Re: [hibernate-dev] [infinispan-dev] Possible error of dependency on infinispan-query pom

Galder Zamarreño wrote: > Hmmm, these looks like a problem in Hibernate Search since they're the > ones using slf4j. > > I don't see why Infinispan Query should explicitly declare a > dependency on slf4j. > Hello Galder, The issue reported by Israel Lacerra, that is the NoClassDefFoundError for org.slf4j.impl.StaticLoggerBinder, no longer occurs in SLF4J 1.6 and later. Upgrading to SLF4J v1.6 will cause the problem to disappear. Quoting the SLF4J manual [1]: Libraries Authors of widely-distributed components and libraries may code against the SLF4J interface in order to avoid imposing an logging framework on the end-user of the component or library. He or she may choose the desired logging framework at deployment time by inserting the desired slf4j binding on the classpath, which may be changed later by replacing an existing binding with another on the class path and restarting the application. This approach has proven to be simple and very robust. As of SLF4J version 1.6.0, if no binding is found on the class path, then slf4j-api will default to a no-operation implementation discarding all log requests. Thus, instead of throwing an exception, SLF4J will emit a single warning message about the absence of a binding and proceed to discard all log requests without further protest. For example, let Wombat be some biology-related framework depending on SLF4J for logging. In order to avoid imposing a logging framework on the end-user, Wombat's distribution includes slf4j-api.jar but no binding. Even in the absence of any SLF4J binding on the class path, Wombat's distribution will still work out-of-the-box, and without requiring the end-user to download a binding from SLF4J's web-site. Only when the end-user wishes to enable logging will she need to install a binding. I hope this sheds lights onto the matter, -- Ceki [1] http://slf4j.org/manual.html#libraries _______________________________________________ hibernate-dev mailing list hibernate-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/hibernate-dev