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http://issues.apache.org/bugzilla/show_bug.cgi?id=38912 Summary: Add Service class to locate SPI implementations Product: Commons Version: unspecified Platform: Other OS/Version: other Status: NEW Severity: enhancement Priority: P2 Component: Lang AssignedTo: [email protected] ReportedBy: [EMAIL PROTECTED] The "service locator" pattern was first defined/documented in java 1.3. This pattern allows code to locate a concrete implementation of some specific interface, eg locate implementations of the cryptograpy API. This is of use to any code that supports "plugin" implementations. The pattern is quite simple; a jarfile provides a concrete implementation of an interface (or abstract base class), and includes a file META-INF/services/fully.qualified.interface.name where the file contains the name of the concrete implementation. Java 1.6 finally introduces a standard API which implements service lookup using this pattern, java.util.Service. It would be nice to have an implementation in Lang for code that wants to use this standard pattern but cannot depend on java 1.6. http://download.java.net/jdk6/docs/api/java/util/Service.html An implementation of this pattern currently exists here, though it was written without knowing that java.util.Service exists so the interface may change: http://svn.apache.org/repos/asf/jakarta/commons/proper/logging/contrib/simon/jcl2/core/java/org/apache/commons/logging/Utils.java http://svn.apache.org/repos/asf/jakarta/commons/proper/logging/contrib/simon/jcl2/core/ The commons-discovery project may also have an implementation of this pattern. -- Configure bugmail: http://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
