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• In a Tower defense game, how to do buffs/debuffs

  - by Gabe

  The question is at the very bottom. If you understand Buffs/Debuffs in tower defense games then you should skip the bulk of this question and go to the bottom (seperated with the long line) I plan on making an IPhone TD game. The fact that its an iPhone game isn't relevant but I am coding in Objective-c with Cocos2D. I am relatively inexperienced in the field of game design so I'm looking for some advice from someone experienced in this field. In tower defense, there are two things that are relevant to my question: towers/enemies (both have their own classes/children). They each have stats like hp, damage, speed, etc. I want to add buffs/defuffs, for instance: Towers A,B and C each have 15 base damage. Tower D would be a buff tower with no damage, a tower with an AOE(area of effect) aura that gives 10% damage to all towers in range. Tower E might slow enemies in its AOE, a debuff. Stuff like that. The same could go for enemies. Enemy A is a boss that has a slow aura that affects towers and slows their base attack speed or something along those lines. So the question is, what would be the most effective way to implement this? If it was just towers then I would just mess around with the tower classes, but since tower classes and enemy classes are both affected, should I make a buff class? TD games can consume quite a bit of memory with large amounts of creeps and towers, and buffs I feel like would also consume quit a bit... So I'm trying to be as effective as possible.

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• how do applications (and OS) handle very big files?

  - by DrStrangeLove

  For instance, i have video file which is 11.8 Gb, but my RAM memory only 2 Gb.. How does VLC (or other software) handle it? How do they load it into memory? I used VMMap tool (from sysinternals) to take a look at memory, and i saw: private 160000K working set 100000K Obviously, it's much less than 11.8 Gb -So how did it happen? This question is not only about video. I'd like to know how computer, in general, handles very large files.

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• Ubuntu 10.04 not detecting multiple monitors

  - by user28837

  I have 2 graphics cards, the output from the lspci: 01:00.0 VGA compatible controller: ATI Technologies Inc RV770 [Radeon HD 4850] 02:00.0 VGA compatible controller: ATI Technologies Inc RV710 [Radeon HD 4350] I have one monitor connected to the 4850 and 2 connected to the 4350. However when I go into System Preferences Monitors the only monitor shown is the one connected to the 4850. Is there something I need to enable for it to be able to use the other card? How do I get this to work. Thanks. As per request: X.Org X Server 1.7.6 Release Date: 2010-03-17 X Protocol Version 11, Revision 0 Build Operating System: Linux 2.6.24-25-server i686 Ubuntu Current Operating System: Linux jeff-desktop 2.6.32-22-generic-pae #33-Ubuntu SMP Wed Apr 28 14:57:29 UTC 2010 i686 Kernel command line: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic-pae root=UUID=852e1013-4ed6-40fd-a462-c29087888383 ro quiet splash Build Date: 23 April 2010 05:11:50PM xorg-server 2:1.7.6-2ubuntu7 (Bryce Harrington <[email protected]>) Current version of pixman: 0.16.4 Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (==) Log file: "/var/log/Xorg.0.log", Time: Tue May 11 08:24:52 2010 (==) Using config file: "/etc/X11/xorg.conf" (==) Using config directory: "/usr/lib/X11/xorg.conf.d" (==) No Layout section. Using the first Screen section. (**) |-->Screen "Default Screen" (0) (**) | |-->Monitor "<default monitor>" (==) No device specified for screen "Default Screen". Using the first device section listed. (**) | |-->Device "Default Device" (==) No monitor specified for screen "Default Screen". Using a default monitor configuration. (==) Automatically adding devices (==) Automatically enabling devices (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist. Entry deleted from font path. (==) FontPath set to: /usr/share/fonts/X11/misc, /usr/share/fonts/X11/100dpi/:unscaled, /usr/share/fonts/X11/75dpi/:unscaled, /usr/share/fonts/X11/Type1, /usr/share/fonts/X11/100dpi, /usr/share/fonts/X11/75dpi, /var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType, built-ins (==) ModulePath set to "/usr/lib/xorg/extra-modules,/usr/lib/xorg/modules" (II) The server relies on udev to provide the list of input devices. If no devices become available, reconfigure udev or disable AutoAddDevices. (II) Loader magic: 0x81f0e80 (II) Module ABI versions: X.Org ANSI C Emulation: 0.4 X.Org Video Driver: 6.0 X.Org XInput driver : 7.0 X.Org Server Extension : 2.0 (++) using VT number 7 (--) PCI:*(0:1:0:0) 1002:9442:174b:e104 ATI Technologies Inc RV770 [Radeon HD 4850] rev 0, Mem @ 0xc0000000/268435456, 0xfe7e0000/65536, I/O @ 0x0000a000/256, BIOS @ 0x????????/131072 (--) PCI: (0:2:0:0) 1002:954f:1462:1618 ATI Technologies Inc RV710 [Radeon HD 4350] rev 0, Mem @ 0xd0000000/268435456, 0xfe8e0000/65536, I/O @ 0x0000b000/256, BIOS @ 0x????????/131072 (WW) Open ACPI failed (/var/run/acpid.socket) (No such file or directory) (II) "extmod" will be loaded by default. (II) "dbe" will be loaded by default. (II) "glx" will be loaded. This was enabled by default and also specified in the config file. (II) "record" will be loaded by default. (II) "dri" will be loaded by default. (II) "dri2" will be loaded by default. (II) LoadModule: "glx" (II) Loading /usr/lib/xorg/extra-modules/modules/extensions/libglx.so (II) Module glx: vendor="FireGL - ATI Technologies Inc." compiled for 7.5.0, module version = 1.0.0 (II) Loading extension GLX (II) LoadModule: "extmod" (II) Loading /usr/lib/xorg/modules/extensions/libextmod.so (II) Module extmod: vendor="X.Org Foundation" compiled for 1.7.6, module version = 1.0.0 Module class: X.Org Server Extension ABI class: X.Org Server Extension, version 2.0 (II) Loading extension MIT-SCREEN-SAVER (II) Loading extension XFree86-VidModeExtension (II) Loading extension XFree86-DGA (II) Loading extension DPMS (II) Loading extension XVideo (II) Loading extension XVideo-MotionCompensation (II) Loading extension X-Resource (II) LoadModule: "dbe" (II) Loading /usr/lib/xorg/modules/extensions/libdbe.so (II) Module dbe: vendor="X.Org Foundation" compiled for 1.7.6, module version = 1.0.0 Module class: X.Org Server Extension ABI class: X.Org Server Extension, version 2.0 (II) Loading extension DOUBLE-BUFFER (II) LoadModule: "record" (II) Loading /usr/lib/xorg/modules/extensions/librecord.so (II) Module record: vendor="X.Org Foundation" compiled for 1.7.6, module version = 1.13.0 Module class: X.Org Server Extension ABI class: X.Org Server Extension, version 2.0 (II) Loading extension RECORD (II) LoadModule: "dri" (II) Loading /usr/lib/xorg/modules/extensions/libdri.so (II) Module dri: vendor="X.Org Foundation" compiled for 1.7.6, module version = 1.0.0 ABI class: X.Org Server Extension, version 2.0 (II) Loading extension XFree86-DRI (II) LoadModule: "dri2" (II) Loading /usr/lib/xorg/modules/extensions/libdri2.so (II) Module dri2: vendor="X.Org Foundation" compiled for 1.7.6, module version = 1.1.0 ABI class: X.Org Server Extension, version 2.0 (II) Loading extension DRI2 (II) LoadModule: "fglrx" (II) Loading /usr/lib/xorg/extra-modules/modules/drivers/fglrx_drv.so (II) Module fglrx: vendor="FireGL - ATI Technologies Inc." compiled for 1.7.1, module version = 8.72.11 Module class: X.Org Video Driver (II) Loading sub module "fglrxdrm" (II) LoadModule: "fglrxdrm" (II) Loading /usr/lib/xorg/extra-modules/modules/linux/libfglrxdrm.so (II) Module fglrxdrm: vendor="FireGL - ATI Technologies Inc." compiled for 1.7.1, module version = 8.72.11 (II) ATI Proprietary Linux Driver Version Identifier:8.72.11 (II) ATI Proprietary Linux Driver Release Identifier: 8.723.1 (II) ATI Proprietary Linux Driver Build Date: Apr 8 2010 21:40:29 (II) Primary Device is: PCI 01@00:00:0 (WW) Falling back to old probe method for fglrx (II) Loading PCS database from /etc/ati/amdpcsdb (--) Assigning device section with no busID to primary device (WW) fglrx: No matching Device section for instance (BusID PCI:0@2:0:0) found (--) Chipset Supported AMD Graphics Processor (0x9442) found (WW) fglrx: No matching Device section for instance (BusID PCI:0@1:0:1) found (WW) fglrx: No matching Device section for instance (BusID PCI:0@2:0:1) found (**) ChipID override: 0x954F (**) Chipset Supported AMD Graphics Processor (0x954F) found (II) AMD Video driver is running on a device belonging to a group targeted for this release (II) AMD Video driver is signed (II) fglrx(0): pEnt->device->identifier=0x9428aa0 (II) pEnt->device->identifier=(nil) (II) fglrx(0): === [atiddxPreInit] === begin (II) Loading sub module "vgahw" (II) LoadModule: "vgahw" (II) Loading /usr/lib/xorg/modules/libvgahw.so (II) Module vgahw: vendor="X.Org Foundation" compiled for 1.7.6, module version = 0.1.0 ABI class: X.Org Video Driver, version 6.0 (II) fglrx(0): Creating default Display subsection in Screen section "Default Screen" for depth/fbbpp 24/32 (**) fglrx(0): Depth 24, (--) framebuffer bpp 32 (II) fglrx(0): Pixel depth = 24 bits stored in 4 bytes (32 bpp pixmaps) (==) fglrx(0): Default visual is TrueColor (==) fglrx(0): RGB weight 888 (II) fglrx(0): Using 8 bits per RGB (==) fglrx(0): Buffer Tiling is ON (II) Loading sub module "fglrxdrm" (II) LoadModule: "fglrxdrm" (II) Reloading /usr/lib/xorg/extra-modules/modules/linux/libfglrxdrm.so ukiDynamicMajor: found major device number 251 ukiDynamicMajor: found major device number 251 ukiOpenByBusid: Searching for BusID PCI:1:0:0 ukiOpenDevice: node name is /dev/ati/card0 ukiOpenDevice: open result is 10, (OK) ukiOpenByBusid: ukiOpenMinor returns 10 ukiOpenByBusid: ukiGetBusid reports PCI:2:0:0 ukiOpenDevice: node name is /dev/ati/card1 ukiOpenDevice: open result is 10, (OK) ukiOpenByBusid: ukiOpenMinor returns 10 ukiOpenByBusid: ukiGetBusid reports PCI:1:0:0 ukiDynamicMajor: found major device number 251 ukiDynamicMajor: found major device number 251 ukiOpenByBusid: Searching for BusID PCI:2:0:0 ukiOpenDevice: node name is /dev/ati/card0 ukiOpenDevice: open result is 11, (OK) ukiOpenByBusid: ukiOpenMinor returns 11 ukiOpenByBusid: ukiGetBusid reports PCI:2:0:0 (--) fglrx(0): Chipset: "ATI Radeon HD 4800 Series" (Chipset = 0x9442) (--) fglrx(0): (PciSubVendor = 0x174b, PciSubDevice = 0xe104) (==) fglrx(0): board vendor info: third party graphics adapter - NOT original ATI (--) fglrx(0): Linear framebuffer (phys) at 0xc0000000 (--) fglrx(0): MMIO registers at 0xfe7e0000 (--) fglrx(0): I/O port at 0x0000a000 (==) fglrx(0): ROM-BIOS at 0x000c0000 (II) fglrx(0): AC Adapter is used (II) fglrx(0): Primary V_BIOS segment is: 0xc000 (II) Loading sub module "vbe" (II) LoadModule: "vbe" (II) Loading /usr/lib/xorg/modules/libvbe.so (II) Module vbe: vendor="X.Org Foundation" compiled for 1.7.6, module version = 1.1.0 ABI class: X.Org Video Driver, version 6.0 (II) fglrx(0): VESA BIOS detected (II) fglrx(0): VESA VBE Version 3.0 (II) fglrx(0): VESA VBE Total Mem: 16384 kB (II) fglrx(0): VESA VBE OEM: ATI ATOMBIOS (II) fglrx(0): VESA VBE OEM Software Rev: 11.13 (II) fglrx(0): VESA VBE OEM Vendor: (C) 1988-2005, ATI Technologies Inc. (II) fglrx(0): VESA VBE OEM Product: RV770 (II) fglrx(0): VESA VBE OEM Product Rev: 01.00 (II) fglrx(0): ATI Video BIOS revision 9 or later detected (--) fglrx(0): Video RAM: 524288 kByte, Type: GDDR3 (II) fglrx(0): PCIE card detected (--) fglrx(0): Using per-process page tables (PPPT) as GART. (WW) fglrx(0): board is an unknown third party board, chipset is supported (--) fglrx(0): Chipset: "ATI Radeon HD 4300/4500 Series" (Chipset = 0x954f) (--) fglrx(0): (PciSubVendor = 0x1462, PciSubDevice = 0x1618) (==) fglrx(0): board vendor info: third party graphics adapter - NOT original ATI (--) fglrx(0): Linear framebuffer (phys) at 0xd0000000 (--) fglrx(0): MMIO registers at 0xfe8e0000 (--) fglrx(0): I/O port at 0x0000b000 (==) fglrx(0): ROM-BIOS at 0x000c0000 (II) fglrx(0): AC Adapter is used (II) fglrx(0): Invalid ATI BIOS from int10, the adapter is not VGA-enabled (II) fglrx(0): ATI Video BIOS revision 9 or later detected (--) fglrx(0): Video RAM: 524288 kByte, Type: DDR2 (II) fglrx(0): PCIE card detected (--) fglrx(0): Using per-process page tables (PPPT) as GART. (WW) fglrx(0): board is an unknown third party board, chipset is supported (II) fglrx(0): Using adapter: 1:0.0. (II) fglrx(0): [FB] MC range(MCFBBase = 0xf00000000, MCFBSize = 0x20000000) (II) fglrx(0): Interrupt handler installed at IRQ 31. (II) fglrx(0): Using adapter: 2:0.0. (II) fglrx(0): [FB] MC range(MCFBBase = 0xf00000000, MCFBSize = 0x20000000) (II) fglrx(0): RandR 1.2 support is enabled! (II) fglrx(0): RandR 1.2 rotation support is enabled! (==) fglrx(0): Center Mode is disabled (II) Loading sub module "fb" (II) LoadModule: "fb" (II) Loading /usr/lib/xorg/modules/libfb.so (II) Module fb: vendor="X.Org Foundation" compiled for 1.7.6, module version = 1.0.0 ABI class: X.Org ANSI C Emulation, version 0.4 (II) Loading sub module "ddc" (II) LoadModule: "ddc" (II) Module "ddc" already built-in (II) fglrx(0): Finished Initialize PPLIB! (II) Loading sub module "ddc" (II) LoadModule: "ddc" (II) Module "ddc" already built-in (II) fglrx(0): Connected Display0: DFP on external TMDS [tmds2] (II) fglrx(0): Display0 EDID data --------------------------- (II) fglrx(0): Manufacturer: DEL Model: a038 Serial#: 810829397 (II) fglrx(0): Year: 2008 Week: 51 (II) fglrx(0): EDID Version: 1.3 (II) fglrx(0): Digital Display Input (II) fglrx(0): Max Image Size [cm]: horiz.: 53 vert.: 30 (II) fglrx(0): Gamma: 2.20 (II) fglrx(0): DPMS capabilities: StandBy Suspend Off (II) fglrx(0): Supported color encodings: RGB 4:4:4 YCrCb 4:4:4 (II) fglrx(0): Default color space is primary color space (II) fglrx(0): First detailed timing is preferred mode (II) fglrx(0): redX: 0.640 redY: 0.330 greenX: 0.300 greenY: 0.600 (II) fglrx(0): blueX: 0.150 blueY: 0.060 whiteX: 0.312 whiteY: 0.329 (II) fglrx(0): Supported established timings: (II) fglrx(0): 720x400@70Hz (II) fglrx(0): 640x480@60Hz (II) fglrx(0): 640x480@75Hz (II) fglrx(0): 800x600@60Hz (II) fglrx(0): 800x600@75Hz (II) fglrx(0): 1024x768@60Hz (II) fglrx(0): 1024x768@75Hz (II) fglrx(0): 1280x1024@75Hz (II) fglrx(0): Manufacturer's mask: 0 (II) fglrx(0): Supported standard timings: (II) fglrx(0): #0: hsize: 1152 vsize 864 refresh: 75 vid: 20337 (II) fglrx(0): #1: hsize: 1280 vsize 1024 refresh: 60 vid: 32897 (II) fglrx(0): #2: hsize: 1920 vsize 1080 refresh: 60 vid: 49361 (II) fglrx(0): Supported detailed timing: (II) fglrx(0): clock: 148.5 MHz Image Size: 531 x 298 mm (II) fglrx(0): h_active: 1920 h_sync: 2008 h_sync_end 2052 h_blank_end 2200 h_border: 0 (II) fglrx(0): v_active: 1080 v_sync: 1084 v_sync_end 1089 v_blanking: 1125 v_border: 0 (II) fglrx(0): Serial No: Y183D8CF0TFU (II) fglrx(0): Monitor name: DELL S2409W (II) fglrx(0): Ranges: V min: 50 V max: 76 Hz, H min: 30 H max: 83 kHz, PixClock max 170 MHz (II) fglrx(0): EDID (in hex): (II) fglrx(0): 00ffffffffffff0010ac38a055465430 (II) fglrx(0): 3312010380351e78eeee91a3544c9926 (II) fglrx(0): 0f5054a54b00714f8180d1c001010101 (II) fglrx(0): 010101010101023a801871382d40582c (II) fglrx(0): 4500132a2100001e000000ff00593138 (II) fglrx(0): 3344384346305446550a000000fc0044 (II) fglrx(0): 454c4c205332343039570a20000000fd (II) fglrx(0): 00324c1e5311000a2020202020200059 (II) fglrx(0): End of Display0 EDID data -------------------- (II) fglrx(0): Output DFP2 has no monitor section (II) fglrx(0): Output DFP_EXTTMDS has no monitor section (II) fglrx(0): Output CRT1 has no monitor section (II) fglrx(0): Output CRT2 has no monitor section (II) fglrx(0): Output DFP2 disconnected (II) fglrx(0): Output DFP_EXTTMDS connected (II) fglrx(0): Output CRT1 disconnected (II) fglrx(0): Output CRT2 disconnected (II) fglrx(0): Using exact sizes for initial modes (II) fglrx(0): Output DFP_EXTTMDS using initial mode 1920x1080 (II) fglrx(0): DPI set to (96, 96) (II) fglrx(0): Adapter ATI Radeon HD 4800 Series has 2 configurable heads and 1 displays connected. (==) fglrx(0): QBS disabled (==) fglrx(0): PseudoColor visuals disabled (II) Loading sub module "ramdac" (II) LoadModule: "ramdac" (II) Module "ramdac" already built-in (==) fglrx(0): NoAccel = NO (==) fglrx(0): NoDRI = NO (==) fglrx(0): Capabilities: 0x00000000 (==) fglrx(0): CapabilitiesEx: 0x00000000 (==) fglrx(0): OpenGL ClientDriverName: "fglrx_dri.so" (==) fglrx(0): UseFastTLS=0 (==) fglrx(0): BlockSignalsOnLock=1 (--) Depth 24 pixmap format is 32 bpp (II) Loading extension ATIFGLRXDRI (II) fglrx(0): doing swlDriScreenInit (II) fglrx(0): swlDriScreenInit for fglrx driver ukiDynamicMajor: found major device number 251 ukiDynamicMajor: found major device number 251 ukiDynamicMajor: found major device number 251 ukiOpenByBusid: Searching for BusID PCI:1:0:0 ukiOpenDevice: node name is /dev/ati/card0 ukiOpenDevice: open result is 17, (OK) ukiOpenByBusid: ukiOpenMinor returns 17 ukiOpenByBusid: ukiGetBusid reports PCI:2:0:0 ukiOpenDevice: node name is /dev/ati/card1 ukiOpenDevice: open result is 17, (OK) ukiOpenByBusid: ukiOpenMinor returns 17 ukiOpenByBusid: ukiGetBusid reports PCI:1:0:0 (II) fglrx(0): [uki] DRM interface version 1.0 (II) fglrx(0): [uki] created "fglrx" driver at busid "PCI:1:0:0" (II) fglrx(0): [uki] added 8192 byte SAREA at 0x2000 (II) fglrx(0): [uki] mapped SAREA 0x2000 to 0xb6996000 (II) fglrx(0): [uki] framebuffer handle = 0x3000 (II) fglrx(0): [uki] added 1 reserved context for kernel (II) fglrx(0): swlDriScreenInit done (II) fglrx(0): Kernel Module Version Information: (II) fglrx(0): Name: fglrx (II) fglrx(0): Version: 8.72.11 (II) fglrx(0): Date: Apr 8 2010 (II) fglrx(0): Desc: ATI FireGL DRM kernel module (II) fglrx(0): Kernel Module version matches driver. (II) fglrx(0): Kernel Module Build Time Information: (II) fglrx(0): Build-Kernel UTS_RELEASE: 2.6.32-22-generic-pae (II) fglrx(0): Build-Kernel MODVERSIONS: yes (II) fglrx(0): Build-Kernel __SMP__: yes (II) fglrx(0): Build-Kernel PAGE_SIZE: 0x1000 (II) fglrx(0): [uki] register handle = 0x00004000 (II) fglrx(0): DRI initialization successfull! (II) fglrx(0): FBADPhys: 0xf00000000 FBMappedSize: 0x01068000 (II) fglrx(0): FBMM initialized for area (0,0)-(1920,2240) (II) fglrx(0): FBMM auto alloc for area (0,0)-(1920,1920) (front color buffer - assumption) (II) fglrx(0): Largest offscreen area available: 1920 x 320 (==) fglrx(0): Backing store disabled (II) Loading extension FGLRXEXTENSION (==) fglrx(0): DPMS enabled (II) fglrx(0): Initialized in-driver Xinerama extension (**) fglrx(0): Textured Video is enabled. (II) LoadModule: "glesx" (II) Loading /usr/lib/xorg/extra-modules/modules/glesx.so (II) Module glesx: vendor="X.Org Foundation" compiled for 1.7.1, module version = 1.0.0 (II) Loading extension GLESX (II) Loading sub module "xaa" (II) LoadModule: "xaa" (II) Loading /usr/lib/xorg/modules/libxaa.so (II) Module xaa: vendor="X.Org Foundation" compiled for 1.7.6, module version = 1.2.1 ABI class: X.Org Video Driver, version 6.0 (II) fglrx(0): GLESX enableFlags = 94 (II) fglrx(0): Using XFree86 Acceleration Architecture (XAA) Screen to screen bit blits Solid filled rectangles Solid Horizontal and Vertical Lines Driver provided ScreenToScreenBitBlt replacement Driver provided FillSolidRects replacement (II) fglrx(0): GLESX is enabled (II) LoadModule: "amdxmm" (II) Loading /usr/lib/xorg/extra-modules/modules/amdxmm.so (II) Module amdxmm: vendor="X.Org Foundation" compiled for 1.7.1, module version = 1.0.0 (II) Loading extension AMDXVOPL (II) fglrx(0): UVD2 feature is available (II) fglrx(0): Enable composite support successfully (II) fglrx(0): X context handle = 0x1 (II) fglrx(0): [DRI] installation complete (==) fglrx(0): Silken mouse enabled (==) fglrx(0): Using HW cursor of display infrastructure! (II) fglrx(0): Disabling in-server RandR and enabling in-driver RandR 1.2. (--) RandR disabled (II) Found 2 VGA devices: arbiter wrapping enabled (II) Initializing built-in extension Generic Event Extension (II) Initializing built-in extension SHAPE (II) Initializing built-in extension MIT-SHM (II) Initializing built-in extension XInputExtension (II) Initializing built-in extension XTEST (II) Initializing built-in extension BIG-REQUESTS (II) Initializing built-in extension SYNC (II) Initializing built-in extension XKEYBOARD (II) Initializing built-in extension XC-MISC (II) Initializing built-in extension SECURITY (II) Initializing built-in extension XINERAMA (II) Initializing built-in extension XFIXES (II) Initializing built-in extension RENDER (II) Initializing built-in extension RANDR (II) Initializing built-in extension COMPOSITE (II) Initializing built-in extension DAMAGE ukiDynamicMajor: found major device number 251 ukiDynamicMajor: found major device number 251 ukiOpenByBusid: Searching for BusID PCI:1:0:0 ukiOpenDevice: node name is /dev/ati/card0 ukiOpenDevice: open result is 18, (OK) ukiOpenByBusid: ukiOpenMinor returns 18 ukiOpenByBusid: ukiGetBusid reports PCI:2:0:0 ukiOpenDevice: node name is /dev/ati/card1 ukiOpenDevice: open result is 18, (OK) ukiOpenByBusid: ukiOpenMinor returns 18 ukiOpenByBusid: ukiGetBusid reports PCI:1:0:0 (II) AIGLX: Loaded and initialized /usr/lib/dri/fglrx_dri.so (II) GLX: Initialized DRI GL provider for screen 0 (II) fglrx(0): Enable the clock gating! (II) fglrx(0): Setting screen physical size to 507 x 285 (II) XKB: reuse xkmfile /var/lib/xkb/server-B20D7FC79C7F597315E3E501AEF10E0D866E8E92.xkm (II) config/udev: Adding input device Power Button (/dev/input/event1) (**) Power Button: Applying InputClass "evdev keyboard catchall" (II) LoadModule: "evdev" (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so (II) Module evdev: vendor="X.Org Foundation" compiled for 1.7.6, module version = 2.3.2 Module class: X.Org XInput Driver ABI class: X.Org XInput driver, version 7.0 (**) Power Button: always reports core events (**) Power Button: Device: "/dev/input/event1" (II) Power Button: Found keys (II) Power Button: Configuring as keyboard (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD) (**) Option "xkb_rules" "evdev" (**) Option "xkb_model" "pc105" (**) Option "xkb_layout" "us" (II) config/udev: Adding input device Power Button (/dev/input/event0) (**) Power Button: Applying InputClass "evdev keyboard catchall" (**) Power Button: always reports core events (**) Power Button: Device: "/dev/input/event0" (II) Power Button: Found keys (II) Power Button: Configuring as keyboard (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD) (**) Option "xkb_rules" "evdev" (**) Option "xkb_model" "pc105" (**) Option "xkb_layout" "us" (II) config/udev: Adding input device Logitech USB-PS/2 Optical Mouse (/dev/input/event3) (**) Logitech USB-PS/2 Optical Mouse: Applying InputClass "evdev pointer catchall" (**) Logitech USB-PS/2 Optical Mouse: always reports core events (**) Logitech USB-PS/2 Optical Mouse: Device: "/dev/input/event3" (II) Logitech USB-PS/2 Optical Mouse: Found 12 mouse buttons (II) Logitech USB-PS/2 Optical Mouse: Found scroll wheel(s) (II) Logitech USB-PS/2 Optical Mouse: Found relative axes (II) Logitech USB-PS/2 Optical Mouse: Found x and y relative axes (II) Logitech USB-PS/2 Optical Mouse: Configuring as mouse (**) Logitech USB-PS/2 Optical Mouse: YAxisMapping: buttons 4 and 5 (**) Logitech USB-PS/2 Optical Mouse: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200 (II) XINPUT: Adding extended input device "Logitech USB-PS/2 Optical Mouse" (type: MOUSE) (II) Logitech USB-PS/2 Optical Mouse: initialized for relative axes. (II) config/udev: Adding input device Logitech USB-PS/2 Optical Mouse (/dev/input/mouse1) (II) No input driver/identifier specified (ignoring) (II) config/udev: Adding input device Logitech USB Multimedia Keyboard (/dev/input/event4) (**) Logitech USB Multimedia Keyboard: Applying InputClass "evdev keyboard catchall" (**) Logitech USB Multimedia Keyboard: always reports core events (**) Logitech USB Multimedia Keyboard: Device: "/dev/input/event4" (II) Logitech USB Multimedia Keyboard: Found keys (II) Logitech USB Multimedia Keyboard: Configuring as keyboard (II) XINPUT: Adding extended input device "Logitech USB Multimedia Keyboard" (type: KEYBOARD) (**) Option "xkb_rules" "evdev" (**) Option "xkb_model" "pc105" (**) Option "xkb_layout" "us" (II) config/udev: Adding input device Logitech USB Multimedia Keyboard (/dev/input/event5) (**) Logitech USB Multimedia Keyboard: Applying InputClass "evdev keyboard catchall" (**) Logitech USB Multimedia Keyboard: always reports core events (**) Logitech USB Multimedia Keyboard: Device: "/dev/input/event5" (II) Logitech USB Multimedia Keyboard: Found keys (II) Logitech USB Multimedia Keyboard: Configuring as keyboard (II) XINPUT: Adding extended input device "Logitech USB Multimedia Keyboard" (type: KEYBOARD) (**) Option "xkb_rules" "evdev" (**) Option "xkb_model" "pc105" (**) Option "xkb_layout" "us" (II) config/udev: Adding input device KEYBOARD (/dev/input/event6) (**) KEYBOARD: Applying InputClass "evdev keyboard catchall" (**) KEYBOARD: always reports core events (**) KEYBOARD: Device: "/dev/input/event6" (II) KEYBOARD: Found keys (II) KEYBOARD: Configuring as keyboard (II) XINPUT: Adding extended input device "KEYBOARD" (type: KEYBOARD) (**) Option "xkb_rules" "evdev" (**) Option "xkb_model" "pc105" (**) Option "xkb_layout" "us" (II) config/udev: Adding input device KEYBOARD (/dev/input/event7) (**) KEYBOARD: Applying InputClass "evdev keyboard catchall" (**) KEYBOARD: always reports core events (**) KEYBOARD: Device: "/dev/input/event7" (II) KEYBOARD: Found 14 mouse buttons (II) KEYBOARD: Found scroll wheel(s) (II) KEYBOARD: Found relative axes (II) KEYBOARD: Found keys (II) KEYBOARD: Configuring as mouse (II) KEYBOARD: Configuring as keyboard (**) KEYBOARD: YAxisMapping: buttons 4 and 5 (**) KEYBOARD: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200 (II) XINPUT: Adding extended input device "KEYBOARD" (type: KEYBOARD) (**) Option "xkb_rules" "evdev" (**) Option "xkb_model" "pc105" (**) Option "xkb_layout" "us" (EE) KEYBOARD: failed to initialize for relative axes. (II) config/udev: Adding input device KEYBOARD (/dev/input/mouse2) (II) No input driver/identifier specified (ignoring) (II) config/udev: Adding input device Macintosh mouse button emulation (/dev/input/event2) (**) Macintosh mouse button emulation: Applying InputClass "evdev pointer catchall" (**) Macintosh mouse button emulation: always reports core events (**) Macintosh mouse button emulation: Device: "/dev/input/event2" (II) Macintosh mouse button emulation: Found 3 mouse buttons (II) Macintosh mouse button emulation: Found relative axes (II) Macintosh mouse button emulation: Found x and y relative axes (II) Macintosh mouse button emulation: Configuring as mouse (**) Macintosh mouse button emulation: YAxisMapping: buttons 4 and 5 (**) Macintosh mouse button emulation: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200 (II) XINPUT: Adding extended input device "Macintosh mouse button emulation" (type: MOUSE) (II) Macintosh mouse button emulation: initialized for relative axes. (II) config/udev: Adding input device Macintosh mouse button emulation (/dev/input/mouse0) (II) No input driver/identifier specified (ignoring) (II) fglrx(0): Restoring Recent Mode via PCS is not supported in RANDR 1.2 capable environments

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• Data Aggregation of CSV files java

  - by royB

  I have k csv files (5 csv files for example), each file has m fields which produce a key and n values. I need to produce a single csv file with aggregated data. I'm looking for the most efficient solution for this problem, speed mainly. I don't think by the way that we will have memory issues. Also I would like to know if hashing is really a good solution because we will have to use 64 bit hashing solution to reduce the chance for a collision to less than 1% (we are having around 30000000 rows per aggregation). For example file 1: f1,f2,f3,v1,v2,v3,v4 a1,b1,c1,50,60,70,80 a3,b2,c4,60,60,80,90 file 2: f1,f2,f3,v1,v2,v3,v4 a1,b1,c1,30,50,90,40 a3,b2,c4,30,70,50,90 result: f1,f2,f3,v1,v2,v3,v4 a1,b1,c1,80,110,160,120 a3,b2,c4,90,130,130,180 algorithm that we thought until now: hashing (using concurentHashTable) merge sorting the files DB: using mysql or hadoop or redis. The solution needs to be able to handle Huge amount of data (each file more than two million rows) a better example: file 1 country,city,peopleNum england,london,1000000 england,coventry,500000 file 2: country,city,peopleNum england,london,500000 england,coventry,500000 england,manchester,500000 merged file: country,city,peopleNum england,london,1500000 england,coventry,1000000 england,manchester,500000 The key is: country,city. This is just an example, my real key is of size 6 and the data columns are of size 8 - total of 14 columns. We would like that the solution will be the fastest in regard of data processing.

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• Why do programmers seem to be such bad spellers?

  - by Joel Etherton

  Programming languages are very precise tools based on explicit grammars. They're very picky, and when being used they require an exacting amount of detail. C#, for instance, is case sensitive so even getting the case of an argument wrong will cause an error. Questions asked all over the StackExchange are replete with misspellings, grammatical errors, and other problems that seem to indicate a lack of attention to detail when it comes to the language itself. Now, I understand there are a lot of programmers out there whose native language is not English, and I am not directing this question (rant one might say) at them. I'm referring to the individuals who are clearly from an English speaking background who refuse to pay attention to these simple details. I am not perfect by any means, but I try to use the language correctly so that my meaning will be understood correctly. I find programmers misspelling variable names, classes, and all manner of words in any kind of technical documentation they might write. I have had to withstand code where I am repeatedly referring to the subit[sic] button or HttpWebResponse reponse. The general complaint about bad spelling is one thing, and it will always be there. I accept that. But my question/comment is about the proclivity of bad spelling within the programming community. I would think that people who deal with such exacting tools to be more naturally predisposed towards proper spelling. Yet this doesn't seem to be the case.

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• How can I force Parallels' networking to obtain an IP through a wireless router?

  - by RLH

  Here is my setup. I have a Macbook, Thunderbolt display and an Ethernet connection plugged into the Thunderbolt display. During the day, most of my network use can (and should) operate across the ethernet associated with my display. However, I also need to be able to connect up to a wireless router. This hasn't been a problem on the Mac OS X side, but the program that I need to run on the router has to obtain an IP address from the wireless access point. Considering my current setup, how can I leave it so that I can access the internet in OS X, yet have my Window 7 instance running in Parallels, get it's assigned IP address from a wireless router that my Mac is also connected to? I've fiddled around with the Parallel's network settings for an hour, and I can't get Parallel's to see the router, even though my Mac is certainly connected to it.

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• SQL Server Performance & Latching

  - by Colin

  I have a SQL server 2000 instance which runs several concurrent select statements on a group of 4 or 5 tables. Often the performance of the server during these queries becomes extremely diminished. The querys can take up to 10x as long as other runs of the same query, and it gets to the point where simple operations like getting the table list in object explorer or running sp_who can take several minutes. I've done my best to identify the cause of these issues, and the only performance metric which I've found to be off base is Average Latch Wait time. I've read that over 1 second wait time is bad, and mine ranges anywhere from 20 to 75 seconds under heavy use. So my question is, what could be the issue? Shouldn't SQL be able to handle multiple selects on a single table without losing so much performance? Can anyone suggest somewhere to go from here to investigate this problem? Thanks for the help.

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• SQLAuthority News – Mark the Date: October 16, 2013 – Introducing NuoDB Blackbirds: THE Distributed Database

  - by Pinal Dave

  I am very excited to announce first on this blog about the release of NuoDB Blackbirds (NuoDB Release 2.0). NuoDB is my favorite application to work with data now a days. They are increasingly gaining market share as well as brining out new features with their every new release. I was very excited when I learned that NuoDB is releasing their flagship release of 2.0 on October 16, 2013. Interesting enough I will be in USA while this release happens and I will be watching it live during my day time. Even though if I had to stay up the entire night to just watch this release, I would do it. Here is the details of the announcements: Introducing NuoDB Blackbirds: THE Distributed Database Date: October 16, 2013 Time: 1:00 PM EDT Location: Online Registration Link What is the best DBMS architecture to handle today’s and tomorrow’s evolving needs? The days of shared disk are over. The times are “a-changin” and IT infrastructure has to change with them. Join NuoDB live for the introduction of our latest major product release, NuoDB Blackbirds, and take a look at why the NuoDB distributed database architecture is the only answer for customers like Fathom Voice, a leading provider of Voice Over IP (VoIP). NuoDB CEO, Barry Morris, welcomes Cameron Weeks, CEO of Fathom Voice to discuss how his company is using DBMS to break away from the pack and become the hottest player in VoIP. The webcast will include demonstrations of a single, logical database running in multiple geographies and a live Q&A. If due to any reason, you cannot watch it live, do not worry at all, just register at this Registration Link, as after the event you will get the link to watch the event on-demand. You can watch the launch event at any time if you have registered for the launch. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL Tagged: NuoDB

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• Product Update Bulletin: Oracle Solaris Cluster October 2013

  - by uwes

  Announcing new qualifications and general news for the Oracle Solaris Cluster product. Hardware Qualifications Sun Server X4-2 and X4-2L servers, Sun Blade X4-2B server module with Oracle Solaris Cluster 3.3 Sun Storage 16 Gb Fibre Channel ExpressModule Universal HBA, Emulex Oracle Dual Port QDR InfiniBand Adapter M3 Software Qualifications Oracle Database 12c Real Application Cluster with Oracle Solaris Cluster 4.1 Oracle Database 11.2.0.4 single instance and RAC with Oracle Solaris Cluster 4.1 Oracle VM server for SPARC 3.1 SAP Netweaver with new kernel versions ZFS Storage Appliance Kit version 2011.1.7.0 and 2013.1.0.0 Application monitoring in Oracle VM for SPARC failover guest domain Storage Partner Update Oracle Solaris Cluster 3.3 3/13 with the HDS Enterprise Storage arrays EMC SRDF for Oracle database 12c RAC in Oracle Solaris Cluster 4.1 geo cluster configuration Oracle Solaris Cluster References Korea Enterprise Data, HDFC Securities, Dealis Fund Operations Web Updates New blog entry: Oracle Solaris 10 Brand Zone cluster Solaris Application Engineering website now includes Oracle Solaris Cluster application support information Please read the Oracle Solaris Cluster Product Update Bulletin on Oracle HW TRC for more details. (If you are not registered on Oracle HW TRC, click here ... and follow the instructions..) _____________________________________________________________________ For More Information Go To:Oracle.com Oracle Solaris Cluster page Oracle Technology Network Oracle Solaris Cluster pageOracle Solaris Cluster mos communityPartner web Oracle Solaris Cluster pageOracle Solaris Cluster Blog Solaris.us.oracle.com page

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• IBM Bladecentre H Bootup

  - by Spence

  I have a bladecentre with blades, network and a SAN in a single rack. What I'd like to do is control the startup of the bladecentre so that when the rack is powered on that the blades will delay their bootup until the SAN is powered on correctly. Is this even possible? We have an AMM in the chassis if that helps. Basically we are looking into the reboot that occurs after power is restored to a UPS. I sincerely apologise for the noobness of this question, but I am a software guy trying to help :)

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• wireless access point

  - by Warren Bullock III

  I'm hoping to get some suggestions for possible Wireless Access point/router models which will allow us to have two separate networks. We run an internal network on 10.x.x.x IP range where we have shares and other network resources for which we would like to have our regular users access. However, we would also like to offer a separate wireless network for guests which ideally would be on 192.168.x.x and these users would not be able to see any of the resources sitting on the 10.x.x.x network. Anyone have any recommendations on single devices that might be able to get the job done? I was looking at the Linksys E4200 and it seems to support what I'm looking to do... any others? Thanks in advance for any suggestions.

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• SQL Server Interview Questions

  - by Rodney Vinyard

  User-Defined Functions Scalar User-Defined Function A Scalar user-defined function returns one of the scalar data types. Text, ntext, image and timestamp data types are not supported. These are the type of user-defined functions that most developers are used to in other programming languages. Table-Value User-Defined Function An Inline Table-Value user-defined function returns a table data type and is an exceptional alternative to a view as the user-defined function can pass parameters into a T-SQL select command and in essence provide us with a parameterized, non-updateable view of the underlying tables. Multi-statement Table-Value User-Defined Function A Multi-Statement Table-Value user-defined function returns a table and is also an exceptional alternative to a view as the function can support multiple T-SQL statements to build the final result where the view is limited to a single SELECT statement. Also, the ability to pass parameters into a T-SQL select command or a group of them gives us the capability to in essence create a parameterized, non-updateable view of the data in the underlying tables. Within the create function command you must define the table structure that is being returned. After creating this type of user-defined function, I can use it in the FROM clause of a T-SQL command unlike the behavior found when using a stored procedure which can also return record sets.

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• Is LINQ to objects a collection of combinators?

  - by Jimmy Hoffa

  I was just trying to explain the usefulness of combinators to a colleague and I told him LINQ to objects are like combinators as they exhibit the same value, the ability to combine small pieces to create a single large piece. Though I don't know that I can call LINQ to objects combinators. I've seen 2 levels of definition for combinator that I generalize as such: A combinator is a function which only uses things passed to it A combinator is a function which only uses things passed to it and other standard atomic functions but not state The first is very rigid and can be seen in the combinatory calculus systems and in haskell things like $ and . and various similar functions meet this rule. The second is less rigid and would allow something like sum as it uses the + function which was not passed in but is standard and not stateful. Though the LINQ extensions in C# use state in their iteration models, so I feel I can't say they're combinators. Can someone who understands the definition of a combinator more thoroughly and with more experience in these realms give a distinct ruling on this? Are my definitions of 'combinator' wrong to begin with?

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• DB2 on SPARC T3 Tuning Tips

  - by cherry.shu(at)oracle.com

  With the new self tuning feature in DB2 V9.x, a lot of database parameters are set to automatic in DB2 v9.7 by default so that DB2 can adjust the values as needed. Most should work fine without manual tweaks. But for transaction workload on SPARC T3 systems, two parameters need to be adjust manually to achieve optimal performance. DATABASE_MEMORY: When this parameter is set to AUTOMATIC and SELF_TUNING_MEM is set to ON, DB2 will allocate small page size (64KB) for all memory allocation, and expands and shrinks the memory as needed. In order to take advantage of the large page size (up to 256MB) supported by the SPARC T3, we need to manually set the size of the DATABASE_MEMORY so that DB2 can use 256MB page size for its buffer pools which are implemented as ISM segments. I know this sounds strange as it seems that you turn a switch and it ends up controlling another function. pmap(1M) output can verify the page sizes used by DB2 db2sysc process. NUM_IOCLEANERS: This parameter defines the number of page cleaners. The default value of this parameter is AUTOMATIC, which is calculated based on the number of available CPUs and the number of logical partitions. On a SPARC T3 system where there are over a hundred of virtual CPUs and single DB2 partition, DB2 would set it to #CPUs - 1. This would lead to too many page cleaners to compete flushing to disks and cause aio mutex lock contentions. So we need to decrease the value for it. The good practice is to set the value to the number of physical devices that are used by the database table space containers.

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• game multiplayer service development

  - by nomad

  I'm currently working on a multiplayer game. I've looked at a number of multiplayer services(player.io, playphone, gamespy, and others) but nothing really hits the mark. They are missing features, lack platform support or cost too much. What I'm looking for is a simple poor man's version of steam or xbox live. Not the game marketplace side of those two but the multiplayer services. User accounts, profiles, presence info, friends, game stats, invites, on/offline messaging. Basically I'm looking for a unified multiplayer platform for all my games across devices. Since I can't find what I'm planning to roll my own piece by piece. I plan to save on server resources by making most of the communication p2p. Things like game data and voice chat can be handled between peers and the server keeps track of user presence and only send updates when needed or requested. I know this runs the risk of cheating but that isn't a concern right now. I plan to run this on a Amazon ec2 micro server for development then move to a small to large instance when finished. I figure user accounts would be the simplest to start with. Users can create accounts online or using in game dialog, login/out, change profile info. The user can access this info online or in game. I will need user authentication and secure communication between server and client. I figure all info will be stored in a database but I dont know how it can be stored securely and accessed from webserver and game services. I would appreciate and links to tutorials, info or advice anyone could provide to get me started. Any programming language is fine but I plan to use c# on the server and c/c++ on devices. I would like to get started right away but I'm in no hurry to get it finished just yet. If you know of a service that already fits my requirements please let me know.

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• renaming hard drives (sdc to sdb) on the fly

  - by w00t

  ata2: link is slow to respond, please be patient (ready=0) kernel: [2761026.198796] ata2: soft resetting link kernel: [2761031.226669] ata2.00: disabled kernel: [2761031.226720] ata2: EH complete kernel: [2761031.226753] sd 1:0:0:0: [sdb] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK,SUGGEST_OK After receiving the error above, I couldn't access /dev/sdb anymore. Not wanting to restart the server, I rescanned for the device using echo "- - -" > /sys/class/scsi_host/host1/scan and it readded the drive as /dev/sdc. From what I have found, I need to use echo "scsi add-single-device 0 0 3 0" > /proc/scsi/scsi, "3" being the SCSI ID which corresponds to sdb. Everything nice up to the point I execute the command and get -bash: echo: write error: Invalid argument. All the solutions point to using this method, but I am unable to. Any other method available? Debian 5.0.8 - 2.6.26-1-686

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• Why do you hate Java? Is it the language or the framework? [closed]

  - by zneak

  According to you all, Java is the third most-hated language here. The two other most hated languages are PHP and VBScript. (It's quite funny how they stand together on the podium.) I'd like to make it known that the question mostly addresses people who don't like Java. I assume here a number of subjective opinions as facts because they're usually considered true among people who don't like Java, and I don't want to be convinced otherwise here. If you're a Java enthusiast, you might find this question frustrating. It's never been made clear if people hate Java itself, or if they hate it because of the framework, or if it's a mixture of the two. On a side you have the language, where you have: the "everything should be an object" philosophy, even in instances where it should obviously be something else (event handlers I'm pointing you); checked exceptions; the idea that all logic should be presented as methods and properties is a big no-no; the fact that "closures" created by anonymous types only include final variables and arguments, but will allow write access to any member of the parent class; a few more. On the other side, you have the JDK, with... its load of inconsistencies and overengineering; monolithic class hierarchies; meaningless base exceptions like IOException (though other frameworks have similar exception hierarchies); sluggish responsiveness even with Swing; a few more. My question is, do you think that, if either one (Java or the JDK) was taken alone, and the other was dropped in favor of something else, the new combination would be better? For instance, if you could use the C# syntax with the JDK (adapting get*/set* methods into properties, and interfaces with only one method into delegates), or the Java syntax with the .NET Framework (doing the inverse transformations), would things get better in your opinion?

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• Flash AS3 sidescrolling tiles optimization

  - by Galvanize

  I'm trying to make a sidescrolling game in Flash that will run on a low performance laptop. While studying the subject from Tonypa I saw that he builds a Bitmap by making copys of the BitmapData of each tile from the Tile Sheet and placing it on the bigger Bitmat with the size of the screen. But when I came to think on how to scroll my map I ran into some optimization doubts. I came up with two choices: Create a MovieClip, place a Bitmap instance for each tile that is shown on the screen + 1 row in it, then move them all. Then when the tile ran off the screen I would move it to end of the MovieClip and replace their BitmapData for the next row in my map. Use a Bitmap with copys of each tile in it (as shown in Tonypa's tutorial) but 1 extra row, move the whole Bitmap, and when it comes the time to replace rows, redraw the whole Bitmap and move it back to the origin position. The first idea is how a co-worker of mine suggested, the second one is my own, but none of us has enough technical knowledge to be sure on a technique that would be optimal in performance, can anyone help?

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• DAO/Webservice Consumption in Web Application

  - by Gavin

  I am currently working on converting a "legacy" web-based (Coldfusion) application from single data source (MSSQL database) to multi-tier OOP. In my current system there is a read/write database with all the usual stuff and additional "read-only" databases that are exported daily/hourly from an Enterprise Resource Planning (ERP) system by SSIS jobs with business product/item and manufacturing/SCM planning data. The reason I have the opportunity and need to convert to multi-tier OOP is a newer more modern ERP system is being implemented business wide that will be a complete replacement. This newer ERP system offers several interfaces for third party applications like mine, from direct SQL access to either a dotNet web-service or a SOAP-like web-service. I have found several suitable frameworks I would be happy to use (Coldspring, FW/1) but I am not sure what design patterns apply to my data access object/component and how to manage the connection/session tokens, with this background, my question has the following three parts: Firstly I have concerns with moving from the relative safety of a SSIS job that protects me from downtime and speed of the ERP system to directly connecting with one of the web services which I note seem significantly slower than I expected (simple/small requests often take up to a whole second). Are there any design patterns I can investigate/use to cache/protect my data tier? It is my understanding data access objects (the component that connects directly with the web services and convert them into the data types I can then work with in my Domain Objects) should be singletons (and will act as an Adapter/Facade), am I correct? As part of the data access object I have to setup a connection by username/password (I could set up multiple users and/or connect multiple times with this) which responds with a session token that needs to be provided on every subsequent request. Do I do this once and share it across the whole application, do I setup a new "connection" for every user of my application and keep the token in their session scope (might quickly hit licensing limits), do I set the "connection" up per page request, or is there a design pattern I am missing that can manage multiple "connections" where a requests/access uses the first free "connection"? It is worth noting if the ERP system dies I will need to reset/invalidate all the connections and start from scratch, and depending on which web-service I use might need manually close the "connection/session"

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• Project collision shapes to plane for 2.5D collision detection

  - by Jkh2

  I am working on a top down 2.5D game. In the game anything that overlaps on the screen should be 'colliding' with each other regardless of whether they are on the same plane in the 3D world. This is illustrated below from a side-ways view: The orange and green circles are spheres floating in the 3D world. They are projected onto a plane parallel to the viewport plane (y = 0 in the image) and if they overlap there is a collision event between them. These spheres are attached to other meshes to represent the sphere bounding boxes for collisions. The way I plan to implement this at the moment is the following: Get the 3D world position at the center of the sphere. Use Camera.WorldToViewportPoint to project the point to the viewport plane. Move a Sphere Collider with the radius of the sphere to that point. Test for collisions using unity colliders. My question is how to extend this to work for rotated cuboids. For instance if I have two rotated cuboids, if I follow the logic above it would not work as intended as the cuboids may not collide but they could still be intersected on the view plane. An example is below: Is there a way to project a cuboid that would be aligned with the plane? Would it be a valid cuboid for all rotations if I did this?

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• Are project managers useful in Scrum?

  - by Martin Wickman

  There are three roles defined in Scrum: Team, Product Owner and Scrum Master. There is no project manager, instead the project manager job is spread across the three roles. For instance: The Scrum Master: Responsible for the process. Removes impediments. The Product Owner: Manages and prioritizes the list of work to be done to maximize ROI. Represents all interested parties (customers, stakeholders). The Team: Self manage its work by estimating and distributing it among themselves. Responsible for meeting their own commitments. So in Scrum, there is no longer a single person responsible for project success. There is no command-and-control structure in place. That seems to baffle a lot of people, specifically those not used to agile methods, and of course, PM's. I'm really interested in this and what your experiences are, as I think this is one of the things that can make or break a Scrum implementation. Do you agree with Scrum that a project manager is not needed? Do you think such a role is still required? Why?

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• WoW lua: Getting quest attributes before the QUEST_DETAIL event

  - by Matt DiTrolio

  I'd like to determine the attributes of a quest (i.e., information provided by functions such as QuestIsDaily and IsQuestCompletable) before the player clicks on the quest detail. I'm trying to write an add-on that handles accepting and completing of daily quests with a single click on the NPC, but I'm running into a problem whereby I can't find out anything about a given quest unless the quest text is currently being displayed, defeating the purpose of the add-on. Other add-ons of this nature seem to be getting around this limitation by hard-coding information about quests, an approach I don't much like as it requires constant maintenance. It seems to me that this information must be available somehow, as the game itself can properly figure out which icon to display over the head of the NPC without player interaction. The only question is, are add-on authors allowed access to this information? If so, how? EDIT: What I originally left out was that the situations I'm trying to address are when: An NPC has multiple quests The quest detail is not the first thing that shows up upon right-click Otherwise, the situation is much simpler, as I have the information I need provided immediately.

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• SharePoint Web Part Constructor Fires Twice When Adding it to the Page (and has a different security

  - by Damon

  We had some exciting times debugging an interesting issue with SharePoint 2007 Web Parts.  We had some code in staging that had been running just fine for weeks and had not been touched or changed in about the same amount of time.  However, when we tried to move the web part into a different staging environment, the part started throwing a security exception when we tried to add it to a page.  After a bit of debugging, we determined that the web part was throwing the exception while trying to access the SPGroups property on the SharePoint site.  This was pretty strange because we were logged in as an admin and the code was working perfectly fine before.  During the debugging process, however, we found out that the web part constructor was being fired twice.  On one request, the security context did not seem to have everything it needed in order to run.  On the other request, the security context was populated with the user context with the user making the request (like it normally is).  Moving the security code outside of the constructor seems to have fixed the issue. Why the discrepancy between the two staging environments?  Turns out we deployed the part originally, then deployed an update with the security code.  Since the part was never "added" to the page after the code updates were made (we just deployed a new assembly to make the updates), we never saw the problem.  It seems as though the constructor fires twice when you are adding the web part to the page, and when you run the web part from the web part gallery.  My only thought on why this would occur is that SharePoint is instantiating an instance to get some information from it - which is odd because you would think that would happen with reflection without requiring a new object.  Anyway, the work around is to just not put anything security related inside the constructor, or to do a good job accounting for the possibility of the security context not being present if you are adding the item to the page. Technorati Tags: SharePoint,.NET,Microsoft,ASP.NET

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• SQL Server User Mapping - Limit view of databases for a user

  - by Jaime

  Hi there, I am adding a new Login with SQL Server Authentication. I set its Server Role as public and then went into User Mapping, selecting the only database this user should have access to. I then change the Default Schema to dbo and made this user the db_owner. I then connect to the instance using the new user's credentials and I can see not only the database he should have access to but all the other attached databases. How can I limit this user to just see the database he has access to? Thanks in advance!

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• The Internet of Things & Commerce: Part 3 -- Interview with Kristen J. Flanagan, Commerce Product Management

  - by Katrina Gosek, Director | Commerce Product Strategy-Oracle

  Internet of Things & Commerce Series: Part 3 (of 3) And now for the final installment my three part series on the Internet of Things & Commerce. Post one, “The Next 7,000 Days”, introduced the idea of the Internet of Things, followed by a second post interviewing one of our chief commerce innovation strategists, Brian Celenza.  This final post in the series is an interview with Kristen J. Flanagan, lead product manager for Oracle Commerce omnichannel strategy. She takes us through the past, present, and future of how our Commerce Solution is re-imagining the way physical and digital shopping come together. ------- QUESTION: It’s your job to stay on top of what our customers’ need to not only run their online businesses effectively, but also to make sure they have product capabilities they can innovate and grow on. What key trend has been top-of-mind for you and our customers around this collision of physical and digital shopping? Kristen: I’ll agree with Brian Celenza that hands down mobile has forced a major disruption in shopping and selling behavior. A few years ago, mobile exploded at a pace I don't think anyone was expecting. Early on, we saw our customers scrambling to establish a mobile presence---mostly through "screen scraping" technologies. As smartphones continued to advance (at lightening speed!), our customers started to investigate ways to truly tap in to their eCommerce capabilities to deliver the mobile experience. They started looking to us for a means of using the eCommerce services and capabilities to deliver a mobile experience that is tailored for mobile rather than the desktop experience on a smaller screen. In the future, I think we'll see customers starting to really understand what their shoppers need and expect from a mobile offering and how they can adapt their content and delivery of that content to meet those needs. And, mobile shopping doesn’t stop at the consumer / buyer. Because the in-store experience is compelling and has advantages that digital just can't offer, we're also starting to see the eCommerce services being leveraged for mobile for in-store sales associates. Brick-and-mortar retailers are interested in putting the omnichannel product catalog, promotions, and cart into the hands of knowledgeable associates. Retailers are now looking to connect and harness the eCommerce data in-store so that shoppers have a reason to walk-in. I think we'll be seeing a lot more customers thinking about melding the in-store and digital experiences to present a richer offering for shoppers.    QUESTION: What are some examples of what our customers are doing currently to bring these concepts to reality? Kristen: Well, without question, connecting digital and brick-and-mortar worlds is becoming tablestakes for selling experiences. If a brand has a foot in both worlds (i.e., isn’t a pureplay online retailer), they have to connect the dots because shoppers – whether consumers or B2B buyers –don't think in clearly defined channels anymore. The expectation is connectedness – for on- and offline experiences, promotions, products, and customer data. What does this mean practically for businesses selling goods on- and offline? It touches a lot of systems: inventory info on the eCommerce site, fulfillment options across channels (buy online/pickup in store), order information (representing various channels for a cohesive view of shopper order history), promotions across digital and store, etc.  A few years ago, the main link between store and digital was the smartphone. We all remember when “apps” became a thing and many of our customers were scrambling to get a native app out there. Now we're seeing more strategic thinking around the benefits of mobile web vs. native and how that ties in to the purpose and role of mobile within the digital channel. Put it more broadly, how these pieces fit together in the overall brand puzzle.  The same could be said for “showrooming.” Where it was a major concern (i.e., shoppers using stores to look at merchandise and then order online from Amazon), in recent months, it’s emerged that the inverse is now becoming a a reality as well. "Webrooming" (using digital sites to do research before making a purchase in the store) is a new behavior pure play retailers are challenged with. There are many technologies, behaviors, and information that need to tie together to offer a holistic omnichannel shopping experience. As a result, brands are looking for ways to connect the digital and in-store experiences to bridge the gaps: shared assortments across channels, assisted selling apps that arm associates with information about shoppers, shared promotions, inventory, etc. QUESTION: How has Oracle Commerce been built to help brands make the link between in-store and digital over the last few years? Kristen: Over the last seven years, the product has been in step with the changes in industry needs. Here is a brief history of the evolution: Prior to Oracle’s acquisition of ATG and Endeca, key investments were made to cross-channel functionality that we are still building on today. Commerce Service Center (v2007.1) ATG introduced the Commerce Service Center in 2007.1 and marked the first entry into what was then called “cross-channel.” The Commerce Service Center is a call-center-agent-facing application that enables agents to see shopper orders, online catalog, promotions, and pricing. It is tightly integrated with the eCommerce capabilities of the platform and commerce engine and provided a means of connecting data from the call center and online channels.  REST services framework (v9.1)  In v9.1 we introduced the REST services framework and interface in the Platform that enabled customers to use ATG web services in other applications. This framework has become the basis for our subsequent omni-channel features and functionality. Multisite Architecture (v10) With the v10 release, we introduced the Multisite Architecture, which enabled customers to manage multiple sites (and channels) within a single instance of the BCC. Customers could create site- and channel-specific catalogs, promotions, targeters, and scenarios. Endeca Page Builder (2.x) / Experience Manager (3.x) With the introduction of Endeca for Mobile (now part of the core platform, available through the reference store – see blow) on top of Page Builder (and then eventually Experience Manager), Endeca gave business users the tools to create and manage native and mobile web applications. And since the acquisition of both ATG (2011) and Endeca (2012), Oracle Commerce has leveraged the best of each leading technology’s capabilities for omnichannel commerce to continue to drive innovation for our customers. Service enablement of core Oracle Commerce capabilities (v10.1.1, 10.2, & 11) After the establishment of the REST services framework and interface, we followed up in subsequent releases with service enablement of core Oracle Commerce capabilities throughout the iOS native app and the enablement of the core Commerce Service Center features. The result is that customers can leverage these services for their integrations with other systems, as well as their omnichannel initiatives.  Mobile web reference application (v10.1) In 10.1 we introduced the shopper-facing mobile reference application that showed how to use Oracle Commerce to deliver a mobile web experience for shoppers. This included the use of Experience Manager and cartridges to drive those experiences on select pages.  Native (iOS) reference application (v10.1.1)  We came out with the 10.1.1 shopper-facing native iOS ref app that illustrated how to use the Commerce REST services to deliver an iOS app. Also included Experience Manager-driven pages.   Assisted Selling reference application (v10.2.1)  The Assisted Selling reference application is our first reference application designed for the in-store associate. This iOS app shows customers how they can use Oracle Commerce data and information to provide a high-touch, consultative sales environment as well as to put the endless aisle into hands of their associates. Shoppers can start a cart online, and in-store associates can access that cart via the application to provide more information or add products and then transact using the ATG engine. Support for Retail promotions (v11) As part of the v11 release, we worked with teams in the Oracle Retail Global Business Unit (RGBU) to assess which promotion types and capabilities are supported across our products. Those products included Oracle Commerce, Oracle Point of Service (ORPOS), and Oracle Retail Price Management (RPM). The result is that customers can now more easily support omnichannel use cases between the store and digital.  Making sure Oracle Commerce can help support the omnichannel needs of our customers is core to our product strategy. With 89% of consumers now use two or more channels to make a single purchase, ensuring that cross-channel interactions are linked is critical to a great customer experience – and to sales. As Oracle Commerce evolves, we want to make it simple for organizations to create, deliver, and scale experiences across touchpoints with our create once, deploy commerce anywhere framework. We have a flexible, services-oriented architecture that allows data, content, catalogs, cart, experiences, personalization, and merchandising to be shared across touchpoints and easily extended in to new environments like mobile, social, in-store, Call Center, and new Websites. [For the latest downloads and Oracle Commerce documentation, please visit the Oracle Technical Network.] ------ Thank you to both Brian and Kristen for their contributions and to this blog series and their continued thought leadership for Oracle Commerce. We are all looking forward to the coming years of months of new shopping behaviors and opportunities to innovate. Because – if the digital fabric of our everyday lives continues to change at the same pace – the next five years (that just under 2,000 days), will be dramatic. ---------- THIS DOCUMENT IS FOR INFORMATIONAL PURPOSES ONLY AND MAY NOT BE INCORPORATED INTO A CONTRACT OR AGREEMENT

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