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Articles indexed Thursday May 27 2010

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  • High Availability

    - by mattjgilbert
    Udi Dahan presented at the UK Connected Systems User Group last night. He discussed High Availability and pointed out that people often think this is purely an infrastructure challenge. However, the implications of system crashes, errors and resulting data loss need to be considered and managed by software developers. In addition a system should remain both highly reliable (backwardly compatible) and available during deployments and upgrades. The argument is that you cannot be considered highly available if your system is always down every time you upgrade. For our recent BizTalk 2009 upgrade we made use of our Business Continuity servers (note the name, rather than calling them Disaster Recovery servers ? ) to ensure our clients could continue to operate while we upgraded the Production BizTalk servers. Then we failed back to the newly built 2009 environment and rebuilt the BC servers. Of course, in the event of an actual disaster there was a window where either one or the other set were not available to take over – however, our Staging machines were already primed to switch to production settings, having been used for testing the upgrade in the first place.   While not perfect (the failover between environments was not automatic and without some minimal outage) planning the upgrade in this way meant BizTalk was online during the rebuild and upgrade project, we didn’t have to rush things to get back on-line and planning meant we were ready to be as available as we could be in the event of an actual disaster.

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  • pure-ftpd: one readonly/non-deletable file in home directory

    - by Bram Schoenmakers
    Is there a way to have a file in the user's FTP home directory without the ability to modify/remove it from that directory over FTP? So the user has write permissions on his own home folder, thus the ability to remove files. An exception should be made for a single file, which has the same filename and contents for each account. The solution I'm thinking of right now to run a periodic script to check the presence of that file, and if not, put it back. But I wonder whether there's a better solution than this.

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  • Finding html to pdf free software.

    - by cpps
    I am finding a free software to convert html to pdf and preserved the html hyperlinks and text searchable in pdf? Anyone has suggestion? Edit: I want Desktop software on Windows xp. And the software can convert japanese and chinese html to pdf correctly. Thanks in advance.

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  • How to Setting Non-scrolling Rows/Columns

    - by joe
    Here things i want to do .. I am having Colum A...Z I am having data in Row 1..10 A - is Title From B ..Z . I am having differnet values . When i scroll into Z colum is hided . I want to show my A ( title ) all times even if i scrolled . How to acheive this in Excel 2007

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  • Routing fails when only category is supplied

    - by creativeincode
    My website uses categories and sub-categories. I'd like the follow mapping: /Category/Fruit /Category/Fruit/Apples But if I use the below: routes.MapRoute( "Category", // Route name "Category/{category}/{subcategory}", // URL with parameters new { controller = "Entity", action = "Category" } // Parameter defaults ); I get a 404 for /Category/Fruit however /Category/Fruit/Apples works ok. I'd like /Category/Fruit to work as well but I can't add another route with the same name. How do I get around this? Thanks in advance.

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  • screen orientation problem in windows mobile application

    - by karim
    some one in tips and tricks say like this plz i cant understand that plz if u could provide saple code for that answer ,i could understand it.actullay iam facing this problem in my application where iam using C#.net,VS 2008,windows mobile 6 professional. they told like this below one If you have to support multiple screen sizes/resolutions, form inheritance is an excellent way to do it. Basically you design your form to fit the standard 320x240 screen. To support a different screen size, you just add a new form, inherit from your custom form (instead of just Form), and then re-arrange the controls as necessary.

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  • How can I filter out the "My Computer"-option in a SWT DirectoryDialog?

    - by Superfisi
    Hello *, in our Eclipse RCP application running on Windows XP we use a DirectoryDialog, in which the user should... ahmm... choose a directory! :D The problem is: If the user selects the "My Computer"-option (in German Windows "Arbeitsplatz") the Dialog returns null. The DirectoryDialog provides a method setFilterPath(String path) in which I put the File.pathSeparatorChar (to remain OS-independant). My suggestion was that if there has to be a file separator in the directory the "My Computer"-option would be ignored cause it is null - for example the "OK"-button would be greyed out or sth. like that... but it is also valid to klick "OK". Any suggestions from your side? :D Thanks in advance! Alex

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  • Which European conference is the best equivalent of OSCON?

    - by smci
    Looking for a large European developer/software conference, open-source-friendly, programming-language-neutral, platform-neutral, vendor-neutral. Any recommendations? apparently there briefly used to be a Euro OSCON (2004-2006? what happened?) some good language/app-specific ones like EuroPython, EuroSciPy, DjangoCon European BarCamps seem kind of fragmented, esp. for an English-speaking audience anything bigger or better? If there isn't anything, I wonder if O'Reilly would resurrect Euro OSCON.

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  • Strange Template error : error C2783: could not deduce template argument

    - by osum
    Hi, I have created a simple function with 2 diffrernt template arguments t1, t2 and return type t3. So far no compilation error. But when Itry to call the function from main, I encounter error C2783. I needed to know If the following code is legally ok? If not how is it fixed? please help! template <typename t1, typename t2, typename t3> t3 adder1 (t1 a , t2 b) { return int(a + b); }; int main() { int sum = adder1(1,6.0); // error C2783 could not deduce template argument for t3 return 0; }

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  • where is the error in this C code , and how to get rid of the warnings?

    - by mekasperasky
    #include<stdio.h> #include<string.h> //This program is a sorting application that reads a sequence of numbers from a file and prints them on the screen . The reading from the file here , is a call back function . typedef int (*CompFunc)(const char* , const char* ); typedef int (*ReadCheck)(char nullcheck); char array[100]; //Let this fucntion be done in the library itself . It doesnt care as to where the compare function and how is it implemented . Meaning suppose the function wants to do sort in ascending order or in descending order then the changes have to be done by the client code in the "COMPARE" function who will be implementing the lib code . void ReadFile(FILE *fp,ReadCheck rc) { char a; char d[100]; int count = 0,count1=0; a=fgetc(fp); while(1 != (*rc)(a)) { if(a=='\0') { strcpy(array[count],d); count=count+1; } else { d[count1]=a; count1=count1+1; } } } void Bubblesort(int* array , int size , int elem_size , CompFunc cf) { int i,j; int *temp; for( i=0;i < size ;i++) { for ( j=0;j < size -1 ; j++) { // make the callback to the comparision function if(1 == (*cf)(array+j*elem_size,array+ (j+1)*elem_size)) { //interchanging of elements temp = malloc(sizeof(int *) * elem_size); memcpy(temp , array+j*elem_size,elem_size); memcpy(array+j*elem_size,array+(j+1)*elem_size,elem_size); memcpy(array + (j+1)*elem_size , temp , elem_size); free(temp); } } } } //Let these functions be done at the client side int Compare(const char* el1 , const char* el2) { int element1 = *(int*)el1; int element2 = *(int*)el2; if(element1 < element2 ) return -1; if(element1 > element2) return 1 ; return 0; } int ReadChecked(char nullcheck) { if (nullcheck=='\n') return 1; else return 0; } int main() { FILE fp1; int k; fp1=fopen("readdata.txt","r"); Readfile(fp1,&ReadChecked); Bubblesort((char*)array,5,sizeof(array[0]),&Compare); printf("after sorting \n"); for (k=0;k<5;k++) printf("%d",array[k]); return 0; } The error i get is fsc1.c: In function ‘ReadFile’: fsc1.c:19: warning: passing argument 1 of ‘strcpy’ makes pointer from integer without a cast fsc1.c: In function ‘Bubblesort’: fsc1.c:40: warning: passing argument 1 of ‘cf’ from incompatible pointer type fsc1.c:40: warning: passing argument 2 of ‘cf’ from incompatible pointer type fsc1.c:43: warning: incompatible implicit declaration of built-in function ‘malloc’ fsc1.c:47: warning: incompatible implicit declaration of built-in function ‘free’ fsc1.c: In function ‘main’: fsc1.c:80: error: incompatible types in assignment fsc1.c:82: warning: passing argument 1 of ‘Bubblesort’ from incompatible pointer type

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  • PHP split content when a HTML element is found

    - by sea_1987
    Hello, I have a PHP variable that holds some HTML I wanting to be able to split the variable into two pieces, and I want the spilt to take place when a second bold <strong> or <b> is found, essentially if I have content that looks like this, My content This is my content. Some more bold content, that would spilt into another variable. is this at all possible?

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  • How can I configure a Hudson job to use a specific JDK?

    - by rewbs
    I have a number of projects running on a Hudson slave. I'd like one of them to run Ant under Java6, rather than the default (which is Java5 in my environment). In the project configuration view, I was hoping to find either: An explicit option allowing me to set a custom JDK location to use for this project. A way to set custom environment variables for this project, which would allow me to set JAVA_HOME to the JDK6 location. The would make Ant pick up and run on Java6 as desired. Is there a way to do either of the above? If one of those facilities is available, I can't see how to access it. I'm running on Hudson 1.285. I would rather avoid using an "execute shell" operation instead of the "invoke Ant" operation if possible: my slave is on z/OS and Hudson doesn't seem to create the temporary shell scripts properly on this platform (probably an encoding issue).

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  • SortCommand Event handler of DataGrid not working

    - by Nadeem
    I have created an event handler for the OnSortCommand of DataGrid: <asp:DataGrid id="dtgBatches" runat="server" Width="100%" CssClass="intTable" EnableViewState="False" DataKeyField="bat_GUID" GridLines="Horizontal" AllowSorting="True" AutoGenerateColumns="False" AllowPaging="False" > <SelectedItemStyle BackColor="#FFFF99"></SelectedItemStyle> <AlternatingItemStyle CssClass="intTableEntry"></AlternatingItemStyle> <ItemStyle CssClass="intTableEntry2"></ItemStyle> <HeaderStyle ForeColor="Black" CssClass="tableHeader"></HeaderStyle> <Columns> <asp:TemplateColumn > <HeaderStyle Width="5%"></HeaderStyle> <ItemStyle HorizontalAlign="Center"></ItemStyle> <ItemTemplate> <img src="../images/icons/cog.png" onclick="universalAlert('Loading...',4,false); ViewBatch('<%# DataBinder.Eval(Container.DataItem, "bat_GUID") %>')" alt="view"/> </ItemTemplate> </asp:TemplateColumn> <asp:BoundColumn DataField="bat_Name" SortExpression="bat_Name" HeaderText="<%$ Resources:AI360Resource, lnkbtn_Name %>"> <HeaderStyle Width="10%"></HeaderStyle> <ItemStyle HorizontalAlign="Left"></ItemStyle> </asp:BoundColumn> <asp:BoundColumn DataField="bat_Id" SortExpression="bat_Id" HeaderText="<%$ Resources:AI360Resource, ltxt_ID %>"> <HeaderStyle Width="10%"></HeaderStyle> <ItemStyle HorizontalAlign="Left"></ItemStyle> </asp:BoundColumn> <asp:BoundColumn DataField="bat_Date" SortExpression="bat_Date" HeaderText="<%$ Resources:AI360Resource, alt_date %>" DataFormatString="{0:d}"> <HeaderStyle HorizontalAlign="right" Width="10%"></HeaderStyle> <ItemStyle HorizontalAlign="Right"></ItemStyle> </asp:BoundColumn> <asp:TemplateColumn> <HeaderStyle Width="1%"></HeaderStyle> </asp:TemplateColumn> <asp:BoundColumn DataField="bat_Close_date" SortExpression="bat_Close_date" HeaderText="<%$ Resources:AI360Resource, ltxt_closed %>" DataFormatString="{0:d}"> <HeaderStyle Width="29%"></HeaderStyle> <ItemStyle HorizontalAlign="Left"></ItemStyle> </asp:BoundColumn> <asp:BoundColumn DataField="bat_Cont_Amount" SortExpression="bat_Cont_Amount" HeaderText="<%$ Resources:AI360Resource, alt_receipts %>" DataFormatString="{0:c}"> <HeaderStyle Width="10%"></HeaderStyle> <ItemStyle HorizontalAlign="Left"></ItemStyle> </asp:BoundColumn> <asp:BoundColumn DataField="bat_Disb_Amount" SortExpression="bat_Disb_Amount" HeaderText="<%$ Resources:AI360Resource, alt_disb %>" DataFormatString="{0:c}"> <HeaderStyle Width="25%"></HeaderStyle> <ItemStyle HorizontalAlign="Left"></ItemStyle> </asp:BoundColumn> </Columns> </asp:DataGrid> And the code of handler is as below: protected void dtgBatches_SortCommand(object source, System.Web.UI.WebControls.DataGridSortCommandEventArgs e) { string strCurrentSort = dtgBatches.Attributes["SortExpr"]; string strNewSort = e.SortExpression; if ((strCurrentSort != null) && (strCurrentSort == strNewSort)) { //reverse direction strNewSort += " DESC"; } // Code to Set DataView dv dv.Sort = strNewSort; dtgBatches.DataSource = dv; dtgBatches.DataBind(); } The problem is that the handler never executes. The registartion for the handler is done as below: private void InitializeComponent() { this.dtgBatches.SortCommand += new System.Web.UI.WebControls.DataGridSortCommandEventHandler(this.dtgBatches_SortCommand); }

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  • why we can't initialize a servlet using constructor itself?

    - by Reddy
    Why do we have to override init() method in Servlets while we can do the initialization in the constructor and have web container call the constructor passing ServletConfig reference to servlet while calling constructor? Ofcourse container has to use reflection for this but container has to use reflection anyway to call a simple no-arg constructor

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  • Fact or fiction: Webkit’s rendering performance is much lower when used in Qt

    - by Jen
    Using Qt’s Webkit implementation renders much slower than directly implementing the Webkit engine -- is this true or just a myth? From my own experience, I found the load time of a complex page about twice as long in Qt’s “Fancy Browser” example as it does in Google Chrome (which also incorporates a port of Webkit), but I hardly think that is a fair comparison. Any insights on this?

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  • Radio Button wont work in internet explorer but works fine in firefox

    - by Mo
    Hi i have HTML code like so: <div id="action_content" class="layout"> <input type="hidden" id="action_editing" value=""/> <div id="action_types"> <input type="radio" checked name="action_type" value="EmailActionDescription" onclick="toggle_action(this);"/><label>Email</label> <input type="radio" name="action_type" value="TicketActionDescription" onclick="toggle_action(this);"/><label>Ticket</label> </div> it works fine in firefox but dosent work in internet explorer. any ideas what it could be? the buttons basically display one of 2 options, a ticket or e mail, when clicking on the ticket it just dosent show. if you require any further information please let me know. thanks

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  • batch copy files with error log on missing permissions

    - by sc911
    Hi *, I'm searching for a tool to batch-copy files, that should support the following points: copy files from a net-share report any errors show errors only or filter log on errors don't stop on an error also report if a file or a folder could not be copied due to missing permissions if possible it should have a queue where new job can be added while copying I tried the following tools: TerraCopy: takes a lot time to just calculate the time and the size of the job and does not report errors due to missing permissions (it doesn't even add those files to the copy-queue) Karne's replicator: does not report errors due to missing permissions xcopy: does a great job when using the right parameters and piping the output to a file (in the German localization xcopy /k /r /e /i /s /c /h SOURCE TARGET>LOGFILE 2>&1 will do the job. opening the logfile in IE will give you a great monitor). but quing jobs it not possible (ok, you can join them all in a batch-file, but you can not queue jobs while another one is running (hm, thinking of a batch-script that loops through a file with the source-target-config...)) to be continued Which tools do you use? Tell me! Thx sc911

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  • Logo Redesign Service

    Logos are most important part of any company?s identity. It gives a visual identity to a company, in another word it is a symbolic representative, the sight of which recalls about the brand. This sym... [Author: Alan Smith - Web Design and Development - May 27, 2010]

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