Jason Hunter

Presentations

Open Source from the Inside

Open source isn't about a license, it's about human interaction and individual motivation. I've seen open source from all sides. I've been an individual contributor and a project leader. I've worked on commercial and open source efforts, and have both helped commercial projects go open and designed ways for open projects to absorb commercial codebases. I've been on the front lines in the Apache/Sun negotiations on open source Java that ended on the JavaOne keynote stage with Scott McNealy. In this talk, I'd like to share my favorite stories in and around open source and the lessons they teach us.

• What it was like to take the servlet engine Tomcat from a Sun internal project to an Apache open source project

• How Jakarta changed Apache's character

• How not to think about Apache

• The pros and cons of leading the JDOM project

• Why JDOM is not part of Apache

• Why my latest coding work isn't open source

• How companies can best utilize open source and open source ideas

• The past, present, and future of open source Java

Forgotten Web Algorithms

In this talk I'll explain -- without any needless math or boring proofs -- several fun algorithms of interest to back-end web programmers. Each algorithm was selected because it's really practical, really interesting, or both. The algorithms aren't always the same but can include: public key cryptography, credit card checksum validation, TCP Slow Start, two's complement, priority queues, the XOR swap, and the Google MapReduce function for massively distributed calculation.

Attendees need only come with a curiosity about the algorithms that go into the programs we use every day.

New Features in Java 5

The new Java 5 release introduces a number of significant Java language enhancements: generics, typesafe enums, autoboxing, an enhanced "for" loop, a static import facility, and a general-purpose metadata facility. This talk gives an overview of the changes and helps you understand what all the funny new syntax means.

The main new language topics covered:

• Generics, also called "parameterized types", which let you specify the type of objects used in a collection, among many other things.

• Autoboxing, that lets you implicitly convert from primitives to reference types, and vice-versa.

• An Enhanced For Loop, that lets you iterate over arrays or collections with half the code as before.

• Typesafe Enums, to create object-oriented, extensible enumerated values.

• Static Imports, to put into scope static methods and fields.

• Varargs, that allows methods to accept an arbitrary number of parameters.

• A Metadata Facility, allowing decoration to classes and methods for later tool consumption. Covered in more depth in the "Java Metadata" talk.

• Random new Library Features, like the ability to control external process launching, output formatting, and input scanning.

This talk describes the proposed changes and shows how they work together to improve the Java language. We also take breaks to see how closely Java matches the C# designs!

Attendees are assumed to be competent Java programmers.

Greasemonkey: Ajax For One

Greasemonkey is a Firefox extension with a hook to let you run your own JavaScript after each page loads. People have written hundreds of Greasemonkey scripts, each using Ajax techniques, to do everything from making a static page dynamic to changing a page's style to integrating comparison pricing on Amazon pages and giving Google search results easy keyboard shortcuts. Greasemonkey lets you take back control of the web browsing experience -- and teaches you Ajax while you're at it.

In this talk we'll look at about a dozen useful Greasemonkey scripts. Each script provides a benefit in its own right, but like good engineers we'll dissect them to see what makes them tick.

Some scripts we'll cover:

• Tracing XMLHttpRequest activity on a page
• Avoiding the Slashdot effect with auto-links to mirrors
• Replacing a page's CSS design
• Making hidden form fields visible in the page
• Auto refreshing pages
• Browsing the web through Google's cache
• Adding keyboard shortcuts to Google's search results
• Auto-selecting ad-free print versions of online articles
• Working around Google's protection of Google Book Search images
• Comparing book prices inline
• Downloading all the images behind thumbnails
• Using Platypus for graphical page editing of pages you don't own!

Attendees leave this talk having more power over their web browsing and a great tool to get going with Ajax for one.

What's New in Java 6

The Java 6 (Mustang) release should make your life easier, for a change. It doesn't alter the core language like Java 5 did. It doesn't pack in so many sub-JSRs that you'll be overwhelmed by the amount you have to learn. Instead Java 6 adds several handy things that honestly should have been added before. Among the improvements we'll cover in this fast-paced class:

• A new Console class
• A real Compiler API
• A GIF writer
• Pluggable Locale data
• Access to disk partition size data
• Array reallocation
• Low-level floating point functions
• Reflective access to parameter names
• Access to network interface details
• Pluggable annotation processing
• Improved class file format
• Streaming XML with StAX
• A new Scripting interface

With Sun developing Java 6 in public, you can not only learn about these changes but provide feedback as well.

Web Publishing 2.0

If we're moving toward Web 2.0, what does that mean for online publishing? In this talk I'll answer that question. Based on my experience as Principal Technologist at Mark Logic working with dozens of the largest online publishers, I'll present a vision for how the Web 2.0 concepts like personalization, collective intelligence, the long tail, and the importance of "owning the data" can and should reshape the face of online publishing -- and how XML, XQuery, and XML-aware text search act as the key enablers. I'll also introduce new Web Publishing 2.0 concepts like "Sweat the content" and "Give answers not links".

(Not content to be a windbag, I'll use practical examples and demos to help get the points across.)

XQuery By Example: Building an Email Archive System

The classic searchable email archive system is cluged together -- a frankenstein monster combining a relational database with a search engine, with Java just barely able to keep the two together. In this talk we'll demonstrate how email is more content than data, how it's better encoded in XML rather than relational tables, and how Java can convert emails to XML and drive an XQuery backend to produce a simpler and more scalable email archive system.

Attendees should be familiar with XML and have an interest in text search and back-end architecture design.