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  • Clean Code Development & Flexible work environment - MSCC 26.10.2013

    Finally, some spare time to summarize my impressions and experiences of the recent meetup of Mauritius Software Craftsmanship Community. I already posted my comment on the event and on our social media networks: Professional - It's getting better with our meetups and I really appreciated that 'seniors' and 'juniors' were present today. Despite running a little bit out of time it was really great to see more students coming to the gathering. This time we changed location for our Saturday meetup and it worked out very well. A big thank you to Ebene Accelerator, namely Mrs Poonum, for the ability to use their meeting rooms for our community get-together. Already some weeks ago I had a very pleasant conversation with her about the MSCC aims, 'mission' and how we organise things. Additionally, I think that an environment like the Ebene Accelerator is a good choice as it acts as an incubator for young developers and start-ups. Reactions from other craftsmen Before I put my thoughts about our recent meeting down, I'd like to mention and cross-link to some of the other craftsmen that were present: "MSCC meet up is a massive knowledge gaining strategies for students, future entrepreneurs, or for geeks all around. Knowledge sharing becomes a fun. For those who have not been able to made it do subscribe on our MSCC meet up group at meetup.com." -- Nitin on Learning is fun with #MSCC #Ebene Accelerator "We then talked about the IT industry in Mauritius, salary issues in various field like system administration, software development etc. We analysed the reasons why people tend to hop from one company to another. That was a fun debate." -- Ish on MSCC meetup - Gang of Geeks "Flexible Learning Environment was quite interesting since these lines struck cords : "You're not a secretary....9 to 5 shouldn't suit you"....This allowed reflection...deep reflection....especially regarding the local mindset...which should be changed in a way which would promote creativity rather than choking it till death..." -- Yannick on 2nd MSCC Monthly Meet-up And others on Facebook... ;-) Visual impressions are available on our Meetup event page. More first time attendees We great pleasure I noticed that we have once again more first time visitors. A quick overlook showed that we had a majority of UoM students in first, second or last year. Some of them are already participating in the UoM Computer Club or are nominated as members of the Microsoft Student Partner (MSP) programme. Personally, I really appreciate the fact that the MSCC is able to gather such a broad audience. And as I wrote initially, the MSCC is technology-agnostic; we want IT people from any segment of this business. Of course, students which are about to delve into the 'real world' of working are highly welcome, and I hope that they might get one or other glimpse of experience or advice from employees. Sticking to the schedule? No, not really... And honestly, it was a good choice to go a little bit of the beaten tracks. I mean, yes we have a 'rough' agenda of topics that we would like to talk about or having a presentation about. But we keep it 'agile'. Due to the high number of new faces, we initiated another quick round of introductions and I gave a really brief overview of the MSCC. Next, we started to reflect on the Clean Code Developer (CCD) - Red Grade which we introduced on the last meetup. Nirvan was the lucky one and he did a good job on summarizing the various abbreviations of the first level of being a CCD. Actually, more interesting, we exchanged experience about the principles and practices of Red Grade, and it was very informative to get to know that Yann actually 'interviewed' a couple of friends, other students, local guys working in IT companies as well as some IT friends from India in order to counter-check on what he learned first-hand about Clean Code. Currently, he is reading the book of Robert C. Martin on that topic and I'm looking forward to his review soon. More output generates more input What seems to be like a personal mantra is working out pretty well for me since the beginning of this year. Being more active on social media networks, writing more article on my blog, starting the Mauritius Software Craftsmanship Community, and contributing more to other online communities has helped me to receive more project requests, job offers and possibilities to expand my business at IOS Indian Ocean Software Ltd. Actually, it is not a coincidence that one of the questions new craftsmen should answer during registration asks about having a personal blog. Whether you are just curious about IT, right in the middle of your Computer Studies, or already working in software development or system administration since a while you should consider to advertise and market yourself online. Easiest way to resolve this are to have online profiles on professional social media networks like LinkedIn, Xing, Twitter, and Google+ (no Facebook should be considered for private only), and considering to have a personal blog. Why? -- Be yourself, be proud of your work, and let other people know that you're passionate about your profession. Trust me, this is going to open up opportunities you might not have dreamt about... Exchanging ideas about having a professional online presence - MSCC meetup on the 26th October 2013 Furthermore, consider to put your Curriculum Vitae online, too. There are quite a number of service providers like 1ClickCV, Stack Overflow Careers 2.0, etc. which give you the ability to have an up to date CV online. At least put it on your site, next to your personal blog. Similar to what you would be able to see on my site here. Cyber Island Mauritius - are we there? A couple of weeks ago I got a 'cold' message on LinkedIn from someone living in the U.S. asking about the circumstances and conditions of the IT world of Mauritius. He has a great business idea, venture capital and is currently looking for a team of software developers (mainly mobile - iOS) for a new startup here in Mauritius. Since then we exchanged quite some details through private messages and Skype conversations, and I suggested that it might be a good chance to join our meetup through a conference call and see for yourself about potential candidates. During approximately 30 to 40 minutes the brief idea of the new startup was presented - very promising state-of-the-art technology aspects and integration of various public APIs -, and we had a good Q&A session about it. Also thanks to the excellent bandwidth provided by the Ebene Accelerator the video conference between three parties went absolutely well. Clean Code Developer - Orange Grade Hahaha - nice one... Being at the Orange Tower at Ebene and then talking about an Orange Grade as CCD. Well, once again I provided an overview of the principles and practices in that rank of Clean Code, and similar to our last meetup we discussed on the various aspect of each principle, whether someone already got in touch with it during studies or work, and how it could affect their future view on their source code. Following are the principles and practices of Clean Code Developer - Orange Grade: CCD Orange Grade - Principles Single Level of Abstraction (SLA) Single Responsibility Principle (SRP) Separation of Concerns (SoC) Source Code conventions CCD Orange Grade - Practices Issue Tracking Automated Integration Tests Reading, Reading, Reading Reviews Especially the part on reading technical books got some extra attention. We quickly gathered our views on that and came up with a result that ranges between Zero (0) and up to Fifteen (15) book titles per year. Personally, I'm keeping my progress between Six (6) and Eight (8) titles per year, but at least One (1) per quarter of a year. Which is also connected to the fact that I'm participating in the O'Reilly Reader Review Program and have a another benefit to get access to free books only by writing and publishing a review afterwards. We also had a good exchange on the extended topic of 'Reviews' - which to my opinion is abnormal difficult here in Mauritius for various reasons. As far as I can tell from my experience working with Mauritian software developers, either as colleagues, employees or during consulting services there are unfortunately two dominant pattern on that topic: Keeping quiet Running away Honestly, I have no evidence about why these are the two 'solutions' on reviews but that's the situation that I had to face over the last couple of years. Sitting together and talking about problematic issues, tackling down root causes of de-motivational activities and working on general improvements doesn't seem to have a ground within the IT world of Mauritius. Are you a typist or a creative software craftsman? - MSCC meetup on the 26th October 2013 One very good example that we talked about was the fact of 'job hoppers' as you can easily observe it on someone's CV - those people change job every single year; for no obvious reason! Frankly speaking, I wouldn't even consider an IT person like to for an interview. As a company you're investing money and effort into the abilities of your employees. Hiring someone that won't stay for a longer period is out of question. And sorry to say, these kind of IT guys smell fishy about their capabilities and more likely to cause problems than actually produce productive results. One of the reasons why there is a probation period on an employment contract is to give you the liberty to leave as early as possible in case that you don't like your new position. Don't fool yourself or waste other people's time and money by hanging around a full year only to snatch off the bonus payment... Future outlook: Developer's Conference Even though it is not official yet I already mentioned it several times during our weekly Code & Coffee sessions. The MSCC is looking forward to be able to organise or to contribute to an upcoming IT event. Currently, the rough schedule is set for April 2014 but this mainly depends on availability of location(s), a decent time frame for preparations, and the underlying procedures with public bodies to have it approved and so on. As soon as the information about date and location has been fixed there will be a 'Call for Papers' period in order to attract local IT enthusiasts to apply for a session slot and talk about their field of work and their passion in IT. More to come for sure... My resume of the day It was a great gathering and I am very pleased about the fact that we had another 15 craftsmen (plus 2 businessmen on conference call plus 2 young apprentices) in the same room, talking about IT related topics and sharing their experience as employees and students. Personally, I really appreciated the feedback from the students about their current view on their future career, and I really hope that some of them are going to pursue their dreams. Start promoting yourself and it will happen... Looking forward to your blogs! And last but not least our numbers on Meetup and Facebook have been increased as a direct consequence of this meetup. Please, spread the word about the MSCC and get your friends and colleagues to join our official site. The higher the number of craftsmen we have the better chances we have t achieve something great! Thanks!

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  • Should I stay in my degree or take an opportunity for management experience?

    - by Adam
    I've read a couple other post along these lines and they've been helpful but I'm wondering if my case is any different. I've been working towards my CS degree while working part time in a programming job. I'm now about two years away from getting my degree and was just offered a management position at my job. This would mean that I have to work full-time at my job and I can't really work towards my degree anymore in person. My school doesn't really offer CS classes after hours nor online. It seems that getting a degree is very important from the other post that I read. Does having management experience trump that? I'm currently leaning towards taking the job and finding some sort of online degree. Also my school only offers a business degree online, could I just get this in place. Does the type of degree really matter? For some jobs it's not the type of degree just that you have one, is there any merit for this in the programming industry? Thanks :)

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  • December 2012 OTN Member Offers

    - by Cassandra Clark - OTN
    Our partners have answered the special offer call just in time for you to either shop for the tech professional in your life or share the list below with someone who keeps asking you what you want for the holidays.  Go right to the Oracle Technology Network Member Discount Page or read on for more details. Oracle  Store has extended their 10% Savings through December 31st 2012.Oracle Press - Oracle Technology Network members get 40% off the latest Oracle Press book by Oracle ACE Directors Ben Prusinski and Gustavo Gonzalez, Oracle E-Business Suite Financials Handbook, Third Edition in print and ebook format. CRC Press - Has added 3 NEW titles!  Get 20% off the below title at checkout. Secure Java: For Web Application Development Open Source Data Warehousing and Business Intelligence Developing Essbase Applications: Advanced Techniques for Finance and IT Professional Oracle Embedded Programming and Application Development Packt Publishing - Get 25% off the print books and get 35% off the eBooks listed below. You will need to be logged in for the discounts to apply at checkout and codes expire December 31st 2012. Getting Started with Oracle Data Integrator 11g: A Hands-On Tutorial Oracle Business Intelligence Enterprise Edition 11g: A Hands-On Tutorial Oracle Certified Associate, Java SE 7 Programmer Study Guide Safari Online-  Give the Gift of Knowledge This Holiday SeasonGive your friends and colleagues the gift of Safari Books Online! With an ever-expanding library of books and videos from more than 100 publishers (including Oracle Press), a subscription to Safari Books Online is the gift that always fits, helping your friends learn new skills and stay current. Starting at $42.99, gift subscriptions are available for 1, 3, 6 and 12 months. Get all of this and more at the Oracle Technology Network Member Discount Page!

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  • Open Source Project all dressed up but nowhere to go...

    - by Calanus
    Over the past 2 years myself and a colleague have built an online statistical analysis application using a mixture of silverlight, wcf and R. I (a c# programmer) wrote all the silverlight and wcf stuff whilst my colleague (a statistician) came up with the stats algorithms and wrote the R code. Now we think that this app is fairly unique - a rich gui online statistics application that is much more intuitive than all the other online stat apps that I've seen. But despite this we don't really know where to go with the project, mainly for the following reasons: 1) Its fairly complicated stuff - without the mix of programing and stats skills it would be difficult for anyone to "get into" the project and contribute. 2) We are stalled by a lack of a proper place to host the site. Currently it sits on the family windows 7 media centre, not exactly the best place to host it as it could interfere with the missus trying to watch Corrie/Friends/Oprah etc. Soo, anyone got any ideas on how to move forward with this? I guess that my strength is programing not marketing so despite working hard at this for the past couple of years I feel that I've reached a dead end! Also, does anyone know of any free windows hosting for open source projects? If I could find a proper place to put the app I might feel re-energised about the whole thing. The source code is on codeplex at: http://silverstats.codeplex.com, whilst the app is currently hosted at http://silverstats.co.uk

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  • juicy couture handbag 2012 has a complete abrogating

    - by user109129
    Washington admissionory approximate animosity Law "will use the activityable angleableware, or added activityable IT bargains of online writing afirely accurate as activityable acts, regardbelow of the activityable IT is acclimated in the achieve of the artecompleteity or business, this law applies. This new law, including IT companies, accomplisheditects, companies,juicy couture handbag online or the admissionory apostle acclimatized can sue for activityable IT and its online writing in Washington admissionory adjustment companies in the breadth of approximate animosity. In November 2011, the topest magistrates of the admissionory governments, the 39 apostle acclimatized ambrosial a aggregate letter to Juicy Couture accoutrements the Federal adjustment bureau, beforehand federal agencies to crop a boxlikeer bases to corruption those who use activityable IT companies for approximate animosity in the final appraisement, it is out of bread-and-adulate interests. The use of activityable IT has alively afflicted the directness of animosity in industries outadmissionory the IT industry, and ultimately affect the able bread-and-adulate acreage. In this backbreaking bread-and-adulate times, American companies are all adverse presconstant to completeize accoutrement opportaccessionies for the administrateing of the admissionory governments to beappear added acerbic in acclimatizement to enconstant fair animosity a allotment of admissionpdispatchs. The abrogating appulse of the use of activityable IT and activity is not apprenticed to the associated admissionorys, it is not apprenticed to bookish Juicy Couture acreage owners. The bread-and-adulate aggregate is asable a affliction for the Chinese abbreviation. juicy couture handbag 2012 has a complete abrogating bread-and-adulate appulse of the Chinese accomplisheditects to ascribe in fair animosity and acadding for bookish acreage activity consulting abutting anterior activity, afresh appear a assay abode, IT piracy affliction to an ceremony draft of honest accomplisheditects $ 837 amateur, ie draft of $ 4.18 billion in the angleableware specific to the five-year activity aeon. The aadvancedmentioned time, the proactivityration of the use of activityable and pirated angleableware admission asable hindered the aapprenticedth of IT and angleableware industry to allay the achievement of a blossomy bookish acreage arabuttalsments admission a abrogating appulse on the admissionion ambiance.

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  • What individual needs to be aware when signing a NDA with client?

    - by doNotCheckMyBlog
    I am very new to IT industry and have no prior experience. However I came into contact with a party who is gear to build a mobile application. But, they want me to sign NDA (No Disclosure Agreement). The definition seems vague, The following definitions apply in this Agreement: Confidential Information means information relating to the online and mobile application concepts discussed and that: (a) is disclosed to the Recipient by or on behalf of XYZ; (b) is acquired by the Recipient directly or indirectly from XYZ; (c) is generated by the Recipient (whether alone or with others); or (d) otherwise comes to the knowledge of the Recipient, When they say otherwise comes to the knowledge of the recipient. Does it mean if I think of any idea from my own creative mind and which is similar to their idea then it would be a breach of this agreement? and also is it okay to tell to include application name in definition as currently to me it sounds like any online of mobile application concept they think I should not disclose it to anybody. "Confidential Information means information relating to the online and mobile application concepts discussed and that:" I am more concerned about this part, Without limiting XYZ’s rights at law, the Recipient agrees to indemnify XYZ in respect of all claims, losses, liabilities, costs or expenses of any kind incurred directly or indirectly as a result of or in connection with a breach by it or any of its officers, employees, or consultants of this Agreement. Is it really common in IT industry to sign this agreement between client and developer? Any particular thing I should be concerned about?

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  • Today's Well Connected Companies

    - by Michael Snow
    Statoil Fuel & Retail and their partner, L&T Infotech, our recent winner of the Oracle Excellence Award for Fusion Middleware Innovation in the WebCenter category is featured this month in Profit Magazine's November Issues of both print and online versions. The online version has significantly more detail about their "Connect" project Statoil Fuel & Retail is a leading Scandinavian road transport fuel retailer that operates in 8 different countries and delivers aviation fuel at 85 airports. The company produces and sells 750 different lubricant products for B2B and B2C customers. Statoil won the 2013 Oracle Excellence Award for Oracle Fusion Middleware Innovation: Oracle WebCenter based on a stellar Oracle implementation, created with implementation partner L&T Infotech, which used Oracle’s JD Edwards and Oracle Fusion Middleware to replace and consolidate 10 SAP portals into a single, integrated, personalized enterprise portal for partners, station managers, and support staff. Utilizing Oracle WebCenter Portal, Oracle WebCenter Content, Oracle Identity Management, Oracle SOA Suite, JD Edwards applications, and Oracle CRM On Demand, Statoil is now able to offer a completely redesigned portal for an easy and user-friendly web experience, delivering a fast, secure, robust, and scalable solution that will help the company remain competitive in its industry. The solution has increased Statoil Fuel & Retail’s web footprint and expanded its online business. Read the complete article for the full story of Statoil Fuel & Retail's implementation of Oracle Fusion Middleware technology.

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  • Continuous Retraining Tutorials

    - by foampile
    I am looking for an online resource in which you can sortof design your future professional profile and it would provide you a set of tutorials that you would complete to get a basic level of familiarity with related technologies. One of my professional problems is my learning style: I can learn either by direct hands-on experience OR by following a rigid training program that goes in a linear progression. I have a hard time learning things in a multidimensional environment where the biggest challenge is to determine what needs to be learned and how to pick from a ton of books and the least problem is to go through the actual material. So I am looking for a reputable source that will knock those two confusing questions out for me so I can kick back and continuously be upgrading my skills without having to worry about what and how myself. I have found some decent online tutorials for various technologies but never found a single place that has all or most developer education tutorials that all follow the same or similar interface. I am kindof a lazy learner and would rather follow confirmed learning steps than be figuring my own education path just to realize I did it all wrong down the road. Is there a tutorial mega-boutique like that online?

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  • help me being the next zuckerberg [closed]

    - by Kraken
    I really expect someone to help me with my problem as stated below. I started learning website making by having tutorials from w3schools.com but after doing taking the HTML tutorials I don't think I really can do anything with it. Maybe I don't know everything about HTML yet. I know the online tutorials are not enough but what I need you guys to tell me is that how can I learn making some nice websites. I have vacations for two months now and I think it would be the best time for me to learn making websites as I really love to be a website developer. Now I would like to start from the scratch. I know some C language (though I know it will not help me). So tell me from where shall I learn HTML and what all things shall I learn after that and in what order. If you can also help me with the material (let it be books or online tutorials). But I would like to know how can I gain confidence that I can make some websites as just learning online tutorials doesn't help me much. I also tried some video tutorials but in that too, they will just tell me some of the functions and not all. So what am I supposed to do.. just know a limited functions as they want me to know in video tutorials or do something else.

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  • GlassFish/Java EE Community Open Forum Tomorrow!

    - by reza_rahman
    Still have lingering questions on the goals and future of GlassFish? Want to know a little more about the upcoming GlassFish 4.0.1 release? Something on your mind about Java EE 8/GlassFish 5? You have a golden opportunity to pose your questions and speak your mind tomorrow! The good folks over at C2B2 have gone through a lot of time and effort to organize a very useful online event for the London GlassFish User Group - they are having me answer all your questions online, in real time, "face-to-face". Steve Millidge of C2B2 will be moderating the questions and joining the conversation. Did I mention the event was online, free and open to anyone? The event is tomorrow (May 30th), so make sure to register as soon as possible through the C2B2 website (the registration page has more details on the event). It will be held at 4:30 PM BST / 11:30 AM EST / 8:30 AM PST - you must register to participate. Hope to talk to you tomorrow?

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  • Oracle Database 12c ????????(?????)

    - by OTN-J Master
    Oracle Database 12c????????????? ?????????????????????????????????????¦ ??????????????? ????????? Oracle Database 12c????OTN??? Oracle Database 12c???? ¦ Oracle Database 12c???????????????? Oracle Database 12c ?????? (PDF)¦ Oracle Database 12c???????????? ??????????????? Oracle Database 12c (??????????????) "Oracle Database 12c???"??????????????????? ??????NEC???????????????? ???????????????????????¦ Oracle Database 12c??????????????????? ???????????Oracle Database 12c ????? (PC/????????????!) ????????????????????????????? ?????????????????! Oracle Database 12c???????? (@IT /Database Expert) ??????Oracle Database 12c????????·?????????????????? (EnterpriseZine/DB Online) ??????????!Oracle Database 12c???? (EnterpriseZine/DB Online) ¦ Oracle Database 12c?????????????????????? ??????????Oracle Database 12c ?????!  (EnterpriseZine/DB Online) ¦ Oracle Database 12c???????????? ????????? OTN???????????????????????????????????????????? ?????????/??????? ~????????????????12c??????????!~ Oracle Database 12c????????!???????????? ¦ Oracle Database 12c??????????????????? Oracle University?? Oracle Database 12c: ?????? ¦ Oracle Database 12c?????????????????????????? ?????????????????? ¦ Oracle Database 12c????????????????? ?????????????????????????????????????????(??)???????????????????????????OTN Community(??????)?????????OTN Community??? ¦ Oracle Database 12c???????????????? 12c????????????????????????OTN????????????????Twitter(@oracletechnetjp)???????????????????????! ????????????????????????????Oracle Database 12c???????????????(?8???????????&??????????)????????

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  • Download PowerCommands for VS 2008

    - by Editor
    PowerCommands is a set of useful extensions for the Visual Studio 2008 adding additional functionality to various areas of the IDE. The source code is included and requires the VS SDK for VS 2008 to allow modification of functionality or as a reference to create additional custom PowerCommand extensions. Visit the [...]

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  • Download PowerCommands for VS 2008

    - by Editor
    PowerCommands for Visual Studio 2008 is now available for free download, along with source code and a readme document. PowerCommands, is a set of useful extensions for the Visual Studio 2008 adding additional functionality to various areas of the IDE. The source code, which requires the VS SDK for VS 2008 [...]

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  • Try a sample: Using the counter predicate for event sampling

    - by extended_events
    Extended Events offers a rich filtering mechanism, called predicates, that allows you to reduce the number of events you collect by specifying criteria that will be applied during event collection. (You can find more information about predicates in Using SQL Server 2008 Extended Events (by Jonathan Kehayias)) By evaluating predicates early in the event firing sequence we can reduce the performance impact of collecting events by stopping event collection when the criteria are not met. You can specify predicates on both event fields and on a special object called a predicate source. Predicate sources are similar to action in that they typically are related to some type of global information available from the server. You will find that many of the actions available in Extended Events have equivalent predicate sources, but actions and predicates sources are not the same thing. Applying predicates, whether on a field or predicate source, is very similar to what you are used to in T-SQL in terms of how they work; you pick some field/source and compare it to a value, for example, session_id = 52. There is one predicate source that merits special attention though, not just for its special use, but for how the order of predicate evaluation impacts the behavior you see. I’m referring to the counter predicate source. The counter predicate source gives you a way to sample a subset of events that otherwise meet the criteria of the predicate; for example you could collect every other event, or only every tenth event. Simple CountingThe counter predicate source works by creating an in memory counter that increments every time the predicate statement is evaluated. Here is a simple example with my favorite event, sql_statement_completed, that only collects the second statement that is run. (OK, that’s not much of a sample, but this is for demonstration purposes. Here is the session definition: CREATE EVENT SESSION counter_test ON SERVERADD EVENT sqlserver.sql_statement_completed    (ACTION (sqlserver.sql_text)    WHERE package0.counter = 2)ADD TARGET package0.ring_bufferWITH (MAX_DISPATCH_LATENCY = 1 SECONDS) You can find general information about the session DDL syntax in BOL and from Pedro’s post Introduction to Extended Events. The important part here is the WHERE statement that defines that I only what the event where package0.count = 2; in other words, only the second instance of the event. Notice that I need to provide the package name along with the predicate source. You don’t need to provide the package name if you’re using event fields, only for predicate sources. Let’s say I run the following test queries: -- Run three statements to test the sessionSELECT 'This is the first statement'GOSELECT 'This is the second statement'GOSELECT 'This is the third statement';GO Once you return the event data from the ring buffer and parse the XML (see my earlier post on reading event data) you should see something like this: event_name sql_text sql_statement_completed SELECT ‘This is the second statement’ You can see that only the second statement from the test was actually collected. (Feel free to try this yourself. Check out what happens if you remove the WHERE statement from your session. Go ahead, I’ll wait.) Percentage Sampling OK, so that wasn’t particularly interesting, but you can probably see that this could be interesting, for example, lets say I need a 25% sample of the statements executed on my server for some type of QA analysis, that might be more interesting than just the second statement. All comparisons of predicates are handled using an object called a predicate comparator; the simple comparisons such as equals, greater than, etc. are mapped to the common mathematical symbols you know and love (eg. = and >), but to do the less common comparisons you will need to use the predicate comparators directly. You would probably look to the MOD operation to do this type sampling; we would too, but we don’t call it MOD, we call it divides_by_uint64. This comparator evaluates whether one number is divisible by another with no remainder. The general syntax for using a predicate comparator is pred_comp(field, value), field is always first and value is always second. So lets take a look at how the session changes to answer our new question of 25% sampling: CREATE EVENT SESSION counter_test_25 ON SERVERADD EVENT sqlserver.sql_statement_completed    (ACTION (sqlserver.sql_text)    WHERE package0.divides_by_uint64(package0.counter,4))ADD TARGET package0.ring_bufferWITH (MAX_DISPATCH_LATENCY = 1 SECONDS)GO Here I’ve replaced the simple equivalency check with the divides_by_uint64 comparator to check if the counter is evenly divisible by 4, which gives us back every fourth record. I’ll leave it as an exercise for the reader to test this session. Why order matters I indicated at the start of this post that order matters when it comes to the counter predicate – it does. Like most other predicate systems, Extended Events evaluates the predicate statement from left to right; as soon as the predicate statement is proven false we abandon evaluation of the remainder of the statement. The counter predicate source is only incremented when it is evaluated so whether or not the counter is incremented will depend on where it is in the predicate statement and whether a previous criteria made the predicate false or not. Here is a generic example: Pred1: (WHERE statement_1 AND package0.counter = 2)Pred2: (WHERE package0.counter = 2 AND statement_1) Let’s say I cause a number of events as follows and examine what happens to the counter predicate source. Iteration Statement Pred1 Counter Pred2 Counter A Not statement_1 0 1 B statement_1 1 2 C Not statement_1 1 3 D statement_1 2 4 As you can see, in the case of Pred1, statement_1 is evaluated first, when it fails (A & C) predicate evaluation is stopped and the counter is not incremented. With Pred2 the counter is evaluated first, so it is incremented on every iteration of the event and the remaining parts of the predicate are then evaluated. In this example, Pred1 would return an event for D while Pred2 would return an event for B. But wait, there is an interesting side-effect here; consider Pred2 if I had run my statements in the following order: Not statement_1 Not statement_1 statement_1 statement_1 In this case I would never get an event back from the system because the point at which counter=2, the rest of the predicate evaluates as false so the event is not returned. If you’re using the counter target for sampling and you’re not getting the expected events, or any events, check the order of the predicate criteria. As a general rule I’d suggest that the counter criteria should be the last element of your predicate statement since that will assure that your sampling rate will apply to the set of event records defined by the rest of your predicate. Aside: I’m interested in hearing about uses for putting the counter predicate criteria earlier in the predicate statement. If you have one, post it in a comment to share with the class. - Mike Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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  • Given an XML which contains a representation of a graph, how to apply it DFS algorithm? [on hold]

    - by winston smith
    Given the followin XML which is a directed graph: <?xml version="1.0" encoding="iso-8859-1" ?> <!DOCTYPE graph PUBLIC "-//FC//DTD red//EN" "../dtd/graph.dtd"> <graph direct="1"> <vertex label="V0"/> <vertex label="V1"/> <vertex label="V2"/> <vertex label="V3"/> <vertex label="V4"/> <vertex label="V5"/> <edge source="V0" target="V1" weight="1"/> <edge source="V0" target="V4" weight="1"/> <edge source="V5" target="V2" weight="1"/> <edge source="V5" target="V4" weight="1"/> <edge source="V1" target="V2" weight="1"/> <edge source="V1" target="V3" weight="1"/> <edge source="V1" target="V4" weight="1"/> <edge source="V2" target="V3" weight="1"/> </graph> With this classes i parsed the graph and give it an adjacency list representation: import java.io.IOException; import java.util.HashSet; import java.util.LinkedList; import java.util.Collection; import java.util.Iterator; import java.util.logging.Level; import java.util.logging.Logger; import practica3.util.Disc; public class ParsingXML { public static void main(String[] args) { try { // TODO code application logic here Collection<Vertex> sources = new HashSet<Vertex>(); LinkedList<String> lines = Disc.readFile("xml/directed.xml"); for (String lin : lines) { int i = Disc.find(lin, "source=\""); String data = ""; if (i > 0 && i < lin.length()) { while (lin.charAt(i + 1) != '"') { data += lin.charAt(i + 1); i++; } Vertex v = new Vertex(); v.setName(data); v.setAdy(new HashSet<Vertex>()); sources.add(v); } } Iterator it = sources.iterator(); while (it.hasNext()) { Vertex ver = (Vertex) it.next(); Collection<Vertex> adyacencias = ver.getAdy(); LinkedList<String> ls = Disc.readFile("xml/graphs.xml"); for (String lin : ls) { int i = Disc.find(lin, "target=\""); String data = ""; if (lin.contains("source=\""+ver.getName())) { Vertex v = new Vertex(); if (i > 0 && i < lin.length()) { while (lin.charAt(i + 1) != '"') { data += lin.charAt(i + 1); i++; } v.setName(data); } i = Disc.find(lin, "weight=\""); data = ""; if (i > 0 && i < lin.length()) { while (lin.charAt(i + 1) != '"') { data += lin.charAt(i + 1); i++; } v.setWeight(Integer.parseInt(data)); } if (v.getName() != null) { adyacencias.add(v); } } } } for (Vertex vert : sources) { System.out.println(vert); System.out.println("adyacencias: " + vert.getAdy()); } } catch (IOException ex) { Logger.getLogger(ParsingXML.class.getName()).log(Level.SEVERE, null, ex); } } } This is another class: import java.util.Collection; import java.util.Objects; public class Vertex { private String name; private int weight; private Collection ady; public Collection getAdy() { return ady; } public void setAdy(Collection adyacencias) { this.ady = adyacencias; } public String getName() { return name; } public void setName(String nombre) { this.name = nombre; } public int getWeight() { return weight; } public void setWeight(int weight) { this.weight = weight; } @Override public int hashCode() { int hash = 7; hash = 43 * hash + Objects.hashCode(this.name); hash = 43 * hash + this.weight; return hash; } @Override public boolean equals(Object obj) { if (obj == null) { return false; } if (getClass() != obj.getClass()) { return false; } final Vertex other = (Vertex) obj; if (!Objects.equals(this.name, other.name)) { return false; } if (this.weight != other.weight) { return false; } return true; } @Override public String toString() { return "Vertice{" + "name=" + name + ", weight=" + weight + '}'; } } And finally: /** * * @author user */ /* -*-jde-*- */ /* <Disc.java> Contains the main argument*/ import java.io.*; import java.util.LinkedList; /** * Lectura y escritura de archivos en listas de cadenas * Ideal para el uso de las clases para gráficas. * * @author Peralta Santa Anna Victor Miguel * @since Julio 2011 */ public class Disc { /** * Metodo para lectura de un archivo * * @param fileName archivo que se va a leer * @return El archivo en representacion de lista de cadenas */ public static LinkedList<String> readFile(String fileName) throws IOException { BufferedReader file = new BufferedReader(new FileReader(fileName)); LinkedList<String> textlist = new LinkedList<String>(); while (file.ready()) { textlist.add(file.readLine().trim()); } file.close(); /* for(String linea:textlist){ if(linea.contains("source")){ //String generado = linea.replaceAll("<\\w+\\s+\"", ""); //System.out.println(generado); } }*/ return textlist; }//readFile public static int find(String linea,String palabra){ int i,j; boolean found = false; for(i=0,j=0;i<linea.length();i++){ if(linea.charAt(i)==palabra.charAt(j)){ j++; if(j==palabra.length()){ found = true; return i; } }else{ continue; } } if(!found){ i= -1; } return i; } /** * Metodo para la escritura de un archivo * * @param fileName archivo que se va a escribir * @param tofile la lista de cadenas que quedaran en el archivo * @param append el bit que dira si se anexa el contenido o se empieza de cero */ public static void writeFile(String fileName, LinkedList<String> tofile, boolean append) throws IOException { FileWriter file = new FileWriter(fileName, append); for (int i = 0; i < tofile.size(); i++) { file.write(tofile.get(i) + "\n"); } file.close(); }//writeFile /** * Metodo para escritura de un archivo * @param msg archivo que se va a escribir * @param tofile la cadena que quedaran en el archivo * @param append el bit que dira si se anexa el contenido o se empieza de cero */ public static void writeFile(String msg, String tofile, boolean append) throws IOException { FileWriter file = new FileWriter(msg, append); file.write(tofile); file.close(); }//writeFile }// I'm stuck on what can be the best way to given an adjacency list representation of the graph how to apply it Depth-first search algorithm. Any idea of how to aproach to complete the task?

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  • Download NServiceBus Framework

    - by Editor
    NServiceBus is a highly extensible, publish/subscribe, workflow integrated communications framework for .NET. NServiceBus is a lightweight higher-level API built on top of MSMQ and based on one-way messaging. For now the Technological Implementation is based on MSMQ, though other implementations are considered. Download NServiceBus.

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  • Download Mp3Sharp to decode MP3s

    - by Editor
    Mp3Sharp decodes MP3 files natively in .NET using a managed application written in C#. Mp3Sharp is a C# port of JavaLayer, an MP3 decoder for Java written by the JavaZoom team. Tested with a variety of MP3s. Download Mp3Sharp.

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  • Download NPlot .NET charting library

    - by Editor
    NPlot is a .NET charting library for .NET. And, it is available as freeware. NPlot features an useful and flexible API. Also, NPlot includes controls for ASP.NET and Windows Forms, as well as a class for creating Bitmaps. Learn from a few examples. Download NPlot.

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  • Download ASP.NET MVC Source Code

    - by Editor
    From Scott Guthrie’s blog: Last month I blogged about our ASP.NET MVC Roadmap. Two weeks ago we shipped the ASP.NET Preview 2 Release. Phil Haack from the ASP.NET team published a good blog post about the release here. Scott Hanselman has created a bunch of great ASP.NET MVC tutorial videos [...]

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  • EntitySpaces 2008 Alpha Released

    - by Editor
    From the EntitySpaces Team: EntitySpaces 2008 Persistence Layer and Business Objects for Microsoft .NET We are very excited to offer this Alpha release for those who want to get a head start with EntitySpaces 2008 (ES2008). This Alpha release supports only C# class generation from within CodeSmith, and only supports Microsoft SqlServer. A subsequent [...]

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  • Download Irony .NET Compiler Construction Kit

    - by Editor
    Irony is a new-generation .NET compiler construction kit. It utilizes the full potential of c# 2.0 and .NET Framework to implement a completely new and streamlined technology of compiler construction. Unlike most existing yacc/lex-style solutions Irony does not employ any scanner or parser code generation from grammar specifications written in a specialized [...]

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  • Windows Vista Controls for .NET 2.0

    - by Editor
    Windows Vista Controls for .NET 2.0 is a project started by Marco Minerva on January 30th, 2007. This project aims to create a Windows Control Library that provides controls reproducing the appearance of Windows Vista objects, like buttons and links with shield icon, textboxes with cue banners, etc. System requirements Visual C# 2008 Express [...]

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  • Read SQL Server Reporting Services Overview

    - by Editor
    Read an excellent, 14-page, general overview of Microsoft SQL Server 2008 Reporting Services entitled White Paper: Reporting Services in SQL Server 2008. Download the White Paper. (360 KB Microsoft Word file) White Paper: Reporting Services in SQL Server 2008 Microsoft SQL Server 2008 Reporting Services provides a complete server-based platform that is designed to support a wide variety [...]

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  • Download LINQPad to learn LINQ

    - by Editor
    LINQPad lets you interactively query SQL databases in a modern query language: LINQ. Say goodbye to SQL Management Studio.LINQPad supports everything in C# 3.0 and Framework 3.5: LINQ to SQL LINQ to Objects LINQ to XML LINQPad is also a great way to learn LINQ: it comes preloaded with 200 examples from the book, C# [...]

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  • Download NDepend Analysis Tool

    - by Editor
    NDepend is a tool that simplifies managing a complex .NET code base. Architects and developers can analyze code structure, specify design rules, plan massive refactoring, do effective code reviews and master evolution by comparing different versions of the code. The result is better communication, improved quality, easier maintenance and faster development. NDepend supports the Code Query Language [...]

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