2005 JavaOne SM Conference | Session BOF-9161 Exploring Annotation-Based Programming through the APT...

2005 JavaOneSM Conference | Session BOF-9161

Exploring Annotation-Based Programming through the APT and Mirror APIs

Tim Wagner, Senior Manager

Gary Horen, Program Manager

BEA Systems, Inc.http://www.bea.comBOF-9161

2005 JavaOneSM Conference | Session BOF-9161 | 2

Agenda

Why apt/mirror in Eclipse?Feature overviewTechnical detailsFuture plansQ&A


Why apt/mirror in Eclipse?

• Want high-fidelity IDE support for annotations…• …but don’t want to reinvent the wheel

Wouldn’t it be great if existingapt processors could run inside Eclipse?


Feature Overview

• Eclipse 3.1 plugin that…• Runs apt processors interactively inside Eclipse

• Diagnostic integration “red squiggles”• Build integration (including problem view)• Generated types behave as you’d expect

• APT factories can be loaded as plugins or jars• UI to configure APT options


Technical Details

• Implementation of 1.5 JDK mirror APIs over the Eclipse type system (via wrappers)

• Processors executed during compilation• Separate passes: reconcile (interactive) and build• Replicates apt semantics (fixed point iteration, “claim”

model)

• Factory discovery• Jars containing factories or Eclipse plugins• Preference UI supports enabling, ordering of jars


Future Plans

• Support for enhanced IDE functionality• Content assist (code completion) in annotation values• Quick fix• Integration with property view

● Type-specific editors● Propose new annotations/annotation values

• Search and refactoring over annotation values• Wizards for creating annotation processor factories and

plugins• Adopt JSR 269


Release Dates

• Preview• Summer ’05 (i.e., soon!)• Branch of JDT 3.1, based on GA version (new

component + minor JDT API enhancements)• Based on open source (yay!) apt/mirror interfaces in

the 1.5 JDK

• Eclipse Platform 3.2• Summer ’06• Standard part of JDT – will reach all Eclipse users• Ideally JSR 269-compliant APIs


DEMOSample apt processor running inside Eclipse


Q&A

2005 JavaOne SM Conference | Session BOF-9161 Exploring Annotation-Based Programming through the APT...

Documents

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