Acquires, purchases, whatever... they paid for it and they will have it. Sun will have MySql. Does that mean that they want to go towards easily usable SQL servers or that they want to compete with Oracle? PostgreSQL would have been a more appropriate choice in that case. Will MySql for Java be like SQL server is for .NET ? Anyway, 1 billion dollars is selling short, I think. Youtube was two. Is a media distribution software more important than a database server?

Here is the official announcement.

Small quote: MySQL's open source database is the "M" in LAMP - the software platform comprised of Linux, Apache, MySQL and PHP/Perl often viewed as the foundation of the Internet. Sun is committed to enhancing and optimizing the LAMP stack on GNU/Linux and Microsoft Windows along with OpenSolaris and MAC OS X. The database from MySQL, OpenSolaris and GlassFish, together with Sun's Java platform and NetBeans communities, will create a powerful Web application platform across a wide range of customers shifting their applications to the Web.

I am going to quickly describe what happened in the briefing, then link to the site where all the presentation materials can be found (if I ever find it :))

The whole thing was supposed to happen at the Grand RIN hotel, but apparently the people there changed their minds suddenly leaving the briefing without a set location. In the end the brief took place at the Marriott Hotel and the MSDN people were nice enough to phone me and let me know of the change.

The conference lasted for 9 hours, with coffee and lunch breaks, and also half an hour for signing in and another 30 minutes for introduction bullshit. You know the drill if you ever went to one of such events: you sit in a chair waiting for the event to start while you are SPAMMED with video presentations of Microsoft products, then some guy comes in saying hello, presenting the people that will do the talking, then each of the people that do the talking present themselves, maybe even thank the presenter at the beginning... like a circular reference! Luckily I brought my trusted ear plugs and PDA, loaded with sci-fi and tech files.

The actual talk began at 10:00, with Petru Jucovschi presenting as well as holding the first talk, about Linq and C# 3.0. He has recently taken over from Zoltan Herczeg and he has not yet gained the necessary confidence to keep crouds interested. Luckily, the information and code were reasonably well structured and, even if I've heard them before, held me watching the whole thing.

Linq highlights:

• is new in .NET 3.0+ and it takes advantage of a lot of the other newly introduced features like anonymous types and methods, lambda expressions, expression trees, extension methods, object initializers and many others.
• it works over any object defined as IQueryable<T> or IEnumerable (although this last thing is a bit of a compromise).
• simplifies our way of working with queries, bring them closer to the .NET programming languages and from the just-in-time errors into the domain of compiler errors.
• "out of the box" it comes with support for T-Sql, Xml, Objects and Datasets, but providers can be built (easily) for anything imaginable.
• the linq queries are actually execution trees that are only run when GetEnumerator is called. This is called "deffered execution" and it means more queries can be linked and optimised before the data is actually required.
• in case you want the data for caching purposes, there are ToList and ToArray methods available

Then there were two back-to-back sessions from my favourite speaker, Ciprian Jichici, about Linq over SQL and Linq over Entities. He was slightly tired and in a hurry to catch the plain for his native lands of Timisoara, VB, but he held it through, even if he had to talk for 2.5 hours straight. He went through the manual motions of creating mappings between Linq to SQL objects and actualy database data; it wouldn't compile, but the principles were throughly explained and I have all the respect for the fact that he didn't just drag and drop everything and not explain what happened in the background.

Linq to SQL highlights:

• Linq to SQL does not replace SQL and SQL programming
• Linq to SQL supports only T-SQL 2005 and 2008 for now, but Linq providers from the other DB manufacturers are sure to come.
• Linq queries are being translated, wherever possible, to the SQL server and executed there.
• queries support filtering, grouping, ordering, and C# functions. One of the query was done with StartsWith. I don't know if that translated into SQL2005 CLR code or into a LIKE and I don't know exactly what happends with custom methods
• using simple decoration, mapping between SQL tables and C# objects can be done very easily
• Visual Studio has GUI tools to accomplish the mapping for you
• Linq to SQL can make good use of automatic properties and object initialisers and collection initialisers
• an interesting feature is the ability to tell Linq which of the "child" objects to load with a parent object. You can read a Person object and load all its phone numbers and email addresses, but not the purchases made in that name

Linq to Entities highlights:

• it does not ship with the .NET framework, but separately, probably a release version will be unveiled in the second half of this year
• it uses three XML files to map source to destination: conceptual, mapping and database. The conceptual file will hold a schema of local object, the database file will hold a schema of source objects and the mapping will describe their relationship.
• One of my questions was if I can use Linq to Entities to make a data adapter from an already existing data layer to another, using it to redesign data layer architecture. The answer was yes. I find this very interesting indeed.
• of course, GUI tools will help you do that with drag and drop operations and so on and so on
• the three level mapping allows you to create objects from more linked tables, making the internal workings of the database engine and even some of its structure irrelevant
• I do not know if you can create an object from two different sources, like SQL and an XML file
• for the moment Linq to SQL and Linq to Entities are built by different teams and they may have different approaches to similar problems

Then it was lunch time. For a classy (read expensive like crap) hotel, the service was really badly organised. The food was there, but you had to stay in long queues qith a plate in your hand to get some food, then quickly hunt for empty tables, the type you stand in front of to eat. The food was good though, although not exceptional.

Aurelian Popa was the third speaker, talking about Silverlight. Now, it may be something personal, but he brought in my mind the image of Tom Cruise, arrogant, hyperactive, a bit petty. I was half expecting him to say "show me the money!" all the time. He insisted on telling us about the great mathematician Comway who, by a silly mistake, created Conway's Life Game. If he could only spell his name right, tsk, tsk, tsk.

Anyway, technically this presentation was the most interesting to me, since it showed concepts I was not familiar with. Apparently Silverlight 1.0 is Javascript based, but Silverlight 2.0, which will be released by the half of this year, I guess, uses .NET! You can finally program the web with C#. The speed and code protection advantages are great. Silverlight 2.0 maintains the ability to manipulate Html DOM objects and let Javascript manipulate its elements.

Silverlight 2.0 highlights:

• Silverlight 2.0 comes with its own .NET compact version, independent on .NET versions on the system or even on operating system
• it is designed with compatibility in mind, cross-browser and cross-platform. One will be able to use it in Safari on Linux
• the programming can be both declarative (using XAML) and object oriented (programatic access with C# or VB)
• I asked if it was possible to manipulate the html DOM of the page and, being written in .NET, work significantly faster than the same operations in pure Javascript. The answer was yes, but since Silverlight is designed to be cross-browser, I doubt it is the whole answer. I wouldn't put it past Microsoft to make some performance optimizations for IE, though.
• Silverlight 2.0 has extra abilities: CLR, DLR (for Ruby and other dynamic languages), suport for RSS, SOAP, WCF, WPF, Generics, Ajax, all the buzzwords are there, including DRM (ugh!)

The fourth presentation was just a bore, not worth mentioning. What I thought would enlighten me with new and exciting WCF features was something long, featureless (the technical details as well as the presenter) and lingering on the description would only make me look vengeful and cruel. One must maintain apparences, after all.

WCF highlights: google for them. WCF replaces Web Services, Remoting, Microsoft Message Queue, DCOM and can communicate with any one of them.

Something happened to Peter F. Hamilton between the second and third volumes of the Greg Mandel trilogy. He turned from a good average writing style to a great one. The Nano Flower is almost at the same level as Pandora's Star and births Hamilton's detailed universe. No wonder there was no fourth novel in the series, it would only drag the writer down.

The book has everything I came to expect from Peter F. Hamilton: hard sci-fi, detailed socio-political context, aliens, the party of braves, the sociopathic villains, a reference to Lord of the Rings... I do believe that Tolkien inspired Hamilton to write, but now it has become the chink in the writing armour, Achilles' heal. I've read a few great Hamilton books, but each had the basic layout of a battle between good and evil, groups of people uniting under improbable ideals to defeat an all too dark a villain. The qualities that attracted so many people to Lord of the Rings, for example, like camaraderie, honor, desire to help others, are not so attractive to me anymore. They are basic, very unlikely to truly define a character. I would very much want to see a Hamilton gray book. Maybe the new Void Trilogy will fulfil my wish (if I don't die of waiting for it to appear), although the vengeance driven character that remains pure and good at heart described in the first volume doesn't give me a lot of hope.

Anyway, even if I do seem to concentrate on what I don't like or what I would change in the writing of this great book maker, my appreciation for him is way higher than any possible defect in his writing. So, if you don't totally dislike sci-fi, go to a book store and buy Peter F. Hamilton books.

I was looking for songs by David Bowie, one of my favourite singers, but I wanted to find something different than the brilliant Under Pressure which he performed together with Freddie Mercury and which is my "subway song" :) And I found another "coproduction", this time he teamed up with Nine Inch Nails, another band that I enjoy (Perfect Drug is their best song, I think, although I may interpret it more personally than others).



The funny thing is that I remembered to post a Bowie song when I heard a quote from Criminal Minds, a series I am watching:
Garcia: [To Reid and Morgan] When I was in the ambulance I could hear the song 'Heroes' playing in my head. I kept flashing in and out of consciousness and I remember thinking, 'Wait. Is David Bowie really God?'

If you don't want to read the whole thing and just go to the solution, click here.

I reached a stage in an ASP.Net project where a I needed to make some pages work faster. I used dotTrace to profile the speed of each form and I optimized the C# and SQL code as much as I could. Some pages still were very slow.

Now, I had the idea to look for Javascript profilers. Good idea, bad offer. You either end up with a makeshift implementation that hurts more than it helps, or with something commercial that you don't even like. FireFox has a few free options like FireBug or Venkman, but I didn't even like them and then the pages I was talking about were performing badly in Internet Explorer, not FireFox.

That got me thinking of the time when Firefox managed to quickly select all the items in a <select> element, while on Internet Explorer it scrolled to each item when selecting it, slowing the process tremendously. I then solved that issue by setting the select style.display to none, selecting all the items, then restoring the display. It worked instantly.

Can you guess where I am going with this?

Most ASP.Net applications have a MasterPage now. Even most other types of sites employ a template for all the pages in a web application, with the changing page content set in a div or some other container. My solution is simple and easy to apply to the entire project:

Step 1. Set the style.display for the page content container to "none".
Step 2. Add a function to the window.onload event to restore the style.display.

Now what will happen is that the content will be displayed in the hidden div, all javascript functions that create, move, change elements in the content will work really fast, as Internet Explorer will not refresh the visual content in the middle of the execution, then show the hidden div.

A more elegant solution would have been to disable the visual refresh of the element while the changes are taking place, then enable it again, but I don't think one can do that in Javascript.

This fix can be applied to pages in FireFox as well, although I don't know if it speeds anything significantly. The overall effect will be like the one in Internet Explorer table display. You will see the page appear suddenly, rather than see each row appear while the table is loaded. This might be nice or not nice, depending on personal taste.

Another cool idea would be to hide the div and replace it with a "Page loading" div or image. That would look even cooler.

Here is the code for the restoration of display. In my own project I just set the div to style="display:none", although it might be more elegant to also hide it using Javascript for the off chance that someone might view the site in lynx or has Javascript disabled.

function addEvent(elm, evType, fn, useCapture)
// addEvent and removeEvent
// cross-browser event handling for IE5+, NS6 and Mozilla
// By Scott Andrew
{
if (elm.addEventListener){
elm.addEventListener(evType, fn, useCapture);
return true;
} else if (elm.attachEvent){
var r = elm.attachEvent("on"+evType, fn);
return r;
} else {
alert("Handler could not be removed");
}
} 

function initMasterPage() {
document.getElementById('contenuti').style.display='';
}

addEvent(window,'load',initMasterPage);

Update: this problem appeared for older versions of AjaxControlToolKit. Here is a link that says they fixed this issue since 21^st of September 2007.

You are building this cool page using a TabContainer or some other AjaxControlToolKit control and everything looks smashing and you decide to add the UpdatePanels so that everything would run super-duper-fast. And suddenly the beautiful page looks like crap! Everything works, but your controls don't seem to load the cascading style sheet.
What is happening is that you make a control visible using update panels and so the CSS doesn't get loaded. I don't know exactly why, you would have to look into the AjaxControlToolKit source code and find out for yourself.

I found two fixes for this. The first is the nobrainer: add another TabContainer or AjaxControlToolKit control in the page, outside any updatepanels, make it visible, but set its style.display to 'none' or put it in a div or span with style="display:none". The second is the AjaxControlToolKit way. In the Page_Load event of the page or user control that contains the TabContainer or AjaxControlToolKit control add this line:

ScriptObjectBuilder.RegisterCssReferences(AjaxControlToolKit control);

This is part of the ExtenderControlBase class in AjaxControlToolKit, which is inherited by most if not all of their controls.

Now it should all work wonderfully.

Ok, so I used a javascript script in my page by referencing the external file and it worked. I did the exact same thing with another file and it wasn't loading! After scratching my head bald I've decided to switch the places of the two tags and voila! the script that worked would not load! The one that did not work previously was purring nicely.

My calls looked like this:

<script type="text/javascript" src='script1.js'/>
<script type="text/javascript" src='script2.js'/>

After scratching my skull a little more (blood was dripping already) I realized that the script tags are atomic tags, they should have no ending tag. Why would they, the content is specified in the src attribute. But on the DOM page for the script element there is an obscure line saying: Start tag: required, End tag: required. I switched to <script></script> format and it worked.

Oh, you are wondering why the first script worked? Because somehow an atomic script tag is erroneous, but it doesn't return any error. Instead it is treated like a mistyped start tag and the atomic portion of it is ignored. The second script would not load since the browser expected a script end tag. Maybe he even interpreted the second tag as an end tag for all I know.

Apparently, the innerText property of Javascript elements is not available for FireFox or other browsers other than Internet Explorer. FireFox exposes something similar, but with the name textContent. Why would any one of these two butt-heads learn from the other and cooperate for the common good?

The functionality of this property is to expose the inner content of an element minus any html tags. With something like <div><span class="red">Red text<span></div> the div innerText/textContent property returns "Red text". It could also work when setting, stripping tags from the content before setting innerHTML, although it seems that for both implementations setting innerText or textContent is equivalent with setting innerHTML.

There are also links about javascript functions that would replace, improve or otherwise ease the developer's work by adding the same functionality.

• I have started with a book recommended by many sites about software architecture and design as a must read: Smalltalk Best Practice Patterns by Kent Beck. It is well written and I can see why it attracted a lot of people, even if there aren't so many Smalltalk programmers out there: it is written for use! That means that the book has less than 200 pages, but each of the specific patterns there are laden with references to others in the book, some even in the next chapters. That's because the book itself is structured to be kept nearby and consulted whenever a new project is started or in progress, not something that you read and forget in a bookshelf, gathering dust.
  
  However, the patterns presented are sometimes useless for a C# programmer, some being already integrated in language and some being not applicable. The fact that Smalltalk works with Messages further complicates things. I did eventually open a link to #-Smalltalk, but who will ever have time for it?
  
  I have decided that rather than reading this book and forgetting or not getting many of the things inside, it would be more efficient searching for a similar book that is more C# oriented.
  
  So, bottom line: great approach, both literary and technical, but a little hard to use for one such as me. Anyone know of a C# Best Practice Patterns book?
• My next attempt was in the wonderful world of management! Yes, I was approached by their people, apparently they want me to join them and rule the galaxy. Maybe if they wrote more concise books!!
  
  
  The Knowledge Management Toolkit: Practical Techniques for Building a Knowledge Management System starts interestingly enough, describing the need of every company to build a way to retain knowledge against employee turnover or plain forgetfulness. Basically what I am doing with this blog. But it goes further than that, quantifying the return on investment for such a KM system, describing ways of rewarding people and encouraging them to use it (it is not something done automatically).
  
  All great, but then it kept going on telling me how the book is going to change my world, rock my boat, help me in my business... after reading the preface, the introduction, the "how it's structured", the marketing bullshit, the first chapter (full of promises about the next chapters) I was completely bored! If there is any technical description of what to do, when to do it, how to do it, why , etc, I didn't find a trace of it in the first chapter. Reading on my PDA from a badly scanned txt file didn't help either.
  
  Besides, I got more and more frustrated. I barely have the time to scratch all I planned on doing in this holiday (while getting nagged on by the wife, the cat and whatever friends I got left) and improving the company workings is not my responsibility. I am the god damn coder! I write code! I have a management system all of my own and I get my ROI by googling a frustrating bug and discovering I solved it a month ago myself and wrote about it here.
  
  So there! If you have a business it is good to have a repository of actual knowledge (a.k.a. processed information) and encourage people to use it so that they don't take all their experience with them when they leave your sorry cheap ass company! I've summarised the entire book for you! I am not reading it anymore. It hurts my sensitive techie soul!

A Quantum Murder comes to continue the story of Greg Mandel, psychic detective. Does it sound tacky? I agree that the subject is not the best possible choice, but the writing is good, Hamilton style: scifi social speculation, action, a detective story that makes the reader wonder what will happen next and whodunit!

I personally did enjoy the book, but it wasn't even close to the latest and more hard scifi writings of Peter Hamilton's. Maybe it's just me, but mental detectives in a post apocalyptic corporate world just doesn't do it for me. Maybe that's why The Nano Flower's first chapter starts with Suzi doing tekmerk stuff ;)

Again, the second volume of the three Mindstar books is stand-alone, making it easy to read even if you didn't read the first book. It is basically a scifi policier.

Another great book from Hamilton! This is part of the "Greg Mandel trilogy", that meaning there are three books to show for this particular side of the Hamilton universe, and unlike his later work, Mindstar Rising is actually a stand-alone book. You can read it without its next two parts and understand it as a single story. I've even started to read A Quantum Murder (volume 2) and Hamilton is making the effort to summarize what the characters did in the previous volume.

I understand the dilemma facing such a prolific writer: should one break a story in stand alone segments, thus cauterizing story arches and trying to put every single idea into single puny volumes? Should one bore the readers with summaries of previous volumes? Or should one write huge three volume books that you need to read in their entirety to understand anything? :) It would be a hard choice for me, as well. All I can say is that I enjoyed the big stories as well as the more common way of writing one book stories and reminding the reader of previous stories. I highly recommend the Seafort Saga for this particular style, even if it grows old by the eighth volume. Consider it, though, I was attracted to the story by accidentally reading volume 3 and understanding all of it!

Anyway, back to the book that I was reviewing, damn it! Mindstar Rising describes a post apocalyptic Earth, where global warming and subsequent social and economic disasters brought civilization to the brink of dissolution. A psychic ex-military, now working as a private eye is asked to help in finding the source of industrial sabotage and from then on it just gets more complex and thrilling. I wouldn't say that this is one of Hamilton's better books, though. Even if the book is definitely fun to read, it pales in comparison with Night's Dawn or the Commonwealth Saga. It is more like Fallen Dragon in style, although I do hope it doesn't end in the same ridiculous way.

More to come as I read the next two books.

This book started great. It outlaid a structured view of how a software company should function, from the way one designs projects, to code and documentation standards. I really hoped this was the mother load: a book that would show me how a "standard" IT company functions on every level. It wasn't. Mark Horner started it well and ended it badly. A shorter book and more to the point would have been enough.

Bottom line, the book starts in an interesting way, describing what I would call "IT gap analysis", in other words the application of a simple idea: begin with a detailed (and documented) picture of what the current (start) situation is, then describe just as much detail the situation you want to reach (end). From then on, the job of describing the transition becomes orders of magnitude easier. That applies to software projects (start with what the client has and needs, then create the plan to bridge the gap), documentation (start with the functional and end with the structural) and ultimately code (start with abstract classes and interfaces, then fill in the missing code).

Other than that there are some (hopefully) nice references, then a lot of empty space filled up with irrelevant things: description of design patterns (which are nice, but there are books for something like this), a glossary of terms (some were never even used in the book!) and then the general way of describing something, then adding the "Standard acknowledges" part that basically says the same thing as his own description. It generally felt as a student paper from one that needed only a passing grade.

Sorry Mark, better luck next time. I will add here a short summary of what yours truly thought was noteworthy in the book:

• use gap analysis for all the levels of your software work. When you define what you have and what you need, filling the blanks becomes easier.
• use functional documentation, design documentation and structural documentation to detail what you wanted the software to do, how you designed to solve the problems and what are the basic building blocks of the project (classes, patterns, etc).
• use code standards and peer reviews and even external code auditing to improve the quality of code. Refactoring is a must. Popular code development methodologies include Extreme Programming and Rational Unified Process.
• use a design standard like the open-source architecture framework (TOGAF)
• the enterprise vs. domain dichotomy. Should a software be started from scratch and done for the current set of requests only, or should it be designed as a general component ready for reuse? I would really go towards the enterprise, even when the profit from the extra work is not immediately obvious. Sometimes things that you have prepared in advance and nobody acknowledged become a real time (and life) saver when unreasonable requests tumble down upon you.
• also linked to the enterprise/domain issue: an application framework solution. Create a basic Visual Studio solution that contains common components used in many projects and use it as a startup solution.
• use the Visual Studio formatting options to keep your code well formatted. Use a standard of naming variables, methods, properties. My own choice is using lowerCamelCase for inner variables, prefixing the name with an underscore for fields. UpperCamelCase (or Pascal) for methods, properties and class names. Hungarian notation for controls (lbName for a label with a name). I don't really care if one names the control txtName, tbName or tboxName, as long as the prefix is revealing.
• use the Obsolete attribute for methods and properties that are intended to be removed in the near future. In my own library I have used methods that became obsolete with the coming of .NET 2.0 and used this attribute to point not only to the obsolescence, but also to the blog entry detailing the reasoning behind it.
• this is basically derived from other sources, but I do think it is relevant: best practices recommends using composition over inheritance, wherever possible. I admit that the coding of composition is much more complex, but with the refactoring tools found in Visual Studio and its add-ons (like my beloved Resharper), it becomes similar in complexity.
• references:
  
  1. book: Programming C# by Jesse Liberty, published by O'Reilly
  2. dude: Martin Fowler is a leading authority on refactoring
  3. books to understand object-oriented development: Object-Oriented Analysis and Design with Applications by Grady Booch, published by Addison-Wesley in 1994
  4. Expert C# Business Objects by Rockford Lhotka, published by Apress in 2003
  5. book: Code Complete, by Steve McConnell, published by Microsoft Press 2004
  6. authorities on design patterns: Martin Fowler, Gregor Hohpe, Bobby Woolf
  7. dude: professor Trygve Reenskaug and his discussion on the role of object collaboration: Role Modeling and UML-VM discussions

My conclusion: read my summary and you don't waste two days of reading time.

I was asked to fix a bug and I soon found out that the "bug" was actually IE's regex split implementation! You see? When you split by a string, the resulting array does not contain any empty spaces found!

Ex: 'a,,b'.split(/,/) = ['a','b'] in IE and ['a','','b'] in FireFox.

Searching the web I found this very nice page from regular expression guru Steven Levithan: JavaScript split Inconsistencies & Bugs: Fixed!. You can also find there a link to a page that tests the issues with your browser's Javascript regex.

Bottom line! Use Steven's code to regex split in Javascript.

I was bent on writing an article about tea. You see, tea :) is a word often used instead of "infusion", but the definition of the word says it is specifically an infusion of Camellia sinensis, or the tea plant. I drink tea a lot, although I prefer to alternate the different tastes as much as possible.

But the tea and coffee plants are far from being the only ones used for energizing drinks. In the Theaceae family alone there are a few species that are traditionally used for infusions.

Then there is the mate, from Yerba Mate, a species of the Holly (Ilex) family. 
Other members of the Ilex family are used for traditional drinks.

The Roiboos infusion is an African tea made from a plant that is part of the legume family! I've tried it and I didn't enjoy it much.

How about a little Coca to boost the spirit? The "Coca tea" or "mate de coca" is a traditional drink in the Andes.

You can try Bubble tea made from Tapioca, the processed root of the Cassava plant.

All these links are giving me headaches, but there is more! The stuff above is just the tip of the iceberg, or the most famous plant infusions that are known as tea, because there are all the other plant infusions that are covered by the more generic term "Herbal tea". On that particular page you can find over 60 herbal infusions not made from the tea plant, including mate.

Please follow the plethora of links as I can assure you you will find a lot of interesting things there. This also got me thinking of the way the markets are functioning right now. I drank about every possible tea I could commercially find without looking too deep and I've only experienced tea and mate infusions. How about all the others? When will I be able to drink tapioca tea or coca tea? The plant itself is not illegal! Perhaps deeper digging in the commercial part of the Internet will help me find sources for some of the drinks above. Also, if I only had the time, I would try to learn about herbalism.

Eh, enough of this. Now I must add the images to the post and hopefully someone will read it.

Here is the video for Adrenaline:



Pleymo is a French band, friends of Enhancer and Aqme, two other French bands that I enjoy listening to. Check them out:
French Wikipedia page
English Wikipedia page
Pleymo official site
Myspace page