Copland is an Inversion of Control (Dependency
Injection) container for Ruby. It borrows architectural
concepts from the HiveMind Jakarta project, but
implements them in significantly different ways.
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Cycles in dependencies are now reported legibly
when they result in errors. Substitution symbols
in configuration points work correctly now.
Services may be declared with either public or
private visibility, to restrict their visibility
outside of their package. Log message formats are
now customizable, with formats similar to those
offered by Log4j. A more practical intro to
Copland was added to the manual. The MagicPoint
source for the RubyConf 2004 presentation on
Copland was added to the docs subdirectory.
The "factory" element can now be omitted when
defining a service point, and it will default to
"copland.BuilderFactory". The BuilderFactory now
supports an "invoke" element, describing methods
and their parameters to invoke while initializing a
new service. A warning is now logged when you try
to set a property that does not have an explicit
setter defined. Registry#service now accepts an
optional block, which will be passed to
"instance_eval" on the new service every time the
requested service is instantiated.
