What mapping tool support is there available for using TopLink Essentials?
There is no mapping tool support directly within TopLink Essentials or GlassFish. Developers can use any development environment that supports JDK 1.5 or higher allowing the use of annotations and some of the new features leveraged in the API. There are currently efforts going on in most leading IDE’s to deliver better support for using JPA. Oracle is leading the way with the early support for JPA in JDeveloper 10.1.3 as well as leading the Eclipse Dali JPA Tools project as part of the Web Tools Platform (WTP).