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• Swiss Re increases data warehouse performance and deploys in record time

  - by KLaker

  Great information on yet another data warehouse deployment on Exadata. A little background on Swiss Re: In 2002, Swiss Re established a data warehouse for its client markets and products to gather reinsurance information across all organizational units into an integrated structure. The data warehouse provided the basis for reporting at the group level with drill-down capability to individual contracts, while facilitating application integration and data exchange by using common data standards. Initially focusing on property and casualty reinsurance information only, it now includes life and health reinsurance, insurance, and nonlife insurance information. Key highlights of the benefits that Swiss Re achieved by using Exadata: Reduced the time to feed the data warehouse and generate data marts by 58% Reduced average runtime by 24% for standard reports comfortably loading two data warehouse refreshes per day with incremental feeds Freed up technical experts by significantly minimizing time spent on tuning activities Most importantly this was one of the fastest project deployments in Swiss Re's history. They went from installation to production in just four months! What is truly surprising is the that it only took two weeks between power-on to testing the machine with full data volumes! Business teams at Swiss Re are now able to fully exploit up-to-date analytics across property, casualty, life, health insurance, and reinsurance lines to identify successful products. These points are highlighted in the following quotes from Dr. Stephan Gutzwiller, Head of Data Warehouse Services at Swiss Re:  "We were operating a complete Oracle stack, including servers, storage area network, operating systems, and databases that was well optimized and delivered very good performance over an extended period of time. When a hardware replacement was scheduled for 2012, Oracle Exadata was a natural choice—and the performance increase was impressive. It enabled us to deliver analytics to our internal customers faster, without hiring more IT staff" “The high quality data that is readily available with Oracle Exadata gives us the insight and agility we need to cater to client needs. We also can continue re-engineering to keep up with the increasing demand without having to grow the organization. This combination creates excellent business value.” Our full press release is available here: http://www.oracle.com/us/corporate/customers/customersearch/swiss-re-1-exadata-ss-2050409.html. If you want more information about how Exadata can increase the performance of your data warehouse visit our home page: http://www.oracle.com/us/products/database/exadata-database-machine/overview/index.html

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• Learn programming backwards, or "so I failed the FizzBuzz test. Now what?"

  - by moraleida

  A Little Background I'm 28 today, and I've never had any formal training in software development, but I do have two higher education degrees equivalent to a B.A in Public Relations and an Executive MBA focused on Project Management. I've worked on those fields for about 6 years total an then, 2,5 years ago I quit/lost my job and decided to shift directions. After a month thinking things through I decided to start freelancing developing small websites in WordPress. I self-learned my way into it and today I can say I run a humble but successful career developing themes and plugins from scratch for my clients - mostly agencies outsourcing some of their dev work for medium/large websites. But sometimes I just feel that not having studied enough math, or not having a formal understanding of things really holds me behind when I have to compete or work with more experienced developers. I'm constantly looking for ways to learn more but I seem to lack the basics. Unfortunately, spending 4 more years in Computer Science is not an option right now, so I'm trying to learn all I can from books and online resources. This method is never going to have NASA employ me but I really don't care right now. My goal is to first pass the bar and to be able to call myself a real programmer. I'm currently spending my spare time studying Java For Programmers (to get a hold on a language everyone says is difficult/demanding), reading excerpts of Code Complete (to get hold of best practices) and also Code: The Hidden Language of Computer Hardware and Software (to grasp the inner workings of computers). TL;DR So, my current situation is this: I'm basically capable of writing any complete system in PHP (with the help of Google and a few books), integrating Ajax, SQL and whatnot, and maybe a little slower than an experienced dev would expect due to all the research involved. But I was stranded yesterday trying to figure out (not Google) a solution for the FizzBuzz test because I didn't have the if($n1 % $n2 == 0) method modulus operator memorized. What would you suggest as a good way to solve this dilemma? What subjects/books should I study that would get me solving problems faster and maybe more "in a programmers way"? EDIT - Seems that there was some confusion about what did I not know to solve FizzBuzz. Maybe I didn't express myself right: I knew the steps needed to solve the problem. What I didn't memorize was the modulus operator. The problem was in transposing basic math to the program, not in knowing basic math. I took the test for fun, after reading about it on Coding Horror. I just decided it was a good base-comparison line between me and formally-trained devs. I just used this as an example of how not having dealt with math in a computer environment before makes me lose time looking up basic things like modulus operators to be able to solve simple problems.

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• Legality of similar games

  - by Jamie Taylor

  This is my first question on GD.SE, and I hope it's in the right place. A little background: I'm an amateur (read: not explicitly employed to develop games, but am employed as a software developer) game developer and took a ComSci with Games Development degree. My Question: What is the legal situation/standpoint of creating a copycat title? I know that there are only N number of ways of solving a problem, and N number of ways to design a piece of software. Say that an independent developer designed a copycat game (a Tetris clone in this example) for instance, and decided to use that game to generate income for themselves as well as interest for their other products. Say the developer adds a disclaimer into the software along the lines of "based on , originally released c. by ." Are there any legal problems/grey areas with the developer in this example releasing this game, commercially? Would they run into legal problems? Should the developer in this example expect cease and desist orders or law suit claims from original publishers? Have original publishers been known to, effectively, kill independent projects because they are a little too close to older titles? I know that there was, at least, one attempt by a group of independent developers to remake Sonic the Hedgehog 2 and Sega shut them down. I also know of Sega shutting down development of the independent Streets of Rage Remake. I know that "but it's an old game, your honour," isn't a great legal standpoint when it comes to defending yourself. But, could an independent developer have a law suit filed against them for re-implementing an older title in a new way? I know that there are a lot of copycat versions of the older titles like Tetris available on app stores (and similar services), and that it would be very difficult for a major publisher to shut them all down. Regardless of this, is making a Tetris (or other game) copycat/clone illegal? We were taught lots of different things at University, but we never covered copyright law. I'm presuming that their thought behind it was "IF these students get jobs in games development, they wont need to know anything about the legal side of it, because their employers will have legal departments... presumably" tl;dr Is it illegal to create a clone or copycat of an old title, and make money from it?

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• Push-Based Events in a Services Oriented Architecture

  - by Colin Morelli

  I have come to a point, in building a services oriented architecture (on top of Thrift), that I need to expose events and allow listeners. My initial thought was, "create an EventService" to handle publishing and subscribing to events. That EventService can use whatever implementation it desires to actually distribute the events. My client automatically round-robins service requests to available service hosts which are determined using Zookeeper-based service discovery. So, I'd probably use JMS inside of EventService mainly for the purpose of persisting messages (in the event that a service host for EventService goes down before it can distribute the message to all of the available listeners). When I started considering this, I began looking into the differences between Queues and Topics. Topics unfortunately won't work for me, because (at least for now), all listeners must receive the message (even if they were down at the time the event was pushed, or hadn't made a subscription yet because they haven't completed startup (during deployment, for example) - messages should be queued until the service is available). However, I don't want EventService to be responsible for handling all of the events. I don't think it should have the code to react to events inside of it. Each of the services should do what it needs with a given event. This would indicate that each service would need a JMS connection, which questions the value of having EventService at all (as the services could individually publish and subscribe to JMS directly). However, it also couples all of the services to JMS (when I'd rather that there be a single service that's responsible for determining how to distribute events). What I had thought was to publish an event to EventService, which pulls a configuration of listeners from some configuration source (database, flat file, irrelevant for now). It replicates the message and pushes each one back into a queue with information specific to that listener (so, if there are 3 listeners, 1 event would become 3 events in JMS). Then, another thread in EventService (which is replicated, running on multiple hots) would be pulling from the queue, attempting to make the service call to the "listener", and returning the message to the queue (if the service is down), or discarding the message (if the listener completed successfully). tl;dr If I have an EventService that is responsible for receiving events and delegating service calls to "event listeners," (which are really just endpoints on other services), how should it know how to craft the service call? Should I create a generic "Event" object that is shared among all services? Then, the EventService can just construct this object and pass it to the service call. Or is there a better answer to this problem entirely?

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• My father wants to learn PHP-MySQL to port his application. What I should do to help?

  - by adijiwa

  My father is a doctor/physician. About 15 years ago he started writing an application to handle his patient's medical records in his clinic at home. The app has the ability to input patient's medical records (obviously), search patients by some criteria, manage medicine stocks, output receipt to printer, and some more CRUDs. He wrote it in dBase III+. A few years later he migrated to FoxPro 2.6 for DOS and finally in a few more years he rewrote his app in Visual FoxPro 9. And now (actually two years ago) he wants to rewrite it in PHP, but he don't know how. The Visual FoxPro version of this app is still running and has no serious problem except sometimes it performs slowly. Usually there are 1-5 concurrent users. The binary and database files are shared via windows share. He did all the coding as a hobby and for free (it is for his own clinic after all). He also use this app in two other offices he managed. Some reasons of why he wants to rewrite in PHP-MySQL: He wants to learn Easier to deploy (?) Easier client setup, need only a browser What should I do to help my father? How should he start? I explored some options: I let my father learn PHP and MySQL (and HTML (and JavaScript?)) from scratch. I create/bundle framework. I'm thinking on bundling CodeIgniter and a web UI framework (any suggestion?) especially to reduce effort on writing presentation codes. What do you think? tl;dr My father (a doctor) wants to rewrite his Visual FoxPro app in PHP-MySQL. He knows very little of PHP and MySQL but he wants to learn. What should I do to help? How should he start? Some facts: My father is 50 years old. His first encounter with a PC is in early 1980s. It was IBM PC with Intel 8088. He knows BASIC. He taught me how to use DOS and how to program with BASIC. The other language he knows fairly well is dBase/FoxPro. I got my bachelor CS degree last year. I know the internals of my father's app because sometime he wants me to help him writing his app. Sorry for my english.

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• Inherit one instance variable from the global scope

  - by Julian

  I'm using Curses to create a command line GUI with Ruby. Everything's going well, but I have hit a slight snag. I don't think Curses knowledge (esoteric to be fair) is required to answer this question, just Ruby concepts such as objects and inheritance. I'm going to explain my problem now, but if I'm banging on, just look at the example below. Basically, every Window instance needs to have .close called on it in order to close it. Some Window instances have other Windows associated with it. When closing a Window instance, I want to be able to close all of the other Window instances associated with it at the same time. Because associated Windows are generated in a logical fashion, (I append the name with a number: instance_variable_set(self + integer, Window.new(10,10,10,10)) ), it's easy to target generated windows, because methods can anticipate what assosiated windows will be called, (I can recreate the instance variable name from scratch, and almost query it: instance_variable_get(self + integer). I have a delete method that handles this. If the delete method is just a normal, global method (called like this: delete_window(@win543) then everything works perfectly. However, if the delete method is an instance method, which it needs to be in-order to use the self keyword, it doesn't work for a very clear reason; it can 'query' the correct instance variable perfectly well (instance_variable_get(self + integer)), however, because it's an instance method, the global instances aren't scoped to it! Now, one way around this would obviously be to simply make a global method like this: delete_window(@win543). But I have attributes associated with my window instances, and it all works very elegantly. This is very simplified, but it literally translates the problem exactly: class Dog def speak woof end end def woof if @dog_generic == nil puts "@dog_generic isn't scoped when .woof is called from a class method!\n" else puts "@dog_generic is scoped when .woof is called from the global scope. See:\n" + @dog_generic end end @dog_generic = "Woof!" lassie = Dog.new lassie.speak #=> @dog_generic isn't scoped when .woof is called from an instance method!\n woof #=> @dog_generic is scoped when .woof is called from the global scope. See:\nWoof! TL/DR: I need lassie.speak to return this string: "@dog_generic is scoped when .woof is called from the global scope. See:\nWoof!" @dog_generic must remain as an insance variable. The use of Globals or Constants is not acceptable. Could woof inherit from the Global scope? Maybe some sort of keyword: def woof < global # This 'code' is just to conceptualise what I want to do, don't take offence! end Is there some way the .woof method could 'pull in' @dog_generic from the global scope? Will @dog_generic have to be passed in as a parameter?

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• Can't change color of sprites in unity

  - by Aceleeon

  I would like to create a script that targets a 2d sprite "enemy" and changes their color to red (slightly opaque red if possible) when you hit tab. I have this code from a 3d tutorial hoping the transition would work. But it does not. I only get the script to cycle the enemy tags but never changes the color of the sprite. I have the code below I'm very new to coding, and any help would be FANTASTIC! HELP! hahah. TL;DR Cant get 3d color targeting to work for 2D. Check out the c#code below using UnityEngine; using System.Collections; using System.Collections.Generic; public class Targetting : MonoBehaviour { public List targets; public Transform selectedTarget; private Transform myTransform; // Use this for initialization void Start () { targets = new List(); selectedTarget = null; myTransform = transform; AddAllEnemies(); } public void AddAllEnemies() { GameObject[] go = GameObject.FindGameObjectsWithTag("Enemy"); foreach(GameObject enemy in go) AddTarget(enemy.transform); } public void AddTarget(Transform enemy) { targets.Add(enemy); } private void SortTargetsByDistance() { targets.Sort(delegate(Transform t1,Transform t2) { return Vector3.Distance(t1.position, myTransform.position).CompareTo(Vector3.Distance(t2.position, myTransform.position)); }); } private void TargetEnemy() { if(selectedTarget == null) { SortTargetsByDistance(); selectedTarget = targets[0]; } else { int index = targets.IndexOf(selectedTarget); if(index < targets.Count -1) { index++; } else { index = 0; } selectedTarget = targets[index]; } } private void SelectTarget() { selectedTarget.GetComponent().color = Color.red; } private void DeselectTarget() { selectedTarget.GetComponent().color = Color.blue; selectedTarget = null; } // Update is called once per frame void Update() { if(Input.GetKeyDown(KeyCode.Tab)) { TargetEnemy(); } } }

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• ATI propriatery drivers install latest 12.8, broke my kernel. Stuck on kernel 3.2.0-26

  - by user66987

  I messed up a bit. Hoping some here can help me. I tried to install the newest catalyst 12.8. Sadly, this broke my system. I was stuck in low graphics mode. I finally managed to restore the proprietary drivers, and get into ubuntu again. But now I am stuck on kernel 3.2.0.26. I had installed kernel 3.2.0-30, but the system no longer sees it. I have kernel 3.2.0-29 too, but the system cannot see that as well. In the grub menu. When I use sudo update-grub, they are both listed. Here are the output I get: Searching for GRUB installation directory ... found: /boot/grub Cannot determine root device. Assuming /dev/hda1 This error is probably caused by an invalid /etc/fstab Searching for default file ... found: /boot/grub/default Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst Searching for splash image ... none found, skipping ... Found kernel: /boot/vmlinuz-3.2.0-30-generic Found kernel: /boot/vmlinuz-3.2.0-29-generic Found kernel: /boot/vmlinuz-3.2.0-27-generic Found kernel: /boot/vmlinuz-3.2.0-26-generic Found GRUB 2: /boot/grub/core.img Found kernel: /boot/memtest86+.bin Updating /boot/grub/menu.lst ... done I have searched everywhere to find a solution to my problem, but can't find any solutions. If you need any log outputs to figure out the problem, please let me know which ones. Update: here is the output for grub.cfg # # DO NOT EDIT THIS FILE # # It is automatically generated by grub-mkconfig using templates # from /etc/grub.d and settings from /etc/default/grub # ### BEGIN /etc/grub.d/00_header ### if [ -s $prefix/grubenv ]; then set have_grubenv=true load_env fi set default="0" if [ "${prev_saved_entry}" ]; then set saved_entry="${prev_saved_entry}" save_env saved_entry set prev_saved_entry= save_env prev_saved_entry set boot_once=true fi function savedefault { if [ -z "${boot_once}" ]; then saved_entry="${chosen}" save_env saved_entry fi } function recordfail { set recordfail=1 if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi } function load_video { insmod vbe insmod vga insmod video_bochs insmod video_cirrus } insmod part_msdos insmod ext2 set root='(hd2,msdos1)' search --no-floppy --fs-uuid --set=root 270c7c58-06d8-4e6b-b9bb-8d92f46adc0b if loadfont /usr/share/grub/unicode.pf2 ; then set gfxmode=auto load_video insmod gfxterm insmod part_msdos insmod ext2 set root='(hd2,msdos1)' search --no-floppy --fs-uuid --set=root 270c7c58-06d8-4e6b-b9bb-8d92f46adc0b set locale_dir=($root)/boot/grub/locale set lang=nb_NO insmod gettext fi terminal_output gfxterm if [ "${recordfail}" = 1 ]; then set timeout=-1 else set timeout=10 fi ### END /etc/grub.d/00_header ### ### BEGIN /etc/grub.d/05_debian_theme ### set menu_color_normal=white/black set menu_color_highlight=black/light-gray if background_color 44,0,30; then clear fi ### END /etc/grub.d/05_debian_theme ### ### BEGIN /etc/grub.d/10_linux ### function gfxmode { set gfxpayload="${1}" if [ "${1}" = "keep" ]; then set vt_handoff=vt.handoff=7 else set vt_handoff= fi } if [ "${recordfail}" != 1 ]; then if [ -e ${prefix}/gfxblacklist.txt ]; then if hwmatch ${prefix}/gfxblacklist.txt 3; then if [ ${match} = 0 ]; then set linux_gfx_mode=keep else set linux_gfx_mode=text fi else set linux_gfx_mode=text fi else set linux_gfx_mode=keep fi else set linux_gfx_mode=text fi export linux_gfx_mode if [ "${linux_gfx_mode}" != "text" ]; then load_video; fi menuentry 'Ubuntu, med Linux 3.2.0-26-generic' --class ubuntu --class gnu-linux --class gnu --class os { recordfail gfxmode $linux_gfx_mode insmod gzio insmod part_msdos insmod ext2 set root='(hd2,msdos1)' search --no-floppy --fs-uuid --set=root 270c7c58-06d8-4e6b-b9bb-8d92f46adc0b linux /boot/vmlinuz-3.2.0-26-generic root=UUID=270c7c58-06d8-4e6b-b9bb-8d92f46adc0b ro quiet splash $vt_handoff initrd /boot/initrd.img-3.2.0-26-generic } menuentry 'Ubuntu, med Linux 3.2.0-26-generic (gjenopprettelsesmodus)' --class ubuntu --class gnu-linux --class gnu --class os { recordfail insmod gzio insmod part_msdos insmod ext2 set root='(hd2,msdos1)' search --no-floppy --fs-uuid --set=root 270c7c58-06d8-4e6b-b9bb-8d92f46adc0b echo 'Laster Linux 3.2.0-26-generic ...' linux /boot/vmlinuz-3.2.0-26-generic root=UUID=270c7c58-06d8-4e6b-b9bb-8d92f46adc0b ro recovery nomodeset echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-3.2.0-26-generic } submenu "Previous Linux versions" { menuentry 'Ubuntu, med Linux 3.2.0-25-generic' --class ubuntu --class gnu-linux --class gnu --class os { recordfail gfxmode $linux_gfx_mode insmod gzio insmod part_msdos insmod ext2 set root='(hd2,msdos1)' search --no-floppy --fs-uuid --set=root 270c7c58-06d8-4e6b-b9bb-8d92f46adc0b linux /boot/vmlinuz-3.2.0-25-generic root=UUID=270c7c58-06d8-4e6b-b9bb-8d92f46adc0b ro quiet splash $vt_handoff initrd /boot/initrd.img-3.2.0-25-generic } menuentry 'Ubuntu, med Linux 3.2.0-25-generic (gjenopprettelsesmodus)' --class ubuntu --class gnu-linux --class gnu --class os { recordfail insmod gzio insmod part_msdos insmod ext2 set root='(hd2,msdos1)' search --no-floppy --fs-uuid --set=root 270c7c58-06d8-4e6b-b9bb-8d92f46adc0b echo 'Laster Linux 3.2.0-25-generic ...' linux /boot/vmlinuz-3.2.0-25-generic root=UUID=270c7c58-06d8-4e6b-b9bb-8d92f46adc0b ro recovery nomodeset echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-3.2.0-25-generic } menuentry 'Ubuntu, med Linux 3.2.0-24-generic' --class ubuntu --class gnu-linux --class gnu --class os { recordfail gfxmode $linux_gfx_mode insmod gzio insmod part_msdos insmod ext2 set root='(hd2,msdos1)' search --no-floppy --fs-uuid --set=root 270c7c58-06d8-4e6b-b9bb-8d92f46adc0b linux /boot/vmlinuz-3.2.0-24-generic root=UUID=270c7c58-06d8-4e6b-b9bb-8d92f46adc0b ro quiet splash $vt_handoff initrd /boot/initrd.img-3.2.0-24-generic } menuentry 'Ubuntu, med Linux 3.2.0-24-generic (gjenopprettelsesmodus)' --class ubuntu --class gnu-linux --class gnu --class os { recordfail insmod gzio insmod part_msdos insmod ext2 set root='(hd2,msdos1)' search --no-floppy --fs-uuid --set=root 270c7c58-06d8-4e6b-b9bb-8d92f46adc0b echo 'Laster Linux 3.2.0-24-generic ...' linux /boot/vmlinuz-3.2.0-24-generic root=UUID=270c7c58-06d8-4e6b-b9bb-8d92f46adc0b ro recovery nomodeset echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-3.2.0-24-generic } menuentry 'Ubuntu, med Linux 3.2.0-23-generic' --class ubuntu --class gnu-linux --class gnu --class os { recordfail gfxmode $linux_gfx_mode insmod gzio insmod part_msdos insmod ext2 set root='(hd2,msdos1)' search --no-floppy --fs-uuid --set=root 270c7c58-06d8-4e6b-b9bb-8d92f46adc0b linux /boot/vmlinuz-3.2.0-23-generic root=UUID=270c7c58-06d8-4e6b-b9bb-8d92f46adc0b ro quiet splash $vt_handoff initrd /boot/initrd.img-3.2.0-23-generic } menuentry 'Ubuntu, med Linux 3.2.0-23-generic (gjenopprettelsesmodus)' --class ubuntu --class gnu-linux --class gnu --class os { recordfail insmod gzio insmod part_msdos insmod ext2 set root='(hd2,msdos1)' search --no-floppy --fs-uuid --set=root 270c7c58-06d8-4e6b-b9bb-8d92f46adc0b echo 'Laster Linux 3.2.0-23-generic ...' linux /boot/vmlinuz-3.2.0-23-generic root=UUID=270c7c58-06d8-4e6b-b9bb-8d92f46adc0b ro recovery nomodeset echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-3.2.0-23-generic } } ### END /etc/grub.d/10_linux ### ### BEGIN /etc/grub.d/20_linux_xen ### ### END /etc/grub.d/20_linux_xen ### ### BEGIN /etc/grub.d/20_memtest86+ ### menuentry "Memory test (memtest86+)" { insmod part_msdos insmod ext2 set root='(hd2,msdos1)' search --no-floppy --fs-uuid --set=root 270c7c58-06d8-4e6b-b9bb-8d92f46adc0b linux16 /boot/memtest86+.bin } menuentry "Memory test (memtest86+, serial console 115200)" { insmod part_msdos insmod ext2 set root='(hd2,msdos1)' search --no-floppy --fs-uuid --set=root 270c7c58-06d8-4e6b-b9bb-8d92f46adc0b linux16 /boot/memtest86+.bin console=ttyS0,115200n8 } ### END /etc/grub.d/20_memtest86+ ### ### BEGIN /etc/grub.d/30_os-prober ### menuentry "Windows 7 (loader) (on /dev/sdb1)" --class windows --class os { insmod part_msdos insmod ntfs set root='(hd1,msdos1)' search --no-floppy --fs-uuid --set=root 448AF3CE8AF3BA8E chainloader +1 } ### END /etc/grub.d/30_os-prober ### ### BEGIN /etc/grub.d/40_custom ### # This file provides an easy way to add custom menu entries. Simply type the # menu entries you want to add after this comment. Be careful not to change # the 'exec tail' line above. ### END /etc/grub.d/40_custom ### ### BEGIN /etc/grub.d/41_custom ### if [ -f $prefix/custom.cfg ]; then source $prefix/custom.cfg; fi ### END /etc/grub.d/41_custom ### How can I set kernel 3.2.0.30 as the default kernel? According to this file, kernel 3.2.0-30 does not exist.

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• Is Ubuntu recognizing and/or using my NVIDIA graphics card?

  - by user212860

  This is my first post here, and I'm pretty new to Ubuntu/Linux. I currently have no other OS except for Ubuntu 13.10. (I used to have Win7 until i got a new terabyte hard drive). My current PC build, if any of this helps: CPU: Intel i5 quad-core Graphics: NVIDIA GeForce GTX 650 RAM: 8 GB HDD: 1 TB SATA 3 Motherboard: MSi Z77 A-G41 OS Ubuntu 13.10 So I recently installed Ubuntu 13.10 and put Steam on it, and I'm seeing that my games run a lot slower than they did when I had Win7. I figured it was a graphics problem, so I checked System Settings Details Overview. It says in "Graphics" that I have "Gallium 0.4 on NVE7" (don't really know what that is). Does this mean that Ubuntu is not using my graphics card? In System Settings Software & Updates Additional Drivers, it clearly shows like this: NVIDIA Corporation: GK107 [GeForce GTX 650] -This device is using an alternative driver (And then it shows a list of drivers that I can switch back and forth to) So this is a bit confusing. In Software and Updates, it clearly shows that I have my NVIDIA card installed, and that I have a driver selected for it. But in System Settings, it shows I have some Gallium 0.4 thing. I had done a bit of research, and ended up typing command: "lspci|grep VGA" in the Terminal. It showed this in response: VGA compatible controller: NVIDIA Corporation GK107 [GeForce GTX 650] (rev a1) The Terminal seems to recognize my graphics card. What it looks like to me, is that I don't have the proper driver, and I might be using my CPU's integrated graphics. When I switch around which driver I am using in that list, it still does not see my card in System Settings. Some of the drivers in the list give me some sort of OpenGL error when I try to run a game. It might just be that my games are running slow because the game developers have not optimized it for Ubuntu that well. However, that still doesn't take away from the fact that System Settings is not showing my NVIDIA card. TL;DR Version: How do I know if my video card is being recognized/used? If my video card is not being used, what is the best way fix that? Please make your answers easy to understand. I do not mind wordy responses, as long as I can follow what you're saying. Any help would be greatly appreciated! Thanks, Jabber5

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• How to temporarily save the result of the query, to use in another?

  - by Truth

  I have this problem I think you may help me with. P.S. I'm not sure how to call this, so if anyone finds a more appropriate title, please do edit. Background I'm making this application for searching bus transit lines. Bus lines are a 3 digit number, and is unique and will never change. The requirement is to be able to search for lines from stop A to stop B. The user interface is already successful in hinting the user to only use valid stop names. The requirement is to be able to display if a route has a direct line, and if not, display a 2-line and even 3-line combination. Example: I need to get from point A to point D. The program should show: If there's a direct line A-D. If not, display alternative, 2 line combos, such as A-C, C-D. If there aren't any 2-line combos, search for 3-line combos: A-B, B-C, C-D. Of course, the app should display bus line numbers, as well as when to switch buses. What I have: My database is structured as follows (simplified, actual database includes locations and times and whatnot): +-----------+ | bus_stops | +----+------+ | id | name | +----+------+ +-------------------------------+ | lines_stops_relationship | +-------------+---------+-------+ | bus_line | stop_id | order | +-------------+---------+-------+ Where lines_stops_relationship describe a many-to-many relationship between the bus lines and the stops. Order, signifies the order in which stops appear in a single line. Not all lines go back and forth, and order has meaning (point A with order 2 comes after point B with order 1). The Problem We find out if a line can pass through the route easily enough. Just search for a single line which passes through both points in the correct order. How can I find if there's a 2/3 line combo? I was thinking to search for a line which matches the source stop, and one for the destination stop, and see if I can get a common stop between them, where the user can switch buses. How do I remember that stop? 3 line combo is even trickier, I find a line for the source, and a line for the destination, and then what? Search for a line which has 2 stops I guess, but again, How do I remember the stops? tl;dr How do I remember results from a query to be able to use it again? I'm hoping to achieve this in a single query (for each, a query for 1-line routes, a query for 2, and a query for 3-line combos). Note: I don't mind if someone suggests a completely different approach than what I have, I'm open to any solutions. Will award any assistance with a cookie and an upvote. Thanks in advance!

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• Session Id in url and/or cookie? [closed]

  - by Jacco

  Most people advice against rewriting every (internal) url to include the sessionId (both GET and POST). The standard argument against it seems to be:   If an attacker gets hold of the sessionId, they can hijack the session.   With the sessionId in the url, it easily leaks to the attacker (by referer etc.) But what if you put the sessionId in both an (encrypted) cookie and the url. if the sessionId in either the cookie or the url is missing or if they do not match, decline the request. Let's pretend the website in question is free of xss holes, the cookie encryption is strong enough, etc. etc. Then what is the increased risk of rewriting every url to include the sessionId? UPDATE: @Casper That is a very good point. so up to now there are 2 reasons: bad for search engines / SEO if used in public part of the website can cause trouble when users post an url with a session Id on a forum, send it trough email or bookmark the page apart from the:   It increases the security risk, but it is not clear what the increased risk is. some background info: I've a website that offers blog-like service to travellers. I cannot be sure cookies work nor can I require cookies to work. Most computers in internet cafes are old and not (even close to) up-to-date. The user has no control over them and the connection can be very unreliable for some more 'off the beaten path' locations. Binding the session to an IP-address is not possible, some places use load-balancing proxies with multiple IP addresses. (and from China there is The Great Firewall). Upon receiving the first cookie back, I flag cookies as mandatory. However, if the cookie was flagged as mandatory but not there, I ask for their password once more, knowing their session from the url. (Also cookies have a 1 time token in them, but that's not the point of this question). UPDATE 2: The conclusion seems to be that there are no extra *security* issues when you expose you session id trough the URL while also keeping a copy of the session id in an encrypted cookie. Do not hesitate to add additional information about any possible security implications

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• Help getting frame rate (fps) up in Python + Pygame

  - by Jordan Magnuson

  I am working on a little card-swapping world-travel game that I sort of envision as a cross between Bejeweled and the 10 Days geography board games. So far the coding has been going okay, but the frame rate is pretty bad... currently I'm getting low 20's on my Core 2 Duo. This is a problem since I'm creating the game for Intel's March developer competition, which is squarely aimed at netbooks packing underpowered Atom processors. Here's a screen from the game: ![www.necessarygames.com/my_games/betraveled/betraveled-fps.png][1] I am very new to Python and Pygame (this is the first thing I've used them for), and am sadly lacking in formal CS training... which is to say that I think there are probably A LOT of bad practices going on in my code, and A LOT that could be optimized. If some of you older Python hands wouldn't mind taking a look at my code and seeing if you can't find any obvious areas for optimization, I would be extremely grateful. You can download the full source code here: http://www.necessarygames.com/my_games/betraveled/betraveled_src0328.zip Compiled exe here: www.necessarygames.com/my_games/betraveled/betraveled_src0328.zip One thing I am concerned about is my event manager, which I feel may have some performance wholes in it, and another thing is my rendering... I'm pretty much just blitting everything to the screen all the time (see the render routines in my game_components.py below); I recently found out that you should only update the areas of the screen that have changed, but I'm still foggy on how that accomplished exactly... could this be a huge performance issue? Any thoughts are much appreciated! As usual, I'm happy to "tip" you for your time and energy via PayPal. Jordan Here are some bits of the source: Main.py #Remote imports import pygame from pygame.locals import * #Local imports import config import rooms from event_manager import * from events import * class RoomController(object): """Controls which room is currently active (eg Title Screen)""" def __init__(self, screen, ev_manager): self.room = None self.screen = screen self.ev_manager = ev_manager self.ev_manager.register_listener(self) self.room = self.set_room(config.room) def set_room(self, room_const): #Unregister old room from ev_manager if self.room: self.room.ev_manager.unregister_listener(self.room) self.room = None #Set new room based on const if room_const == config.TITLE_SCREEN: return rooms.TitleScreen(self.screen, self.ev_manager) elif room_const == config.GAME_MODE_ROOM: return rooms.GameModeRoom(self.screen, self.ev_manager) elif room_const == config.GAME_ROOM: return rooms.GameRoom(self.screen, self.ev_manager) elif room_const == config.HIGH_SCORES_ROOM: return rooms.HighScoresRoom(self.screen, self.ev_manager) def notify(self, event): if isinstance(event, ChangeRoomRequest): if event.game_mode: config.game_mode = event.game_mode self.room = self.set_room(event.new_room) def render(self, surface): self.room.render(surface) #Run game def main(): pygame.init() screen = pygame.display.set_mode(config.screen_size) ev_manager = EventManager() spinner = CPUSpinnerController(ev_manager) room_controller = RoomController(screen, ev_manager) pygame_event_controller = PyGameEventController(ev_manager) spinner.run() # this runs the main function if this script is called to run. # If it is imported as a module, we don't run the main function. if __name__ == "__main__": main() event_manager.py #Remote imports import pygame from pygame.locals import * #Local imports import config from events import * def debug( msg ): print "Debug Message: " + str(msg) class EventManager: #This object is responsible for coordinating most communication #between the Model, View, and Controller. def __init__(self): from weakref import WeakKeyDictionary self.listeners = WeakKeyDictionary() self.eventQueue= [] self.gui_app = None #---------------------------------------------------------------------- def register_listener(self, listener): self.listeners[listener] = 1 #---------------------------------------------------------------------- def unregister_listener(self, listener): if listener in self.listeners: del self.listeners[listener] #---------------------------------------------------------------------- def post(self, event): if isinstance(event, MouseButtonLeftEvent): debug(event.name) #NOTE: copying the list like this before iterating over it, EVERY tick, is highly inefficient, #but currently has to be done because of how new listeners are added to the queue while it is running #(eg when popping cards from a deck). Should be changed. See: http://dr0id.homepage.bluewin.ch/pygame_tutorial08.html #and search for "Watch the iteration" for listener in list(self.listeners): #NOTE: If the weakref has died, it will be #automatically removed, so we don't have #to worry about it. listener.notify(event) #------------------------------------------------------------------------------ class PyGameEventController: """...""" def __init__(self, ev_manager): self.ev_manager = ev_manager self.ev_manager.register_listener(self) self.input_freeze = False #---------------------------------------------------------------------- def notify(self, incoming_event): if isinstance(incoming_event, UserInputFreeze): self.input_freeze = True elif isinstance(incoming_event, UserInputUnFreeze): self.input_freeze = False elif isinstance(incoming_event, TickEvent): #Share some time with other processes, so we don't hog the cpu pygame.time.wait(5) #Handle Pygame Events for event in pygame.event.get(): #If this event manager has an associated PGU GUI app, notify it of the event if self.ev_manager.gui_app: self.ev_manager.gui_app.event(event) #Standard event handling for everything else ev = None if event.type == QUIT: ev = QuitEvent() elif event.type == pygame.MOUSEBUTTONDOWN and not self.input_freeze: if event.button == 1: #Button 1 pos = pygame.mouse.get_pos() ev = MouseButtonLeftEvent(pos) elif event.type == pygame.MOUSEMOTION: pos = pygame.mouse.get_pos() ev = MouseMoveEvent(pos) #Post event to event manager if ev: self.ev_manager.post(ev) #------------------------------------------------------------------------------ class CPUSpinnerController: def __init__(self, ev_manager): self.ev_manager = ev_manager self.ev_manager.register_listener(self) self.clock = pygame.time.Clock() self.cumu_time = 0 self.keep_going = True #---------------------------------------------------------------------- def run(self): if not self.keep_going: raise Exception('dead spinner') while self.keep_going: time_passed = self.clock.tick() fps = self.clock.get_fps() self.cumu_time += time_passed self.ev_manager.post(TickEvent(time_passed, fps)) if self.cumu_time >= 1000: self.cumu_time = 0 self.ev_manager.post(SecondEvent()) pygame.quit() #---------------------------------------------------------------------- def notify(self, event): if isinstance(event, QuitEvent): #this will stop the while loop from running self.keep_going = False rooms.py #Remote imports import pygame #Local imports import config import continents from game_components import * from my_gui import * from pgu import high class Room(object): def __init__(self, screen, ev_manager): self.screen = screen self.ev_manager = ev_manager self.ev_manager.register_listener(self) def notify(self, event): if isinstance(event, TickEvent): pygame.display.set_caption('FPS: ' + str(int(event.fps))) self.render(self.screen) pygame.display.update() def get_highs_table(self): fname = 'high_scores.txt' highs_table = None config.all_highs = high.Highs(fname) if config.game_mode == config.TIME_CHALLENGE: if config.difficulty == config.EASY: highs_table = config.all_highs['time_challenge_easy'] if config.difficulty == config.MED_DIF: highs_table = config.all_highs['time_challenge_med'] if config.difficulty == config.HARD: highs_table = config.all_highs['time_challenge_hard'] if config.difficulty == config.SUPER: highs_table = config.all_highs['time_challenge_super'] elif config.game_mode == config.PLAN_AHEAD: pass return highs_table class TitleScreen(Room): def __init__(self, screen, ev_manager): Room.__init__(self, screen, ev_manager) self.background = pygame.image.load('assets/images/interface/background.jpg').convert() #Initialize #--------------------------------------- self.gui_form = gui.Form() self.gui_app = gui.App(config.gui_theme) self.ev_manager.gui_app = self.gui_app c = gui.Container(align=0,valign=0) #Quit Button #--------------------------------------- b = StartGameButton(ev_manager=self.ev_manager) c.add(b, 0, 0) self.gui_app.init(c) def render(self, surface): surface.blit(self.background, (0, 0)) #GUI self.gui_app.paint(surface) class GameModeRoom(Room): def __init__(self, screen, ev_manager): Room.__init__(self, screen, ev_manager) self.background = pygame.image.load('assets/images/interface/background.jpg').convert() self.create_gui() #Create pgu gui elements def create_gui(self): #Setup #--------------------------------------- self.gui_form = gui.Form() self.gui_app = gui.App(config.gui_theme) self.ev_manager.gui_app = self.gui_app c = gui.Container(align=0,valign=-1) #Mode Relaxed Button #--------------------------------------- b = GameModeRelaxedButton(ev_manager=self.ev_manager) self.b = b print b.rect c.add(b, 0, 200) #Mode Time Challenge Button #--------------------------------------- b = TimeChallengeButton(ev_manager=self.ev_manager) self.b = b print b.rect c.add(b, 0, 250) #Mode Think Ahead Button #--------------------------------------- # b = PlanAheadButton(ev_manager=self.ev_manager) # self.b = b # print b.rect # c.add(b, 0, 300) #Initialize #--------------------------------------- self.gui_app.init(c) def render(self, surface): surface.blit(self.background, (0, 0)) #GUI self.gui_app.paint(surface) class GameRoom(Room): def __init__(self, screen, ev_manager): Room.__init__(self, screen, ev_manager) #Game mode #--------------------------------------- self.new_board_timer = None self.game_mode = config.game_mode config.current_highs = self.get_highs_table() self.highs_dialog = None self.game_over = False #Images #--------------------------------------- self.background = pygame.image.load('assets/images/interface/game screen2-1.jpg').convert() self.logo = pygame.image.load('assets/images/interface/logo_small.png').convert_alpha() self.game_over_text = pygame.image.load('assets/images/interface/text_game_over.png').convert_alpha() self.trip_complete_text = pygame.image.load('assets/images/interface/text_trip_complete.png').convert_alpha() self.zoom_game_over = None self.zoom_trip_complete = None self.fade_out = None #Text #--------------------------------------- self.font = pygame.font.Font(config.font_sans, config.interface_font_size) #Create game components #--------------------------------------- self.continent = self.set_continent(config.continent) self.board = Board(config.board_size, self.ev_manager) self.deck = Deck(self.ev_manager, self.continent) self.map = Map(self.continent) self.longest_trip = 0 #Set pos of game components #--------------------------------------- board_pos = (SCREEN_MARGIN[0], 109) self.board.set_pos(board_pos) map_pos = (config.screen_size[0] - self.map.size[0] - SCREEN_MARGIN[0], 57); self.map.set_pos(map_pos) #Trackers #--------------------------------------- self.game_clock = Chrono(self.ev_manager) self.swap_counter = 0 self.level = 0 #Create gui #--------------------------------------- self.create_gui() #Create initial board #--------------------------------------- self.new_board = self.deck.deal_new_board(self.board) self.ev_manager.post(NewBoardComplete(self.new_board)) def set_continent(self, continent_const): #Set continent based on const if continent_const == config.EUROPE: return continents.Europe() if continent_const == config.AFRICA: return continents.Africa() else: raise Exception('Continent constant not recognized') #Create pgu gui elements def create_gui(self): #Setup #--------------------------------------- self.gui_form = gui.Form() self.gui_app = gui.App(config.gui_theme) self.ev_manager.gui_app = self.gui_app c = gui.Container(align=-1,valign=-1) #Timer Progress bar #--------------------------------------- self.timer_bar = None self.time_increase = None self.minutes_left = None self.seconds_left = None self.timer_text = None if self.game_mode == config.TIME_CHALLENGE: self.time_increase = config.time_challenge_start_time self.timer_bar = gui.ProgressBar(config.time_challenge_start_time,0,config.max_time_bank,width=306) c.add(self.timer_bar, 172, 57) #Connections Progress bar #--------------------------------------- self.connections_bar = None self.connections_bar = gui.ProgressBar(0,0,config.longest_trip_needed,width=306) c.add(self.connections_bar, 172, 83) #Quit Button #--------------------------------------- b = QuitButton(ev_manager=self.ev_manager) c.add(b, 950, 20) #Generate Board Button #--------------------------------------- b = GenerateBoardButton(ev_manager=self.ev_manager, room=self) c.add(b, 500, 20) #Board Size? #--------------------------------------- bs = SetBoardSizeContainer(config.BOARD_LARGE, ev_manager=self.ev_manager, board=self.board) c.add(bs, 640, 20) #Fill Board? #--------------------------------------- t = FillBoardCheckbox(config.fill_board, ev_manager=self.ev_manager) c.add(t, 740, 20) #Darkness? #--------------------------------------- t = UseDarknessCheckbox(config.use_darkness, ev_manager=self.ev_manager) c.add(t, 840, 20) #Initialize #--------------------------------------- self.gui_app.init(c) def advance_level(self): self.level += 1 print 'Advancing to next level' print 'New level: ' + str(self.level) if self.timer_bar: print 'Time increase: ' + str(self.time_increase) self.timer_bar.value += self.time_increase self.time_increase = max(config.min_advance_time, int(self.time_increase * 0.9)) self.board = self.new_board self.new_board = None self.zoom_trip_complete = None self.game_clock.unpause() def notify(self, event): #Tick event if isinstance(event, TickEvent): pygame.display.set_caption('FPS: ' + str(int(event.fps))) self.render(self.screen) pygame.display.update() #Wait to deal new board when advancing levels if self.zoom_trip_complete and self.zoom_trip_complete.finished: self.zoom_trip_complete = None self.ev_manager.post(UnfreezeCards()) self.new_board = self.deck.deal_new_board(self.board) self.ev_manager.post(NewBoardComplete(self.new_board)) #New high score? if self.zoom_game_over and self.zoom_game_over.finished and not self.highs_dialog: if config.current_highs.check(self.level) != None: self.zoom_game_over.visible = False data = 'time:' + str(self.game_clock.time) + ',swaps:' + str(self.swap_counter) self.highs_dialog = HighScoreDialog(score=self.level, data=data, ev_manager=self.ev_manager) self.highs_dialog.open() elif not self.fade_out: self.fade_out = FadeOut(self.ev_manager, config.TITLE_SCREEN) #Second event elif isinstance(event, SecondEvent): if self.timer_bar: if not self.game_clock.paused: self.timer_bar.value -= 1 if self.timer_bar.value <= 0 and not self.game_over: self.ev_manager.post(GameOver()) self.minutes_left = self.timer_bar.value / 60 self.seconds_left = self.timer_bar.value % 60 if self.seconds_left < 10: leading_zero = '0' else: leading_zero = '' self.timer_text = ''.join(['Time Left: ', str(self.minutes_left), ':', leading_zero, str(self.seconds_left)]) #Game over elif isinstance(event, GameOver): self.game_over = True self.zoom_game_over = ZoomImage(self.ev_manager, self.game_over_text) #Trip complete event elif isinstance(event, TripComplete): print 'You did it!' self.game_clock.pause() self.zoom_trip_complete = ZoomImage(self.ev_manager, self.trip_complete_text) self.new_board_timer = Timer(self.ev_manager, 2) self.ev_manager.post(FreezeCards()) print 'Room posted newboardcomplete' #Board Refresh Complete elif isinstance(event, BoardRefreshComplete): if event.board == self.board: print 'Longest trip needed: ' + str(config.longest_trip_needed) print 'Your longest trip: ' + str(self.board.longest_trip) if self.board.longest_trip >= config.longest_trip_needed: self.ev_manager.post(TripComplete()) elif event.board == self.new_board: self.advance_level() self.connections_bar.value = self.board.longest_trip self.connection_text = ' '.join(['Connections:', str(self.board.longest_trip), '/', str(config.longest_trip_needed)]) #CardSwapComplete elif isinstance(event, CardSwapComplete): self.swap_counter += 1 elif isinstance(event, ConfigChangeBoardSize): config.board_size = event.new_size elif isinstance(event, ConfigChangeCardSize): config.card_size = event.new_size elif isinstance(event, ConfigChangeFillBoard): config.fill_board = event.new_value elif isinstance(event, ConfigChangeDarkness): config.use_darkness = event.new_value def render(self, surface): #Background surface.blit(self.background, (0, 0)) #Map self.map.render(surface) #Board self.board.render(surface) #Logo surface.blit(self.logo, (10,10)) #Text connection_text = self.font.render(self.connection_text, True, BLACK) surface.blit(connection_text, (25, 84)) if self.timer_text: timer_text = self.font.render(self.timer_text, True, BLACK) surface.blit(timer_text, (25, 64)) #GUI self.gui_app.paint(surface) if self.zoom_trip_complete: self.zoom_trip_complete.render(surface) if self.zoom_game_over: self.zoom_game_over.render(surface) if self.fade_out: self.fade_out.render(surface) class HighScoresRoom(Room): def __init__(self, screen, ev_manager): Room.__init__(self, screen, ev_manager) self.background = pygame.image.load('assets/images/interface/background.jpg').convert() #Initialize #--------------------------------------- self.gui_app = gui.App(config.gui_theme) self.ev_manager.gui_app = self.gui_app c = gui.Container(align=0,valign=0) #High Scores Table #--------------------------------------- hst = HighScoresTable() c.add(hst, 0, 0) self.gui_app.init(c) def render(self, surface): surface.blit(self.background, (0, 0)) #GUI self.gui_app.paint(surface) game_components.py #Remote imports import pygame from pygame.locals import * import random import operator from copy import copy from math import sqrt, floor #Local imports import config from events import * from matrix import Matrix from textrect import render_textrect, TextRectException from hyphen import hyphenator from textwrap2 import TextWrapper ############################## #CONSTANTS ############################## SCREEN_MARGIN = (10, 10) #Colors BLACK = (0, 0, 0) WHITE = (255, 255, 255) RED = (255, 0, 0) YELLOW = (255, 200, 0) #Directions LEFT = -1 RIGHT = 1 UP = 2 DOWN = -2 #Cards CARD_MARGIN = (10, 10) CARD_PADDING = (2, 2) #Card types BLANK = 0 COUNTRY = 1 TRANSPORT = 2 #Transport types PLANE = 0 TRAIN = 1 CAR = 2 SHIP = 3 class Timer(object): def __init__(self, ev_manager, time_left): self.ev_manager = ev_manager self.ev_manager.register_listener(self) self.time_left = time_left self.paused = False def __repr__(self): return str(self.time_left) def pause(self): self.paused = True def unpause(self): self.paused = False def notify(self, event): #Pause Event if isinstance(event, Pause): self.pause() #Unpause Event elif isinstance(event, Unpause): self.unpause() #Second Event elif isinstance(event, SecondEvent): if not self.paused: self.time_left -= 1 class Chrono(object): def __init__(self, ev_manager, start_time=0): self.ev_manager = ev_manager self.ev_manager.register_listener(self) self.time = start_time self.paused = False def __repr__(self): return str(self.time_left) def pause(self): self.paused = True def unpause(self): self.paused = False def notify(self, event): #Pause Event if isinstance(event, Pause): self.pause() #Unpause Event elif isinstance(event, Unpause): self.unpause() #Second Event elif isinstance(event, SecondEvent): if not self.paused: self.time += 1 class Map(object): def __init__(self, continent): self.map_image = pygame.image.load(continent.map).convert_alpha() self.map_text = pygame.image.load(continent.map_text).convert_alpha() self.pos = (0, 0) self.set_color() self.map_image = pygame.transform.smoothscale(self.map_image, config.map_size) self.size = self.map_image.get_size() def set_pos(self, pos): self.pos = pos def set_color(self): image_pixel_array = pygame.PixelArray(self.map_image) image_pixel_array.replace(config.GRAY1, config.COLOR1) image_pixel_array.replace(config.GRAY2, config.COLOR2) image_pixel_array.replace(config.GRAY3, config.COLOR3) image_pixel_array.replace(config.GRAY4, config.COLOR4) image_pixel_array.replace(config.GRAY5, config.COLOR5)

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• jQuery hover menu not disappearing

  - by Nathan Loding

  I have a basic menu using some nested UL's, which is pretty standard I think. When hovering over an LI from the "root" menu, I want the UL within that LI to display. Move the mouse off or to another LI, it shows that submenu. Move down to the submenu and it stays while you hover over each element. I had it working with a simple jQuery.hover() set, but then I ran into issues. When on a page, the "root" menu item is given a class of 'current-page' and if that class exists, I want it to display that submenu statically after a mouseout. Hope I explained that well enough. I just tossed a variable into the hover functions so on the mouseout it ran a .show() on the current-page's submenu. Easy. Except that when I move the mouse between the individual LI's of the submenu, it changes back to the current-page submenu. So I attempted to add a timer element based on another question here. That made things worse -- now the submenus just don't disappear. Here's my CSS, markup, and JS ... how the heck do I make this work properly? Markup: <div id="menu"> <div id="navbar"> <ul id="firstmenu"> <li> <a href="http://localhost/site/pageone">page one</a> <ul class="submenu"> <li><a href="http://localhost/site/pageone/subone">subone</a></li> <li><a href="http://localhost/site/pageone/subtwo">subtwo</a></li> <li><a href="http://localhost/site/pageone/subthree">subthree</a></li> <li><a href="http://localhost/site/pageone/subfour">subfour</a></li> <li><a href="http://localhost/site/pageone/subfive">subfive</a></li> </ul> </li> <li> <a href="http://localhost/site/pagetwo">barely there</a> <ul class="submenu"> <li><a href="http://localhost/site/pageone/subone">subone</a></li> <li><a href="http://localhost/site/pageone/subtwo">subtwo</a></li> <li><a href="http://localhost/site/pageone/subthree">subthree</a></li> <li><a href="http://localhost/site/pageone/subfour">subfour</a></li> <li><a href="http://localhost/site/pageone/subfive">subfive</a></li> </ul> </li> <li class="current-page"> <a href="http://localhost/site/pagetwo">kith & kin</a> <ul class="submenu"> <li><a href="http://localhost/site/pageone/subone">subone</a></li> <li><a href="http://localhost/site/pageone/subtwo">subtwo</a></li> <li><a href="http://localhost/site/pageone/subthree">subthree</a></li> <li><a href="http://localhost/site/pageone/subfour">subfour</a></li> <li><a href="http://localhost/site/pageone/subfive">subfive</a></li> </ul> </li> <li> <a href="http://localhost/site/pagethree">focal point</a> <ul class="submenu"> <li><a href="http://localhost/site/pageone/subone">subone</a></li> <li><a href="http://localhost/site/pageone/subtwo">subtwo</a></li> <li><a href="http://localhost/site/pageone/subthree">subthree</a></li> <li><a href="http://localhost/site/pageone/subfour">subfour</a></li> <li><a href="http://localhost/site/pageone/subfive">subfive</a></li> </ul> </li> <li> <a href="http://localhost/site/pagefour">products</a> <ul class="submenu"> <li><a href="http://localhost/site/pageone/subone">subone</a></li> <li><a href="http://localhost/site/pageone/subtwo">subtwo</a></li> <li><a href="http://localhost/site/pageone/subthree">subthree</a></li> <li><a href="http://localhost/site/pageone/subfour">subfour</a></li> <li><a href="http://localhost/site/pageone/subfive">subfive</a></li> </ul> </li> <li> <a href="http://localhost/site/pagefive">clients</a> </li> </ul> </div></div> And here's the CSS: #navbar { margin: 0; padding: 0; border: 0; text-align: center; } #firstmenu { margin: 6px auto 0 auto; font-size: 16px; list-style-type: none; letter-spacing: -1px; } #firstmenu li { display: inline; position:relative; overflow: hidden; text-align: center; margin-right: 10px; padding: 5px 15px; } #firstmenu a { text-decoration: none; outline: none; color: black; font-weight: 700; width: 75px; cursor: pointer; } .current-page { color: white; background: url(../images/down_arrow.png) bottom center no-repeat; } .current-page a { color: white; border-bottom: 1px solid black; } #firstmenu .current-page a { color: white; } #firstmenu li.hover { color: white; background: url(../images/down_arrow.png) bottom center no-repeat; } #firstmenu li.hover a { color: white; border-bottom: 1px solid black; } #firstmenu li ul li.hover { color: white; background: none; } #firstmenu li ul li.hover a { color: white; border-bottom: none; text-decoration: underline; } #firstmenu li ul { width: 900px; color: white; font-size: .8em; margin-top: 3px; padding: 5px; position: absolute; display: none; } #firstmenu li ul li { list-style: none; display: inline; width: auto; } #firstmenu li ul li a { color: white; font-weight: normal; border: none; } .sub-current-page { font-weight: bold; text-decoration: underline; } #firstmenu li ul li.sub-current-page a { font-weight: bold; } And lastly, my not-at-all-working JS (this is in a $(document).ready(), of course): // Initialize some variables var hideSubmenuTimer = null; var current_page; $('.current-page ul:first').show(); // Prep the menu $('#firstmenu li').hover(function() { // Clear the timeout if it exists if(hideSubmenuTimer) { clearTimeout(hideSubmenuTimer); } // Check if there's a current-page class set if($('li.current-page').length > 0) { current_page = $('li.current-page'); } else { current_page = false; } // If there's a current-page class, hide it if(current_page) { current_page.children('ul:first').hide(); } // Show the new submenu $(this).addClass('hover').children('ul:first').show(); }, function(){ // Just in case var self = this; // Clear the timeout if it exists if(hideSubmenuTimer) { clearTimeout(hideSubmenuTimer); } // Check if there's a current-page class set if($('li.current-page').length > 0) { current_page = $('li.current-page'); } else { current_page = false; } // Set a timeout on hiding the submenu hideSubmenuTimer = setTimeout(function() { // Hide the old submenu $(self).removeClass('hover').children('ul').hide(); // If there's a current-page class, show it if(current_page) { current_page.children('ul:first').show(); current_page.css('color', 'white'); } }, 500); }); So what am I doing so wrong? As a side note, I'm using the $('.current-page ul:first').show() because if I gave .current-page any "display" setting in the CSS, it positioned it really weirdly on the page.

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• Problem with my whiteboard application

  - by swift

  I have to develop a whiteboard application in which both the local user and the remote user should be able to draw simultaneously, is this possible? If possible then any logic? I have already developed a code but in which i am not able to do this, when the remote user starts drawing the shape which i am drawing is being replaced by his shape and co-ordinates. This problem is only when both draw simultaneously. any idea guys? Here is my code class Paper extends JPanel implements MouseListener,MouseMotionListener,ActionListener { static BufferedImage image; int bpressed; Color color; Point start; Point end; Point mp; Button elipse=new Button("elipse"); Button rectangle=new Button("rect"); Button line=new Button("line"); Button empty=new Button(""); JButton save=new JButton("Save"); JButton erase=new JButton("Erase"); String selected; int ex,ey;//eraser DatagramSocket dataSocket; JButton button = new JButton("test"); Client client; Point p=new Point(); int w,h; public Paper(DatagramSocket dataSocket) { this.dataSocket=dataSocket; client=new Client(dataSocket); System.out.println("paper"); setBackground(Color.white); addMouseListener(this); addMouseMotionListener(this); color = Color.black; setBorder(BorderFactory.createLineBorder(Color.black)); //save.setPreferredSize(new Dimension(100,20)); save.setMaximumSize(new Dimension(75,27)); erase.setMaximumSize(new Dimension(75,27)); } public void paintComponent(Graphics g) { try { g.drawImage(image, 0, 0, this); Graphics2D g2 = (Graphics2D)g; g2.setPaint(Color.black); if(selected==("elipse")) g2.drawOval(start.x, start.y,(end.x-start.x),(end.y-start.y)); else if(selected==("rect")) g2.drawRect(start.x, start.y, (end.x-start.x),(end.y-start.y)); else if(selected==("line")) g2.drawLine(start.x,start.y,end.x,end.y); } catch(Exception e) {} } //Function to draw the shape on image public void draw() { Graphics2D g2 = image.createGraphics(); g2.setPaint(color); if(selected=="line") g2.drawLine(start.x, start.y, end.x, end.y); if(selected=="elipse") g2.drawOval(start.x, start.y, (end.x-start.x),(end.y-start.y)); if(selected=="rect") g2.drawRect(start.x, start.y, (end.x-start.x),(end.y-start.y)); repaint(); g2.dispose(); start=null; } //To add the point to the board which is broadcasted by the server public synchronized void addPoint(Point ps,String varname,String shape,String event) { try { if(end==null) end = new Point(); if(start==null) start = new Point(); if(shape.equals("elipse")) selected="elipse"; else if(shape.equals("line")) selected="line"; else if(shape.equals("rect")) selected="rect"; else if(shape.equals("erase")) { selected="erase"; erase(); } if(end!=null && start!=null) { if(varname.equals("end")) end=ps; if(varname.equals("mp")) mp=ps; if(varname.equals("start")) start=ps; if(event.equals("drag")) repaint(); else if(event.equals("release")) draw(); } } catch(Exception e) { e.printStackTrace(); } } //To set the size of the image public void setWidth(int x,int y) { System.out.println("("+x+","+y+")"); w=x; h=y; image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB); Graphics2D g2 = image.createGraphics(); g2.setPaint(Color.white); g2.fillRect(0,0,w,h); g2.dispose(); } //Function which provides the erase functionality public void erase() { Graphics2D pic=(Graphics2D) image.getGraphics(); pic.setPaint(Color.white); pic.fillRect(start.x, start.y, 10, 10); } //Function to add buttons into the panel, calling this function returns a panel public JPanel addButtons() { JPanel buttonpanel=new JPanel(); JPanel row1=new JPanel(); JPanel row2=new JPanel(); JPanel row3=new JPanel(); JPanel row4=new JPanel(); buttonpanel.setPreferredSize(new Dimension(80,80)); //buttonpanel.setMinimumSize(new Dimension(150,150)); row1.setLayout(new BoxLayout(row1,BoxLayout.X_AXIS)); row1.setPreferredSize(new Dimension(150,150)); row2.setLayout(new BoxLayout(row2,BoxLayout.X_AXIS)); row3.setLayout(new BoxLayout(row3,BoxLayout.X_AXIS)); row4.setLayout(new BoxLayout(row4,BoxLayout.X_AXIS)); buttonpanel.setLayout(new BoxLayout(buttonpanel,BoxLayout.Y_AXIS)); elipse.addActionListener(this); rectangle.addActionListener(this); line.addActionListener( this); save.addActionListener( this); erase.addActionListener( this); buttonpanel.add(Box.createRigidArea(new Dimension(10,10))); row1.add(elipse); row1.add(Box.createRigidArea(new Dimension(5,0))); row1.add(rectangle); buttonpanel.add(row1); buttonpanel.add(Box.createRigidArea(new Dimension(10,10))); row2.add(line); row2.add(Box.createRigidArea(new Dimension(5,0))); row2.add(empty); buttonpanel.add(row2); buttonpanel.add(Box.createRigidArea(new Dimension(10,10))); row3.add(save); buttonpanel.add(row3); buttonpanel.add(Box.createRigidArea(new Dimension(10,10))); row4.add(erase); buttonpanel.add(row4); return buttonpanel; } //To save the image drawn public void save() { try { ByteArrayOutputStream bos = new ByteArrayOutputStream(); JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(bos); JFileChooser fc = new JFileChooser(); fc.showSaveDialog(this); encoder.encode(image); byte[] jpgData = bos.toByteArray(); FileOutputStream fos = new FileOutputStream(fc.getSelectedFile()+".jpeg"); fos.write(jpgData); fos.close(); //add replce confirmation here } catch (IOException e) { System.out.println(e); } } public void mouseClicked(MouseEvent arg0) { // TODO Auto-generated method stub } @Override public void mouseEntered(MouseEvent arg0) { } public void mouseExited(MouseEvent arg0) { // TODO Auto-generated method stub } public void mousePressed(MouseEvent e) { if(selected=="line"||selected=="erase") { start=e.getPoint(); client.broadcast(start,"start", selected,"press"); } else if(selected=="elipse"||selected=="rect") { mp = e.getPoint(); client.broadcast(mp,"mp", selected,"press"); } } public void mouseReleased(MouseEvent e) { if(start!=null) { if(selected=="line") { end=e.getPoint(); client.broadcast(end,"end", selected,"release"); } else if(selected=="elipse"||selected=="rect") { end.x = Math.max(mp.x,e.getX()); end.y = Math.max(mp.y,e.getY()); client.broadcast(end,"end", selected,"release"); } draw(); } //start=null; } public void mouseDragged(MouseEvent e) { if(end==null) end = new Point(); if(start==null) start = new Point(); if(selected=="line") { end=e.getPoint(); client.broadcast(end,"end", selected,"drag"); } else if(selected=="erase") { start=e.getPoint(); erase(); client.broadcast(start,"start", selected,"drag"); } else if(selected=="elipse"||selected=="rect") { start.x = Math.min(mp.x,e.getX()); start.y = Math.min(mp.y,e.getY()); end.x = Math.max(mp.x,e.getX()); end.y = Math.max(mp.y,e.getY()); client.broadcast(start,"start", selected,"drag"); client.broadcast(end,"end", selected,"drag"); } repaint(); } @Override public void mouseMoved(MouseEvent arg0) { // TODO Auto-generated method stub } public void actionPerformed(ActionEvent e) { if(e.getSource()==elipse) selected="elipse"; if(e.getSource()==line) selected="line"; if(e.getSource()==rectangle) selected="rect"; if(e.getSource()==save) save(); if(e.getSource()==erase) { selected="erase"; erase(); } } } class Button extends JButton { String name; public Button(String name) { this.name=name; Dimension buttonSize = new Dimension(35,35); setMaximumSize(buttonSize); } public void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2 = (Graphics2D)g; g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); //g2.setStroke(new BasicStroke(1.2f)); if (name == "line") g.drawLine(5,5,30,30); if (name == "elipse") g.drawOval(5,7,25,20); if (name== "rect") g.drawRect(5,5,25,23); } }

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• WordPress contact form email as PDF

  - by lock

  I am using the below code for my WordPress site which is emailing all the form details as an HTML text but I need the details to be written into a PDF first and then have to email the PDF as an attachment. How can I achieve this? This is not a PHP code to use PHP's writePDF modules. So, any idea or any code to implement this? <div style="padding-left: 100px;"> [raw] [contact-form subject="Best Aussie Broker" to="[email protected]"] <div id="main34" style="border: 1px solid black; border-radius: 15px; width: 720px; padding: 15px;"> &nbsp; <h2><span style="color: #ff6600;">Express Application</span></h2> &nbsp; [contact-field label="First Name" type="name" required="true" /] [contact-field label="Last Name" type="text" /] [contact-field label="Email" type="email" required="true" /] [contact-field label="Purpose of Finance?" type="select" options="Home Loan,Refinance,Investment Loan,Debt Consolidation,Other" /] [contact-field label="Your deposit amount" type="text" /] [contact-field label="Amount you need to borrow?" type="text" /] [contact-field label="Brief description of the purpose for finance" type="textarea" required="true" /] <div><label></label> <input class="radio" type="radio" name="19" value="Single Application" onchange="showsingle();" /> <label class="radio">Single Application</label> <div class="clear-form"></div> <input class="radio" type="radio" name="19" value="Joint Application" onchange="showjoint();" /> <label class="radio">Joint Application</label> <div class="clear-form"></div> [contact-field label="Privacy Act" type="checkbox" required="true" /] I have read the Privacy Act 1988 (as Amended) and understand that by selecting the submit button I/we Authorize Best Aussie Broker to act on my/our behalf and manage personal information in relation to this application.<br> <a href="http://googleplex.com.au/pdf.pdf"><img src="http://googleplex.com.au/pdf.png" alt="" /> </a> </div> </div> <div id="single" style="display: none; width: 720px; border: 1px solid black; border-radius: 15px; padding: 15px; margin-top: 10px;"> <div style="padding-top: 10px; width: 720px; text-align: left;"> <h4><span style="color: #ff6600;">Last step then we will get all listed Australian vendors to fight it out for your best deal</span></h4> </div> <div> <label class="select" for="19-date-of-birth">Date of Birth</label> [contact-field label="Day" type="select" options="1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31" /] [contact-field label="Month" type="select" options="January,February,March,April,May,June,July,August,September,October,November,December" /] [contact-field label="Year" type="select" options="2000,1999,1998,1997,1996,1995,1994,1993,1992,1991,1990,1989,1988,1987,1986,1985,1984,1983,1982,1981,1980,1979,1978,197,1976,1975,1974,1973,1972,1971,1970,1969,1968,1967,1966,1965,1964,1963,1962,1961,1960,1959,1958,1957,1956,1955,1954,1953,1952,1951,1950,1949,1948,1947,1946,1945,1944,1943,1942,1941,1940,1939,1938,1937,1936,1935,1934,1933,1932,1931,1930,1929,1928,1927,1926,1925,1924,1923,1922,1921,1920, 1919,1918,1917,1916,1915,1914,1913,1912,1911,1910,1909" /] </div> [contact-field label="Address" type="text" /] [contact-field label="Suburb" type="text" /] [contact-field label="Postcode" type="text" /] <div> [contact-field label="State" type="select" options="VIC,NSW,QLD,SA,WA,TAS,NZ,Other" /] </div> [contact-field label="Best Contact" type="radio" options="Landline,Mobile" /] [contact-field label="Phone Number" type="text" /] [contact-field label="Marital Status" type="select" options="Married,Single,Other" /] [contact-field label="Residential Status" type="select" options="Renting, Home Owned, Home Mortgage, Board, Other" /] [contact-field label="Children/Dependents" type="select" options="0,1,2,3,4,5,6" /] <div></div> [contact-field label="Gross Yearly Income" type="text" /] [contact-field label="Current Employer" type="text" /] <div> <label class="select" for="19-year-of-empl">Time at this employer</label> [contact-field label="Year" type="select" options="0,1,2,3,4,5,6,7,8,9,10,More" /] [contact-field label="Month" type="select" options="0,1,2,3,4,5,6,7,8,9,10,11,12" /] </div> <div style="padding-right: 15px;"></div> </div> <div id="joint" style="display: none; width: 720px; border: 1px solid black; border-radius: 15px; padding: 15px; margin-top: 10px;"> <div style="padding-top: 10px; width: 720px; text-align: left;"> <h4><span style="color: #ff6600;">Last step then we will get all listed Australian vendors to fight it out for your best deal</span></h4> </div> <div style="float: left; width: 320px;"> <div> <label class="select" for="19-date-of-birth1">Date of Birth</label> [contact-field label="Day" type="select" options="1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31" /] [contact-field label="Month" type="select" options="January,February,March,April,May,June,July,August,September,October,November,December" /] [contact-field label="Year" type="select" options="2000,1999,1998,1997,1996,1995,1994,1993,1992,1991,1990,1989,1988,1987,1986,1985,1984,1983,1982,1981,1980,1979,1978,197,1976,1975,1974,1973,1972,1971,1970,1969,1968,1967,1966,1965,1964,1963,1962,1961,1960,1959,1958,1957,1956,1955,1954,1953,1952,1951,1950,1949,1948,1947,1946,1945,1944,1943,1942,1941,1940,1939,1938,1937,1936,1935,1934,1933,1932,1931,1930,1929,1928,1927,1926,1925,1924,1923,1922,1921,1920, 1919,1918,1917,1916,1915,1914,1913,1912,1911,1910,1909" /] </div> [contact-field label="Address" type="text" /] [contact-field label="Suburb" type="text" /] [contact-field label="Postcode" type="text" /] <div> [contact-field label="State" type="select" options="VIC,NSW,QLD,SA,WA,TAS,NZ,Other" /] </div> [contact-field label="Best Contact" type="radio" options="Landline,Mobile" /] [contact-field label="Phone Number" type="text" /] <div></div> <div></div> [contact-field label="Marital Status" type="select" options="Married,Single,Other" /] [contact-field label="Residential Status" type="select" options="Renting, Home Owned, Home Mortgage, Board, Other" /] [contact-field label="Children/Dependents" type="select" options="0,1,2,3,4,5,6" /] <div></div> <div><label class="text" for="netincome">Net Income</label> <input id="netincome" type="text" name="netincome" /> <select id="netincome-dropdown" name="netincome-dropdown"> <option>Monthly</option> <option>Yearly</option> </select></div> [contact-field label="Current Employer" type="text" /] <div> <label class="select" for="19-year-of-empl2">Time at this employer</label> [contact-field label="Year" type="select" options="0,1,2,3,4,5,6,7,8,9,10,More" /] [contact-field label="Month" type="select" options="0,1,2,3,4,5,6,7,8,9,10,11,12" /] </div> </div> <div style="float: right; width: 320px; padding-right: 50px;"> <div> <label class="select" for="19-date-of-birth3">Date of Birth</label> [contact-field label="Day" type="select" options="1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31" /] [contact-field label="Month" type="select" options="January,February,March,April,May,June,July,August,September,October,November,December" /] [contact-field label="Year" type="select" options="2000,1999,1998,1997,1996,1995,1994,1993,1992,1991,1990,1989,1988,1987,1986,1985,1984,1983,1982,1981,1980,1979,1978,197,1976,1975,1974,1973,1972,1971,1970,1969,1968,1967,1966,1965,1964,1963,1962,1961,1960,1959,1958,1957,1956,1955,1954,1953,1952,1951,1950,1949,1948,1947,1946,1945,1944,1943,1942,1941,1940,1939,1938,1937,1936,1935,1934,1933,1932,1931,1930,1929,1928,1927,1926,1925,1924,1923,1922,1921,1920, 1919,1918,1917,1916,1915,1914,1913,1912,1911,1910,1909" /] </div> [contact-field label="Address" type="text" /] [contact-field label="Suburb" type="text" /] [contact-field label="Postcode" type="text" /] <div> [contact-field label="State" type="select" options="VIC,NSW,QLD,SA,WA,TAS,NZ,Other" /] </div> [contact-field label="Best Contact" type="radio" options="Landline,Mobile" /] [contact-field label="Phone Number" type="text" /] <div></div> <div></div> [contact-field label="Marital Status" type="select" options="Married,Single,Other" /] [contact-field label="Residential Status" type="select" options="Renting, Home Owned, Home Mortgage, Board, Other" /] [contact-field label="Children/Dependents" type="select" options="0,1,2,3,4,5,6" /] <div></div> <div><label class="text" for="netincome">Net Income</label> <input id="netincome" type="text" name="netincome" /> <select id="netincome-dropdown" name="netincome-dropdown"> <option>Monthly</option> <option>Yearly</option> </select></div> [contact-field label="Current Employer" type="text" /] <div> <label class="select" for="19-year-of-empl">Time at this employer</label> [contact-field label="Year" type="select" options="0,1,2,3,4,5,6,7,8,9,10,More" /] [contact-field label="Month" type="select" options="0,1,2,3,4,5,6,7,8,9,10,11,12" /] </div> </div> <div style="clear: both;"></div> <div></div> </div> &nbsp; [/contact-form][/raw] </div>

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• Prevent RDP logon brute force in mikrotik router via winbox

  - by holian

  Masters, I need help, how to config our router to block RDP brute force attacks I would like to set our router to only allow RDP connection from a specified country (our specified IP ranges), plus i need to set up router to block (take ips to black list) and drop brute force attepmst to specified port numbers. I try to set this with changeing the ftp port to rdp port. http://wiki.mikrotik.com/wiki/Bruteforce_login_prevention_%28FTP_%26_SSH Any suggestion tnx. H Current configuration: I try to configure the router via Winbox. I set some NAT rules (from dyndns to local address, rdp port) In the filter rules tab: I'm not sure this configuration should do the trick?! Is the content text "530 login incorrect" is fit for RDP connection to? Because in the tutorial used for filtering FTP connection. How to set router to allow RDP attempts from specified IP ranges? Thank you // New config

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• Smart Array P400 - Accelerator Replacement Battery Failure

  - by inflammable

  TL;DR - Is the immediate failure of a replacement battery, for a failed battery, on a battery backed accelerator for a Smart Array P400 controller a common occurrence? Or are we likely to have an storage controller with an impending and critical fault? We have a slightly confusing situation with a Smart Array P400 storage controller with the 512mb battery backed accelerator addon on an HP DL380 server. The storage controller is (afaik) running the latest firmware and driver: Model: Smart Array P400 Controller Status: OK Firmware Version: 7.24 Serial Number: *snip* Rebuild Priority: Medium Expand Priority: Medium Number Of Ports: 2 The storage diagnostic (both on the both boot-up screen for the controller and within the 'Management Homepage' and the 'HP Array Diagnostic Utility') recently starting showing the following status a fault for the battery for the accelerator: Accelerator Status: Temporarily Disabled Error Code: Cache Disabled Low Batteries Serial Number: *snip* Total Memory: 524288 KB Read Cache: 25% Write Cache: 75% Battery Status: Failed Read Errors: 0 Write Errors: 0 We replaced the battery with a new unit (a visual inspection of the P400 card showing nothing unusual) and saw the same fault - but expected this to disappear over the course of a few hours/days as it charged. This didn't happy, and the fault status remains the same as above. Given the battery is a genuine part from HP, I wouldn't have expected a replacement battery to fail straight away, or to be dead-on-arrival (is that naivety on my part?). Is the immediate failure of a replacement battery, for a failed battery, on a battery backed accelerator a common occurrence? Or are we likely to have an storage controller with an impending and critical fault? Is there any diagnostic that could tell me more about the failed battery, without cracking the server open again? Many thanks!

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• Backup Exec job completed with exceptions: RWS_AttachToDLE

  - by HannesFostie

  2 of this weekend's jobs completed with exceptions, and mention "RWS_AttachToDLE". I get the feeling the job did in fact complete without missing data, but I would like to be 100% sure (and can't verify the backup myself right now - colleague is out of the office and the backup in question is a bit of a black box for me, it works but I am not familiar with its inner workings). Also, how can I prevent this from happening? Google didn't prove to be very helpful, and experts exchange seem to have changed their system so that you can't simply scroll down to see the answers to a particular question ;-)

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• vCenter appliance won't use mail relay server

  - by Safado

  tl;dr: - sendmail is configured to use a relay server but still insists on using 127.0.01 as the relay, which results in mail not being sent. We have the open source vCenter appliance (v 5.0) managing our ESXi cluster. When connected to it via vSphere Client, you can configure the SMTP relay server to use by going to Administration > vCenter Server Settings > MAIL. There you can set the SMTP Server value. I looked through their documentation and also confirmed on the phone with support that all you have to do to configure mail is to put in the relay IP or fqdn in that box and hit OK. Well, I had done that and mail still wasn't sending. So I SSH into the server (which is SuSE) and look at /var/log/mail and it looks like it's trying to relay the email through 127.0.0.1 and it's rejecting it. So looking through the config files, I see there's /etc/sendmail.cf and /etc/mail/submit.cf. You can configure items in /etc/sysconfig/sendmail and run SuSEconfig --module sendmail to generate those to .cf files based on what's in /etc/sysconfig/sendmail. So playing around, I see that when you set the SMTP Server value in the vCenter gui, all that it does is change the "DS" line in /etc/mail/submit.cf to have DS[myrelayserver.com]. Looking on the internet, it would appear that the DS line is really the only thing you need to change in order to use a relay server. I got on the phone with VMWare support and spent 2 hours trying to modify ANY setting that had anything to do with relays and we couldn't get it to NOT use 127.0.0.1 as the relay. Just to note, any time we made any sort of configuration change, we restarted the sendmail service. Does anyone know whats going on? Have any ideas on how I can fix this?

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• Intel RST crashing! IAStorUI unstable in win 8.1

  - by user269549

  I have a Z87E-ITX Asrock mobo. Using a new 64G Corsair SSD as cache and a new Western Digi Black Scorpion 750G 2.5" drive. Using windows 8.1. Latest software or not, I can't open Intel RST software without it saying IAStorUI has stopped working. A problem caused the program to stop working correctly blah blah. I have had some issues recently with Robotic sounds causing fps drops etc but found it was the HDD. After a standard windows scan and fix (& update to win 8.1) I haven't been able to open Intel RST. I thought maybe I should try to look for an SSD cache drive checker but as it doesn't show up as a drive, I'm unsure how any program can scan it.

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• Sending emails from PHP - email providers vs GAE

  - by nrph

  I need to send emails from my social service (this is continuation of Experiences in mailing to registered users). I got strong feeling that it's better to avoid problems with email server configuration and maintance and to choose email provider which will take care of all painful problems. So several offers were compared: http://imgur.com/JkK2X.jpg Three of them look very attractive: Postageapp / Sendgrid / CritSend As alternative i'm considering setup GAE app. Email provider is quite easy to start work with, but have no idea how much effort require GAE to integrate with PHP. So my question is: which option is better to choose: email provider GAE ? Two factors are important here: business background (therefore prices are mentioned), work required to setup and maintain desired solution. Preferably i would love to avoid all email-related problems (like black lists and so on).

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• Can´t install OS from usb flash drive

  - by Bibo

  My previous problem was describe here: Can't boot OS from USB drive, showing black screen with blinking cursor and there are informations about my laptot. So please look there and then read rest here. I changed flash drive and it fix the problem but now when I boot to Ubuntu (or I tried Fedora, it do same) I can´t install system. I click on Install Ubuntu 10.10 I choose language, then on next window I click Forward but it just show waiting cursor and nothing happen (same Fedora). It doesn´t freeze so I can end install and I can take printscreen (when I was taking the screen, cursor was shown as waiting, not normal as in picture, it´s weird). Image where my installation ends I think there is some problem with Disk and Volumes and so. But I used chkdsk from W7 on boot and It said everything all right and I try utility in Ubuntu and check file system and it is all right too.Image with my Disk (Volumes and other things) I hope someone helps me. Thank you

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• Android - Custom Adapter Problem

  - by Ryan

  Hello, I seem to be having a problem with my Custom Adapter view. When I display the list, it only displays a white screen. Here is how it works: 1.) I send a JSON request 2.) populate the ArrayList with the returned results 3.) create a custom adapter 4.) then bind the adapter. Here is steps 2-4 private void updateUI() { ListView myList = (ListView) findViewById(android.R.id.list); itemList = new ArrayList(); Iterator it = data.entrySet().iterator(); while (it.hasNext()) { //Get the key name and value for it Map.Entry pair = (Map.Entry)it.next(); String keyName = (String) pair.getKey(); String value = pair.getValue().toString(); if (value != null) { ListItem li = new ListItem(keyName, value, false); itemList.add(li); } } CustomAdapter mAdapter = new CustomAdapter( mContext, itemList); myList.setAdapter(mAdapter); //Bind the adapter to the list //Tell the dialog it's cool now. dismissDialog(0); //Show next screen flipper.setInAnimation(inFromRightAnimation()); flipper.setOutAnimation(outToRightAnimation()); flipper.showNext(); } And here is my CustomAdapter class: import java.util.List; import android.R.color; import android.content.Context; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.RelativeLayout; import android.widget.TextView; class MyAdapterView extends RelativeLayout { public MyAdapterView(Context c, ListItem li) { super( c ); RelativeLayout rL = new RelativeLayout(c); RelativeLayout.LayoutParams containerParams = new RelativeLayout.LayoutParams( ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT); rL.setLayoutParams(containerParams); rL.setBackgroundColor(color.white); ImageView img = new ImageView (c); img.setImageResource(li.getImage()); img.setPadding(5, 5, 10, 5); rL.addView(img, 48, 48); TextView top = new TextView(c); top.setText(li.getTopText()); top.setTextColor(color.black); top.setTextSize(20); top.setPadding(0, 20, 0, 0); rL.addView(top,ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); TextView bot = new TextView( c ); bot.setText(li.getBottomText()); bot.setTextColor(color.black); bot.setTextSize(12); bot.setPadding(0, 0, 0, 10); bot.setAutoLinkMask(1); rL.addView(bot,ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); } } public class CustomAdapter extends BaseAdapter { private Context context; private List itemList; public CustomAdapter(Context c, List itemL ) { this.context = c; this.itemList = itemL; } public int getCount() { return itemList.size(); } public Object getItem(int position) { return itemList.get(position); } public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { ListItem li = itemList.get(position); return new MyAdapterView(this.context, li); } } Does anyone have any idea why this displays a white screen upon completion?? Thanks in advance!

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• Why does my ReadyNas 4200 have a constant beep post disk failure

  - by swagner88

  Went to check on a high pitched constant beep coming from the server room and discovered that all the LED lights on the disks were black except one which had a constant green. Post a Re-boot nothing changed. Console indicated that that particular drive has failed. Pulled the drive out and BAM everything is fine. Except, the high pitched beep remains. Plan is currently to replace the drive with a new same size drive we happen to have purchased for expansion. My question is, what will this do? Will the NAS accept the new drive as a replacement for the failed one and decide to shut-up? The Manual for the device is almost to straight forward and says that I can just swap drives out as I need but I find that difficult to believe: http://www.readynas.com/download/documentation/HM/RN4200_HW_24May10.pdf

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• Proliant ML350 Won't Load Windows

  - by Mike

  I have a HP Proliant ML350 G4 running Windows 2003 Server Std Edition that will not load Windows on boot. It gave me a BSOD while running a recent Windows update and has not been able to boot since. The BSOD was a generic error, "Hardware Fault. Contact vendor." I am not getting any errors when the machine boots--it just hangs with a black screen when Windows starts to load. The machine will not boot into safe mode either--it gets stuck after beginning to load drivers. When trying to load the Windows recovery console I get the message that Windows cannot find any hard disks on the machine. This, despite having to load the driver for my storage controller. The HP Smart Start diagnostics finds no problems with my hard disks nor anything else. What should I try next? Mainly, I just want to be able to pull the data off my hard disks.

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