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• to track the modified rows and manually update from the TClientDataSet's Delta

  - by Vijay Bobba

  hi, Is there any way to manually track the changes done to a clientdataset's delta and update the changes manually on to then db. i have dynamically created a clientdataset and with out a provider i am able to load it with a tquery, now user will do some insert update and delete operations on the data available in the cds, and at final stage these data(modified) should be post in to database by using a tquery(not apply updates)..

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• Where is the best location to keep shared-developer website files in the linux hierarchy?

  - by Tchalvak

  I just started hosting files for a website on my server, and I'm not sure where is an appropriate place to keep them. At the moment, I have them in /var/www/name.of.virtualhost.site/www/. That's obviously not secure because anything below the final public /www/ folder is also available since the /var/www/ contents are already being served up. For example, /var/www/name.of.virtualhost.site/docs/site_policies.txt is accessible via something like defaultsite.com/name.of.virtualhost.site/docs/site_policies.txt. So where is a good place to store the files that make up a website? (when it's a site that only I'm developing, I can obviously just stick them in /home/my_username/sites/name.of.virtualhost.site/, but that doesn't work well when I want other developers to be working on the site's files as well) I'm running a LAMP stack, not that I expect it to matter.

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• boost multi_index_container and erase performance

  - by rjoshi

  I have a boost multi_index_container declared as below which is indexed by hash_unique id(unsigned long) and hash_non_unique transaction id(long). Insertion and retrieval of elements is fast but when I delete elements, it is much slower. I was expecting it to be constant time as key is hashed. e.g To erase elements from container for 10,000 elements, it takes around 2.53927016 seconds for 15,000 elements, it takes around 7.137100068 seconds for 20,000 elements, it takes around 21.391720757 seconds Is it something I am missing or is it expected behavior? class Session { public: Session() { //increment unique id static unsigned long counter = 0; boost::mutex::scoped_lock guard(mx); counter++; m_nId = counter; } unsigned long GetId() { return m_nId; } long GetTransactionHandle(){ return m_nTransactionHandle; } .... private: unsigned long m_nId; long m_nTransactionHandle; boost::mutext mx; .... }; typedef multi_index_container< Session*, indexed_by< hashed_unique< mem_fun<Session,unsigned long,&Session::GetId> >, hashed_non_unique< mem_fun<Session,unsigned long,&Session::GetTransactionHandle> > > //end indexed_by > SessionContainer; typedef SessionContainer::nth_index<0>::type SessionById; int main() { ... SessionContainer container; SessionById *pSessionIdView = &get<0>(container); unsigned counter = atoi(argv[1]); vector<Session*> vSes(counter); //insert for(unsigned i = 0; i < counter; i++) { Session *pSes = new Session(); container.insert(pSes); vSes.push_back(pSes); } timespec ts; lock_settime(CLOCK_PROCESS_CPUTIME_ID, &ts); //erase for(unsigned i = 0; i < counter; i++) { pSessionIdView->erase(vSes[i]->getId()); delete vSes[i]; } lock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts); std::cout << "Total time taken for erase:" << ts.tv_sec << "." << ts.tv_nsec << "\n"; return (EXIST_SUCCESS); }

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• PHP Web Service vs mySQL Connector on Windows Application

  - by Derek

  I have a Windows Application in C#. This application interacts with a remote mySQL database. Should I create a PHP web service to do these (insert/add/delete/update) or use mySQL connector for c#? I'm not sure which way is better. Thanks!

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• Android - Remove data from SDCard.

  - by Jeep314

  My application use the SDCard to store data (about 100 Mb of stuff). I would like to delete these file when the application is deleted through the application manager and offer a way to clear the data from there (like the Google Apps does). Any ideas ?

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• Database/Web Server and SQL Server Setup - Security?

  - by Jess

  This seems really basic, but I couldn't find an answer already ... we are looking to deploy a website to an IIS server, and a database to a separate server. We aren't sure how to best secure this for access by internal users and internet. The IIS Server is not connected to the domain, and neither is the database at the moment. Should it be? Also, if we use SQL Server authentication instead of Windows Authentication, should we just hard-code the user/password into our internal apps?

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• ISC Bind support for GSS-TSIG DDNS Updates?

  - by netlinxman

  First, has anyone EVER configured ISC bind 9.5.0 OR greater with support for GSS-TSIG Dynamic DNS Updates AND gotten it to work? If so, what is the configuration that was used to make that happen? I feel close to having this working. I see that GSS cred passes w/o apparent error during the TKEY negotiation with an Active Directory DC and the BIND DNS server: client 192.168.0.30#52314: query gss cred: "DNS/[email protected]", GSS_C_ACCEPT, 4294967256 gss-api source name (accept) is [email protected] process_gsstkey(): dns_tsigerror_noerror client 192.168.0.30#52314: send But, when the Update is sent, it is refused: client 192.168.0.30#58330: update client 192.168.0.30#58330: updating zone 'example.com/IN': update failed: rejected by secure update (REFUSED) client 192.168.0.30#58330: send Does anyone have this working in the real world?

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• Implementing a form of port knocking + Phone Factor = 2 Factor auth for RDP?

  - by jshin47

  I have been looking into how to secure a publicly-available RDP endpoint and want to implement our two-factor authentication RADIUS server, PhoneFactor. I would like to implement the following process: User opens up web app in browser In web app, user enters username + password, initiates RADIUS auth Phone factor calls user to complete auth Once user is authenticated, port 3389 is opened on user's IP on pfSense firewall. After some amount of time, firewall rule is removed for that IP I would like to know the following: Is this a typical setup? If it is a bad idea, please explain why. If it is possible, are there any packages that assist with this? Specifically, the third step, where the appropriate firewall rule would need to be added... Edit: I am aware of TS Web Gateway, but I want the users to be able to use the traditional RDP client...

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• In Rails, how should I implement a Status field for a Tasks app - integer or enum?

  - by Doug

  For a Rails 3.0 Todo app, I have a Tasks model with a Status field. What's the best way to store the Status field data (field type) and still display a human-readable version in a view (HTML table)? Status can be: 0 = Normal 1 = Active 2 = Completed Right now I have this: Rails Schema Here: create_table "tasks", :force = true do |t| t.integer "status", :limit = 1, :default = 0, :null = false Rails Model Here: class Task < ActiveRecord::Base validates_inclusion_of :status, :in => 0..2, :message => "{{value}} must be 0, 1, or 2" Rails View Here: <h1>Listing tasks</h1> <table> <tr> <th>Status</th> <th>Name</th> <th></th> <th></th> <th></th> </tr> <% @tasks.each do |task| %> <tr> <td><%= task.status %></td> <td><%= task.name %></td> <td><%= link_to 'Show', task %></td> <td><%= link_to 'Edit', edit_task_path(task) %></td> <td><%= link_to 'Delete', task, :confirm => 'Are you sure?', :method => :delete %></td> </tr> <% end %> </table> Requirements Store a Task's status in the db such that the values are easily localizable, i.e. I'm not sure I want to store "normal", "active", "completed" as a string field. Solution must work with Rails 3.0. Questions: Should I store the field as an integer (see above)? If so, how do I display the correct human readable status in an HTML table in my Rails view, e.g. show "Active" instead of "1" in the HTML table. Should I use an enum? If so, is this easy to localize later? Should I use straight strings, e.g. "Normal", "Active", "Completed" Can you provide a quick code sample of the view helper, controller or view code to make this work?

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• Erase all traces of Windows 8

  - by user1032531

  Just bought a new HP pavilion desktop with Windows 8. I wish to totally remove Windows 8 and all data on the hard drive, remove any windows partitions, delete all data, and then install a fresh Linux. Problem is I can seem to get to boot from USB or boot from CD. It appears that Windows 8 added the following two "features": UEFI which substitutes what we have known as the BIOS Secure Boot which prevents anything but the installed operating system How do I completely and totally erase all traces of Windows 8? Is it still possible to reformat the hard drive? I don't want a duel boot, I don't want to go back to Windows 7, I just want anything Windows gone.

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• Overwrite HTTP method with JAX-RS

  - by deamon

  Today's browsers (or HTML < 5) only support HTTP GET and POST, but to communicate RESTful one need PUT and DELETE too. If the workaround should not be to use Ajax, something like a hidden form field is required to overwrite the actual HTTP method. Rails uses the following trick: <input name="_method" type="hidden" value="put" /> Is there a possibility to do something similar with JAX-RS?

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• HTML5 Web Storage Cleared when Browser Clear Cache?

  - by jiewmeng

  i wonder if HTML5 Web Storage will be cleared when browser clears its cache? if it did, many ppl like me may lose data if i accidentally clear cache? or like in this comment ... Since HTML5 local storage is kept separate from js cookies (like Silverlight, Gears, Flash), it opens up a world of 3rd party privacy issues for HTML5 as these objects will likely NOT get deleted with a clear cache or delete temporary data ... where web storage is not cleared, but leads to privacy issues?

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• SQL Server Files Local or NAS or SAN?

  - by Jedi Master Spooky

  I have to install a new Server with SQL Server 2008, What do you recommend, One server with Raid 10 or the Files in a NAS? What about iSCSI should I use it? What about SAN? The server has 4Gb of RAM and that database file is about 2GB. To make my self clear today the server has no RAID, I have to implement some kind of strategy so if something happend I can have my files safe, so What should I choose Local Files, NAS, SAN? What option has the most performance, what is the more secure?

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• Configuration of Sonicwall Load Balancing

  - by jacke672

  We installed a Sonicwall NSA 240 appliance and have configured it up for our SSL VPN connection and for load balancing with 2 ADSL lines. Over the past week, I have been testing the load balancing options to optimize the connection speeds for our users - but I've run into the following: Round Robin load balancing is the ideal load balancing setting and it's roughly doubling our throughput- but, when it's active users are unable to access any SSL enabled websites such as banking, web-mail, etc. For this reason, I have been using percentage based balancing as it allows me to enable source and destination IP binding, which doesn't 'break' any secure connections but were left with the slow connection speeds we had before adding the second line. I'm looking for a method in which we can take advantage of the round robin connection speeds while allowing users to access sites with SSL certificates, all while still allowing our remote (vpn) users to connect. Any help would be appreciated. Thanks

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• javascript addEventListener memory-leaks question

  - by null_radix

  If I use addEventListener to register an event on a element, then delete the element without removing the event could I create a memory leak by doing this repeatedly?

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• How to include clean target in makefile

  - by neversaint

  I have a makefile that looks like this CXX = g++ -O2 -Wall all: code1 code2 code1: code1.cc utilities.cc $(CXX) $^ -o $@ code2: code2.cc utilities.cc $(CXX) $^ -o $@ What I want to do next is to include 'clean target' so that every time I run 'make' it will automatically delete the existing binary files of code1 and code2 before creating the new ones. I tried to put these lines at the very end of the makefile, but it doesn't work clean: rm -f $@ echo Clean done What's the right way to do it?

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• Ubuntu Startup xsp4

  - by Chin Ye

  when i type in terminal command are working fine root@syscomp:/var/www/WebSite2# xsp4 xsp4 Listening on address: 0.0.0.0 Root directory: /var/www/WebSite2 Listening on port: 9000 (non-secure) Hit Return to stop the server. but i m using script in /etc/init/GPS_WebSite.conf when the script are running fine, but not running in background when the script run one time and then closed, that is why my mono server are not running all the time, this is my GPS_WebSite.conf script, what i need to change to be running forever in background? start on login-session-start script exec > /tmp/debug-my-script.txt 2>&1 sleep 10 cd /var/www/WebSite2 xsp4 end script

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• Unit of Work pattern and persistence

  - by Mosh

  Hello, I have been reading about Unit of Work pattern but I am confused about how the UoW actually persists data. When we commit the changes, UoW should iterate through the list of Added, Updated and Deleted objects and somehow find a class responsible to Add, Update, Delete objects of a certain type. I couldn't find an example showing this technique. Any advice on this would be greatly appreciated. Mosh

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• CentOS / Redhat: Give file permission for apache and vsftp

  - by paskster

  I use CentOS 5.5 and Apache Webserver on my dedicated Server. My Folder "/var/www/myWebApp" is owned by apache, so that apache can read, write logs, etc.. But now I would like to use very secure FTP (vsftp) to upload my new files. I used to give every user rwx -Acess to "/var/www/myWebApp", but I guess this is way to insecure. On CentOS I created another user "ftpuser" for uploading files and that has "/var/www/myWebApp" as its home directory. How can I give him the permission to write into the "/var/www/myWebApp" without giving every user the same rights?

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• DD-WRT login does not work on Linux in Virtualbox

  - by superuser

  I am running on Windows 8 and installed Lubuntu 13.04 in VirtualBox. I cannot login to DD-WRT in Virtualbox. I can login to DD-WRT on Windows 8. I have used the same credentials and tried many times, but to no avail. How can I login successfully to DD-WRT in VirtualBox? I have even tried searching on the Internet but I could not find any relevant solutions. Additional Information: Using Chromium ( I have tried it on Firefox and it does not work ) Enabled secure shell: but it still does not work. If you require more information, please kindly make a comment below.

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• How do I securely execute commands as root via a web control panel?

  - by Chris J

  I would like to build a very simple PHP based web based control panel to add and remove users to/from and add and remove sections to/from nginx config files on my linode vps (Ubuntu 8.04 LTS). What is the most secure way of executing commands as root based on input from a web based control panel? I am loathe to run PHP as root (even if behind an IP tables firewall) for the obvious reasons. Suggestions welcome. It must be possible as several commercial (and bloated, for my needs) control panels offer similar functionality. Thanks

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• Nobody owner (99 99) in FTP caused by php functions !

  - by hacen

  I have a script (Joomla) that creates files and directories on the server. The problem is that it creates them under owner 99 99 (nobody) and after I can't delete or modify them by FTP without the help of the server admin. I think that is move_uploaded_file function of php. Is there any solution of this problem by the WHM or by the server admin? Can I modify the default owner in ftp?

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• JDBC Bind table in prepared statement

  - by AEIOU

  Can I bind a table name in a Java Prepared Statement? i.e. PreparedStatement pstmt = aConn.prepareStatement("SELECT column FROM ? "); pstmt.setString(1, "MY_TABLE"); Nope, no I can't. New question, anyone know how to delete a question?

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• Is there a software like PHPMyAdmin which can be configured for a single Mysql DB

  - by Ritesh M Nayak

  Is there a software like PhpMyAdmin which can be configured to access only a single database instance in a server. I cannot use PhpMyAdmin because it allows access to all databases. A view that can allow a user to create/delete/insert/update tables should do. I remember using a software similar to this but dont remember what it was. It would also be great if its in PHP.

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• ViewModel create in MVVM - my look at it

  - by netmajor

  When I want to implement ViewModel I should cut everything c# code from my Silverlight code behind(next delete .cs file and leave only .xaml file) and paste it in new class in new folder ViewModel ? It is good way of separate View from logic ?

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