[CONF] Apache Felix > RFC 147 Overview

[confluence]

RFC 147 Overview Page added by Derek Baum RFC-147 Overview The RFC-147 draft is not yet publicly available. It used to be called RFC-132, which can be found about 40% into http://www.osgi.org/download/osgi-4.2-early-draft.pdf This is an overview of its main features: Standard way to implement and run commands for any OSGi 4.2 framework Standard way to implement and run commands for any OSGi 4.2 framework Commands are registered via service attributes, you don't have to register a specific service. This allows commands to be registered by existing services, just by adding the new attributes: Dictionary<String, Object> dict = new Hashtable<String, Object>(); dict.put(CommandProcessor.COMMAND_SCOPE, "shell"); dict.put(CommandProcessor.COMMAND_FUNCTION, new String[] {"sleep", "grep"}); context.registerService(name, service, dict); Scope is used to provide a namespace for commands. The commands above can be invoked as "shell:sleep" and "shell:grep". If the scope is omitted (e.g. "sleep" and "grep") then the first matching command is invoked. Commands can have any signature - arguments are coerced to call the best matching method using reflection. A CommandSession argument is inserted if required: public void sleep(long millis) throws InterruptedException{ Thread.sleep(millis); } public void sleep(String[] args) throws Exception; public boolean grep(CommandSession session, String[] args) throws Exception; The CommandSession interface provides methods for executing commands and getting and setting session variables: public interface org.osgi.service.command.CommandSession { Object execute(CharSequence commandline) throws Exception; Object get(String name); void put(String name, Object value); ... } Change Notification Preferences View Online | Add Comment