[rules-dev] drools-repository and slf4j

I've just switched solver to use slf4j: http://jira.jboss.com/jira/browse/JBRULES-1233 I am advising to configure drools-repository and drools-jbrms's logging dependency's like this: <!-- Logging --> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <scope>test</scope> </dependency> They both need a directy dependency on slf4j-api, because you should only really on transitive dependencies if the only reason you need a transitive dependency is because one of your direct dependencies needs it. Since Logger is used directly, a direct dependency on slf4j-api should be put at scope compile. I don't think drools-repository/jbrms want to force their users to use log4j. But unless slf4j-log4j12 is put at test scope (or another scope with optional true) that is the case. Currently it's like this: we use a logging facade so you can log with anything, but we force you to use log4j anyway (luckily users could have excluded it meanwhile as a workaround). Maybe the log4j dependency is obsolete (as slf4j-log4j12 brings it in), but he solver examples use a domconfigurer directly, so at least solver needs it :/ PS: could we upgrade to the latest slf4j libs? We're at 1.3.0 and the latest is 1.4.3 http://www.mvnrepository.com/artifact/org.slf4j/slf4j-api For solver it shouldn't give a problem, maybe for drools-repository it will? -- With kind regards, Geoffrey De Smet