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JBoss AS Tools

able to deploy my application directly from the workspace

bad news is that JBoss AS 7 does not currently support other persistence providers like Eclipselink, OpenJPA or DataNucleus

GlassFish and Resin, you can simply drop the JARs of your preferred provider and its dependencies in a designated folder of your server installation and edit your persistence.xml to override the default provider of the server

JBoss AS 7 appears to require an adapter per persistence provider, which to me looks like an unfortunate and unnecessary design decision

documentation continues to be sketchy and far below the standard of JBoss AS 5

top-level performance

classloader leaks

productivity issues of the Eclipse integration

lack of support for JPA providers other than Hibernate

Each of these is currently a blocker for using JBoss AS 7 in production

Redeployment

after a couple of redeployments, there was an OutOfMemoryError

new classloader leak

JBoss AS 7: Catching up with Java EE 6

Performance measurements

JBoss AS 7.0.2

GlassFish 3.1.1

Empty server startup time 1.9 s

3.2 s

Empty server heap memory 10.5 MB

26.5 MB

Empty server PermGen memory 36.3 MB

28.4 MB

MyApp deployment time 5.8 s

JBoss AS 7 is now at a competitive level with Resin and Glassfish and actually outperforms Glassfish in almost all of these tests

by the container in order to realize common use cases

An interface becomes a vehicle for encapsulation or abstraction,

“Interfaces are used to encode similarities which the classes of various types share, but do not necessarily constitute a class relationship. For instance, a human and a parrot can both whistle; however, it would not make sense to represent Humans and Parrots as subclasses of a Whistler class. Rather they would most likely be subclasses of an Animal class (likely with intermediate classes), but both would implement the Whistler interface.” [http://en.wikipedia.org/wiki/Java_interface]

Extensive use of interfaces derives from a

Premature Extensibility Is the Root of Some Evil

The number of artifacts will double and you will have to introduce a configuration facility

Tide will automatically inject shared data and correctly route events without requiring the application developer to write their own mechanism for sharing information or explicitly registering event listeners

Tide events are a simplification on the already existing Flex event framework