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• SQL SERVER – Weekly Series – Memory Lane – #038

  - by Pinal Dave

  Here is the list of selected articles of SQLAuthority.com across all these years. Instead of just listing all the articles I have selected a few of my most favorite articles and have listed them here with additional notes below it. Let me know which one of the following is your favorite article from memory lane. 2007 CASE Statement in ORDER BY Clause – ORDER BY using Variable This article is as per request from the Application Development Team Leader of my company. His team encountered code where the application was preparing string for ORDER BY clause of the SELECT statement. Application was passing this string as variable to Stored Procedure (SP) and SP was using EXEC to execute the SQL string. This is not good for performance as Stored Procedure has to recompile every time due to EXEC. sp_executesql can do the same task but still not the best performance. SSMS – View/Send Query Results to Text/Grid/Files Results to Text – CTRL + T Results to Grid – CTRL + D Results to File – CTRL + SHIFT + F 2008 Introduction to SPARSE Columns Part 2 I wrote about Introduction to SPARSE Columns Part 1. Let us understand the concept of the SPARSE column in more detail. I suggest you read the first part before continuing reading this article. All SPARSE columns are stored as one XML column in the database. Let us see some of the advantage and disadvantage of SPARSE column. Deferred Name Resolution How come when table name is incorrect SP can be created successfully but when an incorrect column is used SP cannot be created? 2009 Backup Timeline and Understanding of Database Restore Process in Full Recovery Model In general, databases backup in full recovery mode is taken in three different kinds of database files. Full Database Backup Differential Database Backup Log Backup Restore Sequence and Understanding NORECOVERY and RECOVERY While doing RESTORE Operation if you restoring database files, always use NORECOVER option as that will keep the database in a state where more backup file are restored. This will also keep database offline also to prevent any changes, which can create itegrity issues. Once all backup file is restored run RESTORE command with a RECOVERY option to get database online and operational. Four Different Ways to Find Recovery Model for Database Perhaps, the best thing about technical domain is that most of the things can be executed in more than one ways. It is always useful to know about the various methods of performing a single task. Two Methods to Retrieve List of Primary Keys and Foreign Keys of Database When Information Schema is used, we will not be able to discern between primary key and foreign key; we will have both the keys together. In the case of sys schema, we can query the data in our preferred way and can join this table to another table, which can retrieve additional data from the same. Get Last Running Query Based on SPID PID is returns sessions ID of the current user process. The acronym SPID comes from the name of its earlier version, Server Process ID. 2010 SELECT * FROM dual – Dual Equivalent Dual is a table that is created by Oracle together with data dictionary. It consists of exactly one column named “dummy”, and one record. The value of that record is X. You can check the content of the DUAL table using the following syntax. SELECT * FROM dual Identifying Statistics Used by Query Someone asked this question in my training class of query optimization and performance tuning.  “Can I know which statistics were used by my query?” 2011 SQL SERVER – Interview Questions and Answers – Frequently Asked Questions – Day 14 of 31 What are the basic functions for master, msdb, model, tempdb and resource databases? What is the Maximum Number of Index per Table? Explain Few of the New Features of SQL Server 2008 Management Studio Explain IntelliSense for Query Editing Explain MultiServer Query Explain Query Editor Regions Explain Object Explorer Enhancements Explain Activity Monitors SQL SERVER – Interview Questions and Answers – Frequently Asked Questions – Day 15 of 31 What is Service Broker? Where are SQL server Usernames and Passwords Stored in the SQL server? What is Policy Management? What is Database Mirroring? What are Sparse Columns? What does TOP Operator Do? What is CTE? What is MERGE Statement? What is Filtered Index? Which are the New Data Types Introduced in SQL SERVER 2008? SQL SERVER – Interview Questions and Answers – Frequently Asked Questions – Day 16 of 31 What are the Advantages of Using CTE? How can we Rewrite Sub-Queries into Simple Select Statements or with Joins? What is CLR? What are Synonyms? What is LINQ? What are Isolation Levels? What is Use of EXCEPT Clause? What is XPath? What is NOLOCK? What is the Difference between Update Lock and Exclusive Lock? SQL SERVER – Interview Questions and Answers – Frequently Asked Questions – Day 17 of 31 How will you Handle Error in SQL SERVER 2008? What is RAISEERROR? What is RAISEERROR? How to Rebuild the Master Database? What is the XML Datatype? What is Data Compression? What is Use of DBCC Commands? How to Copy the Tables, Schema and Views from one SQL Server to Another? How to Find Tables without Indexes? SQL SERVER – Interview Questions and Answers – Frequently Asked Questions – Day 18 of 31 How to Copy Data from One Table to Another Table? What is Catalog Views? What is PIVOT and UNPIVOT? What is a Filestream? What is SQLCMD? What do you mean by TABLESAMPLE? What is ROW_NUMBER()? What are Ranking Functions? What is Change Data Capture (CDC) in SQL Server 2008? SQL SERVER – Interview Questions and Answers – Frequently Asked Questions – Day 19 of 31 How can I Track the Changes or Identify the Latest Insert-Update-Delete from a Table? What is the CPU Pressure? How can I Get Data from a Database on Another Server? What is the Bookmark Lookup and RID Lookup? What is Difference between ROLLBACK IMMEDIATE and WITH NO_WAIT during ALTER DATABASE? What is Difference between GETDATE and SYSDATETIME in SQL Server 2008? How can I Check that whether Automatic Statistic Update is Enabled or not? How to Find Index Size for Each Index on Table? What is the Difference between Seek Predicate and Predicate? What are Basics of Policy Management? What are the Advantages of Policy Management? SQL SERVER – Interview Questions and Answers – Frequently Asked Questions – Day 20 of 31 What are Policy Management Terms? What is the ‘FILLFACTOR’? Where in MS SQL Server is ’100’ equal to ‘0’? What are Points to Remember while Using the FILLFACTOR Argument? What is a ROLLUP Clause? What are Various Limitations of the Views? What is a Covered index? When I Delete any Data from a Table, does the SQL Server reduce the size of that table? What are Wait Types? How to Stop Log File Growing too Big? If any Stored Procedure is Encrypted, then can we see its definition in Activity Monitor? 2012 Example of Width Sensitive and Width Insensitive Collation Width Sensitive Collation: A single-byte character (half-width) represented as single-byte and the same character represented as a double-byte character (full-width) are when compared are not equal the collation is width sensitive. In this example we have one table with two columns. One column has a collation of width sensitive and the second column has a collation of width insensitive. Find Column Used in Stored Procedure – Search Stored Procedure for Column Name Very interesting conversation about how to find column used in a stored procedure. There are two different characters in the story and both are having a conversation about how to find column in the stored procedure. Here are two part story Part 1 | Part 2 SQL SERVER – 2012 Functions – FORMAT() and CONCAT() – An Interesting Usage Generate Script for Schema and Data – SQL in Sixty Seconds #021 – Video In simple words, in many cases the database move from one place to another place. It is not always possible to back up and restore databases. There are possibilities when only part of the database (with schema and data) has to be moved. In this video we learn that we can easily generate script for schema for data and move from one server to another one. INFORMATION_SCHEMA.COLUMNS and Value Character Maximum Length -1 I often see the value -1 in the CHARACTER_MAXIMUM_LENGTH column of INFORMATION_SCHEMA.COLUMNS table. I understand that the length of any column can be between 0 to large number but I do not get it when I see value in negative (i.e. -1). Any insight on this subject? Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Memory Lane, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• Edit in desktop application with DataGridView

  - by SAMIR BHOGAYTA

  private void DataGridView_CellContentClick(object sender, DataGridViewCellEventArgs e) { if (e.ColumnIndex == 0) { string s = DataGridView.Rows[e.RowIndex].Cells[1].FormattedValue.ToString(); srno = Convert.ToInt16(s); FormName objFrm = new FormName(s); objFrm.MdiParent = this.MdiParent; objFrm.Show(); } } //Into the New Form public FormName(string id) { uid = id; i = Convert.ToInt16(id); InitializeComponent(); } //Get Detail As per id public void GetDetail() { string detail = "SELECT fieldname1,fieldname2 FROM TableName where PrimaryKeyField = "+id+""; DataSet ds = new DataSet(); ds = (DataSet)prm.RetriveData(detail); } //RetriveData Function public object RetriveData(string query) { // If you have sql connection use SqlConnection OleDbConnection con = new OleDbConnection(constr); OleDbDataAdapter drap = new OleDbDataAdapter(query, con); con.Open(); DataSet ds = new DataSet(); drap.Fill(ds); con.Close(); return ds; }

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• Microsoft Kinect Sales Are 2X Faster Than iPad

  - by Gopinath

  Apple iPad broke many records and it was crowned as the fastest adopted digital device in the history. 2 million iPads were sold in two months and Apple fan boys are all happy with the news. Here comes some good news for Microsoft lovers – Microsoft’s Kinect is selling twice as fast as Apple iPads. In just 25 days after the launch, 2 million Kinects are sold across the globe – that means 100K Kinect sales per day. Very impressive! Kinect was originally released for XBox 360 gaming console but hackers and geeks are able to connect Kinect to Windows 7 PC to control computers using gestures. The possibilities Kinect usage in building natural user interfaces looks very promising. If this growth sustains after the festive season, Microsoft Kinect will displace iPad from the crown of fastest adopted digital device. More details at Xbox 360 Surpasses 2.5 Million Kinect Sensors Sold This article titled,Microsoft Kinect Sales Are 2X Faster Than iPad, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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• Meta-licensing of applications

  - by Gene

  I'm currently evaluating license management solutions for our customized and project-based applications, which are supported by a single server in the intranet of the customer. The applications use common functionality provided by the server (session handling, data synchronization, management capabilities, etc) and are installed on mobile devices. We allow our customers to run the applications on X devices and want to check on the server, whether the customer sticks to this limit (based on the sessions). We don't want licensing software to be installed on the devices itself (for example providing X serials to the customer) nor do we want to host an additional server for licensing in the intranet of the customer. If a client connects, our server should load the license for the application running on the client and verify, that there are sessions left. The licensing managers I looked at (12 products so far) focus on the application itself and don't allow me to implement such a floating behavior as described above. For example, this software could easily be used to create a "Standard Edition" or a "Professional Edition" of our server software, which is not our intention. In XHEO DeployLX there is a "Session Limit", which allows to limit the license to the currently established sessions in ASP.NET, which comes very close to my needs. I'm currently thinking of implementing a custom solution, which allows me to load and enforce custom-defined licenses per application on the server-side and a simple editor to define such licenses (which would contain a type and the limit itself), but I would appreciate an existing, easy to integrate commercial solution. I think it could be possible to use DeployLX for this task, but I would spend a lot of money for implementing most of the solution myself (except for the editor). Thanks in advance for any suggestions or hints. Gene

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• BPM 11g and Human Workflow Shadow Rows by Adam Desjardin

  - by JuergenKress

  During the OFM Forum last week, there were a few discussions around the relationship between the Human Workflow (WF_TASK*) tables in the SOA_INFRA schema and BPMN processes.  It is important to know how these are related because it can have a performance impact.  We have seen this performance issue several times when BPMN processes are used to model high volume system integrations without knowing all of the implications of using BPMN in this pattern. Most people assume that BPMN instances and their related data are stored in the CUBE_*, DLV_*, and AUDIT_* tables in the same way that BPEL instances are stored, with additional data in the BPM_* tables as well.  The group of tables that is not usually considered though is the WF* tables that are used for Human Workflow.  The WFTASK table is used by all BPMN processes in order to support features such as process level comments and attachments, whether those features are currently used in the process or not. For a standard human task that is created from a BPMN process, the following data is stored in the WFTASK table: One row per human task that is created The COMPONENTTYPE = "Workflow" TASKDEFINITIONID = Human Task ID (partition/CompositeName!Version/TaskName) ACCESSKEY = NULL Read the complete article here. SOA & BPM Partner Community For regular information on Oracle SOA Suite become a member in the SOA & BPM Partner Community for registration please visit www.oracle.com/goto/emea/soa (OPN account required) If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Facebook Wiki

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• Oracle Utilities Application Framework V4.1 Group Fix 4 available

  - by ACShorten

  Oracle Utilities Application Framework V4.1 Group Fix 4 is available from My Oracle Support as Patch 13523301. This Group Fix contains a number of enhancements and keeps fixes up to date to the latest patch level. The enhancements included in this Group Fix include: UI Hints - In previous group fixes of the Oracle Utilities Application Framework the infrastructure to support UI Hints was introduced. This group fix completes the release of this functionality. Prior to this enhancement, products and implementers typically would build at least one UI Map per Business Object to display and/or maintain the object. Whilst, this can be generated using the UI Map maintenance function and stored, this enhancement allows additional tags and elements to be added to the Business Object directly to allow dynamic generation of the UI Map for maintenance and viewing the object. This reduces the need to generate and build a UI Map at all for that object. This will reduce maintenance effort of maintaining the product and implementation by eliminating the need to maintain the HTML for the UI Map. This also allows lower skilled personnel to maintain the system. Help and working examples are available from the View schema attributes and node names option from the Schema Tips dashboard zone. For example: Note: For examples of the hints, refer to an of the following Business Objects F1_OutcomeStyleLookup, F1-TodoSumEmailType, F1-BOStatusReason or F1-BIGeneralMasterConfig. Setting batch log file names -  By default the batch infrastructure supplied with the Oracle Utilities Application Framework sets the name and location of the log files to set values. In Group Fix 4 a set of user exits have been added to allow implementers and partners to set their own filename and location.  Refer to the Release Notes in the download for more details.

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• Track a Adobe Flash app hosted on multiple domains with Google Analytics

  - by roberkules

  I'm working on a flash app that's gonna be distributed to more and more partners (and obviously domains). It needs to be tracked aggregated and also separately. I implemented Google Analytics using gaforflash, tracking virtual pageviews and events inside the flash app. What I want to achieve: View an aggregated report of all partners. Identify the partner not by the domain (where the flash is used), but by a partnerID. Each partner needs access to the report of his domain. (no admin rights needed) I came up with this solution: Using only one "Web property" in Google Analytics. UA-XXXXXX-4 .example.com Set a custom/virtual hostname per partner. (GA's "utmhn" parameter) partner1.example.com partner2.example.com Create a profile for each partner, setting the filter to include only the relevant "subdomain" Problems that came up: The gaforflash library doesn't support overriding the host name. Possible workaround: The gaforflash source code is available, so I could add the functionality. Any goal from the "master" profile is not copied to the partners profile. profile 1: include traffic from hostname ^partner1\. profile 2: include traffic from hostname ^partner2\. Is it (very) bad to fake the hostname? Are there better approaches? Or what improvements could you think of? UPDATE: I'm looking primarily for a solid data structure inside Google Analytics regardless of the flash implementation. The only limitations: We need an aggregated view across all partners Our partners need to have access to their subset of data We want to identify the partner by a custom partnerID, not the domain

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• Killer content for my Kindle - The Economist with no need for an iPad - yipeee!

  - by Liam Westley

  I admin it, I was jealous of someone's iPad. They were reading The Economist, for free, as they were a print subscriber. I'm a print subscriber too. However, I don't have an iPad or an iPhone, just an Android phone and a Kindle. As soon as I got the Kindle, I looked up how to get The Economist on it. £9.99 per month. Hmmm, twice as much again as a my print subscription and I wanted to maintain the print subscription. No way Amazon. Fortunately some nice person wrote similar comments on The Economist subscription for Kindle, but added a very important additional nugget of information; and there is no need, as a print subscriber you can just use the free Calibre e-book creation tool anyway. So I downloaded it, searched for The Economist online 'recipe', entered my login name and password (part of my print subscription) and off went Calibre to screen scrape every single article from the Christmas 2010 issue into a .mobi file, complete with front cover image and full indexing. It's wonderful. Truely wonderful. Every section individually indexed, with each article separated and all inline images preserved. It even feels wonderfully retro, back to the days when The Economist only used black and white images. So many thanks the guys behind Calibre and The Economist recipe creators. Finally, I have my essential Kindle content that I've been waiting for.

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• Correct way to drive Main Loop in Cocoa

  - by Kyle

  I'm writing a game that currently runs in both Windows and Mac OS X. My main game loop looks like this: while(running) { ProcessOSMessages(); // Using Peek/Translate message in Win32 // and nextEventMatchingMask in Cocoa GameUpdate(); GameRender(); } Thats obviously simplified a bit, but thats the gist of it. In Windows where I have full control over the application, it works great. Unfortunately Apple has their own way of doing things in Cocoa apps. When I first tried to implement my main loop in Cocoa, I couldn't figure out where to put it so I created my own NSApplication per this post. I threw my GameFrame() right in my run function and everything worked correctly. However, I don't feel like its the "right" way to do it. I would like to play nicely within Apple's ecosystem rather than trying to hack a solution that works. This article from apple describes the old way to do it, with an NSTimer, and the "new" way to do it using CVDisplayLink. I've hooked up the CVDisplayLink version, but it just feels....odd. I don't like the idea of my game being driven by the display rather than the other way around. Are my only two options to use a CVDisplayLink or overwrite my own NSApplication? Neither one of those solutions feels quite right.

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• Improving the performance of a db import process

  - by mmr

  I have a program in Microsoft Access that processes text and also inserts data in MySQL database. This operation takes 30 mins or less to finished. I translated it into VB.NET and it takes 2 hours to finish. The program goes like this: A text file contains individual swipe from a corresponding person, it contains their id, time and date of swipe in the machine, and an indicator if it is a time-in or a time-out. I process this text, segregate the information and insert the time-in and time-out per row. I also check if there are double occurrences in the database. After checking, I simply merge the time-in and time-out of the corresponding person into one row only. This process takes 2 hours to finished in VB.NET considering I have a table to compare which contains 600,000+ rows. Now, I read in the internet that python is best in text processing, i already have a test but i doubt in database operation. What do you think is the best programming language for this kind of problem? How can I speed up the process? My first idea was using python instead of VB.NET, but since people here telling me here on SO that this most probably won't help I am searching for different solutions.

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• Call for Abstracts Now Open for Microsoft ASP.NET Connections (Closing April 26)

  - by plitwin

  We are putting out a call for abstracts to present at the Fall 2010 Microsoft ASP.NET Connections conference in Las Vegas, Nov 9-13 2009. The due date for submissions is April 26, 2010. For submitting sessions, please use this URL: http://www.deeptraining.com/devconnections/abstracts Please keep the abstracts under 200 words each and in one paragraph. No bulleted items and line breaks, and please use a spell-checker. Do not email abstracts, you need to use the web-based tool to submit them. Please submit at least 3 abstracts, but it would help your chances of being selected if you submitted 5 or more abstracts. Also, you are encouraged to suggest all-day pre or post conference workshops as well. We need to finalize the conference content and the tracks layout in just a few short weeks, so we need your abstracts by April 26th. No exceptions will be granted on late submissions! Topics of interest include (but are not limited to):* ASP.NET Webforms* ASP.NET AJAX* ASP.NET MVC* Dynamic Data* Anything else related to ASP.NET For Fall 2010, we are having a seperate Silverlight conference where you can submit abstracts for Silverlight and Windows 7 Phone Development. In fact, you can use the same URL to submit sessions to Microsoft ASP.NET Connections, Silverlight Connections, Visual Studio Connections, or SQL Server Connections. The URL again is:http://www.deeptraining.com/devconnections/abstracts Please realize that while we want a lot of the new and the cool, it's also okay to propose sessions on the more mundane "real world" stuff as it pertains to ASP.NET. What you will get if selected:* $500 per regular conference talk.* Compensation for full-day workshops ranges from $500 for 1-20 attendees to $2500 for 200+ attendees.* Coach airfare and hotel stay paid by the conference.* Free admission to all of the co-located conferences* Speaker party* The adoration of attendees* etc. Your continued suport of Microsoft ASP.NET Connections and the other DevConnections conferences is appreciated. Good luck and thank you,Paul LitwinMicrosoft ASP.NET Conference Chair

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• SEO Implications of creating Niche Product Blogs vs Main Company Blog with Categories.

  - by Frank

  Our company has a dilemma that I am hoping the users of Pro WebMasters can help us with. Right now as it stands we create a seperate website for each product that we sell. We also have our corporate site which lists each of these brands. For Example: www.Apple.com < --- main company site www.Ipad.com <--- Product www.Iphone.com <--- Product www.Imac.com <-- Product We are looking to build a wordpress blog mainly for the purpose of increasing our SEO rank. Here are our two options: SINGLE BLOG - On Our Corporate Domain http://apple.com/blog Each post is categoried http://apple.com/category/ipad/ipad-5-realeasd.htm Easier to manage than multiple blogs More content since its listing about all our products. ONE BLOG PER PRODUCT - on each site http://ipad.com/blog Each product has its own blog with only its own articles Harder to manage, but does it benefit SEO? Can the team here tell me the SEO benefits of either approach? Similar to Apple all the products our company sells are loosely related. Although its not likely that a customer of product A would be interested in product B.

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• Few basic Billing facts

  - by Rajesh Sharma

  Quick basic points on Billing: In batch billing, there can be one and ONLY ONE bill for an Account, per Bill Cycle. If an Account has been already billed within the current Bill Cycle's window period, it will not be billed again and will be skipped by the Bill Segment generation program, part of batch eligibility check routine. If an Account does not have any Stopped Service Agreements and you attempt to generate a Bill for that Account that too for a period for which it was already billed, no Bill Segments are generated and a Pending Bill is created for that Account. If a Pending Bill exists for an Account and was generated from a batch, the Account will be re-billed in the next batch run. In contrast, if a Pending Bill exists for an Account and was generated online, the Account will be skipped in the next batch run of the Account's Bill Cycle. Bill generation source, Batch or Online at DB level is determined as following: Batch = CI_BILL.BILL_CYC_CD = {Bill Cycle Code} and CI_BILL.WIN_START_DT = {Window Start Date} Online = CI_BILL.BILL_CYC_CD = "" and CI_BILL.WIN_START_DT IS NULL Bill generation source, Batch or Online from Bill page is determined as following: Batch Online   Closing/Final Bill segment is generated for Stopped Service Agreements and is determined as follows: DB level CI_BSEG.CLOSING_BSEG_SW = "Y" Bill Segment page

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• An XML file or Database?

  - by webnoob

  I am re-writing a section of my site and am trying to decide how much of a rewrite this will be. At the moment I have a web service feed that generates an xml once per day. I then use this xml file on my website to generate the general structure. I am trying to decide if this information should be located in the database or stay in the xml file. The file can range from 4mb - 12mb. The files depth can go on and on so I have to recurse to find the data I want. I use the .NET serializer classes and store the serialized file in a global variable to avoid re-serializing it each time the page is loaded. My reasons for thinking a database would be better are: I would know exactly where I am in the file by using an internal ID so I wouldn't have to recurse the file to get information. I wouldn't have to load / serialize the XML and could just use my already open database connections. Searching for the data in the file would be quicker(?) as I would just perform an SQL query rather than re-cursing the file. Has anyone got any ideas which is better and which option uses more resources on the server or be quicker? EDIT: The file is read every time the web page is loaded (although only serialized once). It isn't written to by standard users (only by an admin task that runs in the middle of the night). This is my initial investigation before mocking up.

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• How to tell if SPARC T4 crypto is being used?

  - by danx

  A question that often comes up when running applications on SPARC T4 systems is "How can I tell if hardware crypto accleration is being used?" To review, the SPARC T4 processor includes a crypto unit that supports several crypto instructions. For hardware crypto these include 11 AES instructions, 4 xmul* instructions (for AES GCM carryless multiply), mont for Montgomery multiply (optimizes RSA and DSA), and 5 des_* instructions (for DES3). For hardware hash algorithm optimization, the T4 has the md5, sha1, sha256, and sha512 instructions (the last two are used for SHA-224 an SHA-384). First off, it's easy to tell if the processor T4 crypto instructions—use the isainfo -v command and look for "sparcv9" and "aes" (and other hash and crypto algorithms) in the output: $ isainfo -v 64-bit sparcv9 applications crc32c cbcond pause mont mpmul sha512 sha256 sha1 md5 camellia kasumi des aes ima hpc vis3 fmaf asi_blk_init vis2 vis popc These instructions are not-privileged, so are available for direct use in user-level applications and libraries (such as OpenSSL). Here is the "openssl speed -evp" command shown with the built-in t4 engine and with the pkcs11 engine. Both run the T4 AES instructions, but the t4 engine is faster than the pkcs11 engine because it has less overhead (especially for smaller packet sizes): t-4 $ /usr/bin/openssl version OpenSSL 1.0.0j 10 May 2012 t-4 $ /usr/bin/openssl engine (t4) SPARC T4 engine support (dynamic) Dynamic engine loading support (pkcs11) PKCS #11 engine support t-4 $ /usr/bin/openssl speed -evp aes-128-cbc # t4 engine used by default . . . The 'numbers' are in 1000s of bytes per second processed. type 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes aes-128-cbc 487777.10k 816822.21k 986012.59k 1017029.97k 1053543.08k t-4 $ /usr/bin/openssl speed -engine pkcs11 -evp aes-128-cbc engine "pkcs11" set. . . . The 'numbers' are in 1000s of bytes per second processed. type 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes aes-128-cbc 31703.58k 116636.39k 350672.81k 696170.50k 993599.49k Note: The "-evp" flag indicates use the OpenSSL "EnVeloPe" API, which gives more accurate results. That's because it tells OpenSSL to use the same API that external programs use when calling OpenSSL libcrypto functions, evp(3openssl). DTrace Shows if T4 Crypto Functions Are Used OK, good enough, the isainfo(1) command shows the instructions are present, but how does one know if they are being used? Chi-Chang Lin, who works on Oracle Solaris performance, wrote a Dtrace script to show if T4 instructions are being executed. To show the T4 instructions are being used, run the following Dtrace script. Look for functions named "t4" and "yf" in the output. The OpenSSL T4 engine uses functions named "t4" and the PKCS#11 engine uses functions named "yf". To demonstrate, I'll first run "openssl speed" with the built-in t4 engine then with the pkcs11 engine. The performance numbers are not valid due to dtrace probes slowing things down. t-4 # dtrace -Z -n ' pid$target::*yf*:entry,pid$target::*t4_*:entry{ @[probemod, probefunc] = count();}' \ -c "/usr/bin/openssl speed -evp aes-128-cbc" dtrace: description 'pid$target::*yf*:entry' matched 101 probes . . . dtrace: pid 2029 has exited libcrypto.so.1.0.0 ENGINE_load_t4 1 libcrypto.so.1.0.0 t4_DH 1 libcrypto.so.1.0.0 t4_DSA 1 libcrypto.so.1.0.0 t4_RSA 1 libcrypto.so.1.0.0 t4_destroy 1 libcrypto.so.1.0.0 t4_free_aes_ctr_NIDs 1 libcrypto.so.1.0.0 t4_init 1 libcrypto.so.1.0.0 t4_add_NID 3 libcrypto.so.1.0.0 t4_aes_expand128 5 libcrypto.so.1.0.0 t4_cipher_init_aes 5 libcrypto.so.1.0.0 t4_get_all_ciphers 6 libcrypto.so.1.0.0 t4_get_all_digests 59 libcrypto.so.1.0.0 t4_digest_final_sha1 65 libcrypto.so.1.0.0 t4_digest_init_sha1 65 libcrypto.so.1.0.0 t4_sha1_multiblock 126 libcrypto.so.1.0.0 t4_digest_update_sha1 261 libcrypto.so.1.0.0 t4_aes128_cbc_encrypt 1432979 libcrypto.so.1.0.0 t4_aes128_load_keys_for_encrypt 1432979 libcrypto.so.1.0.0 t4_cipher_do_aes_128_cbc 1432979 t-4 # dtrace -Z -n 'pid$target::*yf*:entry{ @[probemod, probefunc] = count();}   pid$target::*yf*:entry,pid$target::*t4_*:entry{ @[probemod, probefunc] = count();}' \ -c "/usr/bin/openssl speed -engine pkcs11 -evp aes-128-cbc" dtrace: description 'pid$target::*yf*:entry' matched 101 probes engine "pkcs11" set. . . . dtrace: pid 2033 has exited libcrypto.so.1.0.0 ENGINE_load_t4 1 libcrypto.so.1.0.0 t4_DH 1 libcrypto.so.1.0.0 t4_DSA 1 libcrypto.so.1.0.0 t4_RSA 1 libcrypto.so.1.0.0 t4_destroy 1 libcrypto.so.1.0.0 t4_free_aes_ctr_NIDs 1 libcrypto.so.1.0.0 t4_get_all_ciphers 1 libcrypto.so.1.0.0 t4_get_all_digests 1 libsoftcrypto.so.1 rijndael_key_setup_enc_yf 1 libsoftcrypto.so.1 yf_aes_expand128 1 libcrypto.so.1.0.0 t4_add_NID 3 libsoftcrypto.so.1 yf_aes128_cbc_encrypt 1542330 libsoftcrypto.so.1 yf_aes128_load_keys_for_encrypt 1542330 So, as shown above the OpenSSL built-in t4 engine executes t4_* functions (which are hand-coded assembly executing the T4 AES instructions) and the OpenSSL pkcs11 engine executes *yf* functions. Programmatic Use of OpenSSL T4 engine The OpenSSL t4 engine is used automatically with the /usr/bin/openssl command line. Chi-Chang Lin also points out that if you're calling the OpenSSL API (libcrypto.so) from a program, you must call ENGINE_load_built_engines(), otherwise the built-in t4 engine will not be loaded. You do not call ENGINE_set_default(). That's because "openssl speed -evp" test calls ENGINE_load_built_engines() even though the "-engine" option wasn't specified. OpenSSL T4 engine Availability The OpenSSL t4 engine is available with Solaris 11 and 11.1. For Solaris 10 08/11 (U10), you need to use the OpenSSL pkcs311 engine. The OpenSSL t4 engine is distributed only with the version of OpenSSL distributed with Solaris (and not third-party or self-compiled versions of OpenSSL). The OpenSSL engine implements the AES cipher for Solaris 11, released 11/2011. For Solaris 11.1, released 11/2012, the OpenSSL engine adds optimization for the MD5, SHA-1, and SHA-2 hash algorithms, and DES-3. Although the T4 processor has Camillia and Kasumi block cipher instructions, these are not implemented in the OpenSSL T4 engine. The following charts may help view availability of optimizations. The first chart shows what's available with Solaris CLIs and APIs, the second chart shows what's available in Solaris OpenSSL. Native Solaris Optimization for SPARC T4 This table is shows Solaris native CLI and API support. As such, they are all available with the OpenSSL pkcs11 engine. CLIs: "openssl -engine pkcs11", encrypt(1), decrypt(1), mac(1), digest(1), MD5sum(1), SHA1sum(1), SHA224sum(1), SHA256sum(1), SHA384sum(1), SHA512sum(1) APIs: PKCS#11 library libpkcs11(3LIB) (incluDES Openssl pkcs11 engine), libMD(3LIB), and Solaris kernel modules AlgorithmSolaris 1008/11 (U10)Solaris 11Solaris 11.1 AES-ECB, AES-CBC, AES-CTR, AES-CBC AES-CFB128 XXX DES3-ECB, DES3-CBC, DES2-ECB, DES2-CBC, DES-ECB, DES-CBC XXX bignum Montgomery multiply (RSA, DSA) XXX MD5, SHA-1, SHA-256, SHA-384, SHA-512 XXX SHA-224 X ARCFOUR (RC4) X Solaris OpenSSL T4 Engine Optimization This table is for the Solaris OpenSSL built-in t4 engine. Algorithms listed above are also available through the OpenSSL pkcs11 engine. CLI: openssl(1openssl) APIs: openssl(5), engine(3openssl), evp(3openssl), libcrypto crypto(3openssl) AlgorithmSolaris 11Solaris 11SRU2Solaris 11.1 AES-ECB, AES-CBC, AES-CTR, AES-CBC AES-CFB128 XXX DES3-ECB, DES3-CBC, DES-ECB, DES-CBC X bignum Montgomery multiply (RSA, DSA) X MD5, SHA-1, SHA-256, SHA-384, SHA-512 XX SHA-224 X Source Code Availability Solaris Most of the T4 assembly code that called the new T4 crypto instructions was written by Ferenc Rákóczi of the Solaris Security group, with assistance from others. You can download the Solaris source for this and other parts of Solaris as a few zip files at the Oracle Download website. The relevant source files are generally under directories usr/src/common/crypto/{aes,arcfour,des,md5,modes,sha1,sha2}}/sun4v/. and usr/src/common/bignum/sun4v/. Solaris 11 binary is available from the Oracle Solaris 11 download website. OpenSSL t4 engine The source for the OpenSSL t4 engine, which is based on the Solaris source above, is viewable through the OpenGrok source code browser in directory src/components/openssl/openssl-1.0.0/engines/t4 . You can download the source from the same website or through Mercurial source code management, hg(1). Conclusion Oracle Solaris with SPARC T4 provides a rich set of accelerated cryptographic and hash algorithms. Using the latest update, Solaris 11.1, provides the best set of optimized algorithms, but alternatives are often available, sometimes slightly slower, for releases back to Solaris 10 08/11 (U10). Reference See also these earlier blogs. SPARC T4 OpenSSL Engine by myself, Dan Anderson (2011), discusses the Openssl T4 engine and reviews the SPARC T4 processor for the Solaris 11 release. Exciting Crypto Advances with the T4 processor and Oracle Solaris 11 by Valerie Fenwick (2011) discusses crypto algorithms that were optimized for the T4 processor with the Solaris 11 FCS (11/11) and Solaris 10 08/11 (U10) release. T4 Crypto Cheat Sheet by Stefan Hinker (2012) discusses how to make T4 crypto optimization available to various consumers (such as SSH, Java, OpenSSL, Apache, etc.) High Performance Security For Oracle Database and Fusion Middleware Applications using SPARC T4 (PDF, 2012) discusses SPARC T4 and its usage to optimize application security. Configuring Oracle iPlanet WebServer / Oracle Traffic Director to use crypto accelerators on T4-1 servers by Meena Vyas (2012)

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• SQL SERVER – T-SQL Scripts to Find Maximum between Two Numbers

  - by pinaldave

  There are plenty of the things life one can make it simple. I really believe in the same. I was yesterday traveling for community related activity. On airport while returning I met a SQL Enthusiast. He asked me if there is any simple way to find maximum between two numbers in the SQL Server. I asked him back that what he really mean by Simple Way and requested him to demonstrate his code for finding maximum between two numbers. Here is his code: DECLARE @Value1 DECIMAL(5,2) = 9.22 DECLARE @Value2 DECIMAL(5,2) = 8.34 SELECT (0.5 * ((@Value1 + @Value2) + ABS(@Value1 - @Value2))) AS MaxColumn GO I thought his logic was accurate but the same script can be written another way. I quickly wrote following code for him and which worked just fine for him. Here is my code: DECLARE @Value1 DECIMAL(5,2) = 9.22 DECLARE @Value2 DECIMAL(5,2) = 8.34 SELECT CASE WHEN @Value1 > @Value2 THEN @Value1 ELSE @Value2 END AS MaxColumn GO He agreed that my code is much simpler but as per him there is some problem with my code which apparently he does not remember at this time. There are cases when his code will give accurate values and my code will not. I think his comment has value but both of us for the moment could not come up with any valid reason. Do you think any scenario where his code will work and my suggested code will not work? Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• Advantages of using pure JavaScript over JQuery

  - by Shivan Dragon

  What are the advantages of using Javascript-only versus using JQuery-only? I have limited experience with JavaScript and JQuery coding. I've added bits and snippets of each to HTML pages but I've mostly coded server-side stuff in other languages. I've noticed that while you can theoretically do the same things using either of the two approaches (and of course you can even mix 'em up in the same project) there seems to be a tendency to always start using JQuery from the very beginning no-matter what the project demands are. So I'm simply wondering, are there any punctual benefits to not use JQuery-only but instead to just use plain old JavaScript? I know this looks like a non-question because it can be said about it that "there's no definite answer" or "it can be debated for ever", but I'm actually hoping for punctual answers such as "You can do this in one approach and you cannot do it with the other". ==EDIT== As per scrwtp's comment, I'm not referring just to the DOM Handling part. My question is rather: JQuery is a library. For Javascript. What I find strange about this library as opposed to other libraries for other languages is that in JQyery's case it seems to be designed to be able to use it exclusively and not need to touch Javascript directly. This is as opposed to let's say Hibernate and SQL, where even though the library (or rather framework in this case, but I think the analogy still applies) takes the handle on A LOT of aspects, you still get to use SQL when using it, at least for some fringe cases. However in JQuery & Javascript case, you could do anything you do with Javascript using only JQuery (or at least that's how it seems to me).

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• SQL SERVER – How to an Add Identity Column to Table in SQL Server

  - by Pinal Dave

  Here is the question I received on SQLAuthority Fan Page. “How do I add an identity column to Table in SQL Server? “ Sometime the questions are very very simple but the answer is not easy to find. Scenario 1: If you are table does not have identity column, you can simply add the identity column by executing following script: ALTER TABLE MyTable ADD ID INT IDENTITY(1,1) NOT NULL Scenario 2: If your table already has a column which you want to convert to identity column, you can’t do that directly. There is a workaround for the same which I have discussed in depth over the article Add or Remove Identity Property on Column. Scenario 3: If your table has already identity column and you can want to add another identity column for any reason – that is not possible. A table can have only one identity column. If you try to have multiple identity column your table, it will give following error. Msg 2744, Level 16, State 2, Line 2 Multiple identity columns specified for table ‘MyTable‘. Only one identity column per table is allowed. Leave a comment if you have any suggestion. Reference : Pinal Dave (http://blog.SQLAuthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL Tagged: Identity

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• css: zoooming-out inside the browser moves rightmost floated div below other divs

  - by John Sonderson

  I am seeing something strange in both firefox and chrome when I increase the zoom level inside these browsers, although I see nothing wrong with my CSS... I am hoping someone on this group will be able to help. Here is the whole story: I have a right-floated top-level div containing three right-floated right. The three inner divs have all box-model measurements in pixels which add up to the width of the enclosing container. Everything looks fine when the browser size is 100%, but when I start making the browser smaller with CTRL+scrollwheel or CTRL+minus the rightmost margin shrinks down too fast and eventually becomes zero, forcing my rightmost floated inner div to fall down below the other two! I can't make sense out of this, almost seems like some integer division is being performed incorrectly in the browser code, but alas firefox and chrome both display the same result. Here is the example (just zoom out with CTRL-minus to see what I mean): Click Here to View What I Mean on Example Site Just to narrow things down a bit, the tags of interest are the following: div#mainContent div#contentLeft div#contentCenter div#contentRight I've searched stackoverflow for an answer and found the following posts which seem related to my question but was not able to apply them to the problem I am experiencing: http:// stackoverflow.com/questions/6955313/div-moves-incorrectly-on-browser-resize http:// stackoverflow.com/questions/18246882/divs-move-when-resizing-page http:// stackoverflow.com/questions/17637231/moving-an-image-when-browser-resizes http:// stackoverflow.com/questions/5316380/how-to-stop-divs-moving-when-the-browser-is-resized I've duplicated the html and css code below for your convenience: Here is the HTML: <!doctype html> <html> <head> <meta charset="utf-8"> <title>Pinco</title> <link href="css/style.css" rel="stylesheet" type="text/css"> </head> <body> <div id="wrapper"> <header> <div class="logo"> <a href="http://pinco.com"> <img class="logo" src="images/PincoLogo5.png" alt="Pinco" /> </a> </div> <div class="titolo"> <h1>Benvenuti!</h1> <h2>Siete arrivati al sito pinco.</h2> </div> <nav> <ul class="menu"> <li><a href="#">Menù Qui</a></li> <li><a href="#">Menù Quo</a></li> <li><a href="#">Menù Qua</a></li> </ul> </nav> </header> <div id="mainContent"> <div id="contentLeft"> <section> <article> <p> Lorem ipsum dolor sit amet, consectetur adipiscing elit. Quisque tempor turpis est, nec varius est pharetra scelerisque. Sed eu pellentesque purus, at cursus nisi. In bibendum tristique nunc eu mattis. Nulla pretium tincidunt ipsum, non imperdiet metus tincidunt ac. In et lobortis elit, nec lobortis purus. Cras ac viverra risus. Proin dapibus tortor justo, a vulputate ipsum lacinia sed. In hac habitasse platea dictumst. Phasellus sit amet malesuada velit. Fusce diam neque, cursus id dui ac, blandit vehicula tortor. Phasellus interdum ipsum eu leo condimentum, in dignissim erat tincidunt. Ut fermentum consectetur tellus, dignissim volutpat orci suscipit ac. Praesent scelerisque urna metus. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Duis pulvinar, sem a sodales eleifend, odio elit blandit risus, a dapibus ligula orci non augue. Nullam vitae cursus tortor, eget malesuada lectus. Nulla facilisi. Cras pharetra nisi sit amet orci dignissim, a eleifend odio hendrerit. </p> </article> </section> </div> <div id="contentCenter"> <section> <article> <p> Maecenas vitae purus at orci euismod pretium. Nam gravida gravida bibendum. Donec nec dolor vel magna consequat laoreet in a urna. Phasellus cursus ultrices lorem ut sagittis. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Vivamus purus felis, ornare quis ante vel, commodo scelerisque tortor. Integer vel facilisis mauris. </p> <img src="images/auto1.jpg" width="272" height="272" /> <p> In urna purus, fringilla a urna a, ultrices convallis orci. Duis mattis sit amet leo sed luctus. Donec nec sem non nunc mattis semper quis vitae enim. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Suspendisse dictum porta quam, vel lobortis enim bibendum et. Donec iaculis tortor id metus interdum, hendrerit tincidunt orci tempor. Sed dignissim cursus mattis. </p> </article> </section> </div> <div id="contentRight"> <section> <article> <img src="images/auto2.jpg" width="272" height="272" /> <img src="images/auto3.jpg" width="272" height="272" /> <p> Cras eu quam lobortis, sodales felis ultricies, rhoncus neque. Aenean nisi eros, blandit ac lacus sit amet, vulputate sodales mi. Nunc eget purus ultricies, aliquam quam sit amet, porttitor velit. In imperdiet justo in quam tristique, eget semper nisi pellentesque. Cras fringilla eros enim, in euismod nisl imperdiet ac. Fusce tempor justo vitae faucibus luctus. </p> </article> </section> </div> </div> <footer> <div class="footerText"> <p> Copyright &copy; Pinco <br />Lorem ipsum dolor sit amet, consectetur adipiscing elit. <br />Fusce ornare turpis orci, nec egestas leo feugiat ac. <br />Morbi eget sem facilisis, laoreet erat ut, tristique odio. Proin sollicitudin quis nisi id consequat. </p> </div> <div class="footerLogo"> <img class="footerLogo" src="images/auto4.jpg" width="80" height="80" /> </div> </footer> </div> </body> </html> and here is the CSS: /* CSS Document */ * { margin: 0; border: 0; padding: 0; } body { background: #8B0000; /* darkred */; } body { margin: 0; border: 0; padding: 0; } div#wrapper { margin: 0 auto; width: 960px; height: 100%; background: #FFC0CB /* pink */; } header { position: relative; background: #005b97; height: 140px; } header div.logo { float: left; width: 360px; height: 140px; } header div.logo img.logo { width: 360px; height: 140px; } header div.titolo { float: left; padding: 12px 0 0 35px; color: black; } header div.titolo h1 { font-size: 36px; font-weight: bold; } header div.titolo h2 { font-size: 24px; font-style: italic; font-weight: bold; color: white;} header nav { position: absolute; right: 0; bottom: 0; } header ul.menu { background: black; } header ul.menu li { display: inline-block; padding: 3px 15px; font-weight: bold; } div#mainContent { float: left; width: 100%; /* width: 960px; *//* height: 860px; */ padding: 30px 0; text-align: justify; } div#mainContent img { margin: 12px 0; } div#contentLeft { height: 900px; float: left; margin-left: 12px; border: 1px solid black; padding: 15px; width: 272px; background: #ccc; } div#contentCenter { height: 900px; float: left; margin-left: 12px; border: 1px solid transparent; padding: 15px; width: 272px; background: #E00; } div#contentRight { height: 900px; float: left; margin-left: 12px; border: 1px solid black; padding: 15px; width: 272px; background: #ccc; } footer { clear: both; padding: 12px; background: #306; color: white; height: 80px; font-style: italic; font-weight: bold; } footer div.footerText { float: left; } footer div.footerLogo { float: right; } a { color: white; text-decoration: none; } Thanks.

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• "Give with Bing" - Help raise money for Sports relief while searching for whatever you want

  - by Testas

  While Sport Relief drives fundraising by challenging people to do physical activities such as running a mile, we’re introducing the ‘Bing Search Mile,’ which gives people the ability to search using Bing and raise money for charity. For every 10 searches made, Bing.com will donate 5p to Sport Relief 2010, enabling you, and your friends and family, to raise money just by searching with Bing until the end of March. With the average mile taking about 10 minutes to run, in the same time, you can make up to 150 searches online - that’s 75p raised for a good cause per ‘search mile’. And while you’re at it,  why not step it up a gear and aim to complete a ‘Search Mile’ each day or even a ‘Search Marathon’ over the 5 week campaign with your colleagues, friends and family? How to get involved: 1.      Visit GiveWithBing.com and download the Official Sport Relief Bing Counter. Once downloaded, the Sport Relief counter will count all the searches you do on Bing from that point on.  2.      Now that you’re registered (and signed in), invite your friends, family, colleagues or classmates to join in the fundraising with you – GiveWithBing.com automatically generates an email explaining how it works for you to send them – the more people who search with you, the more money you raise. People can also register a school 3.      Run your ‘search mile’ every day and watch how your searches turn into life-changing cash for charity, with every 10 searches equalling 5p for Sport Relief. You can check your progress by visiting your individual page (more info here).  This is such a positive initiative and I challenge everyone in the UK to invite their key contacts to be part of Give with Bing.   Chris

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• Oracle SOA Suite for healthcare integration Dashboard By Nitesh Jain

  - by JuergenKress

  Oracle SOA Suite Healthcare came up with a new way of monitoring where user can configure a dashboard and follow the dynamic runtime changes. Oracle SOA Suite for healthcare integration dashboards display information about the current health of the endpoints in a healthcare integration application. You can create and configure multiple dashboards as needed to monitor the status and volume metrics for the endpoints you have defined. The Dashboards reflects changes that occur in the runtime repository, such as purging runtime instance data, new messages processed, and new error messages. You can display data for various time periods, and you can manually refresh the data in real time or set the dashboard to automatically refresh at set intervals. Dashboard shows the following information: Status: The current status of the endpoint, such as Running, Idle, Disabled, or Errors. Messages Sent: The number of messages sent by the endpoint in the specified time period. Messages Received: The number of messages received by the endpoint in the specified time period. Errors: The number of messages with errors for the endpoint in the given time period. Last Sent: The date and time the last message was sent from the endpoint. Last Received: The date and time the last message was received from the endpoint. Last Error: The date and time of the last error for the endpoint. It also shows the detailed view of a specific Endpoint. The document type. The number of messages received per second. The total number of message processed in the specified time period. The average size of each message. For more information please visit Nitesh Jain blog SOA & BPM Partner Community For regular information on Oracle SOA Suite become a member in the SOA & BPM Partner Community for registration please visit  www.oracle.com/goto/emea/soa (OPN account required) If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix Forum Technorati Tags: SOA Suite,SOA heathcare,soa health,SOA Community,Oracle SOA,Oracle BPM,Community,OPN,Jürgen Kress

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• Is there an alternative to Google Code Search?

  - by blunders

  Per the Official Google Blog: Code Search, which was designed to help people search for open source code all over the web, will be shut down along with the Code Search API on January 15, 2012. Google Code Search is now gone, and since that makes it much harder to understand the features it presented, here's my attempt to render them via information I gathered from a cache of the page for the Search Options: The "In Search Box" just notes the syntax to type the command directly in the main search box instead of using the advance search interface. Package (In Search Box: "package:linux-2.6") Language (In Search Box: "lang:c++") (OPTIONS: any language, actionscript, ada, applescript, asp, assembly, autoconf, automake, awk, basic, bat, c, c#, c++, caja, cobol, coldfusion, configure, css, d, eiffel, erlang, fortran, go, haskell, inform, java, java, javascript, jsp, lex, limbo, lisp, lolcode, lua, m4, makefile, maple, mathematica, matlab, messagecatalog, modula2, modula3, objectivec, ocaml, pascal, perl, php, pod, prolog, proto, python, python, r, rebol, ruby, sas, scheme, scilab, sgml, shell, smalltalk, sml, sql, svg, tcl, tex, texinfo, troff, verilog, vhdl, vim, xslt, xul, yacc) File (In Search Box: "file:^.*.java$") Class (In Search Box: "class:HashMap") Function (In Search Box: "function:toString") License (In Search Box: "license:mozilla") (OPTIONS: null/any-license, aladdin/Aladdin-Public-License, artistic/Artistic-License, apache/Apache-License, apple/Apple-Public-Source-License, bsd/BSD-License, cpl/Common-Public-License, epl/Eclipse-Public-License, agpl/GNU-Affero-General-Public-License, gpl/GNU-General-Public-License, lgpl/GNU-Lesser-General-Public-License, disclaimer/Historical-Permission-Notice-and-Disclaimer, ibm/IBM-Public-License, lucent/Lucent-Public-License, mit/MIT-License, mozilla/Mozilla-Public-License, nasa/NASA-Open-Source-Agreement, python/Python-Software-Foundation-License, qpl/Q-Public-License, sleepycat/Sleepycat-License, zope/Zope-Public-License) Case Sensitive (In Search Box: "case:no") (OPTIONS: yes, no) Also of use in understanding the search tool would be the still live FAQs page for Google Code Search. Is there any code search engine that would fully replace Google Code Search's features?

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• 2D Side Scrolling game and "walk over ground" collision detection

  - by Fire-Dragon-DoL

  The question is not hard, I'm writing a game engine for 2D side scrolling games, however I'm thinking to my 2D side scrolling game and I always come up with the problem of "how should I do collision with the ground". I think I couldn't handle the collision with ground (ground for me is "where the player walk", so something heavily used) in a per-pixel way, and I can't even do it with simple shape comparison (because the ground can be tilted), so what's the correct way? I'know what tiles are and i've read about it, but how much should be big each tile to not appear like a stairs?Are there any other approach? I watched this game and is very nice how he walks on ground: http://www.youtube.com/watch?v=DmSAQwbbig8&feature=player_embedded If there are "platforms" in mid air, how should I handle them?I can walk over them but I can't pass "inside". Imagine a platform in mid air, it allows you to walk over it but limit you because you can't jump in the area she fits Sorry for my english, it's not my native language and this topic has a lot of keywords I don't know so I have to use workarounds Thanks for any answer Additional informations and suggestions: I'm doing a game course in this period and I asked them how to do this, they suggested me this approach (a QuadTree): -All map is divided into "big nodes" -Each bigger node has sub nodes, to find where the player is -You can find player's node with a ray on player position -When you find the node where the player is, you can do collision check through all pixels (which can be 100-200px nothing more) Here is an example, however i didn't show very well the bigger nodes because i'm not very good with photoshop :P How is this approach?

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• How do you use blank lines in your code ?

  - by Matthieu M.

  There has been a few remarks about white space already in discussion about curly braces placements. I myself tend to sprinkle my code with blank lines in an attempt to segregate things that go together in "logical" groups and hopefully make it easier for the next person to come by to read the code I just produced. In fact, I would say I structure my code like I write: I make paragraphs, no longer than a few lines (definitely shorter than 10), and try to make each paragraph self-contained. For example: in a class, I will group methods that go together, while separating them by a blank line from the next group. if I need to write a comment I'll usually put a blank line before the comment in a method, I make one paragraph per step of the process All in all, I rarely have more than 4/5 lines clustered together, meaning a very sparse code. I don't consider all this white space a waste because I actually use it to structure the code (as I use the indentation in fact), and therefore I feel it worth the screen estate it takes. For example: for (int i = 0; i < 10; ++i) { if (i % 3 == 0) continue; array[i] += 2; } I consider than the two statements have clear distinct purposes and thus deserve to be separated to make it obvious. So, how do you actually use (or not) blank lines in code ?

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• Adventures in Scrum: Lesson 2 - For the record

  - by Martin Hinshelwood

  At SSW we have always done Agile. Recently we have started doing Scrum and we have nearly completed our first Sprint ever using Scrum. As you probably guessed from my previous post, it looks like it is going to be a “Failed Sprint”, but the Scrum Team (This includes the ScrumMaster and the Product Owner) has learned a huge amount about working in the Scrum Framework. We have been running with a “Proxy Product Owner” for the last two weeks, but a simple mistake occurred either during the “Product Planning Meeting” or the “Sprint Planning Meeting” that could have prevented this Sprint from failing. We has a heated discussion on the vision of someone not in the room which ended with the assertion that the Product Owner would be quizzed again on their vision. This did not happen and we ran with the “Proxy Product Owner’s vision for two weeks. Product Owner vision: Update Component A of Product A to Silverlight Proxy Product Owner vision: Update Product A to Silverlight Do you see the problem? Worse than that, as we had a lot of junior members of the Scrum Team and we are just feeling our way around how Scrum will work at SSW I missed implementing a fundamental rule. That’s right, it was me. It does not matter that I did not know about this rule, its on the site and I should have read it. Would a police officer let you off if you did not know that a red light meant stop? I think not… But, what is this amazing rule I hear you shout.. Its simple, as per our rule I should have sent the following email: “ Dear Proxy Product Owner, For the record, I disagree that the Product Owner wants us to ‘Update Product A to Silverlight’ as I still think that he wants us to ‘Update Component A of Product A to Silverlight’ and not the entire application. Regards Martin” - ‘For the record’ - Rules to being Software Consultants - Dealing with Clients This email should have been copied to the entire Scrum Team, which would have included the Product Owner, who would have nipped this misunderstanding in the bud and we would have had one less impediment. Technorati Tags: SSW,SSW Rules,SSW Standards,Scrum,Product Owner,ScrumMaster,Sprint,Sprint Planning Meeting,Product Planning Meeting

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