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Articles indexed in April 2010

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  • Amazon S3 Change file download name

    - by Daveo
    I have files stored on S3 with a GUID as the key name. I am using a pre signed URL to download as per S3 REST API I store the original file name in my own Database. When a user clicks to download a file from my web application I want to return their original file name, but currently all they get is a GUID. How can I achieve this? My web app is in salesforce so I do not have much control to do response.redirects all download the file to the web server then rename it due to governor limitations. Is there some HTML redirect, meta refresh, Javascript I can use? Is there some way to change the download file name for S3 (the only thing I can think of is coping the object to a new name, downloading it, then deleting it). I want to avoid creating a bucket per user as we will have a lot of users and still no guarantee each file with in each bucket will have a unique name Any other solutions?

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  • Adding file of the same name into the same list and unable to update name of the SPFile

    - by BeraCim
    Hi all: I'm having difficulties adding file of the same name in the same list and subsequently updating/changing/modifying the name of a SPFile. Basically, this is what I'm trying to do: string fileName = "something"; // obtained from a loop -- loop omitted here. SPFile file = folder.Files.Add(fileName, otherFile.OpenBinary()); The Add method will generate a runtime exception when it finds another file of the same name in the same list/folder. So I thought of changing the file name later in the process: string newGuid = Guid.NewGuid().ToString(); SPFile file = folder.Files.Add(newGuid, otherFile.OpenBinary()); // some other processing... afterwards, rename the file file.name = fileName; file.Item.Update(); A few minute of googling indicated I need to either move the file around, or update the name field by using ["Name"] instead. I was wondering are there any other better ways to get around this problem? Thanks.

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  • Finding edge and corner values of an image in matlab

    - by James
    Hi, this problem links to two other questions i've asked on here. I am tracing the outline of an image and plotting this to a dxf file. I would like to use the bwboundaries function to find the coordinates of the edges of the image, find the corner coordinates using the cornermetric function and then remove any edge coordinates that are not a corner. The important thing I need to be able to do is keep the order of the corner elements obtained from bwboundaries, so that the section traces properly. The dxf function I have that draws from the coordinates draws lines between coordinates that are next to each other, so the line has to be drawn "around" the section rather than straight between the corner points. The reason I am doing this is because there are less coordinates obtained this way, so it is easier to amend the dxf file (as there are less points to manipulate). The code I have so far is: %# Shape to be traced bw = zeros(200); bw(20:40,20:180) = 1; bw(20:180,90:110) = 1; bw(140:180,20:185) = 1; %# Boundary Finding Section [Boundary] = bwboundaries(bw); %Traces the boundary of each section figure, imshow(bw); hold on; colors=['b' 'g' 'r' 'c' 'm' 'y']; for k=1:length(Boundary) perim = Boundary{k}; %Obtains perimeter coordinates (as a 2D matrix) from the cell array cidx = mod(k,length(colors))+1;% Obtains colours for the plot plot(perim(:,2), perim(:,1),... colors(cidx),'LineWidth',2); end Coordmat = cell2mat(Boundary) %Converts the traced regions to a matrix X = Coordmat(:,1) Y = Coordmat(:,2) % This gives the edge coordinates in matrix form %% Corner Finding Section (from Jonas' answer to a previous question %# get corners cornerProbability = cornermetric(bw); cornerIdx = find(cornerProbability==max(cornerProbability(:))); %# Label the image. bwlabel puts 1 for the first feature, 2 for the second, etc. %# Since concave corners are placed just outside the feature, grow the features %# a little before labeling bw2 = imdilate(bw,ones(3)); labeledImage = bwlabel(bw2); %# read the feature number associated with the corner cornerLabels = labeledImage(cornerIdx); %# find all corners that are associated with feature 1 corners_1 = cornerIdx(cornerLabels==1) [Xcorners, Ycorners] = ind2sub(200,corners_1) % Convert subscripts The code I have is, to give a matrix Xfin for the final x coordinates (which are on the edge AND at a corner. Xfin = zeros(length(X),1) for i = Xcorners XFin(i) = Xcorners if i~= Xcorners XFin(i) = [] end end However, this does not work correctly, because the values in the solution are sorted into order, and only one of each value remains. As I said, I would like the corner elements to be in the same order as obtained from bwboundaries, to allow the image to trace properly. Thanks

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  • Problems with FlowLayoutPanel inside Panel with AutoSize

    - by DxCK
    I have the following controls hierarchy: Form Panel (AutoSize = true, AutoSizeMode = GrowAndShrink, Dock = Top) FlowLayoutPanel (AutoSize = true, AutoSizeMode = GrowAndShrink, Dock = Top) Control1, Control2, Control3, Control4, ... FlowLayoutPanel (AutoSize = true, AutoSizeMode = GrowAndShrink, Dock = Top) Control1, Control2, Control3, Control4, ... Here is how it layouts in various sizes: Fully visible all 8 buttons, but the Panel forgot to shrink The first FlowLayoutPanel are fully visible, but the second is only half visible, button8 is missing The first FlowLayoutPanel are fully visible, but the second is only half visible, button7 and button8 are missing The first FlowLayoutPanel are fully visible, but the second is only quarter visible, button 6, button7 and button8 are missing As you see, i'm not satisfied from this behavior. Is there something i can do to get all this work?

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  • Long time to load first sql connection in .NET

    - by Shrage Smilowitz
    For some reason it takes 7 seconds to open a connection to a sql server database for the firt time, subsequent connections takes a second. any idea what could be the reason? I'm using C# and asp.net Its after compilation, i essence every time i restart the site, which means every time it needs to actualy create the "first" connection. i understand that setting up connection pooling has overhead, but i have never seen that i should take 7 second to set it up.

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  • How to hide certain elements on a page using jQuery

    - by Ankur
    I am trying to implement something that is similar to a faceted search. My data is a series of objects and relationships. The idea is that you click an object (in this case "95 Theses" and then the possibly relationships are displayed, in this case "author" and clicking the relationship shows the object that matches the relationship, in this case "Martin Luther". My clicking of objects and relationsips (predicates) works fine. What I need to do is allow users to click an object or relationship and have all those that extend from it removed. This is what I thought of adding when a object or relationship 'tag' is clicked (every time I add another object or relationship I increment the global attribute called 'level'): if($(".objHolder,. preHolder").filter("[level>'"+level+"']").filter("[holderId='"+holderId+"']").length) { $(".objHolder,. preHolder").filter("[level>'"+level+"']").filter("[holderId='"+holderId+"']").remove(); } <table border="0" cellpadding="4" cellspacing="2"> <tbody><tr> <td class="objHolder" objid="1" holderid="1" level="1"> <table border="0" cellpadding="4" cellspacing="2"> <tbody><tr class="objItemRow" objid="1" holderid="1" level="1"> <td class="objItem" objid="1" holderid="1" level="2" bgcolor="#eeeeee" nowrap="nowrap">95 Theses</td> </tr></tbody> </table></td> <td><img src="images/right.jpg" alt="" height="10" width="16"></td> <td class="preHolder" level="2" holderid="1"> <table border="0" cellpadding="4" cellspacing="2"><tbody> <tr><td class="preItem" level="3" subid="1" preid="1" holderid="1" bgcolor="#eeeeee" nowrap="nowrap">author</td></tr> </tbody></table></td> <td><img src="images/right.jpg" alt="" height="10" width="16"></td> <td class="objHolder" level="3" holderid="1"> <table border="0" cellpadding="4" cellspacing="2"><tbody><tr><td class="objItem" level="4" objid="3" holderid="1" bgcolor="#eeeeee" nowrap="nowrap">Martin Luther</td></tr></tbody></table> </td> </tr></tbody> </table>

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  • Rerversing AND Bitwise.

    - by Benjamin
    Hey all, Here's the following algorithm: int encryption(int a, int b) { short int c, c2; uint8_t d; c = a ^ b; c2 = c; d = 0; while(c) { c &= c - 1; d++; } return d; } How can I find which variable a and b I should send in that function to decide of the output value of d? In other words, how can I reverse the algoritm to let's say if I want d=11?

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  • nginx serving Django static media | 502 bad gateway

    - by MMRUser
    I'm trying to serve Django static media through nginx, Here's my nginx.conf server { listen 7777; listen localhost:7777; server_name example.com; location / { proxy_pass http://localhost:7777; proxy_redirect off; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; client_max_body_size 10m; client_body_buffer_size 128k; proxy_connect_timeout 90; proxy_send_timeout 90; proxy_read_timeout 90; proxy_buffer_size 4k; proxy_buffers 4 32k; proxy_busy_buffers_size 64k; proxy_temp_file_write_size 64k; } location /test-app-media/ { root /sites/mysite/staticmedia/; expires max; } } but give a 502 bad gateway error, the path to /sites/mysite/staticmedia/ is in the nginx root/ is that the problem.. Django running on Apache 2.2 + mod_wsgi nginx 0.7.65 Thanks..

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  • Loading Liferay Properties from Spring IoC container (to get jdbc connection parameters)

    - by mox601
    I'm developing some portlets for Liferay Portal 5.2.3 with bundled tomcat 6.0.18 using Spring IoC container. I need to map the User_ table used in Liferay database to an entity with Hibernate, so I need to use two different dataSources to separate the liferay db from the db used by portlets. My jdbc.properties has to hold all connection parameters for both databases: no problem for the one used by portlets, but I am having issues determining which database uses liferay to hold its data. My conclusion is that i should have something like this: liferayConnection.url=jdbc:hsqldb:${liferay.home}/data/hsql/lportal in order to get the database url dynamically loaded, according to Liferay properties found in portal-ext.properties. (Or, better, load the whole portal-ext.properties and read database properties from there). The problem is that the placeholder is not resolved: Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: Invalid bean definition with name 'liferayDataSource' defined in class path resource [WEB-INF/applicationContext.xml]: Could not resolve placeholder 'liferay.home' To dodge this problem I tried to load explicitly portal-ext.properties with a Spring bean: <bean id="liferayPropertiesConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" p:location="../../portal-ext.properties"/> but no luck: liferay.home is not resolved but there aren't other errors. How can I resolve the placeholder defined by Liferay? Thanks

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  • Disabling all the Page Control through jQuery.

    - by Sanju
    I am working on asp.net and c#. I am using lots of ASP and HTML controls on the page and in some cases all the controls gets disabled. Some of the used Controls are: RadioButton RadioButtonList CheckBox CheckBoxList TextBox DropDownList Button etc... I need a Simple and short method to disabled all the Controls when i call this jQuery method on some condition. Any Help? Thanks in Advance...

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  • The name/identity of the invoker of a web service

    - by Swamy g
    I have a SOAP web service which I call from two clients using axis2. Can the web service know from which of these two clients the call originated from? If so, how do I know that during runtime? Is there any API provided to lookup the name of the invoker of a particular web service by that web service. Thanks.

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  • Boost asio async vs blocking reads, udp speed/quality

    - by Dolphin
    I have a quick and dirty proof of concept app that I wrote in C# that reads high data rate multicast UDP packets from the network. For various reasons the full implementation will be written in C++ and I am considering using boost asio. The C# version used a thread to receive the data using blocking reads. I had some problems with dropped packets if the computer was heavily loaded (generally with processing those packets in another thread). What I would like to know is if the async read operations in boost (which use overlapped io in windows) will help ensure that I receive the packets and/or reduce the cpu time needed to receive the packets. The single thread doing blocking reads is pretty straightforward, using the async reads seems like a step up in complexity, but I think it would be worth it if it provided higher performance or dropped fewer packets on a heavily loaded system. Currently the data rate should be no higher than 60Mb/s.

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  • jQuery table paging

    - by Idsa
    I have a usual html table and want to add ajax-paging to it (table data should be reloaded). I'm sure there should be some jQuery plugin for that :)

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  • Activation rectangle

    - by Knowing me knowing you
    Making UML sequence diagram in VS 2010RC I've observed that there is no activation rectangle in first object. Is this correct? Not according to my tutor and I have to quote him: "Finally, you have no activation rectangle for the userInterface instance, so the initial message could never have been sent." But I'm thinking that if guys from VS did that it must/should be correct. Another thing he is picking me at is and I'm quoting him: "In class diagram the generalisation arrow heads should be open triangles." In my opinion there isn't strictly said that they must be open triangles especially when software lets you choose their form. Looking forward to hear your opinions. Thanks for answers.

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  • Example usage of AX in PHP OpenID

    - by Supercharged
    I'm using JanRain's PHP OpenID library. It comes with example script which is using SReg extension. But I want it to work with Google (and it works for auth actually), but Google uses AX (attribute exchange) instead of SReg for additional data. For some reason, JanRain's library is missing AX support in example script, and code comments in AX script are out of my understanding, though comments in SReg script are clear as 1-2-3. Does anyone know how to implement AX without too much pain?

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  • Am I suffering "divitis"? (CSS especialist needed)

    - by janoChen
    I've read lots of articles that condemn the excessive use of divs. I have a feeling that I might be doing that in the following mark up: HTML: <div id="header"> <div class="container"> <div id="banner"> <h1><a href="http://widerdesign.co.nr/">wider design</a></h1> <ul id="lang"> <li><a href="index.php">English</a></li> <li><a href="es/index.php">Español</a></li> <li><a href="tw/index.php">??(??)</a></li> <li><a href="cn/index.php">??(??)</a></li> </ul> </div> <div id="intro"> <div id="tagline"> <h2>Nulla vitae tortor mauris</h2> <p>Pellentesque faucibus est eu tellus varius in susc...</p> </div> <div id="about"> <h2>right</h2> <p>Pellentesque faucibus est eu tellus varius in susc...</p> </div> </div><!-- #intro --> </div><!-- .container --> </div><!-- #header --> CSS: .container { margin: 0 auto; overflow: hidden; width: 960px; } /* header */ #header { background: #EEE; } #header h1 { float: left; } #header h2, #header a, #header p { color: #999; } #header h1 a { background: url(../images/logo.png) no-repeat scroll 0 0; float: left; height: 30px; text-indent: -9999px; width: 500px; } #banner { border-bottom: 1px solid #DDD; padding: 0 0 15px 0; margin: 30px 0 30px 0; overflow: hidden; width: 960px; } #lang { float: right; padding: 9px 0 0 0; } #lang li { float: left; margin: 0 0 0 20px; } #lang li a { font-size: 10px; } /* intro */ #intro { overflow: hidden; padding: 0 0 30px 0; } #tagline { float: left; margin: 0 40px 0 0; width: 540px; /* 560 */ } #tagline h2 { font-size: 24px; } #about { float: right; width: 380px; } Explanation of the use of those divs: header: Defines the background color which expands until the end of the window (lies outside of the div .container). container: centers the content (but not the background). banner: to define the background or border color around ul#lang and h1. intro: same as above but for #tagline and #about (otherwise I have to define say padding or margin for tagline and about individually). Am I overusing divs? Can this be simplified?

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  • manage.py not updating database name

    - by ricree
    I have a Django application, and I recently changed the name of the database it is supposed to use. However, manage.py doesn't seem to be using the new database. I've doublechecked the settings.py file, and I've even added a "print settings.DATABASE_NAME" to the manage.py file, and it prints out the correct name, but still connects to the old database. For example, using ./manage.py dbshell: NewDB Password for user : Welcome to psql 8.1.11, the PostgreSQL interactive terminal. OldDB=> So as far as I can see, it's completely ignoring what's in the settings file. What could be causing this?

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  • jquery form dialog dissapears if i use effect

    - by vasion
    i am using JqueryUI and everything was fine until i tried to jazz it up and added an effect for showing and closing the dialog. Now the dialog appears and disappears in an instant. I am using CAKEPHP, if that matter and still have cake.generic.css on and the debug option on, but i dont see how this could matter.

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  • Postfix configuration (relay access)

    - by jome
    I have just installed POSTFIX on a Debian box, I pointed the relay host config setting to an exchange server which will deliver the mail to external users. So what I am trying to do is telnet to the debian box and send an email to [email protected] which will then be past to the exchange server for delivery. The problem is I get the following: rcpt to:[email protected] 554 relay access denied I have seen a section in the config "mydestination" but i want the exchange server to decide which domains it will deliver for and not the POSTFIX server.

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  • How to configure 2 LAN Cards

    - by PatDiazJr
    How do we configure two (2) LAN cards on one computer. One LAN card is connected to the internet via the DSL through a router, configured as DHCP. The other LAN card is to be connected via our office's IP/VPN (for email and other office online processes). I know it could be done, but I do not know how. By the way, the operating system is Windows XP.

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  • QT Creator 64-bit Snow Leopard

    - by quadelirus
    I have a bunch of libraries that I need to link against that I installed via macports. They are 64-bit libraries. I'm working on an application written with QT Creator and the .pro is set up. I downloaded the QT SDK for Mac OS X, but it is 32-bit and so the compiled code won't link against the 64-bit binaries that I got from macports. Ok. So I downloaded the QT SDK source and built from source using -arch x86_64. Now I have a 64-bit version of the SDK (I think) but it didn't build a QT Creator app. So. I need to know one of 4 things: Either, 1.) I'm guessing that a simple make command will convince the QT SDK to build the creator for me. If this is true, then what is the command (make creator?). barring that, I need to know 2.) The easiest way to get MacPorts to redownload the libraries that I installed with a 32-bit version (I keep seeing a "+universal" mentioned, but I haven't seen it on a line, and simply calling ports +universal install XYZ doesn't seem to work--perhaps I need to uninstall and reinstall the package?). Also, is this a stupid idea? or 3.) Someone who actually has a prebuilt 64-bit QT SDK installer so I don't have to mess with this. It is ridiculous that QT doesn't already have this available, in my opinion--SL has been out since, what, last August? 4--and this would take the cake.) I don't understand why I can't simply put a "compile-for-64-bit stupid" command directly into the QT pro file and have it build. There isn't really a reason why a compiler compiled in 32-bits couldn't compile to 64-bits is there? Thanks.

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