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  • PHP PSR-0 + several namespaces in one file and autoload

    - by Nemoden
    I've been thinking for a while about defining several namespaces in one php file and so, having several classes inside this file. Suppose, I want to implement something like Doctrine\ORM\Query\Expr: Expr.php Expr |-- Andx.php |-- Base.php |-- Comparison.php |-- Composite.php |-- From.php |-- Func.php |-- GroupBy.php |-- Join.php |-- Literal.php |-- Math.php |-- OrderBy.php |-- Orx.php `-- Select.php It would be nice if I had all of this in one file - Expr.php: namespace Doctrine\ORM\Query; class Expr { // code } namespace Doctrine\ORM\Query\Expr; class Func { // code } // etc... What I'm thinking of is directories naming convention and, unlike PSR-0 having several classes and namespaces in one file. It's best explained by the code: ls Doctrine/orm/query Expr.php that's it - only Expr.php Since Expr.php is somewhat I call a "meta-namespace" for Expr\Func, it make sense to place all the classes inside Expr.php (as shown above). So, the vendor name is still starts with an uppercased letter (Doctrine) and the other parts of namespace start with lowercased letter. We can write an autoload so it would respect this notion: function load_class($class) { if (class_exists($class)) { return true; } $tokenized_path = explode(array("_", "\\"), DIRECTORY_SEPARATOR, $class); // array('Doctrine', 'orm', 'query', 'Expr', 'Func'); // ^^^^ // first, we are looking for first uppercased namespace part // and if it's not last (not the class name), we use it as a filename // and wiping away the rest to compose a path to a file we need to include if (FALSE !== ($meta_class_index = find_meta_class($tokenized_path))) { $new_tokenized_path = array_slice($tokenized_path, 0, $meta_class_index); $path_to_class = implode(DIRECTORY_SEPARATOR, $new_tokenized_path); } else { // no meta class found $path_to_class = implode(DIRECTORY_SEPARATOR, $tokenized_path); } if (file_exists($path_to_class.'.php')) { require_once $path_to_class.'.php'; } return false; } Another reason to do so is to reduce a number of php files scattered among directories. Usually you check file existence before you require a file to fail gracefully: file_exists($path_to_class.'.php'); If you take a look at actual Doctrine\ORM\Query\Expr code, you'll see they use all of the "inner-classes", so you actually do: file_exists("/path/to/Doctrine/ORM/Query/Expr.php"); file_exists("/path/to/Doctrine/ORM/Query/Expr/AndX.php"); file_exists("/path/to/Doctrine/ORM/Query/Expr/Base.php"); file_exists("/path/to/Doctrine/ORM/Query/Expr/Comparison.php"); file_exists("/path/to/Doctrine/ORM/Query/Expr/Composite.php"); file_exists("/path/to/Doctrine/ORM/Query/Expr/From.php"); file_exists("/path/to/Doctrine/ORM/Query/Expr/Func.php"); file_exists("/path/to/Doctrine/ORM/Query/Expr/GroupBy.php"); file_exists("/path/to/Doctrine/ORM/Query/Expr/Join.php"); file_exists("/path/to/Doctrine/ORM/Query/Expr/Literal.php"); file_exists("/path/to/Doctrine/ORM/Query/Expr/Math.php"); file_exists("/path/to/Doctrine/ORM/Query/Expr/OrderBy.php"); file_exists("/path/to/Doctrine/ORM/Query/Expr/Orx.php"); file_exists("/path/to/Doctrine/ORM/Query/Expr/Select.php"); in your autoload which causes quite a few I/O reads. Isn't it too much to check on each user's hit? I'm just putting this on a discussion. I want to hear from another PHP programmers what do they think of it. And, of course, if you have a silver bullet addressing this problems I've designated here, please share. I also have been thinking if my vogue question fits here and according to the FAQ it seems like this question addresses "software architecture" problem slash proposal. I'm sorry if my scribble may seem a bit clunky :) Thanks.

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  • Challenge 19 – An Explanation of a Query

    - by Dave Ballantyne
    I have received a number of requests for an explanation of my winning query of TSQL Challenge 19. This involved traversing a hierarchy of employees and rolling a count of orders from subordinates up to superiors. The first concept I shall address is the hierarchyId , which is constructed within the CTE called cteTree.   cteTree is a recursive cte that will expand the parent-child hierarchy of the personnel in the table @emp.  One useful feature with a recursive cte is that data can be ‘passed’ from the parent to the child data.  The hierarchyId column is similar to the hierarchyId data type that was introduced in SQL Server 2008 and represents the position of the person within the organisation. Let us start with a simplistic example Albert manages Bob and Eddie.  Bob manages Carl and Dave. The hierarchyId will represent each person’s position in this relationship in a single field.  In this simple example we could append the userID together into a varchar field as detailed below. This will enable us to select a branch of the tree by filtering using Where hierarchyId  ‘1,2%’ to select Bob and all his subordinates.  Naturally, this is not comprehensive enough to provide a full solution, but as opposed to concatenating the Id’s together into a varchar datatyped column, we can apply the same theory to a varbinary.  By CASTing the ID’s into a datatype of varbinary(4) ,4 is used as 4 bytes of data are used to store an integer and building a hierarchyId  from those.  For example: The important point to bear in mind for later in the query is that the binary data generated is 'byte order comparable'. ie We can ORDER a dataset with it and the resulting data, will be in the order required. Now, would probably be a good time to download the example file and, after the cte ‘cteTree’, uncomment the line ‘select * from cteTree’.  Mark this and all prior code and execute.  This will show you how this theory directly relates to the actual challenge data.  The only deviation from the above, is that instead of using the ID of an employee, I have used the row_number() ranking function to order each level by LastName,Firstname.  This enables me to order by the HierarchyId in the final result set so that the result set is in the required order. Your output should be something like the below.  Notice also the ‘Level’ Column that contains the depth that the employee is within the tree.  I would encourage you to ‘play’ with the query, change the order in the row_number() or the length of the cast in the hierarchyId to see how that effects the outcome.  The next cte, ‘cteTreeWithOrderCount’, is a join between cteTree and the @ord table, and COUNT’s the number of orders per employee.  A LEFT JOIN is employed here to account for the occasion where an employee has made no sales.   Executing a ‘Select * from cteTreeWithOrderCount’ will return the result set as below.  The order here is unimportant as this is only a staging point of the data and only the final result set in a cte chain needs an Order by clause, unless TOP is utilised. cteExplode joins the above result set to the tally table (Nums) for Level Occurances.  So, if level is 2 then 2 rows are required.  This is done to expand the dataset, to create a new column (PathInc), which is the (n+1) integers contained within the heirarchyid.  For example, with the data for Robert King as given above, the below 3 rows will be returned. From this you can see that the pathinc column now contains the values for Andrew Fuller and Steven Buchanan who are Robert King’s superiors within the tree.    Finally cteSumUp, sums the orders for each person and their subordinates using the PathInc generated above, and the final select does the final simple mathematics and filters to restrict the result set to only the ‘original’ row per employee.

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  • Spending the summer at camp… Web Camp, that is

    - by Jon Galloway
    Microsoft is sponsoring a series of Web Camps this summer. They’re a series of free two day events being held worldwide, and I’m really excited about being taking part. The camp is targeted at a broad range of developer background and experience. Content builds from 101 level introductory material to 200-300 level coverage, but we hit some advanced bits (e.g. MVC 2 features, jQuery templating, IIS 7 features, etc.) that advanced developers may not yet have seen. We start with a lap around ASP.NET & Web Forms, then move on to building and application with ASP.NET MVC 2, jQuery, and Entity Framework 4, and finally deploy to IIS. I got to spend some time working with James before the first Web Camp refining the content, and I think he’s packed about as much goodness into the time available as is scientifically possible. The content is really code focused – we start with File/New Project and spend the day building a real, working application. The second day of the Web Camp provides attendees an opportunity to get hands on. There are two options: Join a team and build an application of your choice Work on a lab or tutorial James Senior and I kicked off the fun with the first Web Camp in Toronto a few weeks ago. It was sold out, lots of fun, and by all accounts a great way to spend two days. I’m really enthusiastic about the format. Rather than just listening to speakers and then forgetting everything in a few days, attendees actually build something of their choice. They get an opportunity to pitch projects they’re interested in, form teams, and build it – getting experience with “real world” problems, with all the help they need from experienced developers. James got help on the second day practical part from the good folks that run Startup Weekend. Startup Weekend is a fantastic program that gathers developers together to build cool apps in a weekend, so their input on how to organize successful teams for weekend projects was invaluable. Nick Seguin joined us in Toronto, and in addition to making sure that everything flowed smoothly, he just added a lot of fun and excitement to the event, reminding us all about how much fun it is to come up with a cool idea and just build it. In addition to the Toronto camp, I’ll be at the Mountain View, London, Munich, and New York camps over the next month. London is sold out, but the rest still have space available, so come join us! Here’s the full list, with the ones I’ll be at bolded because - you know - it’s my blog. The the whole speaker list is great, including Scott Guthrie, Scott Hanselman, James Senior, Rachel Appel, Dan Wahlin, and Christian Wenz. Toronto May 7-8 (James Senior and I were thrown out on our collective ears) Moscow May 19 Beijing May 21-22 Shanghai May 24-25 Mountain View May 27-28 (I’m speaking with Rachel Appel) Sydney May 28-29 Singapore June 04-05 London June 04-05 (I’m speaking with Christian Wenz – SOLD OUT) Munich June 07-08 (I’m speaking with Christian Wenz) Chicago June 11-12 Redmond, WA June 18-19 New York June 25-26 (I’m speaking with Dan Wahlin) Come say hi!

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  • SQL SERVER – Puzzle – Statistics are not Updated but are Created Once

    - by pinaldave
    After having excellent response to my quiz – Why SELECT * throws an error but SELECT COUNT(*) does not?I have decided to ask another puzzling question to all of you. I am running this test on SQL Server 2008 R2. Here is the quick scenario about my setup. Create Table Insert 1000 Records Check the Statistics Now insert 10 times more 10,000 indexes Check the Statistics – it will be NOT updated Note: Auto Update Statistics and Auto Create Statistics for database is TRUE Expected Result – Statistics should be updated – SQL SERVER – When are Statistics Updated – What triggers Statistics to Update Now the question is why the statistics are not updated? The common answer is – we can update the statistics ourselves using UPDATE STATISTICS TableName WITH FULLSCAN, ALL However, the solution I am looking is where statistics should be updated automatically based on algorithm mentioned here. Now the solution is to ____________________. Vinod Kumar is not allowed to take participate over here as he is the one who has helped me to build this puzzle. I will publish the solution on next week. Please leave a comment and if your comment consist valid answer, I will publish with due credit. Here is the script to reproduce the scenario which I mentioned. -- Execution Plans Difference -- Create Sample Database CREATE DATABASE SampleDB GO USE SampleDB GO -- Create Table CREATE TABLE ExecTable (ID INT, FirstName VARCHAR(100), LastName VARCHAR(100), City VARCHAR(100)) GO -- Insert One Thousand Records -- INSERT 1 INSERT INTO ExecTable (ID,FirstName,LastName,City) SELECT TOP 1000 ROW_NUMBER() OVER (ORDER BY a.name) RowID, 'Bob', CASE WHEN  ROW_NUMBER() OVER (ORDER BY a.name)%2 = 1 THEN 'Smith' ELSE 'Brown' END, CASE WHEN ROW_NUMBER() OVER (ORDER BY a.name)%20 = 1 THEN 'New York' WHEN  ROW_NUMBER() OVER (ORDER BY a.name)%20 = 5 THEN 'San Marino' WHEN  ROW_NUMBER() OVER (ORDER BY a.name)%20 = 3 THEN 'Los Angeles' WHEN  ROW_NUMBER() OVER (ORDER BY a.name)%20 = 7 THEN 'La Cinega' WHEN  ROW_NUMBER() OVER (ORDER BY a.name)%20 = 13 THEN 'San Diego' WHEN  ROW_NUMBER() OVER (ORDER BY a.name)%20 = 17 THEN 'Las Vegas' ELSE 'Houston' END FROM sys.all_objects a CROSS JOIN sys.all_objects b GO -- Display statistics of the table - none listed sp_helpstats N'ExecTable', 'ALL' GO -- Select Statement SELECT FirstName, LastName, City FROM ExecTable WHERE City  = 'New York' GO -- Display statistics of the table sp_helpstats N'ExecTable', 'ALL' GO -- Replace your Statistics over here -- NOTE: Replace your _WA_Sys with stats from above query DBCC SHOW_STATISTICS('ExecTable', _WA_Sys_00000004_7D78A4E7); GO -------------------------------------------------------------- -- Round 2 -- Insert Ten Thousand Records -- INSERT 2 INSERT INTO ExecTable (ID,FirstName,LastName,City) SELECT TOP 10000 ROW_NUMBER() OVER (ORDER BY a.name) RowID, 'Bob', CASE WHEN  ROW_NUMBER() OVER (ORDER BY a.name)%2 = 1 THEN 'Smith' ELSE 'Brown' END, CASE WHEN ROW_NUMBER() OVER (ORDER BY a.name)%20 = 1 THEN 'New York' WHEN  ROW_NUMBER() OVER (ORDER BY a.name)%20 = 5 THEN 'San Marino' WHEN  ROW_NUMBER() OVER (ORDER BY a.name)%20 = 3 THEN 'Los Angeles' WHEN  ROW_NUMBER() OVER (ORDER BY a.name)%20 = 7 THEN 'La Cinega' WHEN  ROW_NUMBER() OVER (ORDER BY a.name)%20 = 13 THEN 'San Diego' WHEN  ROW_NUMBER() OVER (ORDER BY a.name)%20 = 17 THEN 'Las Vegas' ELSE 'Houston' END FROM sys.all_objects a CROSS JOIN sys.all_objects b GO -- Select Statement SELECT FirstName, LastName, City FROM ExecTable WHERE City  = 'New York' GO -- Display statistics of the table sp_helpstats N'ExecTable', 'ALL' GO -- Replace your Statistics over here -- NOTE: Replace your _WA_Sys with stats from above query DBCC SHOW_STATISTICS('ExecTable', _WA_Sys_00000004_7D78A4E7); GO -- You will notice that Statistics are still updated with 1000 rows -- Clean up Database DROP TABLE ExecTable GO USE MASTER GO ALTER DATABASE SampleDB SET SINGLE_USER WITH ROLLBACK IMMEDIATE; GO DROP DATABASE SampleDB GO Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Index, SQL Performance, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: SQL Statistics, Statistics

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  • Replication Services in a BI environment

    - by jorg
    In this blog post I will explain the principles of SQL Server Replication Services without too much detail and I will take a look on the BI capabilities that Replication Services could offer in my opinion. SQL Server Replication Services provides tools to copy and distribute database objects from one database system to another and maintain consistency afterwards. These tools basically copy or synchronize data with little or no transformations, they do not offer capabilities to transform data or apply business rules, like ETL tools do. The only “transformations” Replication Services offers is to filter records or columns out of your data set. You can achieve this by selecting the desired columns of a table and/or by using WHERE statements like this: SELECT <published_columns> FROM [Table] WHERE [DateTime] >= getdate() - 60 There are three types of replication: Transactional Replication This type replicates data on a transactional level. The Log Reader Agent reads directly on the transaction log of the source database (Publisher) and clones the transactions to the Distribution Database (Distributor), this database acts as a queue for the destination database (Subscriber). Next, the Distribution Agent moves the cloned transactions that are stored in the Distribution Database to the Subscriber. The Distribution Agent can either run at scheduled intervals or continuously which offers near real-time replication of data! So for example when a user executes an UPDATE statement on one or multiple records in the publisher database, this transaction (not the data itself) is copied to the distribution database and is then also executed on the subscriber. When the Distribution Agent is set to run continuously this process runs all the time and transactions on the publisher are replicated in small batches (near real-time), when it runs on scheduled intervals it executes larger batches of transactions, but the idea is the same. Snapshot Replication This type of replication makes an initial copy of database objects that need to be replicated, this includes the schemas and the data itself. All types of replication must start with a snapshot of the database objects from the Publisher to initialize the Subscriber. Transactional replication need an initial snapshot of the replicated publisher tables/objects to run its cloned transactions on and maintain consistency. The Snapshot Agent copies the schemas of the tables that will be replicated to files that will be stored in the Snapshot Folder which is a normal folder on the file system. When all the schemas are ready, the data itself will be copied from the Publisher to the snapshot folder. The snapshot is generated as a set of bulk copy program (BCP) files. Next, the Distribution Agent moves the snapshot to the Subscriber, if necessary it applies schema changes first and copies the data itself afterwards. The application of schema changes to the Subscriber is a nice feature, when you change the schema of the Publisher with, for example, an ALTER TABLE statement, that change is propagated by default to the Subscriber(s). Merge Replication Merge replication is typically used in server-to-client environments, for example when subscribers need to receive data, make changes offline, and later synchronize changes with the Publisher and other Subscribers, like with mobile devices that need to synchronize one in a while. Because I don’t really see BI capabilities here, I will not explain this type of replication any further. Replication Services in a BI environment Transactional Replication can be very useful in BI environments. In my opinion you never want to see users to run custom (SSRS) reports or PowerPivot solutions directly on your production database, it can slow down the system and can cause deadlocks in the database which can cause errors. Transactional Replication can offer a read-only, near real-time database for reporting purposes with minimal overhead on the source system. Snapshot Replication can also be useful in BI environments, if you don’t need a near real-time copy of the database, you can choose to use this form of replication. Next to an alternative for Transactional Replication it can be used to stage data so it can be transformed and moved into the data warehousing environment afterwards. In many solutions I have seen developers create multiple SSIS packages that simply copies data from one or more source systems to a staging database that figures as source for the ETL process. The creation of these packages takes a lot of (boring) time, while Replication Services can do the same in minutes. It is possible to filter out columns and/or records and it can even apply schema changes automatically so I think it offers enough features here. I don’t know how the performance will be and if it really works as good for this purpose as I expect, but I want to try this out soon!

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  • Silverlight Cream for January 26, 2011 -- #1036

    - by Dave Campbell
    In this all-submittal Issue: XamlNinja, Kevin Dockx, Steve Wortham, Andrea Boschin, Mick Norman, Colin Eberhardt, and Rudi Grobler(-2-, -3-, -4-, -5-). Above the Fold: Silverlight: "Getting an invalid cross-thread exception in Silverlight?" Kevin Dockx WP7: "WP7 Contrib – the last messenger" XamlNinja ISO: "How many files are too many files for isolated storage?" Mick Norman Shoutouts: Telerik announced a free WP7 Webinars series that you probably don't want to miss: Join Us for the Special Free Windows Phone 7 Webinars Series. Guest lecturers - Shawn Wildermuth and Mark Arteaga From SilverlightCream.com: WP7 Contrib – the last messenger XamlNinja has a great post up extending Laurent's IMessenger to deal with a tricky issue of trying to fire a message from one VM to another even if the 2nd VM isn't alive yet... oh, and this is in WP7Contrib, so go grab it! Getting an invalid cross-thread exception in Silverlight? Kevin Dockx has a solution to a problem we've all had... the 'invalid cross-thread exception' ... and the solution is even for those of us trying to do this in a VM... cool and easy solution, Kevin! Mastering Storyboards One Mistake at a Time Steve Wortham is back with a tutorial with a great title :) ... check out the progression from one success to another in this picture/title viewer ... don't miss the very end where he has the control rolled up into a CaptionedImageHyperlink, and a link to download it! Windows Phone 7 - Part #2: Your First Application Andrea Boschin has part 2 of his SilverlightShow WP7 series up. Lots of good intro material here on the manifest file and app.xaml ... he even gets into the ApplicationBar, phone orientation, and the Metro theme. How many files are too many files for isolated storage? Mick Norman alerted me to his blog early this morning, and this is his latest post... interesting tests of how many files are too many for ISO on your WP7... and I have to admit... he's stuffing a boatload of them out there in these tests! ... great info Mick! and thanks for the links. A Navigator Control For Visiblox Time Series Charts Colin Eberhardt's latest post is about creating an interactive navigator for large time series datasets in Visiblox charts.... check the images at the top of the post, and it'll be obvious :) ... very cool stuff. MVVM Frameworks with WP7 support Rudi Grobler has been very busy and if you check the dates, these posts are all in a day or two! This first highlights two contenders for MVVM on WP7: Caliburn and MVVMLight... both well-supported... quick intro to each followed by good links out to the author's sites Reading barcodes from your WP7 device Rudi Grobler also has a cool post up on reading barcodes with your WP7... he's using the ZXing Barcode Scanning Library, and makes quick work of the job. Taking Sterling for a Test-Drive Rudi Grobler has a quick intro to Sterlink, Jeremy Likness' ISO database for Silverlight up... quickly taking care of writing and reading back data. SQLite on WP7 After his discussion of Sterling, Rudi Grobler is now demonstrating the use of SQLite that has been ported to WP7. Check out his demo code... looks pretty easy to use. Hacking the WP7 Camera (The basics) Rudi Grobler's latest post is on getting direct access to the camera on WP7... be sure to do all the downloads and check out the external links he has. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • Silverlight Cream for February 22, 2011 -- #1050

    - by Dave Campbell
    In this Issue: Robby Ingebretsen, Victor Gaudioso, Andrea Boschin(-2-), Rudi Grobler(-2-), Michael Crump, Deborah Kurata, Dennis Delimarsky, Pete Vickers, Yochay Kiriaty, Peter Kuhn, WindowsPhoneGeek, and Jesse Liberty(-2-). Above the Fold: Silverlight: "Silverlight Simple MVVM Printing" Deborah Kurata WP7: "Creating theme friendly UI in WP7 using OpacityMask" WindowsPhoneGeek Tools: "KAXAML v1.8" Robby Ingebretsen Shoutouts: Peter Foot posted Silverlight for Windows Phone Toolkit–Feb 2011 Rudi Grobler posts his top requested features for WP7, Silverlight, and WCF: vNext ... see you in Seattle, Rudi! From SilverlightCream.com: KAXAML v1.8 Robby Ingebretsen just posted KAXML v1.8 that now supports .NET 4.0, WPF, and Silferlight4 ... go grab it. Learn how to use Blend to create a Data Store, Add Properties to it, etc... Victor Gaudioso has 3 new Silverlight and/or Expression Blend video tutorials up... first is this one on Creating a Data store, adding properties to it, oh... read the title :), Next up is: Send async messages across UserControls or even applications, followed by the latest: Create a Sketchflow Animation using the Sketchflow Animation Panel A base class for threaded Application Services Andrea Boschin continues his IApplicationServices series with this one on a base class he created to develop Application Services that runs a thread. Windows Phone 7 - Part #6: Taking advantage of the phone Andrea Boschin also has part 6 of his series at SilverlightShow on WP7... this one is covering a bunch of items... Capabilities, Launchers/Choosers, and gestures... plus the source for a fun game. {homebrew} Skype for WP7 Rudi Grobler posted about the availability of (some features of) Skype for WP7 being available. The XDA guys have working contacts and the ability to chat going, plus they're looking for poeple to join in... Follow Rudi's link, and let them know you're up for it! Simple menu for your WP7 application Rudi Grobler has another post up about a very simple menu control for WP7 that he produced that is also very easy to use. Attaching a Command to the WP7 Application Bar Michael Crump shows how to bind the application bar to a Relay Command with the use of MVVMLight in 7 Easy Steps :) Silverlight Simple MVVM Printing Deborah Kurata continues her MVVM series with this one on printing what your user sees on the page... but doing so within the MVVM pattern. Enhancing the general Zune experience on Windows Phone 7 with Zune web API Dennis Delimarsky apparently likes the Zune as much as I do, and has ratted out tons of information about the Zune API for use in WP7 apps... and lots of code... Validating input forms in Windows Phone 7 Pete Vickers takes a great detailed spin through validation on the WP7... the rules have changed, but Pete explains with some code examples. Windows Phone Shake Gestures Library Yochay Kiriaty discusses Shake Gestures for the WP7 device and then describes the "Windows Phone Shake Gesture Library" that detects shake gestures in 3D space... and after a great description has the link for downloading. What difference does a sprite sheet make? Peter Kuhn is writing a series at SilverlightShow on XNA for Silverlight Devs that I've highlighted. An outshoot of that is this discussion of the use of sprite sheets and game development. Creating theme friendly UI in WP7 using OpacityMask WindowsPhoneGeek has a new post up today on using Opacity Masks in WP7 to enable using one set of icons for either the dark or light theme.. too cool, you'll wanna check this out! Linq to XML Jesse Liberty continues with Linq with regard to WP7 with this post on Linq to XML... and why XML? crap... I was just saving/loading XML today! :) Lambda–Not as weird as it sounds Jesse Liberty then jumps into Lambda expressions... maybe it's a chance for me to learn WTF the lambdas really do that I use all the time! Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • A temporary disagreement

    - by Tony Davis
    Last month, Phil Factor caused a furore amongst some MVPs with an article that attempted to offer simple advice to developers regarding the use of table variables, versus local and global temporary tables, in their code. Phil makes clear that the table variables do come with some fairly major limitations.no distribution statistics, no parallel query plans for queries that modify table variables.but goes on to suggest that for reasonably small-scale strategic uses, and with a bit of due care and testing, table variables are a "good thing". Not everyone shares his opinion; in fact, I imagine he was rather aghast to learn that there were those felt his article was akin to pulling the pin out of a grenade and tossing it into the database; table variables should be avoided in almost all cases, according to their advice, in favour of temp tables. In other words, a fairly major feature of SQL Server should be more-or-less 'off limits' to developers. The problem with temp tables is that, because they are scoped either in the procedure or the connection, it is easy to allow them to hang around for too long, eating up precious memory and bulking up the shared tempdb database. Unless they are explicitly dropped, global temporary tables, and local temporary tables created within a connection rather than within a stored procedure, will persist until the connection is closed or, with connection pooling, until the connection is reused. It's also quite common with ASP.NET applications to have connection leaks, as Bill Vaughn explains in his chapter in the "SQL Server Deep Dives" book, meaning that the web page exits without closing the connection object, maybe due to an error condition. This will then hang around in the heap for what might be hours before picked up by the garbage collector. Table variables are much safer in this regard, since they are batch-scoped and so are cleaned up automatically once the batch is complete, which also means that they are intuitive to use for the developer because they conform to scoping rules that are closer to those in procedural code. On the surface then, an ideal way to deal with issues related to tempdb memory hogging. So why did Phil qualify his recommendation to use Table Variables? This is another of those cases where, like scalar UDFs and table-valued multi-statement UDFs, developers can sometimes get into trouble with a relatively benign-looking feature, due to way it's been implemented in SQL Server. Once again the biggest problem is how they are handled internally, by the SQL Server query optimizer, which can make very poor choices for JOIN orders and so on, in the absence of statistics, especially when joining to tables with highly-skewed data. The resulting execution plans can be horrible, as will be the resulting performance. If the JOIN is to a large table, that will hurt. Ideally, Microsoft would simply fix this issue so that developers can't get burned in this way; they've been around since SQL Server 2000, so Microsoft has had a bit of time to get it right. As I commented in regard to UDFs, when developers discover issues like with such standard features, the database becomes an alien planet to them, where death lurks around each corner, and they continue to avoid these "killer" features years after the problems have been eventually resolved. In the meantime, what is the right approach? Is it to say "hammers can kill, don't ever use hammers", or is it to try to explain, as Phil's article and follow-up blog post have tried to do, what the feature was intended for, why care must be applied in its use, and so enable developers to make properly-informed decisions, without requiring them to delve deep into the inner workings of SQL Server? Cheers, Tony.

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  • Willy Rotstein on Supply Chain Planning

    - by sarah.taylor(at)oracle.com
    Each time a merchandiser, buyer or planner in Retail makes a business decision around assortment, inventory, pricing and promotions there is an opportunity to improve both Profitability and Customer Service. Improving decision making, however, has always been a tricky business for retailers.  I have worked in this space for more than 15 years. I began my career as an academic, at Imperial College London, and then broadened this interest with Retailers, aiming to optimize their merchandising and supply chain decisions. Planning the business and optimizing profit is a complex process. The complexity arises from the variety of people involved, the large number of decisions to take across all business processes, the uncertainty intrinsic to the retail environment as well as the volume of data available for analysis.  Things are not getting any easier either. The advent of multi-channel, social media and mobile is taking these complexities to a new level and presenting additional opportunities for those willing to exploit them. I guess it is due to the complexities of the decision making process that, over the last couple of years working with Oracle Retail, I have witnessed a clear trend around the deployment of planning systems. Retailers are aiming to simplify their decision making processes. They want to use one joined up planning platform across the business and enhance it with "actionable" data mining and optimization techniques. At Oracle Retail, we have a vibrant community of international retailers who regularly come together to discuss the big issues in retail planning. It is a combination of fashion, grocery and speciality retailers, all sharing their best practice vision for planning and optimizing merchandise decisions. As part of the Retail Exchange program, at the recent National Retail Federation event in New York, I jointly hosted a Planning dinner with Peter Fitzgerald from Google UK, Retail Division. Those retailers from our international planning community who were in New York for the annual NRF event were able to attend. The group comprised some of Europe's great International Retail brands.  All sectors were represented by organisations like Mango, LVMH, Ahold, Morrisons, Shop Direct and River Island. They confirmed the current importance of engaging with Planning and Optimization issues. In particular the impact of the internet was a key topic. We had a great debate about new retail initiatives.  Peter highlighted how mobility is changing retail - in particular with the new "local availability search" initiative. We also had an exciting discussion around the opportunities to improve merchandising using the new data that is becoming available from search, social media and ecommerce sites. It will be our focus to continue to help retailers translate this data into better results while keeping their business operations simple. New developments in "actionable" analytics and computing capacity make this a very exciting area today. Watch this space for my contributions on these topics which will be made available through this blog. Oracle Retail has a strong Planning community. if you are a category manager, a planner, a buyer, a merchandiser, a retail supplier or any retail executive with a keen interest in planning then you would be very welcome to join Oracle Retail's Planning Community. As part of our community you will be able to join our in-person and virtual events, download topical white papers and best practice information specifically tailored to your area of interest.  If anyone would like to register their interest in joining our community of retailers discussing planning then please contact me at [email protected]   Willy Rotstein, Oracle Retail

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  • IBM DB2 and the “'DbProviderFactories' section can only appear once per config” error

    - by Davide Mauri
    IBM doesn’t like MS. That’s a fact. And that’s why you can get your machine.config file (!!!) corrupted if you try to install IBM DB2 data providers on your server machine. If at some point, after having installed IBM DB2 data providers your SSIS packages or SSAS cubes or SSRS Reports starts to complain that 'DbProviderFactories' section can only appear once per config you may want to check into you machine.config, located in the %runtime install path%\Config http://msdn.microsoft.com/en-us/library/ms229697%28v=vs.71%29.aspx Almost surely you’ll find a IBM DB2 Provider into an additional DbProviderFactories section all alone. Poor guy. Remove the double DBProviderFactories entry, and merge everything inside only one section DBProviderFactories and after that everything will start to work again.

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  • The Java Community Process: What's Broken and How to Fix It

    - by Tori Wieldt
    In a panel discussion today at TheServerSide Java Symposium, Patrick Curran, Head of the Java Community Process, James Gosling, and ?Reza Rahman, member, Java EE 6 and EJB 3.1 expert groups, discussed the state of the JCP. Moderated by Cameron McKenzie, Editor of TheServerSide.com, they discussed what's wrong with JCP and ways to fix it.What's wrong with the JCP? Reza Rahman was quite supportive of the JCP. "I work as a consultant, and it's much better than getting a decision made a large company," Reza commented. He gave the JCP "Five stars" and explained that as an individual, he was able to have an impact on things that mattered to him. Cameron asked, "Now all these JCP problems came after Oracle acquired Sun, right?" To which the crowd had a good laugh, and the panel all agreed many of the JCP problems existed under Sun. How is the JCP handled differently under Oracle than Sun? "Pretty similar," said James. Oracle "tends more towards practicality" said Reza. "I'm glad to see things moving again, we've got several new JSRs filed," Patrick commented.How to Fix It?They all agreed greater transparency is a top issue. Without it, people assume sinister behavior whether it's there or not. Patrick said that currently spec leads are "encouraged" to be transparent, and the JCP office is planning to submit JSRs to change the JCP process so transparency is mandated, both for mailing lists and issue tracking. Shining a light on problems is the best way to fix them.Reza said the biggest problem is lack of a participation from the community. If more people are involved, a lot of the problems go away. "Developers are too non-chalant, they should realize what happens in the JCP has an direct impact on their career and they need to get involved." Reza commented.Got Involved!During Q&A, someone asked how a developer could get involved. They answered: Pick a JSR you are interested in and follow it. To start, you could read an article about the JSR and comment on the article (expert group members do read the comments). Or read the spec, discuss it with others and post a blog about it. Read the Expert Group proceedings. Join the JCP (free for individuals). Open source projects have code that you can download and play with, download it and provide feedback. Patrick mentioned that the JCP really wants more participation. "One way we are working on it is that we are encouraging JUGs to join the JCP as a group, and that makes all members of the JUG JCP members," Patrick said.They commented that most spec leads are desperate for feedback. "And, please get involved BEFORE the spec is finalized!" James declared. Someone from the audience said it's hard to put valuable time into something before it's baked. Patrick explained that Post Final Draft (PFD) is the time in the JCP process when the spec is mature enough to review but before the spec is finalized. The panel agreed the worst thing that could happen is that most people in the Java community just complain about the JCP without getting involved. Developer Sumit Goyal, conference attendee, thought it was a healthy discussion. "I got insights into how JSRs are worked on and finalized," he said.Key LinksThe Java Community Process Website  http://jcp.org/en/home/indexArticle: A Conversation with JCP Chair Patrick Curran Oracle Technology Network http://www.oracle.com/technetwork/java/index.htmlTheServerSide Java Symposium  http://javasymposium.techtarget.com/

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  • Tracking pages with variables in GA

    - by Imran
    Recently I have updated my site, it now passes a variable on some links like so... www.mysite.com/1234/?play=true I've noticed in Google Analytics it records www.mysite.com/1234/ and www.mysite.com/1234/?play=true as two different URL's. Is there a way to merge them because they are after all just one page, It makes "Top Content" for example hard to read because of dupilicates. I've read about something called canonical link tag which may help this? My blog has this already inserted into the head but it doesnt make a difference. Any suggestions?

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  • Google I/O 2011: Large-scale Data Analysis Using the App Engine Pipeline API

    Google I/O 2011: Large-scale Data Analysis Using the App Engine Pipeline API Brett Slatkin The Pipeline API makes it easy to analyze complex data using App Engine. This talk will cover how to build multi-phase Map Reduce workflows; how to merge multiple large data sources with "join" operations; and how to build reusable analysis components. It will also cover the API's concurrency model, how to debug in production, and built-in testing facilities. From: GoogleDevelopers Views: 3320 17 ratings Time: 51:39 More in Science & Technology

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  • Week in Geek: 50 Million Viruses and More on the Way Edition

    - by Asian Angel
    This week we learned how to backup and copy data between iOS devices, use Linux commands in Windows with Cygwin, boost email writing productivity with Microsoft Word Mail Merge, be more productive in Ubuntu using keyboard shortcuts, “restore the FTP service in XBMC, rename downloaded TV shows, access the Android Market in emulation”, and more Latest Features How-To Geek ETC How To Create Your Own Custom ASCII Art from Any Image How To Process Camera Raw Without Paying for Adobe Photoshop How Do You Block Annoying Text Message (SMS) Spam? How to Use and Master the Notoriously Difficult Pen Tool in Photoshop HTG Explains: What Are the Differences Between All Those Audio Formats? How To Use Layer Masks and Vector Masks to Remove Complex Backgrounds in Photoshop Enjoy Clutter-Free YouTube Video Viewing in Opera with CleanTube Bring Summer Back to Your Desktop with the LandscapeTheme for Chrome and Iron The Prospector – Home Dash Extension Creates a Whole New Browsing Experience in Firefox KinEmote Links Kinect to Windows Why Nobody Reads Web Site Privacy Policies [Infographic] Asian Temple in the Snow Wallpaper

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  • SEO consequences for merging country sites in a .com

    - by Pekka
    I am in the process of refactoring a number of rental portals I've built for a company with locations in Austria, Germany, Switzerland, and the Netherlands. Instead of the current setting of each country site running under its own domain name: www.companyname.de www.companyname.ch www.companyname.at I would love to merge them all in this way: www.companyname.com/de www.companyname.com/ch www.companyname.com/at with the country TLDs doing a 301 redirect to the respective .com address. However, I have been repeatedly told not to do this due to likely problems with SEO - the business is very SEO dependent, and being a rental chain, needs to be strong in local results. So the question is: Is there an unavoidable hit in Search Engine Optimization when redirecting to a central .com domain? What measures can be taken to soften the blow? What comes to my mind is explicitly specifying a lang attribute in the html tag. Are there any other ways to specifically point out geographical location for sub-directories?

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  • Copy TFS Build Definitions between Projects and Collections

    - by Jakob Ehn
    Originally posted on: http://geekswithblogs.net/jakob/archive/2014/06/05/copy-tfs-build-definitions-between-projects-and-collections.aspxThe last couple of years it has become apparent that using multiple team projects in TFS is generally a bad idea. There are of course exceptions to this, but there are a lot ot things that becomes much easier to do when you put all of your projects and team in the same team project. Fellow ALM MVP Martin Hinshelwood has blogged about this several times, as well as other people in the community. In particular, using the backlog and portfolio management tools makes much more sense when everything is located in the same team project. Consolidating multiple team projects into one is not that easy unfortunately, it involves migrating source code, work items, reports etc.  Another thing that also need to be migrated is build definitions. It is possible to clone build definitions within the same team project using the TFS power tools. The Community TFS Build Manager also lets you clone build definitions to other team projects. But there is no tool that allows you to clone/copy a build definition to another collection. So, I whipped up a simple console application that let you do this. The tool can be downloaded from https://onedrive.live.com/redir?resid=EE034C9F620CD58D!8162&authkey=!ACTr56v1QVowzuE&ithint=file%2c.zip   Using CopyTFSBuildDefinitions You use the tool like this: CopyTFSBuildDefinitions  SourceCollectionUrl  SourceTeamProject  BuildDefinitionName  DestinationCollectionUrl  DestinationTeamProject [NewDefinitionName] Arguments SourceCollectionUrl The URL to the TFS collection that contains the team project with the build definition that you want to copy SourceTeamProject The name of the team project that contains the build definition BuildDefinitionName Name of the build definition DestinationCollectionUrl The URL to the TFS collection that contains the team project that you want to copy your build definition to DestinationTeamProject The name of the team project in the destination collection NewDefinitionName (Optional) Use this to override the name of the new build definition. If you don’t specify this, the name will the same as the original one Example: CopyTFSBuildDefinitions  https://jakob.visualstudio.com DemoProject  WebApplication.CI https://anotheraccount.visualstudio.com     Notes Since we are (potentially) create a build definition in a new collection, there is no guarantee that the various paths that are defined in the build definition exist in the new collection. For example, a build definition refers to server paths in TFVC or repos + branches in TFGit. It also refers to build controllers that definitely don’t exist in the new collection. So there will be some cleanup to do after you copy your build definitions. You can fix some of these using the Community TFS Build Manager, for example it is very easy to apply the correct build controller to a set of build definitions The problem stated above also applies to build process templates. However, the tool tries to find a build process template in the new team project with the same file name as the one that existed in the old team project. If it finds one, it will be used for the new build definition. Otherwise is will use the default build template If you want to run the tool for many build definitions, you can use this SQL scripts, compliments of Mr. Scrum/ALM MVP Richard Hundhausen to generate the necessary commands: USE Tfs_Collection GO SELECT 'CopyTFSBuildDefinitions.exe http://SERVER:8080/tfs/collection "' + P.ProjectName + '" "' + REPLACE(BD.DefinitionName,'\','') + '" http://NEWSERVER:8080/tfs/COLLECTION TEAMPROJECT'   FROM tbl_Project P        INNER JOIN tbl_BuildGroup BG on BG.TeamProject = P.ProjectUri        INNER JOIN tbl_BuildDefinition BD on BD.GroupId = BG.GroupId   ORDER BY P.ProjectName, BD.DefinitionName   Hope that helps, let me know if you have any problems with the tool or if you find it useful

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  • How do I deal with a third party application that has embedded hints that result in a sub-optimal execution plan in my environment?

    - by Maria Colgan
    I have gotten many variations on this question recently as folks begin to upgrade to Oracle Database 11g and there have been several posts on this blog and on others describing how to use SQL Plan Management (SPM) so that a non-hinted SQL statement can use a plan generated with hints. But what if the hint is supplied in the third party application and is causing performance regressions on your system? You can actually use a very similar technique to the ones shown before but this time capture the un-hinted plan and have the hinted SQL statement use that plan instead. Below is an example that demonstrates the necessary steps. 1. We will begin by running the hinted statement 2. After examining the execution plan we can see it is suboptimal because of a bad join order. 3. In order to use SPM to correct the problem we must create a SQL plan baseline for the statement. In order to create a baseline we will need the SQL_ID for the hinted statement. Easy place to get it is in V$SQL. 4. A SQL plan baseline can be created using a SQL_ID and DBMS_SPM.LOAD_PLANS_FROM_CURSOR_CACHE. This will capture the existing plan for this SQL_ID from the shared pool and store in the SQL plan baseline. 5. We can check the SQL plan baseline got created successfully by querying DBA_SQL_PLAN_BASELINES. 6. When you manually create a SQL plan baseline the first plan added is automatically accepted and enabled. We know that the hinted plan is poorly performing plan so we will disable it using DBMS_SPM.ALTER_SQL_PLAN_BASELINE. Disabling the plan tells the optimizer that this plan not a good plan, however since there is no alternative plan at this point the optimizer will still continue to use this plan until we provide a better one. 7. Now let's run the statement without the hint. 8. Looking at the execution plan we can see that the join order is different. The plan without the hint also has a lower cost (3X lower), which indicates it should perform better. 9. In order to map the un-hinted plan to the hinted SQL statement we need to add the plan to the SQL plan baseline for the hinted statement. We can do this using DBMS_SPM.LOAD_PLANS_FROM_CURSOR_CACHE but we will need the SQL_ID and  PLAN_HASH_VALUE for the non-hinted statement, which we can find in V$SQL. 10. Now we can add the non-hinted plan to the SQL plan baseline of the hinted SQL statement using DBMS_SPM.LOAD_PLANS_FROM_CURSOR_CACHE. This time we need to pass a few more arguments. We will use the SQL_ID and PLAN_HASH_VALUE of the non-hinted statement but the SQL_HANDLE of the hinted statement. 11. The SQL plan baseline for our statement now has two plans. But only the newly added plan (SQL_PLAN_gbpcg3f67pc788a6d8911) is enabled and accepted. This tells the Optimizer that this is the plan it should use for this statement. We can confirm that the correct plan (non-hinted) will be selected for the statement from now on by re-executing the hinted statement and checking its execution plan.

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  • A quick look at: sys.dm_os_buffer_descriptors

    - by Jonathan Allen
    SQL Server places data into cache as it reads it from disk so as to speed up future queries. This dmv lets you see how much data is cached at any given time and knowing how this changes over time can help you ensure your servers run smoothly and are adequately resourced to run your systems. This dmv gives the number of cached pages in the buffer pool along with the database id that they relate to: USE [tempdb] GO SELECT COUNT(*) AS cached_pages_count , CASE database_id WHEN 32767 THEN 'ResourceDb' ELSE DB_NAME(database_id) END AS Database_name FROM sys.dm_os_buffer_descriptors GROUP BY DB_NAME(database_id) , database_id ORDER BY cached_pages_count DESC; This gives you results which are quite useful, but if you add a new column with the code: …to convert the pages value to show a MB value then they become more relevant and meaningful. To see how your server reacts to queries, start up SSMS and connect to a test server and database – mine is called AdventureWorks2008. Make sure you start from a know position by running: -- Only run this on a test server otherwise your production server's-- performance may drop off a cliff and your phone will start ringing. DBCC DROPCLEANBUFFERS GO Now we can run a query that would normally turn a DBA’s hair white: USE [AdventureWorks2008] go SELECT * FROM [Sales].[SalesOrderDetail] AS sod INNER JOIN [Sales].[SalesOrderHeader] AS soh ON [sod].[SalesOrderID] = [soh].[SalesOrderID] …and then check our cache situation: A nice low figure – not! Almost 2000 pages of data in cache equating to approximately 15MB. Luckily these tables are quite narrow; if this had been on a table with more columns then this could be even more dramatic. So, let’s make our query more efficient. After resetting the cache with the DROPCLEANBUFFERS and FREEPROCCACHE code above, we’ll only select the columns we want and implement a WHERE predicate to limit the rows to a specific customer. SELECT [sod].[OrderQty] , [sod].[ProductID] , [soh].[OrderDate] , [soh].[CustomerID] FROM [Sales].[SalesOrderDetail] AS sod INNER JOIN [Sales].[SalesOrderHeader] AS soh ON [sod].[SalesOrderID] = [soh].[SalesOrderID] WHERE [soh].[CustomerID] = 29722 …and check our effect cache: Now that is more sympathetic to our server and the other systems sharing its resources. I can hear you asking: “What has this got to do with logging, Jonathan?” Well, a smart DBA will keep an eye on this metric on their servers so they know how their hardware is coping and be ready to investigate anomalies so that no ‘disruptive’ code starts to unsettle things. Capturing this information over a period of time can lead you to build a picture of how a database relies on the cache and how it interacts with other databases. This might allow you to decide on appropriate schedules for over night jobs or otherwise balance the work of your server. You could schedule this job to run with a SQL Agent job and store the data in your DBA’s database by creating a table with: IF OBJECT_ID('CachedPages') IS NOT NULL DROP TABLE CachedPages CREATE TABLE CachedPages ( cached_pages_count INT , MB INT , Database_Name VARCHAR(256) , CollectedOn DATETIME DEFAULT GETDATE() ) …and then filling it with: INSERT INTO [dbo].[CachedPages] ( [cached_pages_count] , [MB] , [Database_Name] ) SELECT COUNT(*) AS cached_pages_count , ( COUNT(*) * 8.0 ) / 1024 AS MB , CASE database_id WHEN 32767 THEN 'ResourceDb' ELSE DB_NAME(database_id) END AS Database_name FROM sys.dm_os_buffer_descriptors GROUP BY database_id After this has been left logging your system metrics for a while you can easily see how your databases use the cache over time and may see some spikes that warrant your attention. This sort of logging can be applied to all sorts of server statistics so that you can gather information that will give you baseline data on how your servers are performing. This means that when you get a problem you can see what statistics are out of their normal range and target you efforts to resolve the issue more rapidly.

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  • Sorting and Paging a Grid of Data in ASP.NET MVC

    This article is the fifth installment in an ongoing series on displaying a grid of data in an ASP.NET MVC application. Previous articles in this series examined how to sort, page, and filter a grid of data, but none have looked at combining one or more of these features in a single grid. This article and the next one show how to merge these features into a single grid. In particular, this article looks at displaying a grid that can handle both sorting and paging. The subsequent article will examine combining sorting, paging and filtering. Like with its predecessors, this article offers step-by-step instructions and includes a complete, working demo available for download at the end of the article. Read on to learn more! Read More >

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  • Bridging the Gap in Cloud, Big Data, and Real-time

    - by Dain C. Hansen
    Normal 0 false false false EN-US X-NONE X-NONE /* 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:"Calibri","sans-serif"; mso-bidi-font-family:"Times New Roman";} With all the buzz of around big data and cloud computing, it is easy to overlook one of your most precious commodities—your data. Today’s businesses cannot stand still when it comes to data. Market success now depends on speed, volume, complexity, and keeping pace with the latest data integration breakthroughs. Are you up to speed with big data, cloud integration, real-time analytics? Join us in this three part blog series where we’ll look at each component in more detail. Meet us online on October 24th where we’ll take your questions about what issues you are facing in this brave new world of integration. Let’s start first with Cloud. What happens with your data when you decide to implement a private cloud architecture? Or public cloud? Data integration solutions play a vital role migrating data simply, efficiently, and reliably to the cloud; they are a necessary ingredient of any platform as a service strategy because they support cloud deployments with data-layer application integration between on-premise and cloud environments of all kinds. For private cloud architectures, consolidation of your databases and data stores is an important step to take to be able to receive the full benefits of cloud computing. Private cloud integration requires bidirectional replication between heterogeneous systems to allow you to perform data consolidation without interrupting your business operations. In addition, integrating data requires bulk load and transformation into and out of your private cloud is a crucial step for those companies moving to private cloud. In addition, the need for managing data services as part of SOA/BPM solutions that enable agile application delivery and help build shared data services for organizations. But what about public Cloud? If you have moved your data to a public cloud application, you may also need to connect your on-premise enterprise systems and the cloud environment by moving data in bulk or as real-time transactions across geographies. For public and private cloud architectures both, Oracle offers a complete and extensible set of integration options that span not only data integration but also service and process integration, security, and management. For those companies investing in Oracle Cloud, you can move your data through Oracle SOA Suite using REST APIs to Oracle Messaging Cloud Service —a new service that lets applications deployed in Oracle Cloud securely and reliably communicate over Java Messaging Service . As an example of loading and transforming data into other public clouds, Oracle Data Integrator supports a knowledge module for Salesforce.com—now available on AppExchange. Other third-party knowledge modules are being developed by customers and partners every day. To learn more about how to leverage Oracle’s Data Integration products for Cloud, join us live: Data Integration Breakthroughs Webcast on October 24th 10 AM PST.

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  • Silverlight Cream for February 02, 2011 -- #1039

    - by Dave Campbell
    In this Issue: Tony Champion, Gill Cleeren, Alex van Beek, Michael James, Ollie Riches, Peter Kuhn, Mike Ormond, WindowsPhoneGeek(-2-), Daniel N. Egan, Loek Van Den Ouweland, and Paul Thurott. Above the Fold: Silverlight: "Using the AutoCompleteBox" Peter Kuhn WP7: "Windows Phone Image Button" Loek Van Den Ouweland Training: "New WP7 Virtual Labs" Daniel N. Egan Shoutouts: SilverlightShow has their top 5 most popular news articles up: SilverlightShow for Jan 24-30, 2011 Rudi Grobler posted answers he gives to questions about Silverlight - Where do I start? Brian Noyes starts a series of Webinars at SilverlightShow this morning at 10am PDT: Free Silverlight Show Webinar: Querying and Updating Data From Silverlight Clients with WCF RIA Services Join your fellow geeks at Gangplank in Chandler Arizona this Saturday as Scott Cate and AZGroups brings you Azure Boot Camp – Feb 5th 2011 From SilverlightCream.com: Deploying Silverlight with WCF Services Tony Champion takes a step out of his norm (Pivot) and has a post up about deploying WCF Services with your SL app, and how to take the pain out of that without pulling out your hair. Getting ready for Microsoft Silverlight Exam 70-506 (Part 3) Gill Cleeren's part 3 of getting ready for the Silverlight Exam is up at SilverlightShow... with links to the first two parts. There's so much good information linked off these... thanks Gill and 'The Show'! A guide through WCF RIA Services attributes Alex van Beek has a post up you will probably want to bookmark unless you're not using WCF RIA... do you know all the attributes by heart? ... how about an excellent explanation of 10 of them? Using DeferredLoadListBox in a Pivot Control Michael James discusses using the DeferredLoadListBox, and then also using it with the Pivot control... but not without some pain points which he defines and gives the workaround for. WP7: Know your data Ollie Riches' latest is about Data and WP7 ... specifically 'knowing' what data you're needing/using to avoid the 90MB memory limit... He gives a set of steps to follow to measure your data model to avoid getting in trouble. Using the AutoCompleteBox Peter Kuhn takes a great look at the AutoCompleteBox... the basics, and then well beyond with custom data, item templates, custom filters, asynchronous filtering, and a behavior for MVVM async filtering. OData and Windows Phone 7 Part 2 Mike Ormond has part 2 of his OData/WP7 post up... lashing up the images to go along with the code this time out... nice looking app. WP7 RoundToggleButton and RoundButton in depth WindowsPhoneGeek is checking out the RoundToggleButton and RoundButton controls from the Coding4fun Toolkit in detail... of course where to get them, and then the setup, demo project included. All about Dependency Properties in Silverlight for WP7 WindowsPhoneGeek's latest post is a good dependency-property discussion related to WP7 development, but if you're just learning, it's a good place to learn about the subject. New WP7 Virtual Labs Daniel N. Egan posted links to 6 new WP7 Virtual Labs released on 1/25. Windows Phone Image Button Loek Van Den Ouweland has a style up on his blog that gives you an imageButton for your WP7 apps, and a sweet little video showing how it's done in Expression Blend too. Yet another free Windows Phone book for developers Paul Thurott found a link to another Free eBook for WP7 development. This one is by Puja Pramudya and is an English translation of the original, and is an introductory text, but hey... it's free... give it a look! Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • How to remove individual webapps from Launcher

    - by Luis Alvarado
    Today my launcher looks like a long vertical bar of icons. I have 14 webapp icons on the launcher but there is no option to remove them or an option to no include them (Or even an option to merge them as I asked in a previous question). Is there an option, without having to disable the whole webapp idea, to remove individual webapps from the launcher. Forgot to add that the option to Unlock from Launcher does not appear, but only on the webapps. On the rest of the launcher icons it appears correctly. This is an image of the actual problem (Thanks to koma):

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  • Silverlight Cream for December 12, 2010 - 2 -- #1009

    - by Dave Campbell
    In this Issue: Michael Crump, Jesse Liberty, Shawn Wildermuth, Domagoj Pavlešic, Peter Kuhn, James Ashley, Sara Summers, Morten Nielsen, Peter Torr, and Tau Sick. Above the Fold: Silverlight: "Silverlight 4 – Coded UI Framework Video Tutorial" Michael Crump WP7: "Windows Phone From Scratch #12–Custom Behaviors (Part I)" Jesse Liberty From SilverlightCream.com: Silverlight 4 – Coded UI Framework Video Tutorial Michael Crump posted a video tutorial today on the Coded UI Test Framework that we got with the VS2010 Feature Pack 2. Wanna create automated tests? ... check out Michael's video and save yourself some time. Windows Phone From Scratch #12–Custom Behaviors (Part I) Jesse Liberty posted his Windows Phone from Scratch number 12 today... and it's on Custom Behaviors... cool stuff... need to read this and get your head around it... this is part 1, jump on it before he drops part 2 on us! The Next Application Platform? All of them... Shawn Wildermuth has a thought-provoking post up ... check it out and see if you're ready to join him on the adventure of building for all the platforms... Windows Phone 7 Accelerometer Test App Domagoj Pavlešic has a test app up for the accelerometer on the WP7 ... if you need to use it, and are having problems, a good example always helps me. Protocol of developing an animation texture tool Peter Kuhn found a need for a tool to creat some animations for an WP7 XNA game... so he challenged himself to write it, and detailed out all his steps as he went. Re-examining WP7 Launchers and Choosers James Ashley's most recent post is on the Pivot Control ... check this out... add a working Horizontally oriented slider to a pivot... plus some external links to help out New Prototyping Sketch Sheets for WP7 This is one of those posts that I had to go to SilverlightCream and make sure I hadn't hit it yet... pretty cool prototype sheets for WP7 by Sara Summers ... we've seen others, they're all good. Simulating GPS on Windows Phone 7 Morten Nielsen helps you get around the fact that you're not going to be able to use the emulator for testing your GPS app ... at least not without some assistance... and that doesn't mean hauling your dev system around your neighborhood, either. How to correctly handle application deactivation and reactivation We've seen posts on Tombstoning, but probably not from Silverlight team members... check this one out from Peter Torr ... great even sequence information and all the info on how to correctly handle it, plus external links to the documentation... you knew there was documentation, right? :) Localizing a Windows Phone 7 Application Tau Sick has a post up discussing Localization and your WP7 apps... coming from soneone with an app in the marketplace in 3 languages, it's a pretty good bet he's got it figured out! Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • Something other than Vertex Welding with Texture Atlas?

    - by Tim Winter
    What options (in C# with XNA) would there be for texture usage in a procedural generated 3D world made of cubes to increase performance? Yes, it's like Minecraft. I've been doing a texture atlas and rendering faces individually (4 vertices per face), but I've also read in a couple places about using texture wrapping with two 1D atlases to merge adjacent faces with the same texture. If two or more adjacent faces share the same image, it'd be quite easy to wrap in this way reducing vertices by a large amount. My problem with this is having too many textures, swapping too often, and many image related things like non-power of 2 images. Is there a middle ground option between the 1D texture atlas trick and rendering 4 vertices per cube face? This is a picture of what I have currently (in wireframe). 4 vertices per face seems extremely inefficient to me.

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  • Finding the maximum value/date across columns

    - by AtulThakor
    While working on some code recently I discovered a neat little trick to find the maximum value across several columns….. So the starting point was finding the maximum date across several related tables and storing the maximum value against an aggregated record. Here's the sample setup code: USE TEMPDB IF OBJECT_ID('CUSTOMER') IS NOT NULL BEGIN DROP TABLE CUSTOMER END IF OBJECT_ID('ADDRESS') IS NOT NULL BEGIN DROP TABLE ADDRESS END IF OBJECT_ID('ORDERS') IS NOT NULL BEGIN DROP TABLE ORDERS END SELECT 1 AS CUSTOMERID, 'FREDDY KRUEGER' AS NAME, GETDATE() - 10 AS DATEUPDATED INTO CUSTOMER SELECT 100000 AS ADDRESSID, 1 AS CUSTOMERID, '1428 ELM STREET' AS ADDRESS, GETDATE() -5 AS DATEUPDATED INTO ADDRESS SELECT 123456 AS ORDERID, 1 AS CUSTOMERID, GETDATE() + 1 AS DATEUPDATED INTO ORDERS .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; }   Now the code used a function to determine the maximum date, this performed poorly. After considering pivoting the data I opted for a case statement, this seemed reasonable until I discovered other areas which needed to determine the maximum date between 5 or more tables which didn't scale well. The final solution involved using the value clause within a sub query as followed. SELECT C.CUSTOMERID, A.ADDRESSID, (SELECT MAX(DT) FROM (Values(C.DATEUPDATED),(A.DATEUPDATED),(O.DATEUPDATED)) AS VALUE(DT)) FROM CUSTOMER C INNER JOIN ADDRESS A ON C.CUSTOMERID = A.CUSTOMERID INNER JOIN ORDERS O ON O.CUSTOMERID = C.CUSTOMERID .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; } As you can see the solution scales well and can take advantage of many of the aggregate functions!

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