Multi-Configuration support in MTJ
- 1. Multi-Configuration Support for MTJ (Mobile Tools for Java) Feng (Marvin) Wang Gang (Allen) Ma Gustavo de Paula
- 2. Agenda DSDP MTJ Overview Device Fragmentation Problem Possible Solutions Java preprocessing Multi-Configuration Concepts & Use cases Code assist Demo
- 3. DSDP MTJ Overview Glue between the Eclipse IDE and the JavaME SDKs (emulators) MTJ does NOT provide the SDKs Each vendor provides their own SDKs MTJ provide the basic developer workflow Import JavaME SDK (each SDK has several devices associated to it) Create MIDlet Suite Project Build Project Create Deployment Package Eclipse Platform JDT MTJ SDK Extens. Vendor A JavaME SDK Vendor B JavaME SDK Vendor C JavaME SDK UEI Vendor Proprietary Protocol UEI
- 4. Device Fragmentation Problem 1 Billion JavaME Devices Hardware Software Carrier Display size, color Number of keys Accelerometer Different APIs APIs with optional Components Proprietary APIs File name Requirements Localization MIDlet Requirements Hard to do Professional JavaME Development Fragmentation
- 5. Possible Solutions Standardize everything Almost impossible to happen Everyone wants to be different Applications want to use device specific features Live with the problem and adapt Old and good preprocessing Not available in standard Java There are some external preprocessing solutions Device Database There are databases on the internet (proprietary and GPL) MTJ can import databases
- 6. MTJ Approach: Live with the Problem and Adapt Antenna preprocessor MTJ Java Code Preprocessor Multi-Configuration Preprocessor Code Assist Each project can have multiple runtimes Each runtime defines preprocessor tags (Symbols) Symbols are used on the code assist
- 7. Antenna Preprocessor Antenna is a open source project created on 2002 ( http:// antenna.sourceforge.net / ) Defines several JavaME build related tools Build, Obfuscate, Package, Sign, Deploy and Preprocess Preprocessor defines Preprocessor language Input java code with preprocessor symbols Output preprocessed java code //#if ScreenWidth>100 && ScreenHeight>120 do something; //#else do something else; //#endif
- 8. Multi-Configuration Concepts: Devices The DeviceImporter knows how to “ talk ” to one SDK Returns all Devices that one SDK have Each device has a DeviceClasspath associated to it ... and a list of APIs Devices are persisted on the DeviceRegistry
- 9. A Symbol is a pair <name; value> Symbols are organized in SymbolSets Each SymbolSet has a name and a list of Symbols i.e.: Symbols: <screen.width;240>, <screen.height;320> Symbol set: <MOTV3; <screen.width;240>, <screen.height;320>> SymbolDeviceFactory can import devices database and same them on the workspace Multi-Configuration Concepts: Symbols
- 10. A MTJ project has a list of MTJRuntimes Each project has a current active Runtime Each Runtime has A Device A project symbol set (created based on the device properties) A list of workspace SymbolSets Multi-Configuration Concepts: Runtimes
- 11. Multi-Configuration Use Cases: Manage Configurations Create Project Wizard Add, Remove, Edit Select one to be the active
- 12. Multi-Configuration Use Cases: New/Edit Configuration Select SDK/Device associated to this configuration SymbolSet associated to chosen Device Workspace level SymbolSets (imported from device database)
- 13. Multi-Configuration Use Cases: Switch Configuration Switch active configuration or manage current configurations
- 14. Multi-Configuration Use Cases: Build Project All configurations are build on the same time Export antenna build files to be called externally One build for each configuration JAR/JAD Code is preprocessed Build files and symbol files for each configuration
- 15. Content Assist Preprocess Help user to input preprocess code in Java Editor Preprocess code format Directives Symbols Operators Values All preprocess code starts is “//#” //#ifdef mmedia //#ifdef nokia //#if s60_ver=="1.0" import com.nokia.mmapi.v1 //#elif s60_ver=="2.0" import com.nokia.mmapi.v2 //#else import com.nokia.mmapi.def //#endif //#else import javax.microedition.mmapi //#endif //#endif
- 16. All available directives are presented Brief description of each directive Content Assist Directives
- 17. All symbols provided by all configurations registered on the project are presented Each symbol has Name, Value, if active, provider information Content Assist Symbols
- 18. Propose preprocess template for the user. Content Assist Templates After apply:
- 19. Manage current templates Create new templates Edit current templates Content Assist Templates
- 20. Demo & Thanks! DSDP MTJ Web site: www.eclipse.org/dsdp/mtj DSDP MTJ Wiki: http:// wiki.eclipse.org /DSDP/MTJ Newsgroup: news:// news.eclipse.org/eclipse.dsdp.mtj Developer List: http://dev.eclipse.org/mailman/listinfo/dsdp-mtj-dev
- 21. Wish list… Preprocess Resources Preprocess full java files Preprocess JAD file Sign based on configuration Improve error handling
Editor's Notes
- #2: Hello everyone, I am Wang Feng from Sybase. I will talk about the multi-configuration support for MTJ – the Mobile Tools for Java.
- #16: Because preprocessing is very important for build for multi-target, so we add preprocess content assist support to Java editor. Which can help user to write preprocess block. The content assist can propose Antenna preprocess directives.
- #17: Because preprocessing is very important for build for multi-target, so we add preprocess content assist support to Java editor. Which can help user to write preprocess block. The content assist can propose Antenna preprocess directives.
- #18: Because preprocessing is very important for build for multi-target, so we add preprocess content assist support to Java editor. Which can help user to write preprocess block. The content assist can propose Antenna preprocess directives.
- #19: Because preprocessing is very important for build for multi-target, so we add preprocess content assist support to Java editor. Which can help user to write preprocess block. The content assist can propose Antenna preprocess directives.
- #20: Because preprocessing is very important for build for multi-target, so we add preprocess content assist support to Java editor. Which can help user to write preprocess block. The content assist can propose Antenna preprocess directives.
- #22: Because preprocessing is very important for build for multi-target, so we add preprocess content assist support to Java editor. Which can help user to write preprocess block. The content assist can propose Antenna preprocess directives.