Is it possible to inject CDI beans into RPC Services?
Yes. What this comes down to is injecting a CDI bean into a Servlet which is supported by Weld.
For GWT's development you need to add a jetty-web.xml as described here http://docs.jboss.org/weld/reference/1.1.0.Final/en-US/html_single/#d0e5286 to enable Servlet injection.
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