    - by Mat
    Hi stack, i'm working on an app that loads some data from xml file from internet. Is this a good way to develop iPhone apps??...I think xml is more light than SQlite database... Basically my logic is: 1 - Parsing Xml file from internet to retrive the data 2 - Load data on device Security?..other stuff??.. Thanks Mat

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  • Emacs on Windows: how to protect built-in el files from being accidentally edited

    - by RamyenHead
    On Linux, they are all read only, so no problem. But on MS Windows, what happens is like this: I get curious about the definition of the command isearch-forward, I type C-h f isearch-forward and click on the link isearch.el from the help to get to the definition of the function, and while I am reading its definition, I press C-h or C-c many times, but I set Caps Lock as another Ctrl key, so sometimes it happens that I release Caps Lock too early, in which case C-h or C-c becomes inserting h or c, sometimes I notice that and undo it, but sometimes I don't notice it, and I even save them all with C-x s. What is a good way to protect the built-in el files from me on MS Windows?

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  • displaying .aspx and .aspx.cs files such that its not understood by the browser

    - by user287745
    i have to give the user the option to upload his own aspx and aspx.cs files on to the server, adjust the hyperlink to point to a page which would do the following display the aspx and aspx.cs files code onto the page without actually rendering the code the browser should not understand anything, and while reading the files to display them the method be such that nothing is processed on the server regarding the code within the files to prevent from unnecessary problems many user would try to cause. i have tried many ways of displaying it but it ends up on displaying the actual comments instead of the code. please suggest with links to examples how to achieve the above. please note main concentration is on asp.net and c# using vs08, so j script and ready-made tools be avoided if feasible thank you all

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  • Open Technology: Nanorobots Answer to US Navy

    - by adrianocavalcanti
    Hi Everybody, Just wondering if some has some suggestion about open technology licensing. I have been working on nanotechnology -- here some info: * Nanorobot Technology: What to Expect from Science - A Personal Letter in Answer to United States Navy http://www.linuxquestions.org/questions/general-10/nanorobot-technology-what-to-expect-from-science-814060 and started an initiative towards open nanotechnology since last october. All comments and suggestions are highly appreciated.

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  • Formatting code in research reports

    - by RoseOfJericho
    I am currently writing a formal research report, and I'll be including JavaScript and PHP code. None of the sections of code will be more than 25 lines (so they're mere snippets). There will be approx. half a dozen snippets, each of which will have a couple of paragraphs explaining what is happening in the code and a discussion on its pros/cons. Is there an accepted way of displaying code in research reports? I'm thinking in terms of font, spacing, whether the code should be displayed inside the document or in an appendix, and related details. I have no contact with the body the report will be submitted to, and they have no published guidelines on how to format code.

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  • GWT with JDO problem

    - by Maksim
    I just start playing with GWT I'm having a really hard time to make GWT + JAVA + JDO + Google AppEngine working with DataStore. I was trying to follow different tutorial but had no luck. For example I wend to these tutorials: TUT1 TUT2 I was not able to figure out how and what i need to do in order to make this work. Please look at my simple code and tell me what do i need to do so i can persist it to the datastore: 1. ADDRESS ENTITY package com.example.rpccalls.client; import java.io.Serializable; import javax.jdo.annotations.IdGeneratorStrategy; import javax.jdo.annotations.Persistent; import javax.jdo.annotations.PrimaryKey; public class Address implements Serializable{ @PrimaryKey @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY) private int addressID; @Persistent private String address1; @Persistent private String address2; @Persistent private String city; @Persistent private String state; @Persistent private String zip; public Address(){} public Address(String a1, String a2, String city, String state, String zip){ this.address1 = a1; this.address2 = a2; this.city = city; this.state = state; this.zip = zip; } /* Setters and Getters */ } 2. PERSON ENTITY package com.example.rpccalls.client; import java.io.Serializable; import java.util.ArrayList; import javax.jdo.annotations.IdGeneratorStrategy; import javax.jdo.annotations.PersistenceCapable; import javax.jdo.annotations.Persistent; import javax.jdo.annotations.PrimaryKey; import com.google.appengine.api.datastore.Key; @PersistenceCapable public class Person implements Serializable{ @PrimaryKey @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY) private Key key; @Persistent private String name; @Persistent private int age; @Persistent private char gender; @Persistent ArrayList<Address> addresses; public Person(){} public Person(String name, int age, char gender){ this.name = name; this.age = age; this.gender = gender; } /* Getters and Setters */ } 3. RPCCalls package com.example.rpccalls.client; import java.util.ArrayList; import com.google.gwt.core.client.EntryPoint; import com.google.gwt.core.client.GWT; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.rpc.AsyncCallback; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.RootPanel; import com.google.gwt.user.client.ui.TextBox; public class RPCCalls implements EntryPoint { private static final String SERVER_ERROR = "An error occurred while attempting to contact the server. Please check your network connection and try again."; private final RPCCallsServiceAsync rpccallService = GWT.create(RPCCallsService.class); TextBox nameTxt = new TextBox(); Button btnSave = getBtnSave(); public void onModuleLoad() { RootPanel.get("inputName").add(nameTxt); RootPanel.get("btnSave").add(btnSave); } private Button getBtnSave(){ Button btnSave = new Button("SAVE"); btnSave.addClickHandler( new ClickHandler(){ public void onClick(ClickEvent event){ saveData2DB(nameTxt.getText()); } } ); return btnSave; } void saveData2DB(String name){ AsyncCallback<String> callback = new AsyncCallback<String>() { public void onFailure(Throwable caught) { Window.alert("WOOOHOOO, ERROR: " + SERVER_ERROR);

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  • GAE datastore backup

    - by Joel
    Hey all, I've seen there is a datastore backup utility by "Aral Balkan" ( http://code.google.com/intl/iw-IL/appengine/articles/gae_backup_and_restore.html ). However, this utility is only applicable for Django framework and not webapp. Is there any utility out there for webapp as well? Thanks Joel

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  • Help with game development. Render loop?

    - by John
    Hello, I'm working on a simple game, this is my first game project. Most of the samples I find have a Render Loop where all the game logic is made too and I just don't like this. Let's say I have a ball with X=0, and a wall in X=10 and in a slow machine, the first loop places the ball in X=7 and in a second loop, it places the ball in X=14. It would just crash the game! Is this "render loop" the right way to make games? Should I write code to check for things like this in every frame? Example, new frame X=14, last frame have X=7, so I should check if there's anything from X=7 to X=14?? I was thinking that I should have a separated thread for the game logic and in the render loop, I should just "take a snapshot" of the current game logic and display that, no? How do you guys, experienced game developers work around this? thanks!

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  • GoogleChartSharp

    - by csharp-source.net
    GoogleChartSharp is a C# wrapper for the Google Charts API. GoogleChartSharp supports all API charts and features. The Google Chart API returns a PNG-format image in response to a URL. Several types of image can be generated: line, bar, and pie charts for example. For each image type you can specify attributes such as size, colors, and labels. You can include a Chart API image in a webpage by embedding a URL.

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  • How do these user/userParam references relate to the Customer and Account lookups?

    - by plath
    In the following code example how do the user/userParam references relate to the Customer and Account lookups and what is the relationship between Customer and Account? // PersistenceManager pm = ...; Transaction tx = pm.currentTransaction(); User user = userService.currentUser(); List<Account> accounts = new ArrayList<Account>(); try { tx.begin(); Query query = pm.newQuery("select from Customer " + "where user == userParam " + "parameters User userParam"); List<Customer> customers = (List<Customer>) query.execute(user); query = pm.newQuery("select from Account " + "where parent-pk == keyParam " + "parameters Key keyParam"); for (Customer customer : customers) { accounts.addAll((List<Account>) query.execute(customer.key)); } } finally { if (tx.isActive()) { tx.rollback(); } }

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  • How do these user/userParam references relate to the Customer and Account lookups?

    - by marmalade
    In the following code example how do the user/userParam references relate to the Customer and Account lookups and what is the relationship between Customer and Account? // PersistenceManager pm = ...; Transaction tx = pm.currentTransaction(); User user = userService.currentUser(); List<Account> accounts = new ArrayList<Account>(); try { tx.begin(); Query query = pm.newQuery("select from Customer " + "where user == userParam " + "parameters User userParam"); List<Customer> customers = (List<Customer>) query.execute(user); query = pm.newQuery("select from Account " + "where parent-pk == keyParam " + "parameters Key keyParam"); for (Customer customer : customers) { accounts.addAll((List<Account>) query.execute(customer.key)); } } finally { if (tx.isActive()) { tx.rollback(); } }

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  • GAE images.resize with fixed proportional crop

    - by user288541
    I need to resize and crop to exactly 60x80px from various size and aspect ratio. Just before i put into Datastore. Anyone already got this issue resolved. Currently i already succed to just transform it to exact height (80px) with various width which nott look so good when i try to display it on a list. e.g jcaroussel. My db.put code is like bellow: if users.get_current_user(): personal.personal_id = int(self.request.get('personal_id')) personal.name = self.request.get('name') personal.latitude = self.request.get('latitude') personal.info = self.request.get('info') photo = images.resize(self.request.get('img'), 0, 80) personal.photo = db.Blob(photo) personal.lc_id = int(self.request.get('lc_id')) personal.put() self.redirect('/admin/personal') else: self.response.out.write('I\'m sorry, you don\'t have permission to add this LP Personal Data.') I just want to do similar result when we upload our avatar on google talk/google chat. Anyone solved this? Thx

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  • Crawling within a pdf

    - by Saubhagya
    Hi, I'm developing a tool that searches the keyword entered by the user on a given site. My problem is, it searches the keyword only on html/web pages but not on the PDF/MS-Word files found on the site. Can anyone suggest me some api/tool or provide the code that can search text from the given online PDF/MS-Word/Text file?

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  • Add existing project to solution under visualvsn

    - by Eric
    We are changing from SourceSafe 2005 to visual svn. How can an exisiting project be added to a solution Example: I create solution1 with 3 projects and add to /trunk I create solution2 with 1 project and add to /trunk In solution1 I add existing project from solution2, but I cannot add to subversion. I get "out of working copy, use the VisualSVN-Set Working Copy root menu" In SourceSafe2005 it would just link, what is the procedure for VisualSVN? Branch? Regards _Eric

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  • Will an Nginx as reverse proxy for Apache help on dynamic content only

    - by Saif Bechan
    I am planning to move all my static content to a CDN so on my server I only have dynamic content left. I now have Nginx set up as reverse proxy to Apache. The static request that came in where directly delivered by Nginx without having to go to Apache. In this case Nginx handled a large portion of the request and I can clearly see the necessity of Nginx. Now that I moved all the static content to another domain, is there still a need to have nginx in front of Apache. Because now all the request are by default dynamic requests and all go to Apache. Are there any other benefits of having Nginx and Apache running for only dynamic content. My dynamic content is PHP/MySQL Edit: To be clear: I now have Nginx as a reverse proxy. It delivers static and dynamic content. But I am moving my static files to a CDN. Do I then still need Nginx on my domain.

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  • How do I apply a servlet filter when serving an HTML page directly?

    - by Philippe Beaudoin
    First off, I'm using Google AppEngine and Guice, but I suspect my problem is not related to these. When the user connect to my (GWT) webapp, the URL is a direct html page. For example, in development mode, it is: http://127.0.0.1:8888/Puzzlebazar.html?gwt.codesvr=127.0.0.1:9997. Now, I setup my web.xml in the following way: <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"> <display-name>PuzzleBazar</display-name> <!-- Default page to serve --> <welcome-file-list> <welcome-file>Puzzlebazar.html</welcome-file> </welcome-file-list> <filter> <filter-name>guiceFilter</filter-name> <filter-class>com.google.inject.servlet.GuiceFilter</filter-class> </filter> <filter-mapping> <filter-name>guiceFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- This Guice listener hijacks all further filters and servlets. Extra filters and servlets have to be configured in your ServletModule#configureServlets() by calling serve(String).with(Class<? extends HttpServlet>) and filter(String).through(Class<? extends Filter) --> <listener> <listener-class>com.puzzlebazar.server.guice.MyGuiceServletContextListener </listener-class> </listener> </web-app> Since I'm using Guice, I have to configure extra filters in my ServletModule, where I do this: filter("*.html").through( SecurityCookieFilter.class ); But my SecurityCookieFilter.doFilter is never called. I tried things like "*.html*" or <url-pattern>*</url-pattern> but to no avail. Any idea how I should do this?

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  • Does anyone know a better alternative to MS Excel's Solver?

    - by tundal45
    My company has to crunch a lot of data and part of the process involves running the solver and plotting a graph through resulting data points. Obviously there is a lot of copy and paste involved and the whole process is shaky, error prone and all round cluster-fudge. I was wondering if there was an alternative to the solver that can be used so that even if we have to use excel to plot the final graph, there will be a lot less data that needs to be copied and pasted back and forth. It would be great especially if the tool could be easily integrated into a .NET application but I am open to suggestions that may require a little bit of code-fu to get this to work. Thanks!

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