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  • Setup Custom Portal & Content Enabled Domain

    - by Stefan Krantz
    When overlooking the past year we have seen a large increase in deployments where only some parts of the WebCenter Suite infrastructure has been used. The most common from my personal perspective is a domain topology that includes: WebCenter Custom Portal, WebCenter Content and Oracle HTTP ServicesToday its very common to see installation where the whole suite is installed when the use case only requires the custom portal and some sub component like WebCenter Content. This post will go into detail on how to minimize the deployment time and effort by only laying down the necessary managed servers needed, by following this proposed method you will minimize the configuration steps and only install the required components and schema's, configure only the necessary components and minimize the impact of architectural changes through reduced dependencies. Assumptions: Oracle 11g Database installed SYS or equivalent access to Database to setup schema's via RCU Running Operating System supporting JDK 7 Update 2 (Check support matrix here) Good understanding of WebLogic Architecture Binaries: Oracle JDK 7 Update 2 (1.7.0_02) (Download) Oracle WebLogic 10.3.6 (Download) Oracle WebCenter Binaries (11.1.1.6) (Download) Oracle WebCenter Content Binaries (11.1.1.6) (Download 1) (Download 2) Oracle HTTP Services (11.1.1.6) (Download) Oracle Repository Creation Utility (11.1.1.6) (Download Linux or Windows) Schema's: Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} MDS - Meta Data Services (WebCenter and OWSM) WebCenter (WebCenter Schema) OCS (Oracle WebCenter Content) Activities (WebCenter Activities) OPSS (Policy Store for WebCenter) Installation Structure: - [Installation Home]/Middleware    - Oracle_WC1 (WebCenter Installation)    - Oracle_WT1 (Oracle WebTier)    - Oracle_ECM (WebCenter Content)    - wlserver_10.3 (Weblogic installation)- [Installation Home]/domains    - webcenter (WebCenter Domain)    - instances (OHS/OPMN instance)- [Installation Home]/applications- [Installation Home]/JDK1.7.0_02 Installation and Configuration Steps: Install Java and configure Java Home Extract the Java Installable (jdk-7u2-linux-x64) to [Installation Home]/JDK1.7.0_02 Add JAVA_HOME to Environment Settings (JAVA_HOME=[Installation Home]/JDK1.7.0_02) Update PATH in Environment Settings (PATH=$JAVA_HOME/bin:$PATH) Install WebLogic Server (Middleware Home) Run the installer / execute jar file (java - jar wls1036_generic.jar) Create the Middleware Home under [Installation Home]/Middleware Install WebCenter Portal (Extend Middleware Home) Extract the compressed file (ofm_wc_generic_11.1.1.6.0_disk1_1of1.zip) to a temp folder Execute runInstaller under folder (DISK1/) with following command (runInstaller -jreLoc $JAVA_HOME) Make sure to install in following structure ([Installation Home]/Middleware/Oracle_WC1) Install WebCenter Content (Extend Middleware Home) Extract the compressed files (ofm_wcc_generic_11.1.1.6.0_disk1_1of2.zip & ofm_wcc_generic_11.1.1.6.0_disk1_2of2.zip) to the same temp folder Execute runInstaller under folder (DISK1/) with following command (runInstaller -jreLoc $JAVA_HOME) Make sure to install in following structure ([Installation Home]/Middleware/Oracle_ECM) Configure Initial Domain (Domain name webcenter) Execute configuration tool - [Installation Home]/Middleware/wlserver_10.3/common/bin/config Select "Create a New Weblogic Domain" Select following template (Basic Weblogic Server Domain, Oracle Enterprise Manager, Oracle WSM Policy Manager, Oracle JRF) Create new domain with name webcenter under following location ([Installation Home]/domains) for applications ([Installation Home]/applications) Select Production Mode Finish Configuration wizard Setup username for startup scripts - Add a new file called boot.properties to ([Installation Home]/domains/webcenter/servers/AdminServer/security)Add following lines to boot.propertiesusername=weblogicpassword=[password clear text, it will be encrypted during first start] Start AdminServer in the background ([Installation Home]/domains/webcenter/bin/startWeblogic) Install and Configure Oracle WebTier (OHS Server) Extract compressed file (ofm_webtier_linux_11.1.1.6.0_64_disk1_1of1.zip) to a temp folder Execute runInstaller under folder (DISK1/) with following command (runInstaller) Select Install & Configure option Deselect Oracle WebCache Auto Configure Ports Configure Schema's with RCU (Repository Creation Utility) Extract compressed file (ofm_rcu_linux_11.1.1.6.0_disk1_1of1.zip) to a temp folder Execute rcu with following command ([temp]/rcuHome/rcu) Make sure database meets RCU requirements, particular (PROCESSES is 200 or more) Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Using SQLPLUS and sys user tou can update this configuration in the database with following procedure:ALTER SYSTEM SET PROCESSES=200 SCOPE=SPFILE shutdown immediate startup Create and Configure following schemas:MDS - Meta Data Services (WebCenter and OWSM)WebCenter (WebCenter Schema)OCS (Oracle WebCenter Content)Activities (WebCenter Activities)OPSS (Policy Store for WebCenter) Remember selected schema prefix and password (will be used later) Configure WebCenter Portal instance (WC_CustomPortal) Execute following command to start configuration wizard ([Installation Home]/Middleware/Oracle_WC1/common/bin/config) Select Extend an Existing WebLogic domain Select the existing webcenter domain ([Installation Home]/domains/webcenter) Select Extend my domain using existing extension templateBrowse to ([Installation Home]/Middleware/Oracle_WC1/common/templates/applications)Select oracle.wc_custom_portal_template_11.1.1.jar Select to configure (Managed Servers/Clusters/Machines) On the Managed Server Screen you can now configure 1 or more WC_CustomPortal managed servers (name them WC_CustomPortal[n] (skip numbering if not clustered)) In case of two WC_CustomPortal Servers then create a Cluster (any name) and make sure the managed servers join the new cluster Create a new machine with same name as the current machine Make sure the AdminServer and WC_CustomPortal[n] managed servers joins the machine Finish the configuration wizard Stop AdminServer ([Installation Home]/domains/webcenter/bin/stopWeblogic) Start AdminServer in the background ([Installation Home]/domains/webcenter/bin/startWeblogic) Start WC_CustomPortal in the foreground (([Installation Home]/domains/webcenter/bin/startManagedServer WC_CustomPortal))- repeat for each WC_CustomPortal instance on the host Give credentials for weblogic user on start up Copy folder security including file boot.properties - from ([Installation Home]/domains/webcenter/servers/AdminServer/) to ([Installation Home]/domains/webcenter/servers/WC_CustomPortal/) Result should be ([Installation Home]/domains/webcenter/servers/WC_CustomPortal/security/boot.properties) Configure WebCenter Content instance (UCM_server1) Execute following command to start configuration wizard ([Installation Home]/Middleware/Oracle_ECM/common/bin/config) Select Extend an Existing WebLogic domain Select Oracle Universal Content Management - Content Server Select to configure (Managed Servers/Clusters/Machines) On Managed Server Screen create only one managed server instance (UCM_server1 on port 16200 (you can select any other available port)) Make sure the UCM_server1 managed server joins the machine Finish the configuration wizard Stop AdminServer ([Installation Home]/domains/webcenter/bin/stopWeblogic) Start AdminServer in the background ([Installation Home]/domains/webcenter/bin/startWeblogic) Start UCM_server1 in the foreground ([Installation Home]/domains/webcenter/bin/startManagedServer UCM_server1)Give credentials for weblogic user on start up Copy folder security including file boot.properties - from ([Installation Home]/domains/webcenter/servers/AdminServer/) to ([Installation Home]/domains/webcenter/servers/UCM_server1/ Result should be ([Installation Home]/domains/webcenter/servers/UCM_server1/security/boot.properties) Post Configure WebCenter Content instance for WebCenter Portal Open a browser where you have support for Java applets - navigate to http://host:port/cs WARNING: The page that you are presented with after authentication will only appear once for each instance WARNING: Make sure you set correct storage options - also remember to consider file sharing options if you like to cluster your Content Server instance over multiple hosts Set an appropriate Auto number prefix Update the Server Socket Port: Commonly set to (4444)  used for RIDC communication (a requirement for WebCenter Portal) Update the IP Address Filter to include the IP that is planned to access the server over RIDC - at the minimum add the ip address of the current host (this option can be updated later via EM) Stop UCM_server1 ([Installation Home]/domains/webcenter/bin/stopManagedServer UCM_server1) Start UCM_server1 in the background([Installation Home]/domains/webcenter/bin/startManagedServer UCM_server1) Open a browser where you have support for Java applets - navigate to http://host:port/cs Navigate to Administration/Admin Server Go to General ConfigurationCheck Enable AccountsIn Additional Configuration Variables (Add on two lines) Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} AllowUpdateForGenwww=1CollectionUseCache=1 Save the changes and go to Component Manager Click on the link advanced component manager Enable following components Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Folders_g, WebCenterConfigure, SiteStudio, SiteStudioExternalApplications, DBSearchContainsOpSupport WARNING: Make sure that following component is disabled: FrameworkFolders Stop UCM_server1 ([Installation Home]/domains/webcenter/bin/stopManagedServer UCM_server1) Start UCM_server1 in the background([Installation Home]/domains/webcenter/bin/startManagedServer UCM_server1) Open a browser where you have support for Java applets - navigate to http://host:port/cs Navigate to Administration/Site Studio Administration and update - Do not forget to save and submit each page Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Set Default ProjectSet Default WebAssets Post Configure Oracle WebTier (OHS) to include Content Server and WebCenter Portal application context Update following file - [Installation Home]/domains/instances/instance1/config/OHS/ohs1/mod_wl_ohs.conf For single add lines from following example: Link For clustered environment add lines from following template (note the clustering in example on applies to WC_CustomPortal): Link For more information on this: http://docs.oracle.com/cd/E23943_01/core.1111/e12037/contentsvr.htm#WCEDG318 Optional - Configure JOC Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Follow instructions: http://docs.oracle.com/cd/E23943_01/core.1111/e12037/extend_wc.htm#WCEDG264 Optional (Recommended) - Configure Node Manager Follow instructions: Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} http://docs.oracle.com/cd/E23943_01/core.1111/e12037/node_manager.htm#WCEDG277 Optional (Mandatory for clustered environments) - Re-Associate Policy Store to Database or OID Follow instructions: Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} http://docs.oracle.com/cd/E23943_01/webcenter.1111/e12405/wcadm_security_credstore.htm#CFHDEDJH Optional - Configure Coherence for Content Presenter Follow instructions in Blog Post (This post is for PS4): https://blogs.oracle.com/ATEAM_WEBCENTER/entry/enabling_coherence_for_content_presenter Other Recommended Post Cloning WebCenter Custom Portal - https://blogs.oracle.com/ATEAM_WEBCENTER/entry/cloning_a_webcenter_portal_managedImproving WebCenter Performance through caching - https://blogs.oracle.com/ATEAM_WEBCENTER/entry/improving_webcenter_performance

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  • Insert Record by Drag & Drop from ADF Tree to ADF Tree Table

    - by arul.wilson(at)oracle.com
    If you want to create record based on the values Dragged from ADF Tree and Dropped on a ADF Tree Table, then here you go.UseCase DescriptionUser Drags a tree node from ADF Tree and Drops it on a ADF Tree Table node. A new row gets added in the Tree Table based on the source tree node, subsequently a record gets added to the database table on which Tree table in based on.Following description helps to achieve this using ADF BC.Run the DragDropSchema.sql to create required tables.Create Business Components from tables (PRODUCTS, COMPONENTS, SUB_COMPONENTS, USERS, USER_COMPONENTS) created above.Add custom method to App Module Impl, this method will be used to insert record from view layer.   public String createUserComponents(String p_bugdbId, String p_productId, String p_componentId, String p_subComponentId){    Row newUserComponentsRow = this.getUserComponentsView1().createRow();    try {      newUserComponentsRow.setAttribute("Bugdbid", p_bugdbId);      newUserComponentsRow.setAttribute("ProductId", new oracle.jbo.domain.Number(p_productId));      newUserComponentsRow.setAttribute("Component1", p_componentId);      newUserComponentsRow.setAttribute("SubComponent", p_subComponentId);    } catch (Exception e) {        e.printStackTrace();        return "Failure";    }        return "Success";  }Expose this method to client interface.To display the root node we need a custom VO which can be achieved using below query. SELECT Users.ACTIVE, Users.BUGDB_ID, Users.EMAIL, Users.FIRSTNAME, Users.GLOBAL_ID, Users.LASTNAME, Users.MANAGER_ID, Users.MANAGER_PRIVILEGEFROM USERS UsersWHERE Users.MANAGER_ID is NULLCreate VL between UsersView and UsersRootNodeView VOs.Drop ProductsView from DC as ADF Tree to jspx page.Add Tree Level Rule based on ComponentsView and SubComponentsView.Drop UsersRootNodeView as ADF Tree TableAdd Tree Level Rules based on UserComponentsView and UsersView.Add DragSource to ADF Tree and CollectionDropTarget to ADF Tree Table respectively.Bind CollectionDropTarget's DropTarget to backing bean and implement method of signature DnDAction (DropEvent), this method gets invoked when Tree Table encounters a drop action, here details required for creating new record are captured from the drag source and passed to 'createUserComponents' method. public DnDAction onTreeDrop(DropEvent dropEvent) {      String newBugdbId = "";      String msgtxt="";            try {          // Getting the target node bugdb id          Object serverRowKey = dropEvent.getDropSite();          if (serverRowKey != null) {                  //Code for Tree Table as target              String dropcomponent = dropEvent.getDropComponent().toString();              dropcomponent = (String)dropcomponent.subSequence(0, dropcomponent.indexOf("["));              if (dropcomponent.equals("RichTreeTable")){                RichTreeTable richTreeTable = (RichTreeTable)dropEvent.getDropComponent();                richTreeTable.setRowKey(serverRowKey);                int rowIndexTreeTable = richTreeTable.getRowIndex();                //Drop Target Logic                if (((JUCtrlHierNodeBinding)richTreeTable.getRowData(rowIndexTreeTable)).getAttributeValue()==null) {                  //Get Parent                  newBugdbId = (String)((JUCtrlHierNodeBinding)richTreeTable.getRowData(rowIndexTreeTable)).getParent().getAttributeValue();                } else {                  if (isNum(((JUCtrlHierNodeBinding)richTreeTable.getRowData(rowIndexTreeTable)).getAttributeValue().toString())) {                    //Get Parent's parent                              newBugdbId = (String)((JUCtrlHierNodeBinding)richTreeTable.getRowData(rowIndexTreeTable)).getParent().getParent().getAttributeValue();                  } else{                      //Dropped on USER                                          newBugdbId = (String)((JUCtrlHierNodeBinding)richTreeTable.getRowData(rowIndexTreeTable)).getAttributeValue();                  }                  }              }           }                     DataFlavor<RowKeySet> df = DataFlavor.getDataFlavor(RowKeySet.class);          RowKeySet droppedValue = dropEvent.getTransferable().getData(df);            Object[] keys = droppedValue.toArray();          Key componentKey = null;          Key subComponentKey = null;           // binding for createUserComponents method defined in AppModuleImpl class  to insert record in database.                      operationBinding = bindings.getOperationBinding("createUserComponents");            // get the Product, Component, Subcomponent details and insert to UserComponents table.          // loop through the keys if more than one comp/subcomponent is select.                   for (int i = 0; i < keys.length; i++) {                  System.out.println("in for :"+i);              List list = (List)keys[i];                  System.out.println("list "+i+" : "+list);              System.out.println("list size "+list.size());              if (list.size() == 1) {                                // we cannot drag and drop  the highest node !                                msgtxt="You cannot drop Products, please drop Component or SubComponent from the Tree.";                  System.out.println(msgtxt);                                this.showInfoMessage(msgtxt);              } else {                  if (list.size() == 2) {                    // were doing the first branch, in this case all components.                    componentKey = (Key)list.get(1);                    Object[] droppedProdCompValues = componentKey.getAttributeValues();                    operationBinding.getParamsMap().put("p_bugdbId",newBugdbId);                    operationBinding.getParamsMap().put("p_productId",droppedProdCompValues[0]);                    operationBinding.getParamsMap().put("p_componentId",droppedProdCompValues[1]);                    operationBinding.getParamsMap().put("p_subComponentId","ALL");                    Object result = operationBinding.execute();              } else {                    subComponentKey = (Key)list.get(2);                    Object[] droppedProdCompSubCompValues = subComponentKey.getAttributeValues();                    operationBinding.getParamsMap().put("p_bugdbId",newBugdbId);                    operationBinding.getParamsMap().put("p_productId",droppedProdCompSubCompValues[0]);                    operationBinding.getParamsMap().put("p_componentId",droppedProdCompSubCompValues[1]);                    operationBinding.getParamsMap().put("p_subComponentId",droppedProdCompSubCompValues[2]);                    Object result = operationBinding.execute();                  }                   }            }                        /* this.getCil1().setDisabled(false);            this.getCil1().setPartialSubmit(true); */                      return DnDAction.MOVE;        } catch (Exception ex) {          System.out.println("drop failed with : " + ex.getMessage());          ex.printStackTrace();                  /* this.getCil1().setDisabled(true); */          return DnDAction.NONE;          }    } Run jspx page and drop a Component or Subcomponent from Products Tree to UserComponents Tree Table.

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  • Flow-Design Cheat Sheet &ndash; Part I, Notation

    - by Ralf Westphal
    You want to avoid the pitfalls of object oriented design? Then this is the right place to start. Use Flow-Oriented Analysis (FOA) and –Design (FOD or just FD for Flow-Design) to understand a problem domain and design a software solution. Flow-Orientation as described here is related to Flow-Based Programming, Event-Based Programming, Business Process Modelling, and even Event-Driven Architectures. But even though “thinking in flows” is not new, I found it helpful to deviate from those precursors for several reasons. Some aim at too big systems for the average programmer, some are concerned with only asynchronous processing, some are even not very much concerned with programming at all. What I was looking for was a design method to help in software projects of any size, be they large or tiny, involing synchronous or asynchronous processing, being local or distributed, running on the web or on the desktop or on a smartphone. That´s why I took ideas from all of the above sources and some additional and came up with Event-Based Components which later got repositioned and renamed to Flow-Design. In the meantime this has generated some discussion (in the German developer community) and several teams have started to work with Flow-Design. Also I´ve conducted quite some trainings using Flow-Orientation for design. The results are very promising. Developers find it much easier to design software using Flow-Orientation than OOAD-based object orientation. Since Flow-Orientation is moving fast and is not covered completely by a single source like a book, demand has increased for at least an overview of the current state of its notation. This page is trying to answer this demand by briefly introducing/describing every notational element as well as their translation into C# source code. Take this as a cheat sheet to put next to your whiteboard when designing software. However, please do not expect any explanation as to the reasons behind Flow-Design elements. Details on why Flow-Design at all and why in this specific way you´ll find in the literature covering the topic. Here´s a resource page on Flow-Design/Event-Based Components, if you´re able to read German. Notation Connected Functional Units The basic element of any FOD are functional units (FU): Think of FUs as some kind of software code block processing data. For the moment forget about classes, methods, “components”, assemblies or whatever. See a FU as an abstract piece of code. Software then consists of just collaborating FUs. I´m using circles/ellipses to draw FUs. But if you like, use rectangles. Whatever suites your whiteboard needs best.   The purpose of FUs is to process input and produce output. FUs are transformational. However, FUs are not called and do not call other FUs. There is no dependency between FUs. Data just flows into a FU (input) and out of it (output). From where and where to is of no concern to a FU.   This way FUs can be concatenated in arbitrary ways:   Each FU can accept input from many sources and produce output for many sinks:   Flows Connected FUs form a flow with a start and an end. Data is entering a flow at a source, and it´s leaving it through a sink. Think of sources and sinks as special FUs which conntect wires to the environment of a network of FUs.   Wiring Details Data is flowing into/out of FUs through wires. This is to allude to electrical engineering which since long has been working with composable parts. Wires are attached to FUs usings pins. They are the entry/exit points for the data flowing along the wires. Input-/output pins currently need not be drawn explicitly. This is to keep designing on a whiteboard simple and quick.   Data flowing is of some type, so wires have a type attached to them. And pins have names. If there is only one input pin and output pin on a FU, though, you don´t need to mention them. The default is Process for a single input pin, and Result for a single output pin. But you´re free to give even single pins different names.   There is a shortcut in use to address a certain pin on a destination FU:   The type of the wire is put in parantheses for two reasons. 1. This way a “no-type” wire can be easily denoted, 2. this is a natural way to describe tuples of data.   To describe how much data is flowing, a star can be put next to the wire type:   Nesting – Boards and Parts If more than 5 to 10 FUs need to be put in a flow a FD starts to become hard to understand. To keep diagrams clutter free they can be nested. You can turn any FU into a flow: This leads to Flow-Designs with different levels of abstraction. A in the above illustration is a high level functional unit, A.1 and A.2 are lower level functional units. One of the purposes of Flow-Design is to be able to describe systems on different levels of abstraction and thus make it easier to understand them. Humans use abstraction/decomposition to get a grip on complexity. Flow-Design strives to support this and make levels of abstraction first class citizens for programming. You can read the above illustration like this: Functional units A.1 and A.2 detail what A is supposed to do. The whole of A´s responsibility is decomposed into smaller responsibilities A.1 and A.2. FU A thus does not do anything itself anymore! All A is responsible for is actually accomplished by the collaboration between A.1 and A.2. Since A now is not doing anything anymore except containing A.1 and A.2 functional units are devided into two categories: boards and parts. Boards are just containing other functional units; their sole responsibility is to wire them up. A is a board. Boards thus depend on the functional units nested within them. This dependency is not of a functional nature, though. Boards are not dependent on services provided by nested functional units. They are just concerned with their interface to be able to plug them together. Parts are the workhorses of flows. They contain the real domain logic. They actually transform input into output. However, they do not depend on other functional units. Please note the usage of source and sink in boards. They correspond to input-pins and output-pins of the board.   Implicit Dependencies Nesting functional units leads to a dependency tree. Boards depend on nested functional units, they are the inner nodes of the tree. Parts are independent, they are the leafs: Even though dependencies are the bane of software development, Flow-Design does not usually draw these dependencies. They are implicitly created by visually nesting functional units. And they are harmless. Boards are so simple in their functionality, they are little affected by changes in functional units they are depending on. But functional units are implicitly dependent on more than nested functional units. They are also dependent on the data types of the wires attached to them: This is also natural and thus does not need to be made explicit. And it pertains mainly to parts being dependent. Since boards don´t do anything with regard to a problem domain, they don´t care much about data types. Their infrastructural purpose just needs types of input/output-pins to match.   Explicit Dependencies You could say, Flow-Orientation is about tackling complexity at its root cause: that´s dependencies. “Natural” dependencies are depicted naturally, i.e. implicitly. And whereever possible dependencies are not even created. Functional units don´t know their collaborators within a flow. This is core to Flow-Orientation. That makes for high composability of functional units. A part is as independent of other functional units as a motor is from the rest of the car. And a board is as dependend on nested functional units as a motor is on a spark plug or a crank shaft. With Flow-Design software development moves closer to how hardware is constructed. Implicit dependencies are not enough, though. Sometimes explicit dependencies make designs easier – as counterintuitive this might sound. So FD notation needs a ways to denote explicit dependencies: Data flows along wires. But data does not flow along dependency relations. Instead dependency relations represent service calls. Functional unit C is depending on/calling services on functional unit S. If you want to be more specific, name the services next to the dependency relation: Although you should try to stay clear of explicit dependencies, they are fundamentally ok. See them as a way to add another dimension to a flow. Usually the functionality of the independent FU (“Customer repository” above) is orthogonal to the domain of the flow it is referenced by. If you like emphasize this by using different shapes for dependent and independent FUs like above. Such dependencies can be used to link in resources like databases or shared in-memory state. FUs can not only produce output but also can have side effects. A common pattern for using such explizit dependencies is to hook a GUI into a flow as the source and/or the sink of data: Which can be shortened to: Treat FUs others depend on as boards (with a special non-FD API the dependent part is connected to), but do not embed them in a flow in the diagram they are depended upon.   Attributes of Functional Units Creation and usage of functional units can be modified with attributes. So far the following have shown to be helpful: Singleton: FUs are by default multitons. FUs in the same of different flows with the same name refer to the same functionality, but to different instances. Think of functional units as objects that get instanciated anew whereever they appear in a design. Sometimes though it´s helpful to reuse the same instance of a functional unit; this is always due to valuable state it holds. Signify this by annotating the FU with a “(S)”. Multiton: FUs on which others depend are singletons by default. This is, because they usually are introduced where shared state comes into play. If you want to change them to be a singletons mark them with a “(M)”. Configurable: Some parts need to be configured before the can do they work in a flow. Annotate them with a “(C)” to have them initialized before any data items to be processed by them arrive. Do not assume any order in which FUs are configured. How such configuration is happening is an implementation detail. Entry point: In each design there needs to be a single part where “it all starts”. That´s the entry point for all processing. It´s like Program.Main() in C# programs. Mark the entry point part with an “(E)”. Quite often this will be the GUI part. How the entry point is started is an implementation detail. Just consider it the first FU to start do its job.   Patterns / Standard Parts If more than a single wire is attached to an output-pin that´s called a split (or fork). The same data is flowing on all of the wires. Remember: Flow-Designs are synchronous by default. So a split does not mean data is processed in parallel afterwards. Processing still happens synchronously and thus one branch after another. Do not assume any specific order of the processing on the different branches after the split.   It is common to do a split and let only parts of the original data flow on through the branches. This effectively means a map is needed after a split. This map can be implicit or explicit.   Although FUs can have multiple input-pins it is preferrable in most cases to combine input data from different branches using an explicit join: The default output of a join is a tuple of its input values. The default behavior of a join is to output a value whenever a new input is received. However, to produce its first output a join needs an input for all its input-pins. Other join behaviors can be: reset all inputs after an output only produce output if data arrives on certain input-pins

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  • CodePlex Daily Summary for Monday, June 27, 2011

    CodePlex Daily Summary for Monday, June 27, 2011Popular ReleasesSQL Compact Bulk Insert Library: beta 2.0: Update, with ColumnMappings and support for IEnumerable implemented (for most data types, anyway).MiniTwitter: 1.71: MiniTwitter 1.71 ???? ?? OAuth ???????????? ????????、??????????????????? ???????????????????????SizeOnDisk: 1.0.10.0: Fix: issue 327: size format error when save settings Fix: some UI bindings trouble (sorting, refresh) Fix: user settings file deletion when corrupted Feature: TreeView virtualization (better speed with many folders) Feature: New file type DataGrid column Feature: In KByte view, show size of file < 1024B and > 0 with 3 decimal Feature: New language: Italian Task: Cleanup for speedRawr: Rawr 4.2.0: This is the Downloadable WPF version of Rawr!For web-based version see http://elitistjerks.com/rawr.php You can find the version notes at: http://rawr.codeplex.com/wikipage?title=VersionNotes Rawr AddonWe now have a Rawr Official Addon for in-game exporting and importing of character data hosted on Curse. The Addon does not perform calculations like Rawr, it simply shows your exported Rawr data in wow tooltips and lets you export your character to Rawr (including bag and bank items) like Char...HD-Trailers.NET Downloader: HD-Trailer.net Downloader 1.86: This version implements a new config flag "ConsiderTheatricalandNumberedTrailersasIdentical" that for the purposes of Exclusions only Teaser Trailer and one Trailer (named Trailer, Theatrical Traler Trailer No. 1, Trailer 1, Trailer No. 2, etc) will be downloaded. This also includes a bug fix where the .nfo file did not include the -trailer if configured for XBMC.N2 CMS: 2.2: * Web platform installer support available ** Nuget support available What's newDinamico Templates (beta) - an MVC3 & Razor based template pack using the template-first! development paradigm Boilerplate CSS & HTML5 Advanced theming with css comipilation (concrete, dark, roadwork, terracotta) Template-first! development style Content, news, listing, slider, image sizes, search, sitemap, globalization, youtube, google map Display Tokens - replaces text tokens with rendered content (usag...TerrariViewer: TerrariViewer v4.0 [Terraria Inventory Editor]: Version 4.0 Changelog Continued support for Terraria v1.0.5 Fixed image display problem (Major Issue) Added Buff tabs to allowed editing character buffs Added support for displays whose DPI is set to 120 (Major Issue) Added support for screen resolutions that are horizontally smaller than 1280 (Major Issue) Changed the way users will select replacement items on multiple tabs Added items that were missing in the latest Terraria update Fixed various other bugsCoding4Fun Tools: Coding4Fun.Phone.Toolkit v1.4.2: All color pickers can have value set now and UX updates Bunch of fixes - see check-in notes and associated bugsMosaic Project: Mosaic Alpha Build 256: - Improved support for HTML widgets - Added options support for HTML widgets - Added hubs support for all widgets - Added Lock widget which shows Windows 8 like lock screen when you click on it - Added HTML Today widget (by Daniel Steiner)NCalc - Mathematical Expressions Evaluator for .NET: NCalc - 1.3.7: Fixing overflow when comparing long values Circuit Diagram: Circuit Diagram v0.5 Beta: New in this release: New components: Ammeter (meter) Voltmeter (meter) Undo/redo functionality for placing/moving components Choose resolution when exporting PNG image New logothinktecture WSCF.blue: WSCF.blue V1 Update (1.0.12): Features Added a new AutoSetSpecifiedPropertiesDecorator to automatically set the _Specified property to true when setter on matching property is called. Obviously this will only work when the Properties option is used. Bug Fixes Reduced the number of times menu visibility is updated in the SelectionEvents.OnChange event to help prevent OutOfMemoryException inside EnvDTE. Fixed NullReferenceException in OnTypeNameChanged method of MessageContractConverter. Improved validation of namespac....Net Image Processor: v1.0: Initial release of the library containing the core architecture and two filters. To install, extract the library to somewhere sensible then reference as a file from your project in Visual Studio.KinectNUI: Jun 25 Alpha Release: Initial public version. No installer needed, just run the EXE.Media Companion: MC 3.409b-1 Weekly: This weeks release is part way through a major rewrite of the TVShow code. This means that a few TV related features & functions are not fully operational at the moment. The reason for this release is so that people can see if their particular issue has been fixed during the week. Some issues may not be able to be fully checked due to the ongoing TV code refactoring. So, I would strongly suggest that you put this version into a separate folder, copy your settings folder across & test MC that...Terraria World Viewer: Version 1.5: Update June 24th Made compatible with the new tiles found in Terraria 1.0.5CuttingEdge.Conditions: CuttingEdge.Conditions v1.2: CuttingEdge.Conditions is a library that helps developers to write pre- and postcondition validations in their C# 3.0 and VB.NET 9 code base. Writing these validations is easy and it improves the readability and maintainability of code. This release adds IsNullOrWhiteSpace and IsNotNullOrWhiteSpace extension methods for string arguments and a adds a WithExceptionOnFailure<TException>() method on the Condition class which allows users to specify the type of exception that will be thrown. Fo...patterns & practices: Project Silk: Project Silk Community Drop 12 - June 22, 2011: Changes from previous drop: Minor code changes. New "Introduction" chapter. New "Modularity" chapter. Updated "Architecture" chapter. Updated "Server-Side Implementation" chapter. Updated "Client Data Management and Caching" chapter. Guidance Chapters Ready for Review The Word documents for the chapters are included with the source code in addition to the CHM to help you provide feedback. The PDF is provided as a separate download for your convenience. Installation Overview To ins...DotNetNuke® Community Edition: 06.00.00 Beta: Beta 1 (Build 2300) includes many important enhancements to the user experience. The control panel has been updated for easier access to the most important features and additional forms have been adapted to the new pattern. This release also includes many bug fixes that make it more stable than previous CTP releases. Beta ForumsAcDown????? - Anime&Comic Downloader: AcDown????? v3.0 Beta7: ??AcDown???????????????,?????????????????????。????????????????????,??Acfun、Bilibili、???、???、?????,???????????、???????。 AcDown???????????????????????????,???,???????????????????。 AcDown???????C#??,?????"Acfun?????"。 ????32??64? Windows XP/Vista/7 ????????????? ??:????????Windows XP???,?????????.NET Framework 2.0???(x86)?.NET Framework 2.0???(x64),?????"?????????"??? ??????????????,??????????: ??"AcDown?????"????????? ??v3.0 Beta7 ????????????? ???? ?? ????????????????? "??????"?????"?...New Projects.Net Micro Framework Contrib Library: Contrib library for the .Net Micro Framework..NET Notepad: this is my version of notepadAntLifeISEN: Projet de Découverte MISN P54 Simulation du comportement des fourmisApuracao AG: Estudos asp.net com MCV3apuracaoIK: estudos asp.net desenvolvimento manual;Bikirom BikiSoft: BikiRom BikiSoft windows interface to the BikiRom Megaboard series of real-time ecu retuning hardware.BlogSource: Blog Source.Carmilla Learning: Lessons for Camille Dollé, sup in Epita.Debug Single Thread: This Visual Studio 2010 extension adds two shortcuts and toolbar buttons to allow developers to easily focus on single threads while debugging multi-threaded applications. It dramatically reduces the need to manually go into the Threads window to freeze/thaw all threads but the one that needs to be followed, and therefore helps improve productivity. Features: - Restrict further execution to the current thread only. Will freeze all other threads. Shortcut: CTRL+T+T or snowflake button. -...Excel Viewer: Excel Viewer is a .net component that allows programmers to load excel application and also excel spreadsheets in our windows form. This component is useful for viewing excel reports in applications. This component is written in C# 2.0.Image Processor: The Image Processor in C#jQuery Mobile Extensions for ASP.Net MVC: jQMvc is a collection of extensions built on jQuery Mobile (currently in beta) that can be used with ASP.Net MVC to produce HTML5 based mobile applications. With jQMvc we'll be able to do the neat and powerful MVC stuff but for the emerging world of mobile HTML5 applications.just Think: This is about how to use ***** data for make a application on *****.Kinkuma Framework F# (Prism based F# MVVM Support Library): Kinkuma Framework?????F#?ViewModel?Model??????????????????????。Leuphana MyStudy Mobile: MyStudy schedule at your finger tips. Brings your Leuphana MyStudy schedule to your windows phone 7.maxtor1234test: this is my testMayhemModules: This project contains the modules from the Mayhem repository.PlaOrganizer: PLA Organizer helps create and manage playlist that is based on the PLA format. PowerSys: My Super PowerSystemSilverlight out-of-browser Contoso Dashboard: This is a small demonstration of the capabilities of Silverlight's out of browser mode. This projet includes : - Notification Windows - Unrestricted access to network (netTcpBinding) - Automatic updates (provided that you create your own trusted certificate) - Excel and Outlook Interop - Access to file system - Fullscreen modeSimple Binding Framework: Simple binding frameworkSimply BackUp Tool: A simple tool for backing up personal folders that is built in .Net with WPF. The tool will be updated for using latest techniques and technologies. In partnership with: http://www.ganahtech.comSoftware Botany Ivy - String Utils with CSV, Delimited, & Positional Text Parser: The Software Botany Ivy project is a library containing various string utilities. Included in the library are fluent APIs for parsing and creating delimited and fixed width positional text. Quoted CSV is supported. The library is built on .NET 4.0 using the C# language.Software Botany Sunlight - Word Aligned Hybrid Bit Vector Search Framework: The Software Botany Sunlight project is a search framework built using Word Aligned Hybrid Bit Vectors. Its sole purpose is to provide high performance in-memory searching of data using unknown combinations of indices. It is developed with .NET 4.0 using C#.Torrent file parsing, editing, and writing library: A fully functional library for reading and parsing bencode'd files (ie .torrent) into a fully editable DOM. Work with custom bencode'd file formats, or use strongly typed torrent file reading, modification, and writing. Written in C#.Tweeting Attendant: The Tweeting Attendant is a project created for the Adafruit Make It Tweet Challenge.UBL Larsen: UBL Larsen is a C# .NET 4.0 Class Library for reading/writing Universal Business Language (UBL) xml documents. No xml parsing is required. XmlSerializer will take care of the streaming for you. The library is custom generated from the "UBL 2.0 updated" xsd files to resemble the layout of the Oasis xsd file hierarchy. Some optimizations have been made in order to improve streaming speed and ease the job of for the developer. All of the types in Common Basic Components have been replaced. O...WenbianAsk: Ask system using WPF WP7 Transfer Data Tool: This tool is used to transfer data from PC to WP7. ???????: ?????

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  • The case of the phantom ADF developer (and other yarns)

    - by Chris Muir
    A few years of ADF experience means I see common mistakes made by different developers, some I regularly make myself.  This post is designed to assist beginners to Oracle JDeveloper Application Development Framework (ADF) avoid a common ADF pitfall, the case of the phantom ADF developer [add Scooby-Doo music here]. ADF Business Components - triggers, default table values and instead of views. Oracle's JDeveloper tutorials help with the A-B-Cs of ADF development, typically built on the nice 'n safe demo schema provided by with the Oracle database such as the HR demo schema. However it's not too long until ADF beginners, having built up some confidence from learning with the tutorials and vanilla demo schemas, start building ADF Business Components based upon their own existing database schema objects.  This is where unexpected problems can sneak in. The crime Developers may encounter a surprising error at runtime when editing a record they just created or updated and committed to the database, based on their own existing tables, namely the error: JBO-25014: Another user has changed the row with primary key oracle.jbo.Key[x] ...where X is the primary key value of the row at hand.  In a production environment with multiple users this error may be legit, one of the other users has updated the row since you queried it.  Yet in a development environment this error is just plain confusing.  If developers are isolated in their own database, creating and editing records they know other users can't possibly be working with, or all the other developers have gone home for the day, how is this error possible? There are no other users?  It must be the phantom ADF developer! [insert dramatic music here] The following picture is what you'll see in the Business Component Browser, and you'll receive a similar error message via an ADF Faces page: A false conclusion What can possibly cause this issue if it isn't our phantom ADF developer?  Doesn't ADF BC implement record locking, locking database records when the row is modified in the ADF middle-tier by a user?  How can our phantom ADF developer even take out a lock if this is the case?  Maybe ADF has a bug, maybe ADF isn't implementing record locking at all?  Shouldn't we see the error "JBO-26030: Failed to lock the record, another user holds the lock" as we attempt to modify the record, why do we see JBO-25014? : Let's verify that ADF is in fact issuing the correct SQL LOCK-FOR-UPDATE statement to the database. First we need to verify ADF's locking strategy.  It is determined by the Application Module's jbo.locking.mode property.  The default (as of JDev 11.1.1.4.0 if memory serves me correct) and recommended value is optimistic, and the other valid value is pessimistic. Next we need a mechanism to check that ADF is issuing the LOCK statements to the database.  We could ask DBAs to monitor locks with OEM, but optimally we'd rather not involve overworked DBAs in this process, so instead we can use the ADF runtime setting –Djbo.debugoutput=console.  At runtime this options turns on instrumentation within the ADF BC layer, which among a lot of extra detail displayed in the log window, will show the actual SQL statement issued to the database, including the LOCK statement we're looking to confirm. Setting our locking mode to pessimistic, opening the Business Components Browser of a JSF page allowing us to edit a record, say the CHARGEABLE field within a BOOKINGS record where BOOKING_NO = 1206, upon editing the record see among others the following log entries: [421] Built select: 'SELECT BOOKING_NO, EVENT_NO, RESOURCE_CODE, CHARGEABLE, MADE_BY, QUANTITY, COST, STATUS, COMMENTS FROM BOOKINGS Bookings'[422] Executing LOCK...SELECT BOOKING_NO, EVENT_NO, RESOURCE_CODE, CHARGEABLE, MADE_BY, QUANTITY, COST, STATUS, COMMENTS FROM BOOKINGS Bookings WHERE BOOKING_NO=:1 FOR UPDATE NOWAIT[423] Where binding param 1: 1206  As can be seen on line 422, in fact a LOCK-FOR-UPDATE is indeed issued to the database.  Later when we commit the record we see: [441] OracleSQLBuilder: SAVEPOINT 'BO_SP'[442] OracleSQLBuilder Executing, Lock 1 DML on: BOOKINGS (Update)[443] UPDATE buf Bookings>#u SQLStmtBufLen: 210, actual=62[444] UPDATE BOOKINGS Bookings SET CHARGEABLE=:1 WHERE BOOKING_NO=:2[445] Update binding param 1: N[446] Where binding param 2: 1206[447] BookingsView1 notify COMMIT ... [448] _LOCAL_VIEW_USAGE_model_Bookings_ResourceTypesView1 notify COMMIT ... [449] EntityCache close prepared statement ....and as a result the changes are saved to the database, and the lock is released. Let's see what happens when we use the optimistic locking mode, this time to change the same BOOKINGS record CHARGEABLE column again.  As soon as we edit the record we see little activity in the logs, nothing to indicate any SQL statement, let alone a LOCK has been taken out on the row. However when we save our records by issuing a commit, the following is recorded in the logs: [509] OracleSQLBuilder: SAVEPOINT 'BO_SP'[510] OracleSQLBuilder Executing doEntitySelect on: BOOKINGS (true)[511] Built select: 'SELECT BOOKING_NO, EVENT_NO, RESOURCE_CODE, CHARGEABLE, MADE_BY, QUANTITY, COST, STATUS, COMMENTS FROM BOOKINGS Bookings'[512] Executing LOCK...SELECT BOOKING_NO, EVENT_NO, RESOURCE_CODE, CHARGEABLE, MADE_BY, QUANTITY, COST, STATUS, COMMENTS FROM BOOKINGS Bookings WHERE BOOKING_NO=:1 FOR UPDATE NOWAIT[513] Where binding param 1: 1205[514] OracleSQLBuilder Executing, Lock 2 DML on: BOOKINGS (Update)[515] UPDATE buf Bookings>#u SQLStmtBufLen: 210, actual=62[516] UPDATE BOOKINGS Bookings SET CHARGEABLE=:1 WHERE BOOKING_NO=:2[517] Update binding param 1: Y[518] Where binding param 2: 1205[519] BookingsView1 notify COMMIT ... [520] _LOCAL_VIEW_USAGE_model_Bookings_ResourceTypesView1 notify COMMIT ... [521] EntityCache close prepared statement Again even though we're seeing the midtier delay the LOCK statement until commit time, it is in fact occurring on line 412, and released as part of the commit issued on line 419.  Therefore with either optimistic or pessimistic locking a lock is indeed issued. Our conclusion at this point must be, unless there's the unlikely cause the LOCK statement is never really hitting the database, or the even less likely cause the database has a bug, then ADF does in fact take out a lock on the record before allowing the current user to update it.  So there's no way our phantom ADF developer could even modify the record if he tried without at least someone receiving a lock error. Hmm, we can only conclude the locking mode is a red herring and not the true cause of our problem.  Who is the phantom? At this point we'll need to conclude that the error message "JBO-25014: Another user has changed" is somehow legit, even though we don't understand yet what's causing it. This leads onto two further questions, how does ADF know another user has changed the row, and what's been changed anyway? To answer the first question, how does ADF know another user has changed the row, the Fusion Guide's section 4.10.11 How to Protect Against Losing Simultaneous Updated Data , that details the Entity Object Change-Indicator property, gives us the answer: At runtime the framework provides automatic "lost update" detection for entity objects to ensure that a user cannot unknowingly modify data that another user has updated and committed in the meantime. Typically, this check is performed by comparing the original values of each persistent entity attribute against the corresponding current column values in the database at the time the underlying row is locked. Before updating a row, the entity object verifies that the row to be updated is still consistent with the current state of the database.  The guide further suggests to make this solution more efficient: You can make the lost update detection more efficient by identifying any attributes of your entity whose values you know will be updated whenever the entity is modified. Typical candidates include a version number column or an updated date column in the row.....To detect whether the row has been modified since the user queried it in the most efficient way, select the Change Indicator option to compare only the change-indicator attribute values. We now know that ADF BC doesn't use the locking mechanism at all to protect the current user against updates, but rather it keeps a copy of the original record fetched, separate to the user changed version of the record, and it compares the original record against the one in the database when the lock is taken out.  If values don't match, be it the default compare-all-columns behaviour, or the more efficient Change Indicator mechanism, ADF BC will throw the JBO-25014 error. This leaves one last question.  Now we know the mechanism under which ADF identifies a changed row, what we don't know is what's changed and who changed it? The real culprit What's changed?  We know the record in the mid-tier has been changed by the user, however ADF doesn't use the changed record in the mid-tier to compare to the database record, but rather a copy of the original record before it was changed.  This leaves us to conclude the database record has changed, but how and by who? There are three potential causes: Database triggers The database trigger among other uses, can be configured to fire PLSQL code on a database table insert, update or delete.  In particular in an insert or update the trigger can override the value assigned to a particular column.  The trigger execution is actioned by the database on behalf of the user initiating the insert or update action. Why this causes the issue specific to our ADF use, is when we insert or update a record in the database via ADF, ADF keeps a copy of the record written to the database.  However the cached record is instantly out of date as the database triggers have modified the record that was actually written to the database.  Thus when we update the record we just inserted or updated for a second time to the database, ADF compares its original copy of the record to that in the database, and it detects the record has been changed – giving us JBO-25014. This is probably the most common cause of this problem. Default values A second reason this issue can occur is another database feature, default column values.  When creating a database table the schema designer can define default values for specific columns.  For example a CREATED_BY column could be set to SYSDATE, or a flag column to Y or N.  Default values are only used by the database when a user inserts a new record and the specific column is assigned NULL.  The database in this case will overwrite the column with the default value. As per the database trigger section, it then becomes apparent why ADF chokes on this feature, though it can only specifically occur in an insert-commit-update-commit scenario, not the update-commit-update-commit scenario. Instead of trigger views I must admit I haven't double checked this scenario but it seems plausible, that of the Oracle database's instead of trigger view (sometimes referred to as instead of views).  A view in the database is based on a query, and dependent on the queries complexity, may support insert, update and delete functionality to a limited degree.  In order to support fully insertable, updateable and deletable views, Oracle introduced the instead of view, that gives the view designer the ability to not only define the view query, but a set of programmatic PLSQL triggers where the developer can define their own logic for inserts, updates and deletes. While this provides the database programmer a very powerful feature, it can cause issues for our ADF application.  On inserting or updating a record in the instead of view, the record and it's data that goes in is not necessarily the data that comes out when ADF compares the records, as the view developer has the option to practically do anything with the incoming data, including throwing it away or pushing it to tables which aren't used by the view underlying query for fetching the data. Readers are at this point reminded that this article is specifically about how the JBO-25014 error occurs in the context of 1 developer on an isolated database.  The article is not considering how the error occurs in a production environment where there are multiple users who can cause this error in a legitimate fashion.  Assuming none of the above features are the cause of the problem, and optimistic locking is turned on (this error is not possible if pessimistic locking is the default mode *and* none of the previous causes are possible), JBO-25014 is quite feasible in a production ADF application if 2 users modify the same record. At this point under project timelines pressure, the obvious fix for developers is to drop both database triggers and default values from the underlying tables.  However we must be careful that these legacy constructs aren't used and assumed to be in place by other legacy systems.  Dropping the database triggers or default value that the existing Oracle Forms  applications assumes and requires to be in place could cause unexpected behaviour and bugs in the Forms application.  Proficient software engineers would recognize such a change may require a partial or full regression test of the existing legacy system, a potentially costly and timely exercise, not ideal. Solving the mystery once and for all Luckily ADF has built in functionality to deal with this issue, though it's not a surprise, as Oracle as the author of ADF also built the database, and are fully aware of the Oracle database's feature set.  At the Entity Object attribute level, the Refresh After Insert and Refresh After Update properties.  Simply selecting these instructs ADF BC after inserting or updating a record to the database, to expect the database to modify the said attributes, and read a copy of the changed attributes back into its cached mid-tier record.  Thus next time the developer modifies the current record, the comparison between the mid-tier record and the database record match, and JBO-25014: Another user has changed" is no longer an issue. [Post edit - as per the comment from Oracle's Steven Davelaar below, as he correctly points out the above solution will not work for instead-of-triggers views as it relies on SQL RETURNING clause which is incompatible with this type of view] Alternatively you can set the Change Indicator on one of the attributes.  This will work as long as the relating column for the attribute in the database itself isn't inadvertently updated.  In turn you're possibly just masking the issue rather than solving it, because if another developer turns the Change Indicator back on the original issue will return.

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  • CodePlex Daily Summary for Saturday, April 14, 2012

    CodePlex Daily Summary for Saturday, April 14, 2012Popular ReleasesJson.NET: Json.NET 4.5 Release 3: Change - DefaultContractResolver.IgnoreSerializableAttribute is now true by default Fix - Fixed MaxDepth on JsonReader recursively throwing an error Fix - Fixed SerializationBinder.BindToName not being called with full assembly namesVisual Studio Team Foundation Server Branching and Merging Guide: v2 - For Visual Studio 11: Welcome to the BETA of the Branching and Merging Guide preview As this is a BETA release and the quality bar for the final Release has not been achieved, we value your candid feedback and recommend that you do not use or deploy these BETA artifacts in a production environment. Quality-Bar Details Documentation has been reviewed by Visual Studio ALM Rangers Documentation has not been through an independent technical review Documentation has been reviewed by the quality and recording te...Media Companion: MC 3.435b Release: This release should be the last beta for 3.4xx. A handful of problems have been sorted out since last weeks release. If there are no major problems this time, it will upgraded to 3.500 Stable at the end of the week! General The .NET Framework has been modified to use the Client profile, as provided by normal Windows updates; no longer is there a requirement to download and install the Full profile! mc_com.exe has been worked on to mimic proper Media Companion output (a big thanks to vbat99...THE NVL Maker: The NVL Maker Ver 3.12: SIM??????,TRA??????,ZIP????。 ????????????????,??????~(??????????????????) ??????? simpatch1440x900 trapatch1440x900 ?????1400x900??1440x900,?????????????Data.xp3。 ???? ?????3.12?EXE????????????????, ??????????????,??Tool/krkrconf.exe,??Editor.exe, ???????????????「??????」。 ?????Editor.exe??????。 ???? ???? http://etale.us/gameupload/THE_NVL_Maker_ver3.12_sim.zip ???? http://www.mediafire.com/?je51683g22bz8vo ??Infinite Creation?? http://bbs.etale.us/forum.php ?????? ???? 3.12 ??? ???、????...SnmpMessenger: 0.1.1.1: Project Description SnmpMessenger, a messenger. Using the SNMP protocol to exchange messages. It's developed in C#. SnmpMessenger For .Net 4.0, Mono 2.8. Support SNMP V1, V2, V3. Features Send get, set and other requests and get the response. Send and receive traps. Handle requests and return the response. Note This library is compliant with the Common Language Specification(CLS). The latest version is 0.1.1.1. It is only a messenger, does not involve VACM. Any problems, Please mailto: wa...Python Tools for Visual Studio: 1.1.1: We’re pleased to announce the release of Python Tools for Visual Studio 1.1.1. Python Tools for Visual Studio (PTVS) is an open-source plug-in for Visual Studio which supports programming with the Python language. PTVS supports a broad range of features including: • Supports CPython and IronPython • Python editor with advanced member and signature intellisense • Code navigation: “Find all refs”, goto definition, and object browser • Local and remote debugging • Profiling with multiple view...Supporting Guidance and Whitepapers: v1 - Team Foundation Service Whitepapers: Welcome to the BETA release of the Team Foundation Service Whitepapers preview As this is a BETA release and the quality bar for the final Release has not been achieved, we value your candid feedback and recommend that you do not use or deploy these BETA artifacts in a production environment. Quality-Bar Details Documentation has been reviewed by Visual Studio ALM Rangers Documentation has been through an independent technical review All critical bugs have been resolved Known Issue...Microsoft .NET Gadgeteer: .NET Gadgeteer Core 2.42.550 (BETA): Microsoft .NET Gadgeteer Core RELEASE NOTES Version 2.42.550 11 April 2012 BETA VERSION WARNING: This is a beta version! Please note: - API changes may be made before the next version (2.42.600) - The designer will not show modules/mainboards for NETMF 4.2 until you get upgraded libraries from the module/mainboard vendors - Install NETMF 4.2 (see link below) to use the new features of this release That warning aside, this version should continue to sup...LINQ to Twitter: LINQ to Twitter Beta v2.0.24: Supports .NET 3.5, .NET 4.0, Silverlight 4.0, Windows Phone 7.1, and Client Profile. 100% Twitter API coverage. Also available via NuGet.Kendo UI ASP.NET Sample Applications: Sample Applications (2012-04-11): Sample application(s) demonstrating the use of Kendo UI in ASP.NET applications.SCCM Client Actions Tool: SCCM Client Actions Tool v1.12: SCCM Client Actions Tool v1.12 is the latest version. It comes with following changes since last version: Improved WMI date conversion to be aware of timezone differences and DST. Fixed new version check. The tool is downloadable as a ZIP file that contains four files: ClientActionsTool.hta – The tool itself. Cmdkey.exe – command line tool for managing cached credentials. This is needed for alternate credentials feature when running the HTA on Windows XP. Cmdkey.exe is natively availab...Dual Browsing: Dual Browser: Please note the following: I setup the address bar temporarily to only accepts http:// .com addresses. Just type in the name of the website excluding: http://, www., and .com; (Ex: for www.youtube.com just type: youtube then click OK). The page splitter can be grabbed by holding down your left mouse button and move left or right. By right clicking on the page background, you can choose to refresh, go back a page and so on. Demo video: http://youtu.be/L7NTFVM3JUYCslaGenFork: Rules sample v.1.1.0: On projects for CSLA v.4.2.2, added 5 new Business Rules: - DependencyFrom - RequiredWhenCanWrite - RequiredWhenIsNotNew - RequiredWhenNew - StopIfNotFieldExists Added new projects for CSLA v.4.3.10 with 6 new Business Rules: - DependencyFrom - FieldExists - RequiredWhenCanWrite - RequiredWhenIsNotNew - RequiredWhenNew - StopIfNotFieldExists Following CSLA convention, SL stands for Silverligth 5 and SL4 stands for Silverlight 4. NOTE - Although the projects for CSLA v.4.1.0 still exist, thi...Multiwfn: Multiwfn 2.3.3: Multiwfn 2.3.3Liberty: v3.2.0.1 Release 9th April 2012: Change Log-Fixed -Reach Fixed a bug where the object editor did not work on non-English operating systemsCommonData - Common Functions for ASP.NET projects: CommonData 0.3L: Common Data has been updated to the latest NUnit (2.6.0) The demo project has been updated with an example on how to correctly compare a floating point value.ASP.Net MVC Dynamic JS/CSS Script Compression Framework: Initial Stable: Initial Stable Version Contains Source for Compression Library and example for usage in web application.Path Copy Copy: 10.1: This release addresses the following work items: 11357 11358 11359 This release is a recommended upgrade, especially for users who didn't install the 10.0.1 version.ExtAspNet: ExtAspNet v3.1.3: ExtAspNet - ?? ExtJS ??? ASP.NET 2.0 ???,????? AJAX ?????????? ExtAspNet ????? ExtJS ??? ASP.NET 2.0 ???,????? AJAX ??????????。 ExtAspNet ??????? JavaScript,?? CSS,?? UpdatePanel,?? ViewState,?? WebServices ???????。 ??????: IE 7.0, Firefox 3.6, Chrome 3.0, Opera 10.5, Safari 3.0+ ????:Apache License 2.0 (Apache) ??:http://extasp.net/ ??:http://bbs.extasp.net/ ??:http://extaspnet.codeplex.com/ ??:http://sanshi.cnblogs.com/ ????: +2012-04-08 v3.1.3 -??Language="zh_TW"?JS???BUG(??)。 +?D...Coding4Fun Tools: Coding4Fun.Phone.Toolkit v1.5.5: New Controls ChatBubble ChatBubbleTextBox OpacityToggleButton New Stuff TimeSpan languages added: RU, SK, CS Expose the physics math from TimeSpanPicker Image Stretch now on buttons Bug Fixes Layout fix so RoundToggleButton and RoundButton are exactly the same Fix for ColorPicker when set via code behind ToastPrompt bug fix with OnNavigatedTo Toast now adjusts its layout if the SIP is up Fixed some issues with Expression Blend supportNew ProjectsArkadia Operating System: This operating system is based on Cosmos Project and C# Programming Langage.Copy Microsoft Online User Attributes from one domain user to another: CopyMSOLAttributes copies MSOL-specific user attributes from source user to target user (legacyExchangeDN, mail, msExchMailboxGuid, proxyAddresses, targetAddress). This assists in migrating to Office 365 in a multi-domain, multi-forest environment.DevChat: DevChat is a small secure chat for dev groups or teams inside of an organisation that wish to control their information.Dynamic UI Framework: Dynamic UI FrameworkEjemploAndroid: Prueba Trabajar con eclipse y codeplexElfos vs Orcos: videojuego xna elfos vs orcosFacebook Suite Rules Orchard module: Part of the Facebook Suite Orchard module that provides various rules for the Rules engine to interact with Facebook.FakeMail: FakeMail makes testing of email enabled applications easier for DEVs and QAs. You no longer need to have multiple "real" email addresses to test and validate registration and notification features. Written in C# this ASP.Net MVC application uses RavenDB Embedded as a document store and hosts a custom SMTP server. Configure FakeMail and update your existing email-enabled application's SMTP server settings are you are ready to go. FakeMail mail server will accept email sent to ANY addre...FIM Object Visualizer: The FIM Object Visualizer is a tool to display and document configurable FIM objects such as Synchronization Rules, Workflows and Management Policy Rules. FXIB: ThisGoogle Places Autocomplete API for WP7: The Google Places Autocomplete API for WP7 is a project for WP7 developers to use when implementing an autocomplete box in their application. This project provides an easy non-blocking way to get fast results from the Google Places Autocomplete API. hook send/recv function with CreateRemoteThread: this sample is hooking send/recv function with CreateRemoteThread api.Infinity Music: Entertainment center, music player, youtube player, Internet radio, Facebook, Twitter ... All in one application ...! Centro de entretenimiento, reproductor de música, reproductor videos you tube, radio por internet, Facebook, Twitter... Todo en una misma aplicación...! Centre de divertissement, lecteur de musique, lecteur YouTube, la radio sur Internet, Facebook, Twitter ... Tout dans une seule application ...!Library Guard: Library Guard helps you maintain your media library(primarily audio) by correcting tags, maintaining location of your files, etc.MVVM Source Control Monitor: An exercise in MVVM with Wpf to create a useful and unobtrusive source control notification tool that lives in the system tray, and can also be viewed in a window. This is meant to provide a 'real world' application to provide examples of MVVM implementation without understanding any other frameworks that can blur the lines about what MVVM really is (it's a pattern, folks). The application will use as little 3rd party code as possible (Wpf Toolkit, some other goodies) that are all unrel...Orchard Calendar: Module provides calendar capabilities in Orchard. This is accomplished by a new calendar content part and content type along with new calendar layout for Projector module. PaidRanks: PaidRanks makes it easier for minecraft admins to mangae user rights and rewards donators. You'll no longer have to manually change nick names again. It's developed in Java 7.Perritos Project: Practice of the subject projectPython Pygame Sprites Example: This project example uses Python and Pygame to create a game environment. This code requires major refactoring and there is no warranty. Reversi.NET: Reversi is a board game involving abstract strategy and played by two players on a board with 8 rows and 8 columns and a set of distinct pieces for each side.SharePoint Social Tag Counters: The SharePoint Social Tag Counter project takes the social features from SharePoint 2010 to another level. It allows you to immediately show your SharePoint visitors how popular the content is with the help of Social "I like it" and "Tag" counters.Shop systems1: dddddddddddSource Block - Data Access Components: Source Block - Data Access Components Contains two components. 1. DBHandler 2. DBSchemaHandler DBHandler : Pure ADO.Net based Data access layer DBSchemaHandler : Pure ADO.Net based Database schema handlerSource Block - Domain Driven Development Framework: A framework which promotes domain pattern based development. This promotes patterns such as : Repository, Unit of work, Dependency injection and Inversion of control. Built on MS E.F 4.2 using code first approach. Includes features such as code generationSuperSocket Proxy Server: A .NET proxy server based on SuperSocketTestC-Q: This project is on working with KDB database and fetching data from open market data providers. This will do rigorous analysis. Don't try to find any code till Oct 2012.tofinish: tofinishUse National Geographic Photo of the Day as Wallpaper: I used to watch National Geographic Photo of the day everyday. http://photography.nationalgeographic.com/photography/photo-of-the-day So I thought it might be helpful for people like me if a software synchronise the wallpaper with national geographic photo of the day. It also archives photo of the day along with publication date and photo title.VAMP: Projet industriel MBDS 2012?????: ???????Model???????: ????:??Model??????? ???:??? ??:?????????python?SDK: ??python??????SDK。????

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  • DevConnections Session Slides, Samples and Links

    - by Rick Strahl
    Finally coming up for air this week, after catching up with being on the road for the better part of three weeks. Here are my slides, samples and links for my four DevConnections Session two weeks ago in Vegas. I ended up doing one extra un-prepared for session on WebAPI and AJAX, as some of the speakers were either delayed or unable to make it at all to Vegas due to Sandy's mayhem. It was pretty hectic in the speaker room as Erik (our event coordinator extrodinaire) was scrambling to fill session slots with speakers :-). Surprisingly it didn't feel like the storm affected attendance drastically though, but I guess it's hard to tell without actual numbers. The conference was a lot of fun - it's been a while since I've been speaking at one of these larger conferences. I'd been taking a hiatus, and I forgot how much I enjoy actually giving talks. Preparing - well not  quite so much, especially since I ended up essentially preparing or completely rewriting for all three of these talks and I was stressing out a bit as I was sick the week before the conference and didn't get as much time to prepare as I wanted to. But - as always seems to be the case - it all worked out, but I guess those that attended have to be the judge of that… It was great to catch up with my speaker friends as well - man I feel out of touch. I got to spend a bunch of time with Dan Wahlin, Ward Bell, Julie Lerman and for about 10 minutes even got to catch up with the ever so busy Michele Bustamante. Lots of great technical discussions including a fun and heated REST controversy with Ward and Howard Dierking. There were also a number of great discussions with attendees, describing how they're using the technologies touched in my talks in live applications. I got some great ideas from some of these and I wish there would have been more opportunities for these kinds of discussions. One thing I miss at these Vegas events though is some sort of coherent event where attendees and speakers get to mingle. These Vegas conferences are just like "go to sessions, then go out and PARTY on the town" - it's Vegas after all! But I think that it's always nice to have at least one evening event where everybody gets to hang out together and trade stories and geek talk. Overall there didn't seem to be much opportunity for that beyond lunch or the small and short exhibit hall events which it seemed not many people actually went to. Anyways, a good time was had. I hope those of you that came to my sessions learned something useful. There were lots of great questions and discussions after the sessions - always appreciate hearing the real life scenarios that people deal with in relation to the abstracted scenarios in sessions. Here are the Session abstracts, a few comments and the links for downloading slides and  samples. It's not quite like being there, but I hope this stuff turns out to be useful to some of you. I'll be following up a couple of these sessions with white papers in the following weeks. Enjoy. ASP.NET Architecture: How ASP.NET Works at the Low Level Abstract:Interested in how ASP.NET works at a low level? ASP.NET is extremely powerful and flexible technology, but it's easy to forget about the core framework that underlies the higher level technologies like ASP.NET MVC, WebForms, WebPages, Web Services that we deal with on a day to day basis. The ASP.NET core drives all the higher level handlers and frameworks layered on top of it and with the core power comes some complexity in the form of a very rich object model that controls the flow of a request through the ASP.NET pipeline from Windows HTTP services down to the application level. To take full advantage of it, it helps to understand the underlying architecture and model. This session discusses the architecture of ASP.NET along with a number of useful tidbits that you can use for building and debugging your ASP.NET applications more efficiently. We look at overall architecture, how requests flow from the IIS (7 and later) Web Server to the ASP.NET runtime into HTTP handlers, modules and filters and finally into high-level handlers like MVC, Web Forms or Web API. Focus of this session is on the low-level aspects on the ASP.NET runtime, with examples that demonstrate the bootstrapping of ASP.NET, threading models, how Application Domains are used, startup bootstrapping, how configuration files are applied and how all of this relates to the applications you write either using low-level tools like HTTP handlers and modules or high-level pages or services sitting at the top of the ASP.NET runtime processing chain. Comments:I was surprised to see so many people show up for this session - especially since it was the last session on the last day and a short 1 hour session to boot. The room was packed and it was to see so many people interested the abstracts of architecture of ASP.NET beyond the immediate high level application needs. Lots of great questions in this talk as well - I only wish this session would have been the full hour 15 minutes as we just a little short of getting through the main material (didn't make it to Filters and Error handling). I haven't done this session in a long time and I had to pretty much re-figure all the system internals having to do with the ASP.NET bootstrapping in light for the changes that came with IIS 7 and later. The last time I did this talk was with IIS6, I guess it's been a while. I love doing this session, mainly because in my mind the core of ASP.NET overall is so cleanly designed to provide maximum flexibility without compromising performance that has clearly stood the test of time in the 10 years or so that .NET has been around. While there are a lot of moving parts, the technology is easy to manage once you understand the core components and the core model hasn't changed much even while the underlying architecture that drives has been almost completely revamped especially with the introduction of IIS 7 and later. Download Samples and Slides   Introduction to using jQuery with ASP.NET Abstract:In this session you'll learn how to take advantage of jQuery in your ASP.NET applications. Starting with an overview of jQuery client features via many short and fun examples, you'll find out about core features like the power of selectors for document element selection, manipulating these elements with jQuery's wrapped set methods in a browser independent way, how to hook up and handle events easily and generally apply concepts of unobtrusive JavaScript principles to client scripting. The second half of the session then delves into jQuery's AJAX features and several different ways how you can interact with ASP.NET on the server. You'll see examples of using ASP.NET MVC for serving HTML and JSON AJAX content, as well as using the new ASP.NET Web API to serve JSON and hypermedia content. You'll also see examples of client side templating/databinding with Handlebars and Knockout. Comments:This session was in a monster of a room and to my surprise it was nearly packed, given that this was a 100 level session. I can see that it's a good idea to continue to do intro sessions to jQuery as there appeared to be quite a number of folks who had not worked much with jQuery yet and who most likely could greatly benefit from using it. Seemed seemed to me the session got more than a few people excited to going if they hadn't yet :-).  Anyway I just love doing this session because it's mostly live coding and highly interactive - not many sessions that I can build things up from scratch and iterate on in an hour. jQuery makes that easy though. Resources: Slides and Code Samples Introduction to jQuery White Paper Introduction to ASP.NET Web API   Hosting the Razor Scripting Engine in Your Own Applications Abstract:The Razor Engine used in ASP.NET MVC and ASP.NET Web Pages is a free-standing scripting engine that can be disassociated from these Web-specific implementations and can be used in your own applications. Razor allows for a powerful mix of code and text rendering that makes it a wonderful tool for any sort of text generation, from creating HTML output in non-Web applications, to rendering mail merge-like functionality, to code generation for developer tools and even as a plug-in scripting engine. In this session, we'll look at the components that make up the Razor engine and how you can bootstrap it in your own applications to hook up templating. You'll find out how to create custom templates and manage Razor requests that can be pre-compiled, detecting page changes and act in ways similar to a full runtime. We look at ways that you can pass data into the engine and retrieve both the rendered output as well as result values in a package that makes it easy to plug Razor into your own applications. Comments:That this session was picked was a bit of a surprise to me, since it's a bit of a niche topic. Even more of a surprise was that during the session quite a few people who attended had actually used Razor externally and were there to find out more about how the process works and how to extend it. In the session I talk a bit about a custom Razor hosting implementation (Westwind.RazorHosting) and drilled into the various components required to build a custom Razor Hosting engine and a runtime around it. This sessions was a bit of a chore to prepare for as there are lots of technical implementation details that needed to be dealt with and squeezing that into an hour 15 is a bit tight (and that aren't addressed even by some of the wrapper libraries that exist). Found out though that there's quite a bit of interest in using a templating engine outside of web applications, or often side by side with the HTML output generated by frameworks like MVC or WebForms. An extra fun part of this session was that this was my first session and when I went to set up I realized I forgot my mini-DVI to VGA adapter cable to plug into the projector in my room - 6 minutes before the session was about to start. So I ended up sprinting the half a mile + back to my room - and back at a full sprint. I managed to be back only a couple of minutes late, but when I started I was out of breath for the first 10 minutes or so, while trying to talk. Musta sounded a bit funny as I was trying to not gasp too much :-) Resources: Slides and Code Samples Westwind.RazorHosting GitHub Project Original RazorHosting Blog Post   Introduction to ASP.NET Web API for AJAX Applications Abstract:WebAPI provides a new framework for creating REST based APIs, but it can also act as a backend to typical AJAX operations. This session covers the core features of Web API as it relates to typical AJAX application development. We’ll cover content-negotiation, routing and a variety of output generation options as well as managing data updates from the client in the context of a small Single Page Application style Web app. Finally we’ll look at some of the extensibility features in WebAPI to customize and extend Web API in a number and useful useful ways. Comments:This session was a fill in for session slots not filled due MIA speakers stranded by Sandy. I had samples from my previous Web API article so decided to go ahead and put together a session from it. Given that I spent only a couple of hours preparing and putting slides together I was glad it turned out as it did - kind of just ran itself by way of the examples I guess as well as nice audience interactions and questions. Lots of interest - and also some confusion about when Web API makes sense. Both this session and the jQuery session ended up getting a ton of questions about when to use Web API vs. MVC, whether it would make sense to switch to Web API for all AJAX backend work etc. In my opinion there's no need to jump to Web API for existing applications that already have a good AJAX foundation. Web API is awesome for real externally consumed APIs and clearly defined application AJAX APIs. For typical application level AJAX calls, it's still a good idea, but ASP.NET MVC can serve most if not all of that functionality just as well. There's no need to abandon MVC (or even ASP.NET AJAX or third party AJAX backends) just to move to Web API. For new projects Web API probably makes good sense for isolation of AJAX calls, but it really depends on how the application is set up. In some cases sharing business logic between the HTML and AJAX interfaces with a single MVC API can be cleaner than creating two completely separate code paths to serve essentially the same business logic. Resources: Slides and Code Samples Sample Code on GitHub Introduction to ASP.NET Web API White Paper© Rick Strahl, West Wind Technologies, 2005-2012Posted in Conferences  ASP.NET   Tweet !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs"); (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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  • 3D Graphics with XNA Game Studio 4.0 bug in light map?

    - by Eibis
    i'm following the tutorials on 3D Graphics with XNA Game Studio 4.0 and I came up with an horrible effect when I tried to implement the Light Map http://i.stack.imgur.com/BUWvU.jpg this effect shows up when I look towards the center of the house (and it moves with me). it has this shape because I'm using a sphere to represent light; using other light shapes gives different results. I'm using a class PreLightingRenderer: using System; using System.Collections.Generic; using System.Linq; using System.Text; using Microsoft.Xna.Framework; using Microsoft.Xna.Framework.Graphics; using Dhpoware; using Microsoft.Xna.Framework.Content; namespace XNAFirstPersonCamera { public class PrelightingRenderer { // Normal, depth, and light map render targets RenderTarget2D depthTarg; RenderTarget2D normalTarg; RenderTarget2D lightTarg; // Depth/normal effect and light mapping effect Effect depthNormalEffect; Effect lightingEffect; // Point light (sphere) mesh Model lightMesh; // List of models, lights, and the camera public List<CModel> Models { get; set; } public List<PPPointLight> Lights { get; set; } public FirstPersonCamera Camera { get; set; } GraphicsDevice graphicsDevice; int viewWidth = 0, viewHeight = 0; public PrelightingRenderer(GraphicsDevice GraphicsDevice, ContentManager Content) { viewWidth = GraphicsDevice.Viewport.Width; viewHeight = GraphicsDevice.Viewport.Height; // Create the three render targets depthTarg = new RenderTarget2D(GraphicsDevice, viewWidth, viewHeight, false, SurfaceFormat.Single, DepthFormat.Depth24); normalTarg = new RenderTarget2D(GraphicsDevice, viewWidth, viewHeight, false, SurfaceFormat.Color, DepthFormat.Depth24); lightTarg = new RenderTarget2D(GraphicsDevice, viewWidth, viewHeight, false, SurfaceFormat.Color, DepthFormat.Depth24); // Load effects depthNormalEffect = Content.Load<Effect>(@"Effects\PPDepthNormal"); lightingEffect = Content.Load<Effect>(@"Effects\PPLight"); // Set effect parameters to light mapping effect lightingEffect.Parameters["viewportWidth"].SetValue(viewWidth); lightingEffect.Parameters["viewportHeight"].SetValue(viewHeight); // Load point light mesh and set light mapping effect to it lightMesh = Content.Load<Model>(@"Models\PPLightMesh"); lightMesh.Meshes[0].MeshParts[0].Effect = lightingEffect; this.graphicsDevice = GraphicsDevice; } public void Draw() { drawDepthNormalMap(); drawLightMap(); prepareMainPass(); } void drawDepthNormalMap() { // Set the render targets to 'slots' 1 and 2 graphicsDevice.SetRenderTargets(normalTarg, depthTarg); // Clear the render target to 1 (infinite depth) graphicsDevice.Clear(Color.White); // Draw each model with the PPDepthNormal effect foreach (CModel model in Models) { model.CacheEffects(); model.SetModelEffect(depthNormalEffect, false); model.Draw(Camera.ViewMatrix, Camera.ProjectionMatrix, Camera.Position); model.RestoreEffects(); } // Un-set the render targets graphicsDevice.SetRenderTargets(null); } void drawLightMap() { // Set the depth and normal map info to the effect lightingEffect.Parameters["DepthTexture"].SetValue(depthTarg); lightingEffect.Parameters["NormalTexture"].SetValue(normalTarg); // Calculate the view * projection matrix Matrix viewProjection = Camera.ViewMatrix * Camera.ProjectionMatrix; // Set the inverse of the view * projection matrix to the effect Matrix invViewProjection = Matrix.Invert(viewProjection); lightingEffect.Parameters["InvViewProjection"].SetValue(invViewProjection); // Set the render target to the graphics device graphicsDevice.SetRenderTarget(lightTarg); // Clear the render target to black (no light) graphicsDevice.Clear(Color.Black); // Set render states to additive (lights will add their influences) graphicsDevice.BlendState = BlendState.Additive; graphicsDevice.DepthStencilState = DepthStencilState.None; foreach (PPPointLight light in Lights) { // Set the light's parameters to the effect light.SetEffectParameters(lightingEffect); // Calculate the world * view * projection matrix and set it to // the effect Matrix wvp = (Matrix.CreateScale(light.Attenuation) * Matrix.CreateTranslation(light.Position)) * viewProjection; lightingEffect.Parameters["WorldViewProjection"].SetValue(wvp); // Determine the distance between the light and camera float dist = Vector3.Distance(Camera.Position, light.Position); // If the camera is inside the light-sphere, invert the cull mode // to draw the inside of the sphere instead of the outside if (dist < light.Attenuation) graphicsDevice.RasterizerState = RasterizerState.CullClockwise; // Draw the point-light-sphere lightMesh.Meshes[0].Draw(); // Revert the cull mode graphicsDevice.RasterizerState = RasterizerState.CullCounterClockwise; } // Revert the blending and depth render states graphicsDevice.BlendState = BlendState.Opaque; graphicsDevice.DepthStencilState = DepthStencilState.Default; // Un-set the render target graphicsDevice.SetRenderTarget(null); } void prepareMainPass() { foreach (CModel model in Models) foreach (ModelMesh mesh in model.Model.Meshes) foreach (ModelMeshPart part in mesh.MeshParts) { // Set the light map and viewport parameters to each model's effect if (part.Effect.Parameters["LightTexture"] != null) part.Effect.Parameters["LightTexture"].SetValue(lightTarg); if (part.Effect.Parameters["viewportWidth"] != null) part.Effect.Parameters["viewportWidth"].SetValue(viewWidth); if (part.Effect.Parameters["viewportHeight"] != null) part.Effect.Parameters["viewportHeight"].SetValue(viewHeight); } } } } that uses three effect: PPDepthNormal.fx float4x4 World; float4x4 View; float4x4 Projection; struct VertexShaderInput { float4 Position : POSITION0; float3 Normal : NORMAL0; }; struct VertexShaderOutput { float4 Position : POSITION0; float2 Depth : TEXCOORD0; float3 Normal : TEXCOORD1; }; VertexShaderOutput VertexShaderFunction(VertexShaderInput input) { VertexShaderOutput output; float4x4 viewProjection = mul(View, Projection); float4x4 worldViewProjection = mul(World, viewProjection); output.Position = mul(input.Position, worldViewProjection); output.Normal = mul(input.Normal, World); // Position's z and w components correspond to the distance // from camera and distance of the far plane respectively output.Depth.xy = output.Position.zw; return output; } // We render to two targets simultaneously, so we can't // simply return a float4 from the pixel shader struct PixelShaderOutput { float4 Normal : COLOR0; float4 Depth : COLOR1; }; PixelShaderOutput PixelShaderFunction(VertexShaderOutput input) { PixelShaderOutput output; // Depth is stored as distance from camera / far plane distance // to get value between 0 and 1 output.Depth = input.Depth.x / input.Depth.y; // Normal map simply stores X, Y and Z components of normal // shifted from (-1 to 1) range to (0 to 1) range output.Normal.xyz = (normalize(input.Normal).xyz / 2) + .5; // Other components must be initialized to compile output.Depth.a = 1; output.Normal.a = 1; return output; } technique Technique1 { pass Pass1 { VertexShader = compile vs_1_1 VertexShaderFunction(); PixelShader = compile ps_2_0 PixelShaderFunction(); } } PPLight.fx float4x4 WorldViewProjection; float4x4 InvViewProjection; texture2D DepthTexture; texture2D NormalTexture; sampler2D depthSampler = sampler_state { texture = ; minfilter = point; magfilter = point; mipfilter = point; }; sampler2D normalSampler = sampler_state { texture = ; minfilter = point; magfilter = point; mipfilter = point; }; float3 LightColor; float3 LightPosition; float LightAttenuation; // Include shared functions #include "PPShared.vsi" struct VertexShaderInput { float4 Position : POSITION0; }; struct VertexShaderOutput { float4 Position : POSITION0; float4 LightPosition : TEXCOORD0; }; VertexShaderOutput VertexShaderFunction(VertexShaderInput input) { VertexShaderOutput output; output.Position = mul(input.Position, WorldViewProjection); output.LightPosition = output.Position; return output; } float4 PixelShaderFunction(VertexShaderOutput input) : COLOR0 { // Find the pixel coordinates of the input position in the depth // and normal textures float2 texCoord = postProjToScreen(input.LightPosition) + halfPixel(); // Extract the depth for this pixel from the depth map float4 depth = tex2D(depthSampler, texCoord); // Recreate the position with the UV coordinates and depth value float4 position; position.x = texCoord.x * 2 - 1; position.y = (1 - texCoord.y) * 2 - 1; position.z = depth.r; position.w = 1.0f; // Transform position from screen space to world space position = mul(position, InvViewProjection); position.xyz /= position.w; // Extract the normal from the normal map and move from // 0 to 1 range to -1 to 1 range float4 normal = (tex2D(normalSampler, texCoord) - .5) * 2; // Perform the lighting calculations for a point light float3 lightDirection = normalize(LightPosition - position); float lighting = clamp(dot(normal, lightDirection), 0, 1); // Attenuate the light to simulate a point light float d = distance(LightPosition, position); float att = 1 - pow(d / LightAttenuation, 6); return float4(LightColor * lighting * att, 1); } technique Technique1 { pass Pass1 { VertexShader = compile vs_1_1 VertexShaderFunction(); PixelShader = compile ps_2_0 PixelShaderFunction(); } } PPShared.vsi has some common functions: float viewportWidth; float viewportHeight; // Calculate the 2D screen position of a 3D position float2 postProjToScreen(float4 position) { float2 screenPos = position.xy / position.w; return 0.5f * (float2(screenPos.x, -screenPos.y) + 1); } // Calculate the size of one half of a pixel, to convert // between texels and pixels float2 halfPixel() { return 0.5f / float2(viewportWidth, viewportHeight); } and finally from the Game class I set up in LoadContent with: effect = Content.Load(@"Effects\PPModel"); models[0] = new CModel(Content.Load(@"Models\teapot"), new Vector3(-50, 80, 0), new Vector3(0, 0, 0), 1f, Content.Load(@"Textures\prova_texture_autocad"), GraphicsDevice); house = new CModel(Content.Load(@"Models\house"), new Vector3(0, 0, 0), new Vector3((float)-Math.PI / 2, 0, 0), 35.0f, Content.Load(@"Textures\prova_texture_autocad"), GraphicsDevice); models[0].SetModelEffect(effect, true); house.SetModelEffect(effect, true); renderer = new PrelightingRenderer(GraphicsDevice, Content); renderer.Models = new List(); renderer.Models.Add(house); renderer.Models.Add(models[0]); renderer.Lights = new List() { new PPPointLight(new Vector3(0, 120, 0), Color.White * .85f, 2000) }; where PPModel.fx is: float4x4 World; float4x4 View; float4x4 Projection; texture2D BasicTexture; sampler2D basicTextureSampler = sampler_state { texture = ; addressU = wrap; addressV = wrap; minfilter = anisotropic; magfilter = anisotropic; mipfilter = linear; }; bool TextureEnabled = true; texture2D LightTexture; sampler2D lightSampler = sampler_state { texture = ; minfilter = point; magfilter = point; mipfilter = point; }; float3 AmbientColor = float3(0.15, 0.15, 0.15); float3 DiffuseColor; #include "PPShared.vsi" struct VertexShaderInput { float4 Position : POSITION0; float2 UV : TEXCOORD0; }; struct VertexShaderOutput { float4 Position : POSITION0; float2 UV : TEXCOORD0; float4 PositionCopy : TEXCOORD1; }; VertexShaderOutput VertexShaderFunction(VertexShaderInput input) { VertexShaderOutput output; float4x4 worldViewProjection = mul(World, mul(View, Projection)); output.Position = mul(input.Position, worldViewProjection); output.PositionCopy = output.Position; output.UV = input.UV; return output; } float4 PixelShaderFunction(VertexShaderOutput input) : COLOR0 { // Sample model's texture float3 basicTexture = tex2D(basicTextureSampler, input.UV); if (!TextureEnabled) basicTexture = float4(1, 1, 1, 1); // Extract lighting value from light map float2 texCoord = postProjToScreen(input.PositionCopy) + halfPixel(); float3 light = tex2D(lightSampler, texCoord); light += AmbientColor; return float4(basicTexture * DiffuseColor * light, 1); } technique Technique1 { pass Pass1 { VertexShader = compile vs_1_1 VertexShaderFunction(); PixelShader = compile ps_2_0 PixelShaderFunction(); } } I don't have any idea on what's wrong... googling the web I found that this tutorial may have some bug but I don't know if it's the LightModel fault (the sphere) or in a shader or in the class PrelightingRenderer. Any help is very appreciated, thank you for reading!

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  • How to install SQL Server 2005 Configuration Manager without installing SQL Server Management Studio

    - by Arnold Zokas
    Hi, I need to configure SQL Server aliases on a public-facing production server. To do that, I need to install SQL Server Configuration Manager. I was not able to find a standalone installer for that, so I am having to install SQL Server 2005 Client Components. This approach is not ideal as we don't want to have SSMS on an public-facing production server. Is there a way to install SQL Server 2005 Configuration Manager without installing SQL Server Management Studio? Thanks, Arnold

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  • Windows based Apache/PHP/Perl/database stacks

    - by GreenMatt
    Does anyone know if XAMPP's Perl also provides Tk support? Does anyone know of a similar stack which provides PostresSQL in addition to/instead of MySQL? I'd like this to run on Win 7 and XP. Edit: I do know I could install the other components I want "by hand", for example getting Tk from CPAN, I'd just prefer to get everything at one time if possible.

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  • Open file - Security warning

    - by joker
    Does anyone know how to disable the unknown publisher security warning when running an application in Windows Xp Home? It's pretty annoying to have to click run everytime... I have tried: Run gpedit.msc, and go to Local Computer Policy-User Configuration-Administrative Templates-Windows Components-Attachment Manager and enable "Default risk level for file attachments", and then enable "Inclusion list for low risk file types" and add to this list the file extensions that you want to open without triggering this crap. But this file 'gpedit.msc' doest not exist on my computer, i checked system32 folder also =/ maybe its for xp pro

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  • .NET 3.5 SP1 Installer hang at around 80%

    - by kuoson
    Hi, I was trying to install .NET 3.5 SP1 to one of our production machines with Windows 2003 SP2. However, the installer just hang at around 80% with message "Setup is loading installation components, This may take a minute or two". In fact it's been like that for 30mins already and using 0% CPU. I disabled the anti-virus software and then applied the windows installer 4.5 update but no luck, the installer still hangs. Anyone had this problem before?

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  • multiple webapps in tomcat -- what is the optimal architecture?

    - by rvdb
    I am maintaining a growing base of mainly Cocoon-2.1-based web applications [http://cocoon.apache.org/2.1/], deployed in a Tomcat servlet container [http://tomcat.apache.org/], and proxied with an Apache http server [http://httpd.apache.org/docs/2.2/]. I am conceptually struggling with the best way to deploy multiple web applications in Tomcat. Since I'm not a Java programmer and we don't have any sysadmin staff I have to figure out myself what is the most sensible way to do this. My setup has evolved through 2 scenarios and I'm considering a third for maximal separation of the distinct webapps. [1] 1 Tomcat instance, 1 Cocoon instance, multiple webapps -tomcat |_ webapps |_ webapp1 |_ webapp2 |_ webapp[n] |_ WEB-INF (with Cocoon libs) This was my first approach: just drop all web applications inside a single Cocoon webapps folder inside a single Tomcat container. This seemed to run fine, I did not encounter any memory issues. However, this poses a maintainability drawback, as some Cocoon components are subject to updates, which often affect the webapp coding. Hence, updating Cocoon becomes unwieldy: since all webapps share the same pool of Cocoon components, updating one of them would require the code in all web applications to be updated simultaneously. In order to isolate the web applications, I moved to the second scenario. [2] 1 Tomcat instance, each webapp in its dedicated Cocoon environment -tomcat |_ webapps |_ webapp1 | |_ WEB-INF (with Cocoon libs) |_ webapp1 | |_ WEB-INF (with Cocoon libs) |_ webapp[n] |_ WEB-INF (with Cocoon libs) This approach separates all webapps into their own Cocoon environment, run inside a single Tomcat container. In theory, this works fine: all webapps can be updated independently. However, this soon results in PermGenSpace errors. It seemed that I could manage the problem by increasing memory allocation for Tomcat, but I realise this isn't a structural solution, and that overloading a single Tomcat in this way is prone to future memory errors. This set me thinking about the third scenario. [3] multiple Tomcat instances, each with a single webapp in its dedicated Cocoon environment -tomcat |_ webapps |_ webapp1 |_ WEB-INF (with Cocoon libs) -tomcat |_ webapps |_ webapp2 |_ WEB-INF (with Cocoon libs) -tomcat |_ webapps |_ webapp[n] |_ WEB-INF (with Cocoon libs) I haven't tried this approach, but am thinking of the $CATALINA_BASE variable. A single Tomcat distribution can be multiply instanciated with different $CATALINA_BASE environments, each pointing to a Cocoon instance with its own webapp. I wonder whether such an approach could avoid the structural memory-related problems of approach [2], or will the same issues apply? On the other hand, this approach would complicate management of the Apache http frontend, as it will require the AJP connectors of the different Tomcat instances to be listening at different ports. Hence, Apache's worker configuration has to be updated and reloaded whenever a new webapp (in its own Tomcat instance) is added. And there seems no way to reload worker.properties without restarting the entire Apache http server. Is there perhaps another / more dynamic way of 'modularizing' multiple Tomcat-served webapps, or can one of these scenarios be refined? Any thoughts, suggestions, advice much appreciated. Ron

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  • Trac problem: AttributeError: Cannot find an implementation of the "IRequestHandler" interface named "WikiModule"

    - by Janosch
    This problem already has been described mutliple times in different mailing lists, but no solution has yet been published. My original setup is as follows (but in the mean time i have a simpler one on Windows 7): Ubuntu server with apache 2.2 and python 2.7 virutal python environment created with virtualenv installed babel, genshi and trac in this order using pip in the virtual environment Trac seems to run fine with tracd, but when visiting it through apache, i get the following error in an official trac error page: AttributeError: Cannot find an implementation of the "IRequestHandler" interface named "WikiModule" The stacktrace looks like this: Traceback (most recent call last): File "/srv/trac/python-environment/lib/python2.5/site-packages/Trac-0.13dev_r10668-py2.5.egg/trac/web/main.py",line 473, in _dispatch_request dispatcher.dispatch(req) File "/srv/trac/python-environment/lib/python2.5/site-packages/Trac-0.13dev_r10668-py2.5.egg/trac/web/main.py", line 154, in dispatch chosen_handler = self.default_handler File "/srv/trac/python-environment/lib/python2.5/site-packages/Trac-0.13dev_r10668-py2.5.egg/trac/config.py", line 691, in __get__ self.section, self.name)) AttributeError: Cannot find an implementation of the "IRequestHandler" interface named "WikiModule". Please update the option trac.default_handler in trac.ini. I already tried a lot to get down to the root of the problem, for me it looks as if all nativ trac components refuse to load. When one explicitely imports these components in the wsgi handler, some of them start to work somehow. Since i suspected the virtual environment, i dropped it, and manually copied all dependencies (babel, genshi, trac, ..) to one directory, and added this directory to system.path in the wsgi handler. I get exactly the same error. Since this setup is now independend from the environment, one can easily try it out on any other machine (windows or linux) running apache 2 and python 2.7. On my Windwos 7 machine, i got exactly the same problem. I zipped together the whole bundle, one can download it from http://www.xterity.de/tmp/trac-installation.zip . In the apache configuration (Windows 7 machine) i use the following settings: Alias /trac/chrome/common "D:/workspace/trac-installation/trac-resources/common" Alias /trac/chrome/site "D:/workspace/trac-installation/trac-resources/site" WSGIScriptAlias /trac "D:/workspace/trac-installation/apache/handler.wsgi" <Directory "D:/workspace/trac-installation/trac-resources"> Order allow,deny Allow from all </Directory> <Directory "D:/workspace/trac-installation"> Order allow,deny Allow from all </Directory> <Location "/trac"> Order allow,deny Allow from all </Location> And my handler.wsgi looks like this: import os import sys sys.path.append('D:/workspace/trac-installation/dependencies/') os.environ['TRAC_ENV'] = 'D:/workspace/trac-installation/trac-environments/Esp004' os.environ['PYTHON_EGG_CACHE'] = 'D:/workspace/trac-installation/eggs' import trac.web.main application = trac.web.main.dispatch_request Has anybody got an idea what could be the problem, or how to find out where it comes from?

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  • How can I install Message Queuing on Windows Server 2003?

    - by Zian Choy
    Setup: Windows Server 2003 Hooked up to a domain I'd like to install Message Queuing on the server but I get an error message when I try to use the Windows Components Wizards: The Message Queuing properties of this computer cannot be obtained from Active Directory. The server doesn't use any domain login information; I have a login that is specific to the server. How should I proceed?

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  • IIS is not working

    - by ahmad
    i am using win XP, i was using wamp server which was working well, soon i needed to install IIS components and now the problem is this, that neither my IIS is working not wamp server it asking for authentication localhost:80, i uninstall my wamp server but it does not works

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  • PELSOFT LAB DELHI ELAN LAPTOP CHINEESE MAKE LOW QUALITY ONE [closed]

    - by PREETI HARI
    I have purchase one elan laptop from pelsoft lab delhi after a lot of follow up calls from their call centers , in one month i found this laptop is of no use, it is of no use ,company failed to provide service , in market on enquiry i got answer that this lap ttop is of chineese make and all components are of non standard and cannot be replaced or repaired , is any body know how to format and repair this kind of system ,other i will loos 22000 rs at astretch pl help

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  • How do I remove Xen kernel and put normal kernel on RHEL 5

    - by yan bellavance
    I have 3 identical machines (hardware wise) that all have RHEL 5.3 installed. 2 of those machines have the Xen kernel and one doesnt. I cannot install nvidia drivers on the ones that have the xen kernel and so I was wondering how I managed to do this and how to replace them with normal kernels. Could this of happened during install time when for example I was queried on certain components to install? (development,virtualization, webserver)

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  • What is this very short power cable called?

    - by Portman
    I have a couple of networking components in my rack that take giant AC adapters ("power bricks") that don't fit neatly into my rackmount PDU. I have one "thingy" that is shown below, and I need to buy a few more. But I have no idea what I'm searching for because I don't know what the "thingy" is called. Yes, this drawing is terrible. I would ask my 4-year-old to draw it for me because she's a better artist, but she's taking a nap.

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  • Why does Adobe Acrobat Reader require a restart on update?

    - by White Phoenix
    Why does Adobe Acrobat Reader require a restart when you update it? It's a piece of software that reads PDFs. Just what else is it installing/updating that requires a total OS reboot to "complete" the installation? A bit of Googling indicates that it's to allow the OS to install the Adobe "Speed Launcher" - is this it or are there other components that are more tightly into the OS that it must absolutely have to have closed so that it can update them?

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  • Apache apachectl/httpd hangs

    - by VANJ
    Oracle HTTP Server (OHS), RHEL 5.3, Dell hardware Oracle has a modified version of Apache2 for use with web-enabled components in its product suite. The apachectl start command just hangs, even configtest hangs! Not sure what it is waiting for. How does one go about troubleshooting this? Thanks

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  • Configuring only one Internet Explorer zone (IntranetZone) thru GPO without affecting other zones?

    - by MadBoy
    I need to deploy some trusted intranet sites into Intranet Zone in Internet Explorer. It works fine when using GPO at: Setting Path: Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page Supported On: At least Internet Explorer 6.0 in Windows XP Service Pack 2 or Windows Server 2003 Service Pack 1 Problem is this settings also affect other zones making it impossible for people in company to add sites to other zones themselves. Is there a way to fix this so that Intranet Zone is deployed thru GPO and rest of settings stay in gesture of users?

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  • What PSU would be needed for a mid-range computer?

    - by iconiK
    I am building a mid-range computer primarily for gaming and graphic design. With the following components, what power supply unit would be good, in terms of having ample power for future expansion, with good efficiency and quiet operation, but most important, reliability in the long (5+ years) run? Gigabyt GA-H67MA-UD2H LGA 1155 Intel Core i5 2300 2.8GHz Crucial CT2KIT51264BA1339 2x4GB Kit ASUS HD 6850 DirectCU Intel X25-V 40GB SSD 2xSeagate 7200.12 1TB HDD RAID 1 Antec NSK-3480 µATX Case

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  • Need Windows XP VGA driver for i3 Haswell

    - by AFH
    Background: I have recently upgraded my hardware because the previous Pentium system started failing to the point that it would not run long enough to boot. It was obviously a hardware fault, but I had no way of knowing whether it was in the motherboard, CPU or memory. Not all the components were now available, so I decided to replace all three. In order to get some benefit from the expenditure, I though I would put in faster components, and for future-proofing went for recently released ones: MSI Z87-G41-PCMate and Intel i3-4130 with 4400 HD graphics. The system performs excellently with Ubuntu 13.10, so I know there are no hardware problems, but I need to continue running XP because it runs several thousand pounds (UK) worth of software, which meets my needs more than adequately: in some cases there is no longer support for later Windows releases, and in most others an expensive and to me unnecessary upgrade is required. Problem: The motherboard specifications claim Windows XP support for the live driver update utility, which misled me into believing that XP drivers were available. Not true: Intel have apparently refused to provide XP drivers for Haswell chips. The update program runs on XP, but finds no suitable Intel drivers. The system is more or less running on the default fail-safe VGA driver, but DirectX will not load, which stops a number of my applications from running. I have been trawling the internet for a month now, but I have not found a graphics driver which will load successfully: all show "This device cannot start. (code 10)". I don't need HDMI support: my monitor is 1280x1024 and connected through the VGA port, so all I need is a driver which will handle this resolution well enough to support DirectX. Has anyone found a driver which will do this? Please don't reply with information found from internet searches, unless you have actually solved this problem: be assured that I have been all round the houses looking at solutions which others have reported as working, but none of them does for me. Incidentally, I did find an Intel HD sound driver which XP accepts (winxp_145111.exe from Intel), though without connecting to an HDMI port on a TV or sound system I have no idea if it works in practice. However, the graphics section of the same driver fails, like all the others I've tried.

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