adf bam data control prod - Page 146

What are the different methods to expedite the data retrieval from database?

- by saillu2003

How can we expedite the data retrieval from the database for my web site which is extensively updating and fetching data from database.

Iterating over a large data set in long running Python process - memory issues?

I am working on a long running Python program (a part of it is a Flask API, and the other realtime data fetcher). Both my long running processes iterate, quite often (the API one might even do so hundreds of times a second) over large data sets (second by second observations of certain economic series, for example 1-5MB worth of data or even more). They also interpolate, compare and do calculations between series etc. What techniques, for the sake of keeping my processes alive, can I practice when iterating / passing as parameters / processing these large data sets? For instance, should I use the gc module and collect manually? Any advice would be appreciated. Thanks!

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PowerShell Control over Nikon D3000 Camera

My wife got me a Nikon D3000 camera for Christmas last year, and Im loving it but still trying to wrap my head around some of its features. For instance, when you plug it into a computer via USB, it doesnt show up as a drive like most cameras Ive used to, but rather it shows up as Computer\D3000. After a bit of research, Ive learned that this is because it implements the MTP/PTP protocol, and thus doesnt actually let Windows mount the cameras storage as a drive letter. Nikon describes the use of the MTP and PTP protocols in their cameras here. What Im really trying to do is gain access to the cameras file system via PowerShell. Ive been using a very handy PowerShell script to pull pictures off of my cameras and organize them into folders by date. Id love to be able to do the same thing with my Nikon D3000, but so far I havent been able to figure out how to get access to the files in PowerShell. If you know, Id appreciate any links/tips you can provide. All I could find is a shareware product called PTPdrive, which Im not prepared to shell out money for (yet). (and yes you can do much the same thing with Windows 7s Import Pictures and Videos wizard, which is pretty good too) However, in my searching, I did find some really cool stuff you can do with PowerShell and one of these cameras, like actually taking pictures via PowerShell commands. Credit for this goes to James ONeill and Mark Wilson. Heres what I was able to do: Taking Pictures via PowerShell with D3000 First, connect your camera, turn it on, and launch PowerShell. Execute the following commands to see what commands your device supports. $dialog = New-Object -ComObject "WIA.CommonDialog" $device = $dialog.ShowSelectDevice() $device.Commands You should see something like this: Now, to take a picture, simply point your camera at something and then execute this command: $device.ExecuteCommand("{AF933CAC-ACAD-11D2-A093-00C04F72DC3C}") .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } Imagine my surprise when this actually took a picture (with auto-focus): Imagine what you could do with a camera completely under the control of your computer Time-lapse photography would be pretty simple, for instance, with a very simple loop that takes a picture and then sleeps for a minute (or whatever time period). Hooked up to a laptop for portability (and an A/C power supply), this would be pretty trivial to implement. I may have to give it a shot and report back. Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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Import Data from Excel sheet to DB Table through OAF page

- by PRajkumar

1. Create a New Workspace and Project File > New > General > Workspace Configured for Oracle Applications File Name – PrajkumarImportxlsDemo Automatically a new OA Project will also be created Project Name -- ImportxlsDemo Default Package -- prajkumar.oracle.apps.fnd.importxlsdemo 2. Add JAR file jxl-2.6.3.jar to Apache Library Download jxl-2.6.3.jar from following link – http://www.findjar.com/jar/net.sourceforge.jexcelapi/jars/jxl-2.6.jar.html Steps to add jxl.jar file in Local Machine Right Click on ImportxlsDemo > Project Properties > Libraries > Add jar/Directory and browse to directory where jxl-2.6.3.jar has been downloaded and select the JAR file Steps to add jxl.jar file at EBS middle tier On your EBS middile tier copy jxl.jar at $FND_TOP/java/3rdparty/standalone Add $FND_TOP/java/3rdparty/standalone\jxl.jar to custom classpath in Jser.properties file which is at $IAS_ORACLE_HOME/Apache/Jserv/etc wrapper.classpath=/U01/oracle/dev/devappl/fnd/11.5.0/java/3rdparty/stdalone/jxl.jar Bounce Apache Server 3. Create a New Application Module (AM) Right Click on ImportxlsDemo > New > ADF Business Components > Application Module Name -- ImportxlsAM Package -- prajkumar.oracle.apps.fnd.importxlsdemo.server Check Application Module Class: ImportxlsAMImpl Generate JavaFile(s) 4. Create Test Table in which we will insert data from excel CREATE TABLE xx_import_excel_data_demo ( -- -------------------- -- Data Columns -- -------------------- column1 VARCHAR2(100), column2 VARCHAR2(100), column3 VARCHAR2(100), column4 VARCHAR2(100), column5 VARCHAR2(100), -- -------------------- -- Who Columns -- -------------------- last_update_date DATE NOT NULL, last_updated_by NUMBER NOT NULL, creation_date DATE NOT NULL, created_by NUMBER NOT NULL, last_update_login NUMBER ); 5. Create a New Entity Object (EO) Right click on ImportxlsDemo > New > ADF Business Components > Entity Object Name – ImportxlsEO Package -- prajkumar.oracle.apps.fnd.importxlsdemo.schema.server Database Objects -- XX_IMPORT_EXCEL_DATA_DEMO Note – By default ROWID will be the primary key if we will not make any column to be primary key Check the Accessors, Create Method, Validation Method and Remove Method 6. Create a New View Object (VO) Right click on ImportxlsDemo > New > ADF Business Components > View Object Name -- ImportxlsVO Package -- prajkumar.oracle.apps.fnd.importxlsdemo.server In Step2 in Entity Page select ImportxlsEO and shuttle it to selected list In Step3 in Attributes Window select all columns and shuttle them to selected list In Java page Uncheck Generate Java file for View Object Class: ImportxlsVOImpl Select Generate Java File for View Row Class: ImportxlsVORowImpl -> Generate Java File -> Accessors 7. Add Your View Object to Root UI Application Module Right click on ImportxlsAM > Edit ImportxlsAM > Data Model > Select ImportxlsVO and shuttle to Data Model list 8. Create a New Page Right click on ImportxlsDemo > New > Web Tier > OA Components > Page Name -- ImportxlsPG Package -- prajkumar.oracle.apps.fnd.importxlsdemo.webui 9. Select the ImportxlsPG and go to the strcuture pane where a default region has been created 10. Select region1 and set the following properties: Attribute Property ID PageLayoutRN AM Definition prajkumar.oracle.apps.fnd.importxlsdemo.server.ImportxlsAM Window Title Import Data From Excel through OAF Page Demo Window Title Import Data From Excel through OAF Page Demo 11. Create messageComponentLayout Region Under Page Layout Region Right click PageLayoutRN > New > Region Attribute Property ID MainRN Item Style messageComponentLayout 12. Create a New Item messageFileUpload Bean under MainRN Right click on MainRN > New > messageFileUpload Set Following Properties for New Item -- Attribute Property ID MessageFileUpload Item Style messageFileUpload 13. Create a New Item Submit Button Bean under MainRN Right click on MainRN > New > messageLayout Set Following Properties for messageLayout -- Attribute Property ID ButtonLayout Right Click on ButtonLayout > New > Item Attribute Property ID Go Item Style submitButton Attribute Set /oracle/apps/fnd/attributesets/Buttons/Go 14. Create Controller for page ImportxlsPG Right Click on PageLayoutRN > Set New Controller Package Name: prajkumar.oracle.apps.fnd.importxlsdemo.webui Class Name: ImportxlsCO Write Following Code in ImportxlsCO in processFormRequest import oracle.apps.fnd.framework.OAApplicationModule; import oracle.apps.fnd.framework.OAException; import java.io.Serializable; import oracle.apps.fnd.framework.webui.OAControllerImpl; import oracle.apps.fnd.framework.webui.OAPageContext; import oracle.apps.fnd.framework.webui.beans.OAWebBean; import oracle.cabo.ui.data.DataObject; import oracle.jbo.domain.BlobDomain; public void processFormRequest(OAPageContext pageContext, OAWebBean webBean) { super.processFormRequest(pageContext, webBean); if (pageContext.getParameter("Go") != null) { DataObject fileUploadData = (DataObject)pageContext.getNamedDataObject("MessageFileUpload"); String fileName = null; try { fileName = (String)fileUploadData.selectValue(null, "UPLOAD_FILE_NAME"); } catch(NullPointerException ex) { throw new OAException("Please Select a File to Upload", OAException.ERROR); } BlobDomain uploadedByteStream = (BlobDomain)fileUploadData.selectValue(null, fileName); try { OAApplicationModule oaapplicationmodule = pageContext.getRootApplicationModule(); Serializable aserializable2[] = {uploadedByteStream}; Class aclass2[] = {BlobDomain.class }; oaapplicationmodule.invokeMethod("ReadExcel", aserializable2,aclass2); } catch (Exception ex) { throw new OAException(ex.toString(), OAException.ERROR); } } } Write Following Code in ImportxlsAMImpl.java import java.io.IOException; import java.io.InputStream; import jxl.Cell; import jxl.CellType; import jxl.Sheet; import jxl.Workbook; import jxl.read.biff.BiffException; import oracle.apps.fnd.framework.server.OAApplicationModuleImpl; import oracle.jbo.Row; import oracle.apps.fnd.framework.OAViewObject; import oracle.apps.fnd.framework.server.OAViewObjectImpl; import oracle.jbo.domain.BlobDomain; public void createRecord(String[] excel_data) { OAViewObject vo = (OAViewObject)getImportxlsVO1(); if (!vo.isPreparedForExecution()) { vo.executeQuery(); } Row row = vo.createRow(); try { for (int i=0; i < excel_data.length; i++) { row.setAttribute("Column" +(i+1) ,excel_data[i]); } } catch(Exception e) { System.out.println(e.getMessage()); } vo.insertRow(row); getTransaction().commit(); } public void ReadExcel(BlobDomain fileData) throws IOException { String[] excel_data = new String[5]; InputStream inputWorkbook = fileData.getInputStream(); Workbook w; try { w = Workbook.getWorkbook(inputWorkbook); // Get the first sheet Sheet sheet = w.getSheet(0); for (int i = 0; i < sheet.getRows(); i++) { for (int j = 0; j < sheet.getColumns(); j++) { Cell cell = sheet.getCell(j, i); CellType type = cell.getType(); if (cell.getType() == CellType.LABEL) { System.out.println("I got a label " + cell.getContents()); excel_data[j] = cell.getContents(); } if (cell.getType() == CellType.NUMBER) { System.out.println("I got a number " + cell.getContents()); excel_data[j] = cell.getContents(); } } createRecord(excel_data); } } catch (BiffException e) { e.printStackTrace(); } } 15. Congratulation you have successfully finished. Run Your page and Test Your Work Consider Excel PRAJ_TEST.xls with following data -- Lets Try to import this data into DB Table --

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Access Control Service: Transitioning between Active and Passive Scenarios

- by Your DisplayName here!

As I mentioned in my last post, ACS features a number of ways to transition between protocol and token types. One not so widely known transition is between passive sign ins (browser) and active service consumers. Let’s see how this works. We all know the usual WS-Federation handshake via passive redirect. But ACS also allows driving the sign in process yourself via specially crafted WS-Federation query strings. So you can use the following URL to sign in using LiveID via ACS. ACS will then redirect back to the registered reply URL in your application: GET /login.srf? wa=wsignin1.0& wtrealm=https%3a%2f%2faccesscontrol.windows.net%2f& wreply=https%3a%2f%2fleastprivilege.accesscontrol.windows.net%3a443%2fv2%2fwsfederation& wp=MBI_FED_SSL& wctx=pr%3dwsfederation%26rm%3dhttps%253a%252f%252froadie%252facs2rp%252frest%252f The wsfederation bit in the wctx parameter indicates, that the response to the token request will be transmitted back to the relying party via a POST. So far so good – but how can an active client receive that token now? ACS knows an alternative way to send the token request response. Instead of doing the redirect back to the RP, it emits a page that in turn echoes the token response using JavaScript’s window.external.notify. The URL would look like this: GET /login.srf? wa=wsignin1.0& wtrealm=https%3a%2f%2faccesscontrol.windows.net%2f& wreply=https%3a%2f%2fleastprivilege.accesscontrol.windows.net%3a443%2fv2%2fwsfederation& wp=MBI_FED_SSL& wctx=pr%3djavascriptnotify%26rm%3dhttps%253a%252f%252froadie%252facs2rp%252frest%252f ACS would then render a page that contains the following script block: <script type="text/javascript"> try{ window.external.Notify('token_response'); } catch(err){ alert("Error ACS50021: windows.external.Notify is not registered."); } </script> Whereas token_response is a JSON encoded string with the following format: { "appliesTo":"...", "context":null, "created":123, "expires":123, "securityToken":"...", "tokenType":"..." } OK – so how does this all come together now? As an active client (Silverlight, WPF, WP7, WinForms etc). application, you would host a browser control and use the above URL to trigger the right series of redirects. All the browser controls support one way or the other to register a callback whenever the window.external.notify function is called. This way you get the JSON string from ACS back into the hosting application – and voila you have the security token. When you selected the SWT token format in ACS – you can use that token e.g. for REST services. When you have selected SAML, you can use the token e.g. for SOAP services. In the next post I will show how to retrieve these URLs from ACS and a practical example using WPF.

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IE8 HTTPs Download Issue

- by Jon Egerton

I have a problem with a system I develop related to IE8 downloading over SSL (ie on sites using https://...) and is described on this MS kb article: http://support.microsoft.com/kb/323308 We use the HTTPCacheability.NoCache option as the data being downloaded is sensitive, and is downloaded from a secured site. I don't want that data to be cached on any of the proxies etc that the response passes through back to the client. The article describing the issue details a fix to the client side registry changing a BypassSSLNoCacheCheck setting. I don't want to loosen the system security just for IE8, as the system works fine on anything more upto date. Getting all the clients to apply the hotfix is difficult at best, and impossible at worst. We need to support IE8 in the system, at least for now. So: 1: Does the detailed hotfix have any implications for the security at the browser end in IE8 - does it mean the file will be cached? (in a place other than where the user saves the file). 2: Is there some way I can get these files downloadable with a change at the server end that doesn't break the security side of things?

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Access Control Lists for Roles

- by Kyle Hatlestad

Back in an earlier post, I wrote about how to enable entity security (access control lists, aka ACLs) for UCM 11g PS3. Well, there was actually an additional security option that was included in that release but not fully supported yet (only for Fusion Applications). It's the ability to define Roles as ACLs to entities (documents and folders). But now in PS5, this security option is now fully supported. The benefit of defining Roles for ACLs is that those user roles come from the enterprise security directory (e.g. OID, Active Directory, etc) and thus the WebCenter Content administrator does not need to define them like they do with ACL Groups (Aliases). So it's a bit of best of both worlds. Users are managed through the LDAP repository and are automatically granted/denied access through their group membership which are mapped to Roles in WCC. A different way to think about it is being able to add multiple Accounts to content items...which I often get asked about. Because LDAP groups can map to Accounts, there has always been this association between the LDAP groups and access to the entity in WCC. But that mapping had to define the specific level of access (RWDA) and you could only apply one Account per content item or folder. With Roles for ACLs, it basically takes away both of those restrictions by allowing users to define more then one Role and define the level of access on-the-fly. To turn on ACLs for Roles, there is a component to enable. On the Component Manager page, click the 'advanced component manager' link in the description paragraph at the top. In the list of Disabled Components, enable the RoleEntityACL component. Then restart. This is assuming the other configuration settings have been made for the other ACLs in the earlier post. Once enabled, a new metadata field called xClbraRoleList will be created. If you are using OracleTextSearch as the search indexer, be sure to run a Fast Rebuild on the collection. For Users and Groups, these values are automatically picked up from the corresponding database tables. In the case of Roles, there is an explicitly defined list of choices that are made available. These values must match the roles that are coming from the enterprise security repository. To add these values, go to Administration -> Admin Applets -> Configuration Manager. On the Views tab, edit the values for the ExternalRolesView. By default, 'guest' and 'authenticated' are added. Once added, you can assign the roles to your content or folder. If you are a user that can both access the Security Group for that item and you belong to that particular Role, you now have access to that item. If you don't belong to that Role, you won't! [Extra] Because the selection mechanism for the list is using a type-ahead field, users may not even know the possible choices to start typing to. To help them, one thing you can add to the form is a placeholder field which offers the entire list of roles as an option list they can scroll through (assuming its a manageable size) and view to know what to type to. By being a placeholder field, it won't need to be added to the custom metadata database table or search engine.

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WCF – interchangeable data-contract types

- by nmarun

In a WSDL based environment, unlike a CLR-world, we pass around the ‘state’ of an object and not the reference of an object. Well firstly, what does ‘state’ mean and does this also mean that we can send a struct where a class is expected (or vice-versa) as long as their ‘state’ is one and the same? Let’s see. So I have an operation contract defined as below: 1: [ServiceContract] 2: public interface ILearnWcfServiceExtend : ILearnWcfService 3: { 4: [OperationContract] 5: Employee SaveEmployee(Employee employee); 6: } 7: 8: [ServiceBehavior] 9: public class LearnWcfService : ILearnWcfServiceExtend 10: { 11: public Employee SaveEmployee(Employee employee) 12: { 13: employee.EmployeeId = 123; 14: return employee; 15: } 16: } Quite simplistic operation there (which translates to ‘absolutely no business value’). Now, the data contract Employee mentioned above is a struct. 1: public struct Employee 2: { 3: public int EmployeeId { get; set; } 4: 5: public string FName { get; set; } 6: } After compilation and consumption of this service, my proxy (in the Reference.cs file) looks like below (I’ve ignored the rest of the details just to avoid unwanted confusion): 1: public partial struct Employee : System.Runtime.Serialization.IExtensibleDataObject, System.ComponentModel.INotifyPropertyChanged I call the service with the code below: 1: private static void CallWcfService() 2: { 3: Employee employee = new Employee { FName = "A" }; 4: Console.WriteLine("IsValueType: {0}", employee.GetType().IsValueType); 5: Console.WriteLine("IsClass: {0}", employee.GetType().IsClass); 6: Console.WriteLine("Before calling the service: {0} - {1}", employee.EmployeeId, employee.FName); 7: employee = LearnWcfServiceClient.SaveEmployee(employee); 8: Console.WriteLine("Return from the service: {0} - {1}", employee.EmployeeId, employee.FName); 9: } The output is: I now change my Employee type from a struct to a class in the proxy class and run the application: 1: public partial class Employee : System.Runtime.Serialization.IExtensibleDataObject, System.ComponentModel.INotifyPropertyChanged { The output this time is: The state of an object implies towards its composition, the properties and the values of these properties and not based on whether it is a reference type (class) or a value type (struct). And as shown above, we’re actually passing an object by its state and not by reference. Continuing on the same topic of ‘type-interchangeability’, WCF treats two data contracts as equivalent if they have the same ‘wire-representation’. We can do so using the DataContract and DataMember attributes’ Name property. 1: [DataContract] 2: public struct Person 3: { 4: [DataMember] 5: public int Id { get; set; } 6: 7: [DataMember] 8: public string FirstName { get; set; } 9: } 10: 11: [DataContract(Name="Person")] 12: public class Employee 13: { 14: [DataMember(Name = "Id")] 15: public int EmployeeId { get; set; } 16: 17: [DataMember(Name="FirstName")] 18: public string FName { get; set; } 19: } I’ve created two data contracts with the exact same wire-representation. Just remember that the names and the types of data members need to match to be considered equivalent. The question then arises as to what gets generated in the proxy class. Despite us declaring two data contracts (Person and Employee), only one gets emitted – Person. This is because we’re saying that the Employee type has the same wire-representation as the Person type. Also that the signature of the SaveEmployee operation gets changed on the proxy side: 1: [System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "4.0.0.0")] 2: [System.ServiceModel.ServiceContractAttribute(ConfigurationName="ServiceProxy.ILearnWcfServiceExtend")] 3: public interface ILearnWcfServiceExtend 4: { 5: [System.ServiceModel.OperationContractAttribute(Action="http://tempuri.org/ILearnWcfServiceExtend/SaveEmployee", ReplyAction="http://tempuri.org/ILearnWcfServiceExtend/SaveEmployeeResponse")] 6: ClientApplication.ServiceProxy.Person SaveEmployee(ClientApplication.ServiceProxy.Person employee); 7: } But, on the service side, the SaveEmployee still accepts and returns an Employee data contract. 1: [ServiceBehavior] 2: public class LearnWcfService : ILearnWcfServiceExtend 3: { 4: public Employee SaveEmployee(Employee employee) 5: { 6: employee.EmployeeId = 123; 7: return employee; 8: } 9: } Despite all these changes, our output remains the same as the last one: This is type-interchangeability at work! Here’s one more thing to ponder about. Our Person type is a struct and Employee type is a class. Then how is it that the Person type got emitted as a ‘class’ in the proxy? It’s worth mentioning that WSDL describes a type called Employee and does not say whether it is a class or a struct (see the SOAP message below): 1: <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" 2: xmlns:tem="http://tempuri.org/" 3: xmlns:ser="http://schemas.datacontract.org/2004/07/ServiceApplication"> 4: <soapenv:Header/> 5: <soapenv:Body> 6: <tem:SaveEmployee> 7:  8: <tem:employee> 9:  10: <ser:EmployeeId>?</ser:EmployeeId> 11:  12: <ser:FName>?</ser:FName> 13: </tem:employee> 14: </tem:SaveEmployee> 15: </soapenv:Body> 16: </soapenv:Envelope> There are some differences between how ‘Add Service Reference’ and the svcutil.exe generate the proxy class, but turns out both do some kind of reflection and determine the type of the data contract and emit the code accordingly. So since the Employee type is a class, the proxy ‘Person’ type gets generated as a class. In fact, reflecting on svcutil.exe application, you’ll see that there are a couple of places wherein a flag actually determines a type as a class or a struct. One example is in the ExportISerializableDataContract method in the System.Runtime.Serialization.CodeExporter class. Seems like these flags have a say in deciding whether the type gets emitted as a struct or a class. This behavior is different if you use the WSDL tool though. WSDL tool does not do any kind of reflection of the data contract / serialized type, it emits the type as a class by default. You can check this using the two command lines below: Note to self: Remember ‘state’ and type-interchangeability when traversing through the WSDL planet!

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Metrics - A little knowledge can be a dangerous thing (or 'Why you're not clever enough to interpret metrics data')

- by Jason Crease

At RedGate Software, I work on a .NET obfuscator called SmartAssembly. Various features of it use a database to store various things (exception reports, name-mappings, etc.) The user is given the option of using either a SQL-Server database (which requires them to have Microsoft SQL Server), or a Microsoft Access MDB file (which requires nothing). MDB is the default option, but power-users soon switch to using a SQL Server database because it offers better performance and data-sharing. In the fashionable spirit of optimization and metrics, an obvious product-management question is 'Which is the most popular? SQL Server or MDB?' We've collected data about this fact, using our 'Feature-Usage-Reporting' technology (available as part of SmartAssembly) and more recently our 'Application Metrics' technology: Parameter Number of users % of total users Number of sessions Number of usages SQL Server 28 19.0 8115 8115 MDB 114 77.6 1449 1449 (As a disclaimer, please note than SmartAssembly has far more than 132 users . This data is just a selection of one build) So, it would appear that SQL-Server is used by fewer users, but more often. Great. But here's why these numbers are useless to me: Only the original developers understand the data What does a single 'usage' of 'MDB' mean? Does this happen once per run? Once per option change? On clicking the 'Obfuscate Now' button? When running the command-line version or just from the UI version? Each question could skew the data 10-fold either way, and the answers only known by the developer that instrumented the application in the first place. In other words, only the original developer can interpret the data - product-managers cannot interpret the data unaided. Most of the data is from uninterested users About half of people who download and run a free-trial from the internet quit it almost immediately. Only a small fraction use it sufficiently to make informed choices. Since the MDB option is the default one, we don't know how many of those 114 were people CHOOSING to use the MDB, or how many were JUST HAPPENING to use this MDB default for their 20-second trial. This is a problem we see across all our metrics: Are people are using X because it's the default or are they using X because they want to use X? We need to segment the data further - asking what percentage of each percentage meet our criteria for an 'established user' or 'informed user'. You end up spending hours writing sophisticated and dubious SQL queries to segment the data further. Not fun. You can't find out why they used this feature Metrics can answer the when and what, but not the why. Why did people use feature X? If you're anything like me, you often click on random buttons in unfamiliar applications just to explore the feature-set. If we listened uncritically to metrics at RedGate, we would eliminate the most-important and more-complex features which people actually buy the software for, leaving just big buttons on the main page and the About-Box. "Ah, that's interesting!" rather than "Ah, that's actionable!" People do love data. Did you know you eat 1201 chickens in a lifetime? But just 4 cows? Interesting, but useless. Often metrics give you a nice number: '5.8% of users have 3 or more monitors' . But unless the statistic is both SUPRISING and ACTIONABLE, it's useless. Most metrics are collected, reviewed with lots of cooing. and then forgotten. Unless a piece-of-data could change things, it's useless collecting it. People get obsessed with significance levels The first things that lots of people do with this data is do a t-test to get a significance level ("Hey! We know with 99.64% confidence that people prefer SQL Server to MDBs!") Believe me: other causes of error/misinterpretation in your data are FAR more significant than your t-test could ever comprehend. Confirmation bias prevents objectivity If the data appears to match our instinct, we feel satisfied and move on. If it doesn't, we suspect the data and dig deeper, plummeting down a rabbit-hole of segmentation and filtering until we give-up and move-on. Data is only useful if it can change our preconceptions. Do you trust this dodgy data more than your own understanding, knowledge and intelligence? I don't. There's always multiple plausible ways to interpret/action any data Let's say we segment the above data, and get this data: Post-trial users (i.e. those using a paid version after the 14-day free-trial is over): Parameter Number of users % of total users Number of sessions Number of usages SQL Server 13 9.0 1115 1115 MDB 5 4.2 449 449 Trial users: Parameter Number of users % of total users Number of sessions Number of usages SQL Server 15 10.0 7000 7000 MDB 114 77.6 1000 1000 How do you interpret this data? It's one of: Mostly SQL Server users buy our software. People who can't afford SQL Server tend to be unable to afford or unwilling to buy our software. Therefore, ditch MDB-support. Our MDB support is so poor and buggy that our massive MDB user-base doesn't buy it. Therefore, spend loads of money improving it, and think about ditching SQL-Server support. People 'graduate' naturally from MDB to SQL Server as they use the software more. Things are fine the way they are. We're marketing the tool wrong. The large number of MDB users represent uninformed downloaders. Tell marketing to aggressively target SQL Server users. To choose an interpretation you need to segment again. And again. And again, and again. Opting-out is correlated with feature-usage Metrics tends to be opt-in. This skews the data even further. Between 5% and 30% of people choose to opt-in to metrics (often called 'customer improvement program' or something like that). Casual trial-users who are uninterested in your product or company are less likely to opt-in. This group is probably also likely to be MDB users. How much does this skew your data by? Who knows? It's not all doom and gloom. There are some things metrics can answer well. Environment facts. How many people have 3 monitors? Have Windows 7? Have .NET 4 installed? Have Japanese Windows? Minor optimizations. Is the text-box big enough for average user-input? Performance data. How long does our app take to start? How many databases does the average user have on their server? As you can see, questions about who-the-user-is rather than what-the-user-does are easier to answer and action. Conclusion Use SmartAssembly. If not for the metrics (called 'Feature-Usage-Reporting'), then at least for the obfuscation/error-reporting. Data raises more questions than it answers. Questions about environment are the easiest to answer.

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Data management in unexpected places

- by Ashok_Ora

Normal 0 false false false EN-US X-NONE X-NONE Data management in unexpected places When you think of network switches, routers, firewall appliances, etc., it may not be obvious that at the heart of these kinds of solutions is an engine that can manage huge amounts of data at very high throughput with low latencies and high availability. Consider a network router that is processing tens (or hundreds) of thousands of network packets per second. So what really happens inside a router? Packets are streaming in at the rate of tens of thousands per second. Each packet has multiple attributes, for example, a destination, associated SLAs etc. For each packet, the router has to determine the address of the next “hop” to the destination; it has to determine how to prioritize this packet. If it’s a high priority packet, then it has to be sent on its way before lower priority packets. As a consequence of prioritizing high priority packets, lower priority data packets may need to be temporarily stored (held back), but addressed fairly. If there are security or privacy requirements associated with the data packet, those have to be enforced. You probably need to keep track of statistics related to the packets processed (someone’s sure to ask). You have to do all this (and more) while preserving high availability i.e. if one of the processors in the router goes down, you have to have a way to continue processing without interruption (the customer won’t be happy with a “choppy” VoIP conversation, right?). And all this has to be achieved without ANY intervention from a human operator – the router is most likely to be in a remote location – it must JUST CONTINUE TO WORK CORRECTLY, even when bad things happen. How is this implemented? As soon as a packet arrives, it is interpreted by the receiving software. The software decodes the packet headers in order to determine the destination, kind of packet (e.g. voice vs. data), SLAs associated with the “owner” of the packet etc. It looks up the internal database of “rules” of how to process this packet and handles the packet accordingly. The software might choose to hold on to the packet safely for some period of time, if it’s a low priority packet. Ah – this sounds very much like a database problem. For each packet, you have to minimally · Look up the most efficient next “hop” towards the destination. The “most efficient” next hop can change, depending on latency, availability etc. · Look up the SLA and determine the priority of this packet (e.g. voice calls get priority over data ftp) · Look up security information associated with this data packet. It may be necessary to retrieve the context for this network packet since a network packet is a small “slice” of a session. The context for the “header” packet needs to be stored in the router, in order to make this work. · If the priority of the packet is low, then “store” the packet temporarily in the router until it is time to forward the packet to the next hop. · Update various statistics about the packet. In most cases, you have to do all this in the context of a single transaction. For example, you want to look up the forwarding address and perform the “send” in a single transaction so that the forwarding address doesn’t change while you’re sending the packet. So, how do you do all this? Berkeley DB is a proven, reliable, high performance, highly available embeddable database, designed for exactly these kinds of usage scenarios. Berkeley DB is a robust, reliable, proven solution that is currently being used in these scenarios. First and foremost, Berkeley DB (or BDB for short) is very very fast. It can process tens or hundreds of thousands of transactions per second. It can be used as a pure in-memory database, or as a disk-persistent database. BDB provides high availability – if one board in the router fails, the system can automatically failover to another board – no manual intervention required. BDB is self-administering – there’s no need for manual intervention in order to maintain a BDB application. No need to send a technician to a remote site in the middle of nowhere on a freezing winter day to perform maintenance operations. BDB is used in over 200 million deployments worldwide for the past two decades for mission-critical applications such as the one described here. You have a choice of spending valuable resources to implement similar functionality, or, you could simply embed BDB in your application and off you go! I know what I’d do – choose BDB, so I can focus on my business problem. What will you do? /* 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-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; 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-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;}

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Access Control Service v2: Registering Web Identities in your Applications [concepts]

- by Your DisplayName here!

ACS v2 support two fundamental types of client identities– I like to call them “enterprise identities” (WS-*) and “web identities” (Google, LiveID, OpenId in general…). I also see two different “mind sets” when it comes to application design using the above identity types: Enterprise identities – often the fact that a client can present a token from a trusted identity provider means he is a legitimate user of the application. Trust relationships and authorization details have been negotiated out of band (often on paper). Web identities – the fact that a user can authenticate with Google et al does not necessarily mean he is a legitimate (or registered) user of an application. Typically additional steps are necessary (like filling out a form, email confirmation etc). Sometimes also a mixture of both approaches exist, for the sake of this post, I will focus on the web identity case. I got a number of questions how to implement the web identity scenario and after some conversations it turns out it is the old authentication vs. authorization problem that gets in the way. Many people use the IsAuthenticated property on IIdentity to make security decisions in their applications (or deny user=”?” in ASP.NET terms). That’s a very natural thing to do, because authentication was done inside the application and we knew exactly when the IsAuthenticated condition is true. Been there, done that. Guilty ;) The fundamental difference between these “old style” apps and federation is, that authentication is not done by the application anymore. It is done by a third party service, and in the case of web identity providers, in services that are not under our control (nor do we have a formal business relationship with these providers). Now the issue is, when you switch to ACS, and someone with a Google account authenticates, indeed IsAuthenticated is true – because that’s what he is! This does not mean, that he is also authorized to use the application. It just proves he was able to authenticate with Google. Now this obviously leads to confusion. How can we solve that? Easy answer: We have to deal with authentication and authorization separately. Job done ;) For many application types I see this general approach: Application uses ACS for authentication (maybe both enterprise and web identities, we focus on web identities but you could easily have a dual approach here) Application offers to authenticate (or sign in) via web identity accounts like LiveID, Google, Facebook etc. Application also maintains a database of its “own” users. Typically you want to store additional information about the user In such an application type it is important to have a unique identifier for your users (think the primary key of your user database). What would that be? Most web identity provider (and all the standard ACS v2 supported ones) emit a NameIdentifier claim. This is a stable ID for the client (scoped to the relying party – more on that later). Furthermore ACS emits a claims identifying the identity provider (like the original issuer concept in WIF). When you combine these two values together, you can be sure to have a unique identifier for the user, e.g.: Facebook-134952459903700\799880347 You can now check on incoming calls, if the user is already registered and if yes, swap the ACS claims with claims coming from your user database. One claims would maybe be a role like “Registered User” which can then be easily used to do authorization checks in the application. The WIF claims authentication manager is a perfect place to do the claims transformation. If the user is not registered, show a register form. Maybe you can use some claims from the identity provider to pre-fill form fields. (see here where I show how to use the Facebook API to fetch additional user properties). After successful registration (which may include other mechanisms like a confirmation email), flip the bit in your database to make the web identity a registered user. This is all very theoretical. In the next post I will show some code and provide a download link for the complete sample. More on NameIdentifier Identity providers “guarantee” that the name identifier for a given user in your application will always be the same. But different applications (in the case of ACS – different ACS namespaces) will see different name identifiers. This is by design to protect the privacy of users because identical name identifiers could be used to create “profiles” of some sort for that user. In technical terms they create the name identifier approximately like this: name identifier = Hash((Provider Internal User ID) + (Relying Party Address)) Why is this important to know? Well – when you change the name of your ACS namespace, the name identifiers will change as well and you will will lose your “connection” to your existing users. Oh an btw – never use any other claims (like email address or name) to form a unique ID – these can often be changed by users.

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Access Control Service: Handling Errors

- by Your DisplayName here!

Another common problem with external authentication is how to deal with sign in errors. In active federation like WS-Trust there are well defined SOAP faults to communicate problem to a client. But with web applications, the error information is typically generated and displayed on the external sign in page. The relying party does not know about the error, nor can it help the user in any way. The Access Control Service allows to post sign in errors to a specified page. You setup this page in the relying party registration. That means that whenever an error occurs in ACS, the error information gets packaged up as a JSON string and posted to the page specified. This way you get structued error information back into you application so you can display a friendlier error message or log the error. I added error page support to my ACS2 sample, which can be downloaded here. How to turn the JSON error into CLR types The JSON schema is reasonably simple, the following class turns the JSON into an object: [DataContract] public class AcsErrorResponse { [DataMember(Name = "context", Order = 1)] public string Context { get; set; } [DataMember(Name = "httpReturnCode", Order = 2)] public string HttpReturnCode { get; set; } [DataMember(Name = "identityProvider", Order = 3)] public string IdentityProvider { get; set; } [DataMember(Name = "timeStamp", Order = 4)] public string TimeStamp { get; set; } [DataMember(Name = "traceId", Order = 5)] public string TraceId { get; set; } [DataMember(Name = "errors", Order = 6)] public List<AcsError> Errors { get; set; } public static AcsErrorResponse Read(string json) { var serializer = new DataContractJsonSerializer( typeof(AcsErrorResponse)); var response = serializer.ReadObject( new MemoryStream(Encoding.Default.GetBytes(json))) as AcsErrorResponse; if (response != null) { return response; } else { throw new ArgumentException("json"); } } } [DataContract] public class AcsError { [DataMember(Name = "errorCode", Order = 1)] public string Code { get; set; } [DataMember(Name = "errorMessage", Order = 2)] public string Message { get; set; } } Retrieving the error information You then need to provide a page that takes the POST and deserializes the information. My sample simply fills a view that shows all information. But that’s for diagnostic/sample purposes only. You shouldn’t show the real errors to your end users. public class SignInErrorController : Controller { [HttpPost] public ActionResult Index() { var errorDetails = Request.Form["ErrorDetails"]; var response = AcsErrorResponse.Read(errorDetails); return View("SignInError", response); } } Also keep in mind that the error page is an anonymous page and that you are taking external input. So all the usual input validation applies.

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Data Source Connection Pool Sizing

- by Steve Felts

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:10.0pt; font-family:"Times New Roman","serif";} One of the most time-consuming procedures of a database application is establishing a connection. The connection pooling of the data source can be used to minimize this overhead. That argues for using the data source instead of accessing the database driver directly. Configuring the size of the pool in the data source is somewhere between an art and science – this article will try to move it closer to science. From the beginning, WLS data source has had an initial capacity and a maximum capacity configuration values. When the system starts up and when it shrinks, initial capacity is used. The pool can grow to maximum capacity. Customers found that they might want to set the initial capacity to 0 (more on that later) but didn’t want the pool to shrink to 0. In WLS 10.3.6, we added minimum capacity to specify the lower limit to which a pool will shrink. If minimum capacity is not set, it defaults to the initial capacity for upward compatibility. We also did some work on the shrinking in release 10.3.4 to reduce thrashing; the algorithm that used to shrink to the maximum of the currently used connections or the initial capacity (basically the unused connections were all released) was changed to shrink by half of the unused connections. The simple approach to sizing the pool is to set the initial/minimum capacity to the maximum capacity. Doing this creates all connections at startup, avoiding creating connections on demand and the pool is stable. However, there are a number of reasons not to take this simple approach. When WLS is booted, the deployment of the data source includes synchronously creating the connections. The more connections that are configured in initial capacity, the longer the boot time for WLS (there have been several projects for parallel boot in WLS but none that are available). Related to creating a lot of connections at boot time is the problem of logon storms (the database gets too much work at one time). WLS has a solution for that by setting the login delay seconds on the pool but that also increases the boot time. There are a number of cases where it is desirable to set the initial capacity to 0. By doing that, the overhead of creating connections is deferred out of the boot and the database doesn’t need to be available. An application may not want WLS to automatically connect to the database until it is actually needed, such as for some code/warm failover configurations. There are a number of cases where minimum capacity should be less than maximum capacity. Connections are generally expensive to keep around. They cause state to be kept on both the client and the server, and the state on the backend may be heavy (for example, a process). Depending on the vendor, connection usage may cost money. If work load is not constant, then database connections can be freed up by shrinking the pool when connections are not in use. When using Active GridLink, connections can be created as needed according to runtime load balancing (RLB) percentages instead of by connection load balancing (CLB) during data source deployment. Shrinking is an effective technique for clearing the pool when connections are not in use. In addition to the obvious reason that there times where the workload is lighter, there are some configurations where the database and/or firewall conspire to make long-unused or too-old connections no longer viable. There are also some data source features where the connection has state and cannot be used again unless the state matches the request. Examples of this are identity based pooling where the connection has a particular owner and XA affinity where the connection is associated with a particular RAC node. At this point, WLS does not re-purpose (discard/replace) connections and shrinking is a way to get rid of the unused existing connection and get a new one with the correct state when needed. So far, the discussion has focused on the relationship of initial, minimum, and maximum capacity. Computing the maximum size requires some knowledge about the application and the current number of simultaneously active users, web sessions, batch programs, or whatever access patterns are common. The applications should be written to only reserve and close connections as needed but multiple statements, if needed, should be done in one reservation (don’t get/close more often than necessary). This means that the size of the pool is likely to be significantly smaller then the number of users. If possible, you can pick a size and see how it performs under simulated or real load. There is a high-water mark statistic (ActiveConnectionsHighCount) that tracks the maximum connections concurrently used. In general, you want the size to be big enough so that you never run out of connections but no bigger. It will need to deal with spikes in usage, which is where shrinking after the spike is important. Of course, the database capacity also has a big influence on the decision since it’s important not to overload the database machine. Planning also needs to happen if you are running in a Multi-Data Source or Active GridLink configuration and expect that the remaining nodes will take over the connections when one of the nodes in the cluster goes down. For XA affinity, additional headroom is also recommended. In summary, setting initial and maximum capacity to be the same may be simple but there are many other factors that may be important in making the decision about sizing.

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Data Source Security Part 4

- by Steve Felts

So far, I have covered Client Identity and Oracle Proxy Session features, with WLS or database credentials. This article will cover one more feature, Identify-based pooling. Then, there is one more topic to cover - how these options play with transactions.Identity-based Connection Pooling An identity based pool creates a heterogeneous pool of connections. This allows applications to use a JDBC connection with a specific DBMS credential by pooling physical connections with different DBMS credentials. The DBMS credential is based on either the WebLogic user mapped to a database user or the database user directly, based on the “use database credentials” setting as described earlier. Using this feature enabled with “use database credentials” enabled seems to be what is proposed in the JDBC standard, basically a heterogeneous pool with users specified by getConnection(user, password). The allocation of connections is more complex if Enable Identity Based Connection Pooling attribute is enabled on the data source. When an application requests a database connection, the WebLogic Server instance selects an existing physical connection or creates a new physical connection with requested DBMS identity. The following section provides information on how heterogeneous connections are created:1. At connection pool initialization, the physical JDBC connections based on the configured or default “initial capacity” are created with the configured default DBMS credential of the data source.2. An application tries to get a connection from a data source.3a. If “use database credentials” is not enabled, the user specified in getConnection is mapped to a DBMS credential, as described earlier. If the credential map doesn’t have a matching user, the default DBMS credential is used from the datasource descriptor.3b. If “use database credentials” is enabled, the user and password specified in getConnection are used directly.4. The connection pool is searched for a connection with a matching DBMS credential.5. If a match is found, the connection is reserved and returned to the application.6. If no match is found, a connection is created or reused based on the maximum capacity of the pool: - If the maximum capacity has not been reached, a new connection is created with the DBMS credential, reserved, and returned to the application.- If the pool has reached maximum capacity, based on the least recently used (LRU) algorithm, a physical connection is selected from the pool and destroyed. A new connection is created with the DBMS credential, reserved, and returned to the application. It should be clear that finding a matching connection is more expensive than a homogeneous pool. Destroying a connection and getting a new one is very expensive. If you can use a normal homogeneous pool or one of the light-weight options (client identity or an Oracle proxy connection), those should be used instead of identity based pooling. Regardless of how physical connections are created, each physical connection in the pool has its own DBMS credential information maintained by the pool. Once a physical connection is reserved by the pool, it does not change its DBMS credential even if the current thread changes its WebLogic user credential and continues to use the same connection. To configure this feature, select Enable Identity Based Connection Pooling. See http://docs.oracle.com/cd/E24329_01/apirefs.1211/e24401/taskhelp/jdbc/jdbc_datasources/EnableIdentityBasedConnectionPooling.html "Enable identity-based connection pooling for a JDBC data source" in Oracle WebLogic Server Administration Console Help. You must make the following changes to use Logging Last Resource (LLR) transaction optimization with Identity-based Pooling to get around the problem that multiple users will be accessing the associated transaction table.- You must configure a custom schema for LLR using a fully qualified LLR table name. All LLR connections will then use the named schema rather than the default schema when accessing the LLR transaction table. - Use database specific administration tools to grant permission to access the named LLR table to all users that could access this table via a global transaction. By default, the LLR table is created during boot by the user configured for the connection in the data source. In most cases, the database will only allow access to this user and not allow access to mapped users. Connections within Transactions Now that we have covered the behavior of all of these various options, it’s time to discuss the exception to all of the rules. When you get a connection within a transaction, it is associated with the transaction context on a particular WLS instance. When getting a connection with a data source configured with non-XA LLR or 1PC (using the JTS driver) with global transactions, the first connection obtained within the transaction is returned on subsequent connection requests regardless of the values of username/password specified and independent of the associated proxy user session, if any. The connection must be shared among all users of the connection when using LLR or 1PC. For XA data sources, the first connection obtained within the global transaction is returned on subsequent connection requests within the application server, regardless of the values of username/password specified and independent of the associated proxy user session, if any. The connection must be shared among all users of the connection within a global transaction within the application server/JVM.

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Control HelpButton, HelpRequested, HelpButtonClicked - Instant help for windows Dialog Form components

Instant help for windows dialog components is a great feature and very much known since windows 98. but I saw many many people are not aware it and query on Google to get help, but “help button” for dialogs helps you or your customers to get the help instantly. Every dialog window has help icon if that dialog was coded to enable it. it really helps to know the functionality of the components quickly. For example I was trying to pint a document from acrobat reader and opened printer properties to print the content front and back of the paper. If you observe there is a help button before close button. To get help on options of “Print on Both Sides” you would need to click on help button first and then click on the area on which you want to see the help. above picture shows help text for the options of “Print on Both Sides”. If you would like to get the help using keyboard you can use F1 key. Help button can be displayed only if minimize button and maximize button both are not shown unless you want go with custom buttons. below is the way if you want to get Help button for windows forms. In this sample demo I want to have a checkbox and need to show help when I click on F1 on check box. So I created a form which country check box and help label as show in adjacent picture. Below is the code for your code bind file. using System; using System.Windows.Forms; namespace WindowsFormsApplication1 { public partial classForm1: Form { publicForm1() { InitializeComponent(); } private void Form1_Load(objectsender, EventArgs e) { this.Text = "Help Button Demo Form"; lblHelp.Text = "Press F1 on any component to get Instant Help"; this.HelpButton = true; this.MaximizeBox = false; this.MinimizeBox = false; chkCountry.Tag = "Check or Uncheck Coutry Check Box"; chkCountry.HelpRequested += newHelpEventHandler(chkCountry_HelpRequested); chkCountry.MouseLeave += newEventHandler(chkCountry_MouseLeave); } void chkCountry_HelpRequested(objectsender, HelpEventArgs hlpevent) { ControlrequestingControl = (Control)sender; lblHelp.Text = (string)requestingControl.Tag; hlpevent.Handled = true; } void chkCountry_MouseLeave(objectsender, EventArgs e) { lblHelp.Text = "Press F1 on any component to get Instant Help"; } } } In above code “HelpRequested” is an event will be fired when you click on F1 on Country checkbox. I stored the help information in the checkbox property called “Tag”. You might also maintain a property file to keep help text for each component differently. If you click on F1 when focus is on main form instead on individual component then generally separate help window opens. This can be done using the event “Form.HelpRequested” to open help windows as in below code. this.HelpRequested += newHelpEventHandler(Form1_HelpRequested); voidForm1_HelpRequested(objectsender, HelpEventArgs hlpevent) { frmHelp.Show(); } span.fullpost {display:none;}

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SQL SERVER – Disable Clustered Index and Data Insert

- by pinaldave

Earlier today I received following email. “Dear Pinal, [Removed unrelated content] We looked at your script and found out that in your script of disabling indexes, you have only included non-clustered index during the bulk insert and missed to disabled all the clustered index. Our DBA[name removed] has changed your script a bit and included all the clustered indexes. Since our application is not working. When DBA [name removed] tried to enable clustered indexes again he is facing error incorrect syntax error. We are in deep problem [word replaced] [Removed Identity of organization and few unrelated stuff ]“ I have replied to my client and helped them fixed the problem. What really came to my attention is the concept of disabling clustered index. Let us try to learn a lesson from this experience. In this case, there was no need to disable clustered index at all. I had done necessary work when I was called in to work on tuning project. I had removed unused indexes, created few optimal indexes and wrote a script to disable few selected high cost indexes when bulk insert (and similar) operations are performed. There was another script which rebuild all the indexes as well. The solution worked till they included clustered index in disabling the script. Clustered indexes are in fact original table (or heap) physically ordered (any more things – not scope of this article) according to one or more keys(columns). When clustered index is disabled data rows of the disabled clustered index cannot be accessed. This means there will be no insert possible. When non clustered indexes are disabled all the data related to physically deleted but the definition of the index is kept in the system. Due to the same reason even reorganization of the index is not possible till the clustered index (which was disabled) is rebuild. Now let us come to the second part of the question, regarding receiving the error when clustered index is ‘enabled’. This is very common question I receive on the blog. (The following statement is written keeping the syntax of T-SQL in mind) Clustered indexes can be disabled but can not be enabled, they have to rebuild. It is intuitive to think that something which we have ‘disabled’ can be ‘enabled’ but the syntax for the same is ‘rebuild’. This issue has been explained here: SQL SERVER – How to Enable Index – How to Disable Index – Incorrect syntax near ‘ENABLE’. Let us go over this example where inserting the data is not possible when clustered index is disabled. USE AdventureWorks GO -- Create Table CREATE TABLE [dbo].[TableName]( [ID] [int] NOT NULL, [FirstCol] [varchar](50) NULL, CONSTRAINT [PK_TableName] PRIMARY KEY CLUSTERED ([ID] ASC) ) GO -- Create Nonclustered Index CREATE UNIQUE NONCLUSTERED INDEX [IX_NonClustered_TableName] ON [dbo].[TableName] ([FirstCol] ASC) GO -- Populate Table INSERT INTO [dbo].[TableName] SELECT 1, 'First' UNION ALL SELECT 2, 'Second' UNION ALL SELECT 3, 'Third' GO -- Disable Nonclustered Index ALTER INDEX [IX_NonClustered_TableName] ON [dbo].[TableName] DISABLE GO -- Insert Data should work fine INSERT INTO [dbo].[TableName] SELECT 4, 'Fourth' UNION ALL SELECT 5, 'Fifth' GO -- Disable Clustered Index ALTER INDEX [PK_TableName] ON [dbo].[TableName] DISABLE GO -- Insert Data will fail INSERT INTO [dbo].[TableName] SELECT 6, 'Sixth' UNION ALL SELECT 7, 'Seventh' GO /* Error: Msg 8655, Level 16, State 1, Line 1 The query processor is unable to produce a plan because the index 'PK_TableName' on table or view 'TableName' is disabled. */ -- Reorganizing Index will also throw an error ALTER INDEX [PK_TableName] ON [dbo].[TableName] REORGANIZE GO /* Error: Msg 1973, Level 16, State 1, Line 1 Cannot perform the specified operation on disabled index 'PK_TableName' on table 'dbo.TableName'. */ -- Rebuliding should work fine ALTER INDEX [PK_TableName] ON [dbo].[TableName] REBUILD GO -- Insert Data should work fine INSERT INTO [dbo].[TableName] SELECT 6, 'Sixth' UNION ALL SELECT 7, 'Seventh' GO -- Clean Up DROP TABLE [dbo].[TableName] GO I hope this example is clear enough. There were few additional posts I had written years ago, I am listing them here. SQL SERVER – Enable and Disable Index Non Clustered Indexes Using T-SQL SQL SERVER – Enabling Clustered and Non-Clustered Indexes – Interesting Fact Reference : Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, SQL, SQL Authority, SQL Constraint and Keys, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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AJAX Control Toolkit - Globalization (Language)

- by Guilherme Cardoso

For those who use AjaxToolKit controls presenting a language-dependent data (the CalendarExternder with the names of the months and weeks, for example) you can change the language to be presented in a simple way. In Web.Config let's define the primary culture as follows: < system . web > <System. Web> < globalization uiCulture = "pt-pt" culture = "pt-pt" /> <Globalization UICulture = "en-us" culture = "en-us" /> ... ... In this example I'm using Portuguese. To finish it is necessary to change our ScriptManager. Be it the ToolScriptManager AjaxToolKit or belonging to the ScriptManager's framework. NET, the properties as a vibrant and true are the EnableScriptGlobalization EnableScriptLocalization. < cc1 : ToolkitScriptManager ID = "ToolkitScriptManager1" runat = "server" EnableScriptGlobalization = "true" EnableScriptLocalization = "true" > <Cc1: ToolkitScriptManager ID = "ToolkitScriptManager1" runat = "server" EnableScriptGlobalization = "true" EnableScriptLocalization = "true"> </ cc1 : ToolkitScriptManager > </ Cc1: ToolkitScriptManager> or < asp : ScriptManager ID = "ScriptManager1" runat = "server" EnableScriptGlobalization = "true" EnableScriptLocalization = "true" > <Asp: ScriptManager ID = "ScriptManager1" runat = "server" EnableScriptGlobalization = "true" EnableScriptLocalization = "true"> </ asp : ScriptManager > </ Asp: ScriptManager> Like hus we use the controls on AjaxToolKit, always using the Portuguese language. It is important that AjaxTookKit is updated to avoid shortages or errors in translation, though I have not updated by this error in the ModalPopup the latest version, and any controls that I have used are translated correctly.

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Recover Lost Form Data in Firefox

- by Asian Angel

Have you ever filled in a text area or form in a webpage and something happens before you can finish it? If you like the idea of recovering that lost data then you will want to have a look at the Lazarus: Form Recovery extension for Firefox. Lazarus: Form Recovery in Action For our first example we chose the comment text box area for one of the articles here at the website. As you can see we were not finished typing in the whole comment yet… Notice the “Lazarus Icon” in the lower right corner. Note: We simulated accidental tab closures for our two examples. After getting our webpage opened up again all of our text was gone. Right clicking within the text area showed two options available…”Recover Text & Recover Form”. Notice that our lost text was listed as a “sub menu”…this could be extremely useful in matching up the appropriate text to the correct webpage if you had multiple tabs open before something happened. Click on the correct text listing to insert it. So easy to finish writing our comment without having to start from zero again. In our second example we chose the sign-up form page for the website. As before we were not finished filling in the form… Getting the webpage opened back up showed the same problem as before…all the entered text was lost. This time we right clicked in the browser window area and there was that wonderful “Recover Form Command” waiting to be used. One click and… All of our lost form data was back and we were able to finish filling in the form. For those who may be interested you can disable Lazarus: Form Recovery on individual websites using the “Context Menu” for the “Status Bar Icon” Options There are three sections in the options and you should take a quick look through them to make any desired modifications in how Lazarus: Form Recovery functions. The first “Options Area” focuses on display/access for the extension. The second “Options Area” allows you to expand the type of data retained, enable removal of data within a given time frame, set up a password, disable search indexing, and enable form data retention while in “Private Browsing Mode”. The third “Options Area” focuses on the Lazarus database itself. Conclusion If you have ever lost text area or form data before then you know how much time could be lost in starting over. Lazarus: Form Recovery helps provide a nice backup solution to get you up and running once again with a minimum of effort. Links Download the Lazarus: Form Recovery extension (Mozilla Add-ons) Download the Lazarus: Form Recovery extension (Extension Homepage) Similar Articles Productive Geek Tips Quick Tip: Resize Any Textbox or Textarea in FirefoxWhy Doesn’t AutoComplete Always Work in Firefox?Pass Variables between Windows Forms Windows without ShowDialog()Using Secure Login in FirefoxAdd Search Forms to the Firefox Search Bar TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Looking for Good Windows Media Player 12 Plug-ins? Find Out the Celebrity You Resemble With FaceDouble Whoa ! Use Printflush to Solve Printing Problems Icelandic Volcano Webcams Open Multiple Links At One Go

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SQL – Step by Step Guide to Download and Install NuoDB – Getting Started with NuoDB

- by Pinal Dave

Let us take a look at the application you own at your business. If you pay attention to the underlying database for that application you will be amazed. Every successful business these days processes way more data than they used to process before. The number of transactions and the amount of data is growing at an exponential rate. Every single day there is way more data to process than before. Big data is no longer a concept; it is now turning into reality. If you look around there are so many different big data solutions and it can be a quite difficult task to figure out where to begin. Personally, I have been experimenting with a lot of different solutions which allow my database to scale immediately without much hassle while maintaining optimal database performance. There are for sure some solutions out there, but for many I even have to learn their specific language and there is a lot of new exploration to do. Honestly, what I prefer is a product, which works with the language I know (SQL) and follows all the RDBMS concepts which I am familiar with (ACID etc.). NuoDB is one such solution. It is an operational NewSQL database built on a patented emergent architecture with full support for SQL and ACID guarantees. In this blog post, I will explore how one can download and install NuoDB database. Step 1: Follow me and go to the NuoDB download page. Simply fill out the form, accept the online license agreement, and you will be taken directly to a page where you can select any platform you prefer to install NuoDB. In my example below, I select the Windows 64-bit platform as it is one of the most popular NuoDB platforms. (You can also run NuoDB on Amazon Web Services but I prefer to install it on my local machine for the purposes of this blog). Step 2: Once you have downloaded the NuoDB installer, double click on it to install it on the Windows platform. Here is the enlarged the icon of the installer. Step 3: Follow the wizard installation, as it is pretty straight forward and easy to do so. I have selected all the options to install as the overall installation is very simple and it does not take up much space. I have installed it on my C drive but you can select your preferred drive. It is quite possible that if you do not have 64 bit Java, it will throw following error. If you face following error, I suggest you to download 64-bit Java from here. Make sure that you download 64-bit Java from following link: http://java.com/en/download/manual.jsp If already have Java 64-bit installed, you can continue with the installation as described in following image. Otherwise, install Java and start from with Step 1. As in my case, I already have 64-bit Java installed – and you won’t believe me when I say that the entire installation of NuoDB only took me around 90 seconds. Click on Finish to end to exit the installation. Step 4: Once the installation is successful, NuoDB will automatically open the following two tabs – Console and DevCenter — in your preferred browser. On the Console tab you can explore various components of the NuoDB solution, e.g. QuickStart, Admin, Explorer, Storefront and Samples. We will see various components and their usage in future blog posts. If you follow these steps in this post, which I have followed to install NuoDB, you will agree that the installation of NuoDB is extremely smooth and it was indeed a pleasure to install a database product with such ease. If you have installed other database products in the past, you will absolutely agree with me. So download NuoDB and install it today, and in tomorrow’s blog post I will take the installation to the next level. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Big Data, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: NuoDB

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Using the Script Component as a Conditional Split

This is a quick walk through on how you can use the Script Component to perform Conditional Split like behaviour, splitting your data across multiple outputs. We will use C# code to decide what does flows to which output, rather than the expression syntax of the Conditional Split transformation. Start by setting up the source. For my example the source is a list of SQL objects from sys.objects, just a quick way to get some data: SELECT type, name FROM sys.objects type name S syssoftobjrefs F FK_Message_Page U Conference IT queue_messages_23007163 Shown above is a small sample of the data you could expect to see. Once you have setup your source, add the Script Component, selecting Transformation when prompted for the type, and connect it up to the source. Now open the component, but don’t dive into the script just yet. First we need to select some columns. Select the Input Columns page and then select the columns we want to uses as part of our filter logic. You don’t need to choose columns that you may want later, this is just the columns used in the script itself. Next we need to add our outputs. Select the Inputs and Outputs page.You get one by default, but we need to add some more, it wouldn’t be much of a split otherwise. For this example we’ll add just one more. Click the Add Output button, and you’ll see a new output is added. Now we need to set some properties, so make sure our new Output 1 is selected. In the properties grid change the SynchronousInputID property to be our input Input 0, and change the ExclusionGroup property to 1. Now select Ouput 0 and change the ExclusionGroup property to 2. This value itself isn’t important, provided each output has a different value other than zero. By setting this property on both outputs it allows us to split the data down one or the other, making each exclusive. If we left it to 0, that output would get all the rows. It can be a useful feature allowing you to copy selected rows to one output whilst retraining the full set of data in the other. Now we can go back to the Script page and start writing some code. For the example we will do a very simple test, if the value of the type column is U, for user table, then it goes down the first output, otherwise it ends up in the other. This mimics the exclusive behaviour of the conditional split transformation. public override void Input0_ProcessInputRow(Input0Buffer Row) { // Filter all user tables to the first output, // the remaining objects down the other if (Row.type.Trim() == "U") { Row.DirectRowToOutput0(); } else { Row.DirectRowToOutput1(); } } The code itself is very simple, a basic if clause that determines which of the DirectRowToOutput methods we call, there is one for each output. Of course you could write a lot more code to implement some very complex logic, but the final direction is still just a method call. If we now close the script component, we can hook up the outputs and test the package. Your numbers will vary depending on the sample database but as you can see we have clearly split out input data into two outputs. As a final tip, when adding the outputs I would normally rename them, changing the Name in the Properties grid. This means the generated methods follow the pattern as do the path label shown on the design surface, making everything that much easier to recognise.

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Problems with 3D Array for Voxel Data

- by Sean M.

I'm trying to implement a voxel engine in C++ using OpenGL, and I've been working on the rendering of the world. In order to render, I have a 3D array of uint16's that hold that id of the block at the point. I also have a 3D array of uint8's that I am using to store the visibility data for that point, where each bit represents if a face is visible. I have it so the blocks render and all of the proper faces are hidden if needed, but all of the blocks are offset by a power of 2 from where they are stored in the array. So the block at [0][0][0] is rendered at (0, 0, 0), and the block at 11 is rendered at (1, 1, 1), but the block at [2][2][2] is rendered at (4, 4, 4) and the block at [3][3][3] is rendered at (8, 8, 8), and so on and so forth. This is the result of drawing the above situation: I'm still a little new to the more advanced concepts of C++, like triple pointers, which I'm using for the 3D array, so I think the error is somewhere in there. This is the code for creating the arrays: uint16*** _blockData; //Contains a 3D array of uint16s that are the ids of the blocks in the region uint8*** _visibilityData; //Contains a 3D array of bytes that hold the visibility data for the faces //Allocate memory for the world data _blockData = new uint16**[REGION_DIM]; for (int i = 0; i < REGION_DIM; i++) { _blockData[i] = new uint16*[REGION_DIM]; for (int j = 0; j < REGION_DIM; j++) _blockData[i][j] = new uint16[REGION_DIM]; } //Allocate memory for the visibility _visibilityData = new uint8**[REGION_DIM]; for (int i = 0; i < REGION_DIM; i++) { _visibilityData[i] = new uint8*[REGION_DIM]; for (int j = 0; j < REGION_DIM; j++) _visibilityData[i][j] = new uint8[REGION_DIM]; } Here is the code used to create the block mesh for the region: //Check if the positive x face is visible, this happens for every face //Block::VERT_X_POS is just an array of non-transformed cube verts for one face //These checks are in a triple loop, which goes over every place in the array if (_visibilityData[x][y][z] & 0x01 > 0) { _vertexData->AddData(&(translateVertices(Block::VERT_X_POS, x, y, z)[0]), sizeof(Block::VERT_X_POS)); } //This is a seperate method, not in the loop glm::vec3* translateVertices(const glm::vec3 data[], uint16 x, uint16 y, uint16 z) { glm::vec3* copy = new glm::vec3[6]; memcpy(&copy, &data, sizeof(data)); for(int i = 0; i < 6; i++) copy[i] += glm::vec3(x, -y, z); //Make +y go down instead return copy; } I cannot see where the blocks may be getting offset by more than they should be, and certainly not why the offsets are a power of 2. Any help is greatly appreciated. Thanks.

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What's the proper way to merge two projects in source control software

- by Mallow

I'm using Fossil-SCM to maintain my projects. Since I don't work in a team I usually have just a very linear branch of development: 1.0 - 1.1 - 1.2 I'm wondering what the procedure is when you have one project who's task is about to be given to a related project. And thereby rendering the first project obsolete. Although I tend to rewrite most of my code if I don't remember having already written it, I still would like to keep the code archived. And I'ld rather not have a fossil repo that just is dead. Can I merge it? Is that the proper way of handling this? For example the code was extracting data from an excel file in order to format an HTML page. Now, I've convinced my employer to move their excel spreadsheet into a database to decrease redundancy, increase efficiency and yaddy yadda. Since I can now make logical queries that don't have to jump hoops to preform using the database I won't need the extra vbs files that originally manipulated the excel file. Technically I would be porting part of the existing code into the current new project. Since it already has it's own trunk, would it be advisable to combine the trunk of a different project to this one, and how would I do that exactly?? SO I guess my tree would look like this, and I haven't seen examples of software branching that resemble this inverted tree before so I'm wondering what the norm for a situation like this?

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How do I retrieve the values entered in a nested control added dynamically to a webform?

- by Front Runner

I have a date range user control with two calendar controls: DateRange.ascx public partial class DateRange { public string FromDate { get { return calFromDate.Text; } set { calFromDate.Text = value; } } public string ToDate { get { return calToDate.Date; } set { calToDate.Text = value; } } } I have another user control in which DateRange control is loaded dynamically: ParamViewer.ascx public partial class ParamViewer { public void Setup(string sControlName) { //Load parameter control Control control = LoadControl("DateRange.ascx"); Controls.Add(control); DateRange dteFrom = (DateRange)control.FindControl("calFromDate"); DateRange dteTo = (DateRange)control.FindControl("calToDate"); } } I have a main page webForm1.aspx where ParamViewer.ascx is added When user enter the dates, they're set correctly in DateRange control. My question is how how do I retrieve the values entered in DateRange (FromDate and ToDate)control from btnSubmit_Click event in webForm1? Please advise. Thank you in advance.

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Customize Team Build 2010 – Part 13: Get control over the Build Output

In the series the following parts have been published Part 1: Introduction Part 2: Add arguments and variables Part 3: Use more complex arguments Part 4: Create your own activity Part 5: Increase AssemblyVersion Part 6: Use custom type for an argument Part 7: How is the custom assembly found Part 8: Send information to the build log Part 9: Impersonate activities (run under other credentials) Part 10: Include Version Number in the Build Number Part 11: Speed up opening my build process template Part 12: How to debug my custom activities Part 13: Get control over the Build Output Part 14: Execute a PowerShell script Part 15: Fail a build based on the exit code of a console application In the part 8, I have explained how you can add informational messages, warnings or errors to the build output. If you want to integrate with other lines of text to the build output, you need to do more. This post will show you how you can add extra steps, additional information and hyperlinks to the build output. UPDATE 13-12-2010: Thanks to Jason Pricket, it is now also possible to not show every activity in the build log. This is really useful when you are doing for-loops in your template. To see how you can do that, check out Jason's blog: http://blogs.msdn.com/b/jpricket/archive/2010/12/09/tfs-2010-making-your-build-log-less-noisy.aspx Add an hyperlink to the end of the build output Lets start with a simple example of how you can adjust the build output. In this case we are going to add at the end of the build output an hyperlink where a user can click on to for example start the deployment to the test environment. In part 4 you can find information how you can create a custom activity To add information to the build output, you need the BuildDetail. This value is a variable in your xaml and is thus easily transferable to you custom activity. Besides the BuildDetail the user has also to specify the text and the url that has to be added to the end of the build output. The following code segment shows you how you can achieve this. [BuildActivity(HostEnvironmentOption.All)] public sealed class AddHyperlinkToBuildOutput : CodeActivity { [RequiredArgument] public InArgument<IBuildDetail> BuildDetail { get; set; } [RequiredArgument] public InArgument<string> DisplayText { get; set; } [RequiredArgument] public InArgument<string> Url { get; set; } protected override void Execute(CodeActivityContext context) { // Obtain the runtime value of the input arguments IBuildDetail buildDetail = context.GetValue(this.BuildDetail); string displayText = context.GetValue(this.DisplayText); string url = context.GetValue(this.Url); // Add the hyperlink buildDetail.Information.AddExternalLink(displayText, new Uri(url)); buildDetail.Information.Save(); } } If you add this activity to somewhere in your build process template (within the scope Run on Agent), you will get the following build output Add an line of text to the build output The next challenge is to add this kind of output not only to the end of the build output but at the step that is currently executing. To be able to do this, you need the current node in the build output. The following code shows you how you can achieve this. First you need to get the current activity tracking, which you can get with the following line of code IActivityTracking currentTracking = context.GetExtension<IBuildLoggingExtension>().GetActivityTracking(context); Then you can create a new node and set its type to Activity Tracking Node (so copy it from the current node) and do nice things with the node. IBuildInformationNode childNode = currentTracking.Node.Children.CreateNode(); childNode.Type = currentTracking.Node.Type; childNode.Fields.Add("DisplayText", "This text is displayed."); You can also add a build step to display progress IBuildStep buildStep = childNode.Children.AddBuildStep("Custom Build Step", "This is my custom build step"); buildStep.FinishTime = DateTime.Now.AddSeconds(10); buildStep.Status = BuildStepStatus.Succeeded; Or you can add an hyperlink to the node childNode.Children.AddExternalLink("My link", new Uri(http://www.ewaldhofman.nl)); When you combine this together you get the following result in the build output You can download the full solution at BuildProcess.zip. It will include the sources of every part and will continue to evolve.

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Customize Team Build 2010 – Part 13: Get control over the Build Output

In the series the following parts have been published Part 1: Introduction Part 2: Add arguments and variables Part 3: Use more complex arguments Part 4: Create your own activity Part 5: Increase AssemblyVersion Part 6: Use custom type for an argument Part 7: How is the custom assembly found Part 8: Send information to the build log Part 9: Impersonate activities (run under other credentials) Part 10: Include Version Number in the Build Number Part 11: Speed up opening my build process template Part 12: How to debug my custom activities Part 13: Get control over the Build Output Part 14: Execute a PowerShell script Part 15: Fail a build based on the exit code of a console application In the part 8, I have explained how you can add informational messages, warnings or errors to the build output. If you want to integrate with other lines of text to the build output, you need to do more. This post will show you how you can add extra steps, additional information and hyperlinks to the build output. Add an hyperlink to the end of the build output Lets start with a simple example of how you can adjust the build output. In this case we are going to add at the end of the build output an hyperlink where a user can click on to for example start the deployment to the test environment. In part 4 you can find information how you can create a custom activity To add information to the build output, you need the BuildDetail. This value is a variable in your xaml and is thus easily transferable to you custom activity. Besides the BuildDetail the user has also to specify the text and the url that has to be added to the end of the build output. The following code segment shows you how you can achieve this. [BuildActivity(HostEnvironmentOption.All)] public sealed class AddHyperlinkToBuildOutput : CodeActivity { [RequiredArgument] public InArgument<IBuildDetail> BuildDetail { get; set; } [RequiredArgument] public InArgument<string> DisplayText { get; set; } [RequiredArgument] public InArgument<string> Url { get; set; } protected override void Execute(CodeActivityContext context) { // Obtain the runtime value of the input arguments IBuildDetail buildDetail = context.GetValue(this.BuildDetail); string displayText = context.GetValue(this.DisplayText); string url = context.GetValue(this.Url); // Add the hyperlink buildDetail.Information.AddExternalLink(displayText, new Uri(url)); buildDetail.Information.Save(); } } If you add this activity to somewhere in your build process template (within the scope Run on Agent), you will get the following build output Add an line of text to the build output The next challenge is to add this kind of output not only to the end of the build output but at the step that is currently executing. To be able to do this, you need the current node in the build output. The following code shows you how you can achieve this. First you need to get the current activity tracking, which you can get with the following line of code IActivityTracking currentTracking = context.GetExtension<IBuildLoggingExtension>().GetActivityTracking(context); Then you can create a new node and set its type to Activity Tracking Node (so copy it from the current node) and do nice things with the node. IBuildInformationNode childNode = currentTracking.Node.Children.CreateNode(); childNode.Type = currentTracking.Node.Type; childNode.Fields.Add("DisplayText", "This text is displayed."); You can also add a build step to display progress IBuildStep buildStep = childNode.Children.AddBuildStep("Custom Build Step", "This is my custom build step"); buildStep.FinishTime = DateTime.Now.AddSeconds(10); buildStep.Status = BuildStepStatus.Succeeded; Or you can add an hyperlink to the node childNode.Children.AddExternalLink("My link", new Uri(http://www.ewaldhofman.nl)); When you combine this together you get the following result in the build output You can download the full solution at BuildProcess.zip. It will include the sources of every part and will continue to evolve.

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