Let me first convey that i deeply regret for not attending the day-1 of the conference. I think the sessions there were more techy and geeky. It doesn’t automatically mean the day-2 sessions were not good. It felt better to hear the subject from their creators themselves. The time alloted to each subject(50 min) is not enough to go deep and thus satisfy the geekier crowd around but you get to hear on so many things in small time in bargain, so no repents. 🙂 Add to it the fact that you usually don’t get such high profile speakers in conferences around India. Anyways, here are my take aways from the sessions i attended today. The slides for all presentations are available here.
- Demonstrated the task ui from within Eclipse covering basic concepts of the tool and the idea behind its existence.
- Connectors for OSS products like Bugzilla, Trac, Ant, Spring, SVN, CVS etc apart from quite a few for commercial tools from vendors like Telelogic, BEA, Atlassian etc.
- Getting ready for 2.0 release with lots of emphasis on performance, search etc.
Best practices for inter-operable Web Services (by Thilo Frotscher)
- Discusses two approaches to WS development – “Code-First” and “Contract-First”.
- Code First : Start with java code and generate Schema, WSDL and other artifacts using tools. It leads to interoperability issues because the tools tend to use platform specific data types like Vector, DataSet etc which may not have a mapping data type in XML Schema.
- Contract First : Create the schema first using the data types defined in xml schema (and creating complex types out of it). Generate WSDL using schema which sets the interface contract. Now use the interface and proceed to the code. Recommends usage of visual tools like Eclipse WTP 1.5 WSDL Editor.
- Strongly discourages first approach and recommends use of contract first.
- Newer tools and frameworks are moving towards POJO based WS development which essentially is a “code first” approach. However one can still bit little cautious and use them as they are lot mature and provide a relatively clean WSDL these days.
- Use literal instead of encoded.
- Dont rely on HTTP for transport. Do not use HTTP specific features like Cookies, SSL, HTTP Header etc.
- Use SOAP header to store meta info.
- Recomended reading on Web Services – Web Services Platform Architecture (by Sanjeeva W)
- Just a couple of weeks back i was thinking about task based contexts for my desktop and here it is, though not OSS or free. 😦 Take Google (or Yahoo) desktop search and add task based contexts (and related features) to it. thats your Tasktop. 😉
- Natural extension of Mylar to Windows and Mac desktops for now. No plans for Linux as of now.
- Comes both as Eclipse plugin and Eclipse RCP app.
- Showcases its usage for a project manager who uses Google Cal, Outlook Mail, M$ Office, Bugzilla and Xplanner for his tasks and how Tasktop helps her reduce the clicks required to perform her daily tasks.
- All others were mostly marketing stuff. However, just a thought from my side – Since it can store the action history including the browsing history, can this be potentially used to spy on young children’s adventures on internet?
- catchy word – Yes i had not heard of it before as well. Well it simply means writing applications using multiple programming languages, each targeted towards specific problems which are best solved by that language.
- We have been doing it anyways – Java + SQL + XML + JS? So whats new? Ruby 🙂
- Pretty smart hand picked instances of java code which look problematic – using static initializer to display Hello World without even writing a main() method in java code, need to write class type multiple times in generics, recursive definition of Enum in javadoc, presence of Zero length arrays etc. Basically bashing static typing and advocating dynamic typing (a la Ruby).
- Message was to view java as a combination of language and platform. The language is retarding / dieing but the platform is as beautiful as ever.
- All in all the talk was very humorous and interesting. One statement that liked very much was – OR mapping is Vietnam of Computer Science. 😉
Shale framework : Taking JSF to next level (by Craig McClanahan, SUN Microsystems)
- I must mention this – i was thoroughly impressed by his simplicity. His geeky looks reflected deep knowledge and responses to queries only floored people further. Sometimes i wonder if simplicity leads to greatness or greatness inspires simplicity.
- An extension to JSF for a cleaner design, convention over configuration principle with annotation support, hollywood principle using callback methods for better encapsulation
- Talked about features – dialog manager for conversation management, clay (similar to Facelets), view controller, ajax support using remoting etc.
- Built-in unit testing framework, JNDI and Spring integration.
- He was impressed with the approach of extending the components to business layer leveraging the EJB3 features by Seam framework.
- Thinks that GWT puts too many restrictions on a developer for her to choose it for enterprise development.
- Either add it to your web app WEB-INF folder or use in remote mode. It needs test cases in html tables which can be either hand coded or recorded using SeleniumIDE FireFox plugin.
- Explained few cool features like ajax testing, dynamic data in recorded scripts, standard red/green coloring of test runs etc.
- Can not deal with non-JS accessible parts in page like applets, activex, flash content etc.
Over all, it was a tiring day. Sessions were mostly at an overview level than the depth. There was no time for QnA and it was a difficult choice between missing the next session or catching the speaker outside for questions.