I'm pleased to announce the first release candidate of
peaberry, an extension library for
Guice that supports dependency injection of dynamic services. It provides
OSGi integration out of the box, and has plug-in support for other registry-based service frameworks. It ships as an OSGi bundle that can be dropped into any R4 framework, such as
Apache Felix or
Eclipse/Equinox.
Let's look at some examples, here the
service,
export,
iterable and methods are static imports:
import static org.ops4j.peaberry.Peaberry.service;
import static org.ops4j.peaberry.util.TypeLiterals.export;
import static org.ops4j.peaberry.util.TypeLiterals.iterable;
Injecting a stock quote service
@Inject
StockQuote quote;
...
bind(StockQuote.class).to(service(StockQuote.class).single());
Injecting many stock quote services
@Inject
Iterable quotes;
...
bind(iterable(StockQuote.class)).to(service(StockQuote.class).multiple());
Exporting an implementation as a stock quote service
@Inject
Export exportedQuote;
...
bind(export(StockQuote.class)).to(service(myQuoteImpl).export());
Watching for a stock quote service
@Inject
StockQuote quote;
...
// the watching scope is notified as stock services are added, modified, or removed
bind(StockQuote.class).to(service(StockQuote.class).out(watchingScopeImpl).single());
More examples can be found
here.
Please report any bugs on the
issues page, or feel free to join the discussion
group.
