plugin architecture - Page 149

Does Zend application server provide any sort of pushed-based messaging architecture support?

- by Alex

Does Zend application server provide any sort of pushed-based messaging architecture support?I mean some different message-oriented middlewares that can be used for the push-based architecture or email support?There is a need in provision of the non web-based interface for certain users of the website who would get regular messages notifying them of different special offers in their field of interest(it should be push-based)

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.NET Speech recognition plugin Runtime Error: Unhandled Exception. What could possibly cause it?

- by manuel

I'm writing a plugin (dll file) for speech recognition, and I'm creating a WinForm as its interface/dialog. When I run the plugin and click the 'Speak' to start the initialization, I get an unhandled exception. Here is a piece of the code: public ref class Dialog : public System::Windows::Forms::Form { public: SpeechRecognitionEngine^ sre; private: System::Void btnSpeak_Click(System::Object^ sender, System::EventArgs^ e) { Initialize(); } protected: void Initialize() { if (System::Threading::Thread::CurrentThread->GetApartmentState() != System::Threading::ApartmentState::STA) { throw gcnew InvalidOperationException("UI thread required"); } //create the recognition engine sre = gcnew SpeechRecognitionEngine(); //set our recognition engine to use the default audio device sre->SetInputToDefaultAudioDevice(); //create a new GrammarBuilder to specify which commands we want to use GrammarBuilder^ grammarBuilder = gcnew GrammarBuilder(); //append all the choices we want for commands. //we want to be able to move, stop, quit the game, and check for the cake. grammarBuilder->Append(gcnew Choices("play", "stop")); //create the Grammar from th GrammarBuilder Grammar^ customGrammar = gcnew Grammar(grammarBuilder); //unload any grammars from the recognition engine sre->UnloadAllGrammars(); //load our new Grammar sre->LoadGrammar(customGrammar); //add an event handler so we get events whenever the engine recognizes spoken commands sre->SpeechRecognized += gcnew EventHandler<SpeechRecognizedEventArgs^> (this, &Dialog::sre_SpeechRecognized); //set the recognition engine to keep running after recognizing a command. //if we had used RecognizeMode.Single, the engine would quite listening after //the first recognized command. sre->RecognizeAsync(RecognizeMode::Multiple); //this->init(); } void sre_SpeechRecognized(Object^ sender, SpeechRecognizedEventArgs^ e) { //simple check to see what the result of the recognition was if (e->Result->Text == "play") { MessageBox(plugin.hwndParent, L"play", 0, 0); } if (e->Result->Text == "stop") { MessageBox(plugin.hwndParent, L"stop", 0, 0); } } };

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How to have multiple instances of jQuery plugin on single page?

- by James Skidmore

I'm writing a simple jQuery plugin, but I'm having trouble being able to use multiple instances on a page. For instance, here is a sample plugin to illustrate my point: (function($) { $.fn.samplePlugin = function(options) { if (typeof foo != 'undefined') { alert('Already defined!'); } else { var foo = 'bar'; } }; })(jQuery); And then if I do this: $(document).ready(function(){ $('#myDiv').samplePlugin({}); // does nothing $('#myDiv2').samplePlugion({}); // alerts "Already defined!" }); This is obviously an over-simplified example to get across the point. So my question is, how do I have two separate instances of the plugin? I'd like to be able to use it across multiple instances on the same page. I'm guessing that part of the problem might be with defining the variables in a global scope. How can I define them unique to that instance of the plugin then? Thank you for your guidance!

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In Silverlight 3 how can I get the call to HtmlPage.Plugin.SetStyleAttribute() call to call other co

- by John Rennemeyer

I'm trying to take a snapshot of my Silverlight control using WriteableBitmap and it works fine, however, it only takes a snapshot of what is showing. I'm trying to resize the Silverlight control so it will show everything and then take a screenshot, however, the code doesn't resize the control until after the code after the call all runs which is the snapshot code... I can get this work using a timer to fire the snapshot after the other code has caused the resize but I'm wondering if there is a better way. The HtmlPage.Plugin.SetStyleAttribute call has to be called from the UI thread so I'm assuming that's where the problem is. The fact that it is being dispatched onto the UI thread while the rest of the code is not and so the other code is being run first. Is there anyway to create a new event or attach to the call to determine when it has been run to then fire off my snapshot code? I have the following code: private void btnTakeSnapshot_Click(object sender, System.Windows.RoutedEventArgs e) { if (CurrentContractAction != null) { string heightBefore = HtmlPage.Plugin.GetStyleAttribute("height"); HtmlPage.Plugin.SetStyleAttribute("height", string.Format("{0}px", "1800")); //this line doesn't change the height until after the "TakeSnapshot" code is run for some reason, I'm thinking it is because it is most likely dispatched to the UI thread :( and the following code is not run on the UI thread Snapshot snapshot = new Snapshot(string.Format("Action_Schedule_{0}", CurrentContractAction.Title), LayoutRoot, LayoutRoot, busyIndicatorDataGrid); snapshot.HideElements(btnViewGanttChart, btnSave, btnEditAction, btnFullScreen, btnTakeSnapshot, btnLockAndSubmit); snapshot.TakeSnapshot(); snapshot.ResetElementsVisibility(); HtmlPage.Plugin.SetStyleAttribute("height", string.Format("{0}px", heightBefore)); } } Thanks, John

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WhatsApp & Tasker for Android – Read & Write messages

- by Shaurya Anand

So, I finally gave up on all my previous the Microsoft Mobile/Phone OS devices and made my switch to Android this year. I am using my Samsung Galaxy Note GT-N7000 with CyanogenMod 9.1.0 (http://get.cm/get/jenkins/7086/cm-9.1.0-n7000.zip) and ClockworkMod 6.0.1.2 (http://download2.clockworkmod.com/recoveries/recovery-clockwork-6.0.1.2-n7000.zip) since August this year and I am so happy with the performance and the flexibility it offers me. As a software developer by profession, I would expect most of my gadget to be highly customizable and programmable (one time or at intervals) to suit my needs as close as it can. I was introduced to Automation for Android – Tasker (https://play.google.com/store/apps/details?id=net.dinglisch.android.taskerm&hl=en) via reddit (http://www.reddit.com/r/tasker) and the word ‘automation’ was enough for me to dive right into this app. Only automation that I did earlier was switching profiles depending on location on there phones. And now, just imagine a complete set of possibilities that can be automate on the phone or via the phone. I did my research and found a couple of other tools that do the same/as close as what Tasker can do and few of them are even free. There’s one even by Microsoft called on{X} (https://play.google.com/store/apps/details?id=com.microsoft.onx.app&hl=en). Microsoft’s on{X} really caught my eye. You can write code for your phone on the web application by them, deploy it on your phone and even trace the flow all using your PC. Really brilliant, I love the fact that it’s all JavaScript. Here comes the but, it is still very very young and it’s policy of accessing my News Feed on Facebook is not something that I can not digest. On{X} is good, but as I said earlier, the API is not very mature and hence, I gave up on it. I bought Tasker, the best 5,00 € I spent in ages and I want to talk about it in this post. I am still a “noob” while operating this tool, but I tried my shot at automating WhatsApp (https://play.google.com/store/apps/details?id=com.whatsapp&hl=en), a popular messenger for various platform. The requirement for the automation is that, if I send a WhatsApp ‘wru’ message to the phone, it should respond back giving the location and battery level of my phone. It could be useful, if you like to locate your misplaced phone or automatically reply to your partner/friend, honestly, I don’t know what you will use it - through this post, I am just introducing automating WhatsApp using Tasker. Before we begin, the following script only works when your phone is rooted as we will be accessing the WhatsApp database and type some special characters like ‘:’. Let’s follow the code line by line: Profile: Location request from XYZ. (12) // Name of your profile. Event: Notification [ Owner Application:WhatsApp Title:* ] // When a new notification comes from WhatsApp, this event is fired. Read the end note, if you face problems with Chrome app after enabling Tasker accessibility. Enter: A1: Run Shell [ Command:sqlite3 // We will access the WhatsApp database and check if the message comes from designated phone number or not. We mustn’t reply to every message. /data/data/com.whatsapp/databases/msgstore.db "SELECT _id, data FROM messages WHERE key_from_me='0' AND key_remote_jid LIKE '%XXXXXXXXXXX%' // Replace XXXXXXXXXXX with the phone number of your message sender. ORDER BY _id DESC LIMIT 1;" Timeout (Seconds):10 Use Root:On Store // I made a timeout for 10 seconds, if in case WhatsApp is busy accessing the database. Result In:%WHATSAPP_CURRREQ ] // Store the read Id and the last message on to the variable %WHATSAPP_CURRREQ A2: If [ %WHATSAPP_CURRREQ ~R .*[wW][rR][uU].* ] // Check if the pattern of the message is correct and we are all set to send the location. A3: If [ %WHATSAPP_CURRREQ !~ %WHATSAPP_LASTREQ ] // Verify that the message is different from the last request. Remember every message has a unique Id. A4: Notify [ Title:WhatsApp location request... Text:Sending location // Just a notification that the location message is being prepared. to Krati Gupta... Icon:<icon> Number:0 Permanent:On Priority:3 ] // Make a note it is a permanent notification, we will clear it later. A5: Secure Settings [ Configuration:Pattern Lock Disabled // I am disabling the pattern lock, that I use using the plugin Secure Settings. Package:com.intangibleobject.securesettings.plugin Name:Secure // You can download the plugin from here: https://play.google.com/store/apps/details?id=com.intangibleobject.securesettings.plugin&hl=en Settings ] A6: Secure Settings [ Configuration:Keyguard Disabled // Disable the keygaurd, it is useful, when your phone is on lock and you want to automate everything, even the typing. Package:com.intangibleobject.securesettings.plugin Name:Secure Settings ] A7: Secure Settings [ Configuration:GPS Enabled // Pretty clear, turn on the GPS and get location at A8 Package:com.intangibleobject.securesettings.plugin Name:Secure Settings ] A8: AutoShortcut [ Configuration:WhatsApp: Some One // I am using AutoShortcut plugin (https://play.google.com/store/apps/details?id=com.joaomgcd.autoshortcut) to start WhatsApp with the indented recipient. Package:com.joaomgcd.autoshortcut Name:AutoShortcut ] // Replace Some One, actually choose it from the plugin, the right recipient. A9: Get Location [ Source:Any Timeout (Seconds):30 Continue Task // I am getting the location, timeout is 30 seconds, adjust it accordingly. Immediately:Off Keep Tracking:Off ] A10: Secure Settings [ Configuration:Screen Dim // Now, this extension of the plugin Secure Settings, wakes your device so that you can type out the string on the WhatsApp app. 5 Seconds Package:com.intangibleobject.securesettings.plugin Name:Secure Settings ] A11: Run Shell [ Command:input text // Now, I am using the shell script to type the text to the window, because the ‘:’ while not be typed from the Type task in Tasker. LOCATION:maps.google.com/maps?q=%LOC Timeout (Seconds):0 Use Root:On // And also, this is way faster, but remember you need root for this, not for the other way of typing. Store Result In: ] A12: Dpad [ Button:Right Repeat Times:1 ] // Focus the Send button A13: Dpad [ Button:Press Repeat Times:1 ] // And press it. A14: Dpad [ Button:Left Repeat Times:1 ] // Get back to the typing box. A15: Run Shell [ Command:input text LOCATION_ACCURACY:%LOCACC Timeout (Seconds):0 Use Root:On Store Result In: ] A16: Dpad [ Button:Right Repeat Times:1 ] A17: Dpad [ Button:Press Repeat Times:1 ] A18: Dpad [ Button:Left Repeat Times:1 ] A19: Run Shell [ Command:input text BATTERY_LEVEL:%BATT% Timeout // I am adding Battery level in my case as well. (Seconds):0 Use Root:On Store Result In: ] A20: Dpad [ Button:Right Repeat Times:1 ] A21: Dpad [ Button:Press Repeat Times:1 ] A22: Variable Set [ Name:%WHATSAPP_LASTREQ To:%WHATSAPP_CURRREQ Do // And now, we say, request is done. Maths:Off Append:Off ] A23: Button [ Button:Back ] // I am exiting the WhatsApp nicely and not killing it. If you are the murderer kind, kill it, just know, you don’t have any place in the heaven. A24: Button [ Button:Back ] A25: Notify Cancel [ Title: Warn Not Exist:Off ] // Remove the permanent notification. A26: Notify [ Title:WhatsApp location request Text:Location sent // Make a temporary notification, and say, location is sent. successfully. Icon:<icon> Number:0 Permanent:Off Priority:3 ] A27: Secure Settings [ Configuration:GPS Disabled // Disable all the horrible things we turned on earlier. Package:com.intangibleobject.securesettings.plugin Name:Secure Settings ] A28: Secure Settings [ Configuration:Pattern Lock Enabled Package:com.intangibleobject.securesettings.plugin Name:Secure Settings ] A29: Secure Settings [ Configuration:Keyguard Enabled Package:com.intangibleobject.securesettings.plugin Name:Secure Settings ] A30: End If A31: End If Download this Task from here: http://db.tt/9vRmbhyb That’s it in the above small example – you can read/write messages from/to WhatsApp app. I am using n7000-cm9.1-cwr6. Oh yea, and if you are having the Talkback auto enabled for Chrome browser, you need to turn Off the Web scripts to run. Tasker is amazing, I have automated a lot of tasks using this tool. I will share a few none generic ones with you in my coming post here.

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How to configure TATA Photon+ EC1261 HUAWEI

- by user3215

I'm running ubuntu 10.04. I have a newly purchased TATA Photon+ Internet connection which supports Windows and Mac. On the Internet I found a article saying that it could be configured on Linux. I followed the steps to install it on Ubuntu from this link. I am still not able to get online, and need some help. Also, it is very slow, but I was told that I would see speeds up to 3.1MB. I dont have wvdial installed and cannot install it from apt as I'm not connected to internet Booting from windows I dowloaded "wvdial" .deb package and tried to install on ubuntu but it's ended with dependency problem. Automatically, don't know how, I got connected to internet only for once. Immediately I installed wvdial package after this I followed the tutorials(I could not browse and upload the files here) . From then it's showing that the device is connected in the network connections but no internet connection. Once I disable the device, it won't show as connected again and I'll have to restart my system. Sometimes the device itself not detected(wondering if there is any command to re-read the all devices). output of wvdialconf /etc/wvdial.cof: #wvdialconf /etc/wvdial.conf Editing `/etc/wvdial.conf'. Scanning your serial ports for a modem. ttyS0<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud ttyS0<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud ttyS0<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up. Modem Port Scan<*1>: S1 S2 S3 WvModem<*1>: Cannot get information for serial port. ttyUSB0<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud ttyUSB0<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 9600 baud ttyUSB0<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up. WvModem<*1>: Cannot get information for serial port. ttyUSB1<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud ttyUSB1<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 9600 baud ttyUSB1<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up. WvModem<*1>: Cannot get information for serial port. ttyUSB2<*1>: ATQ0 V1 E1 -- OK ttyUSB2<*1>: ATQ0 V1 E1 Z -- OK ttyUSB2<*1>: ATQ0 V1 E1 S0=0 -- OK ttyUSB2<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK ttyUSB2<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK ttyUSB2<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK ttyUSB2<*1>: Modem Identifier: ATI -- Manufacturer: +GMI: HUAWEI TECHNOLOGIES CO., LTD ttyUSB2<*1>: Speed 9600: AT -- OK ttyUSB2<*1>: Max speed is 9600; that should be safe. ttyUSB2<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK Found a modem on /dev/ttyUSB2. Modem configuration written to /etc/wvdial.conf. ttyUSB2<Info>: Speed 9600; init "ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0" output of wvdial: #wvdial --> WvDial: Internet dialer version 1.60 --> Cannot get information for serial port. --> Initializing modem. --> Sending: ATZ ATZ OK --> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 OK --> Sending: AT+CRM=1 AT+CRM=1 OK --> Modem initialized. --> Sending: ATDT#777 --> Waiting for carrier. ATDT#777 CONNECT --> Carrier detected. Starting PPP immediately. --> Starting pppd at Sat Oct 16 15:30:47 2010 --> Pid of pppd: 5681 --> Using interface ppp0 --> pppd: (u;[08]@s;[08]`{;[08] --> pppd: (u;[08]@s;[08]`{;[08] --> pppd: (u;[08]@s;[08]`{;[08] --> pppd: (u;[08]@s;[08]`{;[08] --> pppd: (u;[08]@s;[08]`{;[08] --> pppd: (u;[08]@s;[08]`{;[08] --> local IP address 14.96.147.104 --> pppd: (u;[08]@s;[08]`{;[08] --> remote IP address 172.29.161.223 --> pppd: (u;[08]@s;[08]`{;[08] --> primary DNS address 121.40.152.90 --> pppd: (u;[08]@s;[08]`{;[08] --> secondary DNS address 121.40.152.100 --> pppd: (u;[08]@s;[08]`{;[08] Output of log message /var/log/messages: Oct 16 15:29:44 avyakta-desktop pppd[5119]: secondary DNS address 121.242.190.180 Oct 16 15:29:58 desktop pppd[5119]: Terminating on signal 15 Oct 16 15:29:58 desktop pppd[5119]: Connect time 0.3 minutes. Oct 16 15:29:58 desktop pppd[5119]: Sent 0 bytes, received 177 bytes. Oct 16 15:29:58 desktop pppd[5119]: Connection terminated. Oct 16 15:30:47 desktop pppd[5681]: pppd 2.4.5 started by root, uid 0 Oct 16 15:30:47 desktop pppd[5681]: Using interface ppp0 Oct 16 15:30:47 desktop pppd[5681]: Connect: ppp0 <--> /dev/ttyUSB2 Oct 16 15:30:47 desktop pppd[5681]: CHAP authentication succeeded Oct 16 15:30:47 desktop pppd[5681]: CHAP authentication succeeded Oct 16 15:30:48 desktop pppd[5681]: local IP address 14.96.147.104 Oct 16 15:30:48 desktop pppd[5681]: remote IP address 172.29.161.223 Oct 16 15:30:48 desktop pppd[5681]: primary DNS address 121.40.152.90 Oct 16 15:30:48 desktop pppd[5681]: secondary DNS address 121.40.152.100 EDIT 1 : I tried the following sudo stop network-manager sudo killall modem-manager sudo /usr/sbin/modem-manager --debug > ~/mm.log 2>&1 & sudo /usr/sbin/NetworkManager --no-daemon > ~/nm.log 2>&1 & Output of mm.log: #vim ~/mm.log: ** Message: Loaded plugin Option High-Speed ** Message: Loaded plugin Option ** Message: Loaded plugin Huawei ** Message: Loaded plugin Longcheer ** Message: Loaded plugin AnyData ** Message: Loaded plugin ZTE ** Message: Loaded plugin Ericsson MBM ** Message: Loaded plugin Sierra ** Message: Loaded plugin Generic ** Message: Loaded plugin Gobi ** Message: Loaded plugin Novatel ** Message: Loaded plugin Nokia ** Message: Loaded plugin MotoC Output of nm.log: #vim ~/nm.log: NetworkManager: <info> starting... NetworkManager: <info> modem-manager is now available NetworkManager: SCPlugin-Ifupdown: init! NetworkManager: SCPlugin-Ifupdown: update_system_hostname NetworkManager: SCPluginIfupdown: guessed connection type (eth0) = 802-3-ethernet NetworkManager: SCPlugin-Ifupdown: update_connection_setting_from_if_block: name:eth0, type:802-3-ethernet, id:Ifupdown (eth0), uuid: 681b428f-beaf-8932-dce4-678ed5bae28e NetworkManager: SCPlugin-Ifupdown: addresses count: 1 NetworkManager: SCPlugin-Ifupdown: No dns-nameserver configured in /etc/network/interfaces NetworkManager: nm-ifupdown-connection.c.119 - invalid connection read from /etc/network/interfaces: (1) addresses NetworkManager: SCPluginIfupdown: management mode: unmanaged NetworkManager: SCPlugin-Ifupdown: devices added (path: /sys/devices/pci0000:00/0000:00:14.4/0000:02:02.0/net/eth1, iface: eth1) NetworkManager: SCPlugin-Ifupdown: device added (path: /sys/devices/pci0000:00/0000:00:14.4/0000:02:02.0/net/eth1, iface: eth1): no ifupdown configuration found. NetworkManager: SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/lo, iface: lo) @

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Connecting to ItsHidden in Ubuntu 9.10 problems

- by Ionel Bratianu

I try to setup a VPN connection to ItsHidden on Ubuntu 9.10. I double-checked my credentials in the VPN configuration, but I don't think that this is problem. In my syslog I got these messages: Jan 11 14:38:46 NetworkManager: Starting VPN service 'org.freedesktop.NetworkManager.pptp'... Jan 11 14:38:46 NetworkManager: VPN service 'org.freedesktop.NetworkManager.pptp' started (org.freedesktop.NetworkManager.pptp), PID 4502 Jan 11 14:38:46 NetworkManager: VPN service 'org.freedesktop.NetworkManager.pptp' just appeared, activating connections Jan 11 14:38:46 NetworkManager: VPN plugin state changed: 1 Jan 11 14:38:46 NetworkManager: VPN plugin state changed: 3 Jan 11 14:38:46 pppd[4506]: Plugin /usr/lib/pppd/2.4.5//nm-pptp-pppd-plugin.so loaded. Jan 11 14:38:46 NetworkManager: VPN connection 'ItsHidden' (Connect) reply received. Jan 11 14:38:46 pppd[4506]: pppd 2.4.5 started by root, uid 0 Jan 11 14:38:46 pppd[4506]: Using interface ppp0 Jan 11 14:38:46 NetworkManager: SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/ppp0, iface: ppp0) Jan 11 14:38:46 NetworkManager: SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration found. Jan 11 14:38:46 pppd[4506]: Connect: ppp0 /dev/pts/1 Jan 11 14:39:06 pptp[4508]: nm-pptp-service-4502 fatal[get_ip_address:pptp.c:430]: gethostbyname 'vpn.itshidden.com': HOST NOT FOUND Jan 11 14:39:06 pppd[4506]: Modem hangup Jan 11 14:39:06 pppd[4506]: Connection terminated. Jan 11 14:39:06 NetworkManager: VPN plugin failed: 1 Jan 11 14:39:06 NetworkManager: SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/ppp0, iface: ppp0) Jan 11 14:39:06 pppd[4506]: Exit. Jan 11 14:39:06 NetworkManager: VPN plugin failed: 1 Jan 11 14:39:06 NetworkManager: VPN plugin failed: 1 Jan 11 14:39:06 NetworkManager: VPN plugin state changed: 6 Jan 11 14:39:06 NetworkManager: VPN plugin state change reason: 0 Jan 11 14:39:06 NetworkManager: connection_state_changed(): Could not process the request because no VPN connection was active. Jan 11 14:39:06 NetworkManager: Policy set 'Auto eth0' (eth0) as default for routing and DNS. Jan 11 14:39:19 NetworkManager: [1263213559.003098] ensure_killed(): waiting for vpn service pid 4502 to exit Jan 11 14:39:19 NetworkManager: [1263213559.003289] ensure_killed(): vpn service pid 4502 cleaned up Because the gethostbyname is failing, I suppose that the NetworkManager doesn't know that I use proxies for accessing Internet. I'm not sure that this is the real problem. Could you tell me a solution to make gesthostbyname not failing anymore?

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Guest Blog: Secure your applications based on your business model, not your application architecture, by Yaldah Hakim

- by Darin Pendergraft

Today’s businesses are looking for new ways to engage their customers, embrace mobile applications, while staying in compliance, improving security and driving down costs. For many, the solution to that problem is to host their applications with a Cloud Services provider, but concerns that a hosted application will be less secure continue to cause doubt. Oracle is recognized by Gartner as a leader in the User Provisioning and Identity and Access Governance magic quadrants, and has helped thousands of companies worldwide to secure their enterprise applications and identities. Now those same world class IDM capabilities are available as a managed service, both for enterprise applications, as well has Oracle hosted applications. --- Listen to our IDM in the cloud podcast to hear Yvonne Wilson, Director of the IDM Practice in Cloud Service, explain how Oracle Managed Services provides IDM as a service ---Selecting OracleManaged Cloud Services to deploy and manage Oracle Identity Management Services is a smart business decision for a variety of reasons. Oracle hosted Identity Management infrastructure is deployed securely, resilient to failures, and supported by Oracle experts. In addition, Oracle Managed Cloud Services monitors customer solutions from several perspectives to ensure they continue to work smoothly over time. Customers gain the benefit of Oracle Identity Management expertise to achieve predictable and effective results for their organization.Customers can select Oracle to host and manage any number of Oracle IDM products as a service as well as other Oracle’s security products, providing a flexible, cost effective alternative to onsite hardware and software costs.Security is a major concern for all organizations- making it increasingly important to partner with a company like Oracle to ensure consistency and a layered approach to security and compliance when selecting a cloud provider. Oracle Cloud Service makes this possible for our customers by taking away the headache and complexity of managing Identity management infrastructure and other security solutions. For more information:http://www.oracle.com/us/solutions/cloud/managed-cloud-services/overview/index.htmlTwitter-https://twitter.com/OracleCloudZoneFacebook - http://www.facebook.com/OracleCloudComputing

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Architecture for Social Graph data that has a Time Frame Associated?

- by Jay Stevens

I am adding some "social" type features to an existing application. There are a limited # of node & edge types. Overall the data itself is relatively small (50,000 - 70,000 for each type of node) there will be a number of edges (relationships) between them (almost all directional). This, I know, is relatively easy to represent with an SDF store (such as BrightstarDB) or something like Microsoft's Trinity (or really many of the noSQL options). The thing that, I think, makes this a unique use case is that each relationship will have a timeframe associated with it (start and end dates). Right now, I'm thinking of just storing this in a relational structure and dealing with the headaches of "traversing the graph", but I'm looking for suggestions on a better approach (both in terms of data structure and server): Column ================ From_Node_ID Relationship To_Node_ID StartDate EndDate Any suggestions or thoughts are welcomed.

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Architecture Standards – BPMN vs. BPEL for Business Process Management

- by pat.shepherd

I get asked often which business process standard an organization should use; BPMN or BPEL? As I explain to folks, they both have strengths. Here is a great article that helps understand the benefits of both and where to use them. The good news is that, with Oracle SOA Suite and BPM suite, you have the option and flexibility to use both in the same SCA model and runtime container. Good stuff. Here is the great article that Mark Nelson wrote: The right tool for the right job BPEL and BPMN are both ‘languages’ or ‘notations’ for describing and executing business processes. Both are open standards. Most business process engines will support one or the other of these languages. Oracle however has chosen to support both and treat them as equals. This means that you have the freedom to choose which language to use on a process by process basis. And you can freely mix and match, even within a single composite. (A composite is the deployment unit in an SCA environment.) So why support both? Well it turns out that BPEL is really well suited to modeling some kinds of processes and BPMN is really well suited to modeling other kinds of processes. Of course there is a pretty significant overlap where either will do a great job What BPM adds to SOA Suite | RedStack

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Organization & Architecture UNISA Studies – Chap 6

- by MarkPearl

Learning Outcomes Discuss the physical characteristics of magnetic disks Describe how data is organized and accessed on a magnetic disk Discuss the parameters that play a role in the performance of magnetic disks Describe different optical memory devices Magnetic Disk The way data is stored on and retried from magnetic disks Data is recorded on and later retrieved form the disk via a conducting coil named the head (in many systems there are two heads) The writ mechanism exploits the fact that electricity flowing through a coil produces a magnetic field. Electric pulses are sent to the write head, and the resulting magnetic patterns are recorded on the surface below with different patterns for positive and negative currents The physical characteristics of a magnetic disk Summarize from book The factors that play a role in the performance of a disk Seek time – the time it takes to position the head at the track Rotational delay / latency – the time it takes for the beginning of the sector to reach the head Access time – the sum of the seek time and rotational delay Transfer time – the time it takes to transfer data RAID The rate of improvement in secondary storage performance has been considerably less than the rate for processors and main memory. Thus secondary storage has become a bit of a bottleneck. RAID works on the concept that if one disk can be pushed so far, additional gains in performance are to be had by using multiple parallel components. Points to note about RAID… RAID is a set of physical disk drives viewed by the operating system as a single logical drive Data is distributed across the physical drives of an array in a scheme known as striping Redundant disk capacity is used to store parity information, which guarantees data recoverability in case of a disk failure (not supported by RAID 0 or RAID 1) Interesting to note that the increase in the number of drives, increases the probability of failure. To compensate for this decreased reliability RAID makes use of stored parity information that enables the recovery of data lost due to a disk failure. The RAID scheme consists of 7 levels… Category Level Description Disks Required Data Availability Large I/O Data Transfer Capacity Small I/O Request Rate Striping 0 Non Redundant N Lower than single disk Very high Very high for both read and write Mirroring 1 Mirrored 2N Higher than RAID 2 – 5 but lower than RAID 6 Higher than single disk Up to twice that of a signle disk for read Parallel Access 2 Redundant via Hamming Code N + m Much higher than single disk Highest of all listed alternatives Approximately twice that of a single disk Parallel Access 3 Bit interleaved parity N + 1 Much higher than single disk Highest of all listed alternatives Approximately twice that of a single disk Independent Access 4 Block interleaved parity N + 1 Much higher than single disk Similar to RAID 0 for read, significantly lower than single disk for write Similar to RAID 0 for read, significantly lower than single disk for write Independent Access 5 Block interleaved parity N + 1 Much higher than single disk Similar to RAID 0 for read, lower than single disk for write Similar to RAID 0 for read, generally lower than single disk for write Independent Access 6 Block interleaved parity N + 2 Highest of all listed alternatives Similar to RAID 0 for read; lower than RAID 5 for write Similar to RAID 0 for read, significantly lower than RAID 5 for write Read page 215 – 221 for detailed explanation on RAID levels Optical Memory There are a variety of optical-disk systems available. Read through the table on page 222 – 223 Some of the devices include… CD CD-ROM CD-R CD-RW DVD DVD-R DVD-RW Blue-Ray DVD Magnetic Tape Most modern systems use serial recording – data is lade out as a sequence of bits along each track. The typical recording used in serial is referred to as serpentine recording. In this technique when data is being recorded, the first set of bits is recorded along the whole length of the tape. When the end of the tape is reached the heads are repostioned to record a new track, and the tape is again recorded on its whole length, this time in the opposite direction. That process continued back and forth until the tape is full. To increase speed, the read-write head is capable of reading and writing a number of adjacent tracks simultaneously. Data is still recorded serially along individual tracks, but blocks in sequence are stored on adjacent tracks as suggested. A tape drive is a sequential access device. Magnetic tape was the first kind of secondary memory. It is still widely used as the lowest-cost, slowest speed member of the memory hierarchy.

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How do I cross-compile my application for Ubuntu 12.04 armhf architecture on a Ubuntu 12.04 i386 host?

- by Jonathan Cave

I have a large application I have written. I can successfully compile the application in the following scenarios: in a native compilation for the i386 host running Ubuntu 12.04 natively on a PandaBoard running Ubuntu 12.04 (this takes a long time) using Qemu and a chroot on the host PC for the armhf PandaBoard target (this takes a very long time) I would like to cross-compile the application on the i386 host to run on a target such as the PandaBoard to complete builds in a timely fashion. So far attempts made using the arm-linux-gnueabihf tool chain in the repositories has produced binaries that do not run correctly. At this stage, I have no plans to package the software. What is the recommended way to achieve a successful cross-compile?

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How to model interentity membership in entity-component architecture?

- by croxis

I'm falling in love with simple grace of entity-component design, although I still have issues breaking from MVC and OOP practices. Some of my game entities have membership relationships with each other (ex: a player is a member of a city, a city is a member of a nation), and I am unsure on the best way to implement it. My initial reaction is to have a a MemberOfCity component that points to the appropriate city component, but components are suppose to have no references to each other. My other option is to have a System do it, but that would require the system to persist data outside of a component. Is there a clean way to do this in an entity-component design, or am I trying to use a hammer on a screw and should use a hybrid/another approach?

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At which architecture level are you running BDD tests (e.g. Cucumber)

- by Pete

I have in the last year gotten quite fond of using SpecFlow (which is a .NET port of Cucumber) I have used it both to test a ASP.NET MVC application at the web layer, i.e. using browser automation, but also at the controller layer. The first gives me a higher confidence in the correctness of the application, because JavaScript is tested, and improper controller configuration is also caught. But those tests are slower to execute, and more complex to implement, than those just testing on the controller layer. My tests are full functional tests, i.e. they exercise all layers of the application, all the way down to the database. So the first thing before any scenario is that the database is cleared of data, allowing the test to assume that only data specified in the "Given" block exists. Then I see example on how to use it, where they test just exercise the model layer. So what are your experiences with these tools? Which layer of the application do you test?

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How to set up Drupal Plugin Manager on MAMP in a secure way?

- by Andrei

Hi, I use MAMP PRO as global webserver. First of all, is it a good idea? Secondly, my objective is to run a Drupal website with as easy management as possible. Now I want to use Plugin Manager module to install additional modules and themes for my website. It wants to use ftp for that, and I know that if I open access to FTP port then IT-department guys will come to me and ask to shut it down. So I wonder if there is a way to allow Plugin Manager to install modules, having the port 21 closed somehow?

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Organization & Architecture UNISA Studies – Chap 4

- by MarkPearl

Learning Outcomes Explain the characteristics of memory systems Describe the memory hierarchy Discuss cache memory principles Discuss issues relevant to cache design Describe the cache organization of the Pentium Computer Memory Systems There are key characteristics of memory… Location – internal or external Capacity – expressed in terms of bytes Unit of Transfer – the number of bits read out of or written into memory at a time Access Method – sequential, direct, random or associative From a users perspective the two most important characteristics of memory are… Capacity Performance – access time, memory cycle time, transfer rate The trade off for memory happens along three axis… Faster access time, greater cost per bit Greater capacity, smaller cost per bit Greater capacity, slower access time This leads to people using a tiered approach in their use of memory As one goes down the hierarchy, the following occurs… Decreasing cost per bit Increasing capacity Increasing access time Decreasing frequency of access of the memory by the processor The use of two levels of memory to reduce average access time works in principle, but only if conditions 1 to 4 apply. A variety of technologies exist that allow us to accomplish this. Thus it is possible to organize data across the hierarchy such that the percentage of accesses to each successively lower level is substantially less than that of the level above. A portion of main memory can be used as a buffer to hold data temporarily that is to be read out to disk. This is sometimes referred to as a disk cache and improves performance in two ways… Disk writes are clustered. Instead of many small transfers of data, we have a few large transfers of data. This improves disk performance and minimizes processor involvement. Some data designed for write-out may be referenced by a program before the next dump to disk. In that case the data is retrieved rapidly from the software cache rather than slowly from disk. Cache Memory Principles Cache memory is substantially faster than main memory. A caching system works as follows.. When a processor attempts to read a word of memory, a check is made to see if this in in cache memory… If it is, the data is supplied, If it is not in the cache, a block of main memory, consisting of a fixed number of words is loaded to the cache. Because of the phenomenon of locality of references, when a block of data is fetched into the cache, it is likely that there will be future references to that same memory location or to other words in the block. Elements of Cache Design While there are a large number of cache implementations, there are a few basic design elements that serve to classify and differentiate cache architectures… Cache Addresses Cache Size Mapping Function Replacement Algorithm Write Policy Line Size Number of Caches Cache Addresses Almost all non-embedded processors support virtual memory. Virtual memory in essence allows a program to address memory from a logical point of view without needing to worry about the amount of physical memory available. When virtual addresses are used the designer may choose to place the cache between the MMU (memory management unit) and the processor or between the MMU and main memory. The disadvantage of virtual memory is that most virtual memory systems supply each application with the same virtual memory address space (each application sees virtual memory starting at memory address 0), which means the cache memory must be completely flushed with each application context switch or extra bits must be added to each line of the cache to identify which virtual address space the address refers to. Cache Size We would like the size of the cache to be small enough so that the overall average cost per bit is close to that of main memory alone and large enough so that the overall average access time is close to that of the cache alone. Also, larger caches are slightly slower than smaller ones. Mapping Function Because there are fewer cache lines than main memory blocks, an algorithm is needed for mapping main memory blocks into cache lines. The choice of mapping function dictates how the cache is organized. Three techniques can be used… Direct – simplest technique, maps each block of main memory into only one possible cache line Associative – Each main memory block to be loaded into any line of the cache Set Associative – exhibits the strengths of both the direct and associative approaches while reducing their disadvantages For detailed explanations of each approach – read the text book (page 148 – 154) Replacement Algorithm For associative and set associating mapping a replacement algorithm is needed to determine which of the existing blocks in the cache must be replaced by a new block. There are four common approaches… LRU (Least recently used) FIFO (First in first out) LFU (Least frequently used) Random selection Write Policy When a block resident in the cache is to be replaced, there are two cases to consider If no writes to that block have happened in the cache – discard it If a write has occurred, a process needs to be initiated where the changes in the cache are propagated back to the main memory. There are several approaches to achieve this including… Write Through – all writes to the cache are done to the main memory as well at the point of the change Write Back – when a block is replaced, all dirty bits are written back to main memory The problem is complicated when we have multiple caches, there are techniques to accommodate for this but I have not summarized them. Line Size When a block of data is retrieved and placed in the cache, not only the desired word but also some number of adjacent words are retrieved. As the block size increases from very small to larger sizes, the hit ratio will at first increase because of the principle of locality, which states that the data in the vicinity of a referenced word are likely to be referenced in the near future. As the block size increases, more useful data are brought into cache. The hit ratio will begin to decrease as the block becomes even bigger and the probability of using the newly fetched information becomes less than the probability of using the newly fetched information that has to be replaced. Two specific effects come into play… Larger blocks reduce the number of blocks that fit into a cache. Because each block fetch overwrites older cache contents, a small number of blocks results in data being overwritten shortly after they are fetched. As a block becomes larger, each additional word is farther from the requested word and therefore less likely to be needed in the near future. The relationship between block size and hit ratio is complex, and no set approach is judged to be the best in all circumstances. Pentium 4 and ARM cache organizations The processor core consists of four major components: Fetch/decode unit – fetches program instruction in order from the L2 cache, decodes these into a series of micro-operations, and stores the results in the L2 instruction cache Out-of-order execution logic – Schedules execution of the micro-operations subject to data dependencies and resource availability – thus micro-operations may be scheduled for execution in a different order than they were fetched from the instruction stream. As time permits, this unit schedules speculative execution of micro-operations that may be required in the future Execution units – These units execute micro-operations, fetching the required data from the L1 data cache and temporarily storing results in registers Memory subsystem – This unit includes the L2 and L3 caches and the system bus, which is used to access main memory when the L1 and L2 caches have a cache miss and to access the system I/O resources

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Is there an OpenVMS EDT keypad plugin for gedit?

- by C.W.Holeman II

Is there an OpenVMS EDT keypad (layout) plugin for gedit?

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How do I solve this "unexpected '}' syntax error" in my bash script?

- by WASasquatch

I have a piece of code that has some serious issues and I was hoping to get it solved soon but no one has offered any help. I thought I'd try some Ubuntu users since this is the OS running the script. mc_addplugin() { if pgrep -u $USERNAME -f $SERVICE > /dev/null then echo "$SERVICE is running! Please stop the service before adding a plugin." else echo "Paste the URL to the .JAR Plugin..." read JARURL JARNAME=$(basename "$JARURL") if [ -d "$TEMPPLUGINS" ] then as_user "cd $PLUGINSPATH && wget -r -A.jar $JARURL -o temp_plugins/$JARNAME" else as_user "cd $PLUGINSPATH && mkdir $TEMPPLUGINS && wget -r -A.jar $JARURL -o temp_plugins/$JARNAME" fi if [ -f "$TMPDIR/$JARNAME" ] then if [ -f "$PLUGINSPATH/$JARNAME" ] then if `diff $PLUGINSPATH/$JARNAME $TMPDIR/$JARNAME >/dev/null` then echo "You are already running the latest version of $JARNAME." else NOW=`date "+%Y-%m-%d_%Hh%M"` echo "Are you sure you want to overwrite this plugin? [Y/n]" echo "Note: Your old plugin will be moved to the "$TEMPPLUGINS" folder with todays date." select yn in "Yes" "No"; do case $yn in Yes ) as_user "mv $PLUGINSPATH/$JARNAME $TEMPPLUGINS/${JARNAME}_${NOW} && mv $TEMPPLUGINS/$JARNAME $PLUGINSPATH/$JARNAME"; break;; No ) echo "The plugin has not been installed! Removing temporary plugin and exiting..." as_user "rm $TEMPPLUGINS/$JARNAME"; exit;; esac done echo "Would you like to start the $SERVICE now? [Y/n]" select yn in "Yes" "No"; do case $yn in Yes ) mc_start; break;; No ) "$SERVICE not running! To start the service run: /etc/init.d/craftbukkit start"; exit;; esac done fi else echo "Are you sure you want to add this new plugin? [Y/n]" select yn in "Yes" "No"; do case $yn in Yes ) as_user "mv $PLUGINSPATH/$JARNAME $TEMPPLUGINS/${JARNAME}_${NOW} && mv $TEMPPLUGINS/$JARNAME $PLUGINSPATH/$JARNAME"; break;; No ) echo "The plugin has not been installed! Removing temporary plugin and exiting..." as_user "rm $TEMPPLUGINS/$JARNAME"; exit;; esac done echo "Would you like to start the $SERVICE now? [Y/n]?" select yn in "Yes" "No"; do case $yn in Yes ) mc_start; break;; No ) "$SERVICE not running! To start the service run: /etc/init.d/craftbukkit start"; exit;; esac done fi else echo "Failed to download the plugin from the URL you specified!" exit; fi } It throws it at the closing bracket at the end of the function.

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If most of team can't follow the architecture, what do you do?

- by Chris

Hi all, I'm working on a greenfields project with two other developers. We're all contractors, and myself and one other just started working on the project while the orginal one has been doing most of the basic framework coding. In the past month, my fellow programmer and I have been just frustrated by the design descisions done by our co-worker. Here's a little background information: The application at face value appeared to be your standard n-layered web application using C# on the 3.5 framework. We have a data layer, business layer and a web interface. But as we got deeper into the project we found some very interesting things that have caused us some troubles. There is a custom data access sqlHelper type base which only accepts dictionary key/valued entries and returns only data tables. There are no entity objects, but there are some massive objects which do everything and then are tossed into session for persitance. The general idea is that the pages (.aspx) don't do anything, while the controls (.ascx) do everything. The general flow is that a client clicks on a button, which goes to a user control base which passes a process request to the 'BLL' class which goes to the page processor, which then goes to a getControlProcessor, which at last actually processes the request. The request itself is made up of a dictionary which is passing a string valued method name, stored procedure name, a control name and possibly a value. All switching of the processing is done by comparing the string values of the control names and method names. Pages are linked together via a common header control that uses a combination of javascript and tables to create a hyperlink effect. And as I found out yesterday, a simple hyperlink between one page and another does not work because of the need to have quite a bit of information in session to determine which control to display on a page. My fellow programmer and I both believe that this is a strange and uncommon approach to web application development. Both of us have been in this business for over five years and neither of us have seen this approach. My question is this, how would we approach our co-worker and voice our concerns and what should we do if he does not want to accept the criteic? We both do not want to insult the work that has been done, but feel that going forward will create a nightmare for development. Thanks for your comments.

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Is there any kind of established architecture for browser based MMO games?

- by black_puppydog

I am beginning the development of a broser based game in which players take certain actions at any point in time. Big parts of gameplay will be happening in real life and just have to be entered into the system. I believe a good kind of comparison might be a platform for managing fantasy football, although I have virtually no experience playing that, so please correct me if I am mistaken here. The point is that some events happen in the program (i.e. on the server, out of reach for the players) like pulling new results from some datasource, starting of a new round by a game master and such. Other events happen in real life (two players closing a deal on the transfer of some team member or whatnot - again: have never played fantasy football) and have to be entered into the system. The first part is pretty easy since the game masters will be "staff" and thus can be trusted to a certain degree to not mess with the system. But the second part bothers me quite a lot, especially since the actions may involve multiple steps and interactions with different players, like registering a deal with the system that then has to be approved by the other party or denied and passed on to a game master to decide. I would of course like to separate the game logic as far as possible from the presentation and basic form validation but am unsure how to do this in a clean fashion. Of course I could (and will) put some effort into making my own architectural decisions and prototype different ideas. But I am bound to make some stupid mistakes at some point, so I would like to avoid some of that by getting a little "book smart" beforehand. So the question is: Is there any kind of architectural works that I can read up on? Papers, blogs, maybe design documents or even source code? Writing this down this seems more like a business application with business rules, workflows and such... Any good entry points for that?

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How to set up Drupal Plugin Manager on MAMP in a secure way?

- by Andrei

Hi, I use MAMP PRO as global webserver. First of all, is it a good idea? Secondly, my objective is to run a Drupal website with as easy management as possible. Now I want to use Plugin Manager module to install additional modules and themes for my website. It wants to use ftp for that, and I know that if I open access to FTP port then IT-department guys will come to me and ask to shut it down. So I wonder if there is a way to allow Plugin Manager to install modules, having the port 21 closed somehow?

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Java plugin doesn't work in Chrome -- how can I fix this?

- by Chris Farmer

This used to work fine until a week or so ago, and I am not sure what has changed since then. I have just uninstalled what seems to be all the JVM stuff on my machine and reinstalled with the latest recommended Java version from java.com (1.6, update 23). The plugin works fine in IE and Firefox, but in Chrome it fails and the pages that try to use the plugin act as if Java is not installed. I have tried this in both Chrome 8 and Chrome 9 with the same result. How can I diagnose and fix this?

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In choosing a service-oriented architecture framework that needs to work with .NET and with Java, what to look for?

- by cm007

I planning to write an application in which there will be a service (call it A) listening for particular commands. This service will then relay those commands to other services (call them B and C) which are written, respectively, in .NET and Java (service A chooses which of service B or C to which to relay depending on the contents of the request to service A). I am looking for a framework that will allow for interoperability with both .NET and with Java, for example WCF or JAX-WS, or writing a custom framework (e.g., JSON REST commands over HTTP, similar to http://code.google.com/p/selenium/wiki/JsonWireProtocol). What questions/aspects should I consider in deciding?

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Is there a OpenVMS EDT keypad plugin for gedit?

- by C.W.Holeman II

Is there a OpenVMS EDT keypad (layout) plugin for gedit?

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Software Architecture: How to divide work to a network of computers?

- by Morpork

Imagine a scenario as follows: Lets say you have a central computer which generates a lot of data. This data must go through some processing, which unfortunately takes longer than to generate. In order for the processing to catch up with real time, we plug in more slave computers. Further, we must take into account the possibility of slaves dropping out of the network mid-job as well as additional slaves being added. The central computer should ensure that all jobs are finished to its satisfaction, and that jobs dropped by a slave are retasked to another. The main question is: What approach should I use to achieve this? But perhaps the following would help me arrive at an answer: Is there a name or design pattern to what I am trying to do? What domain of knowledge do I need to achieve the goal of getting these computers to talk to each other? (eg. will a database, which I have some knowledge of, be enough or will this involve sockets, which I have yet to have knowledge of?) Are there any examples of such a system? The main question is a bit general so it would be good to have a starting point/reference point. Note I am assuming constraints of c++ and windows so solutions pointing in that direction would be appreciated.

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