On Aug 26, 2011, at 6:40 AM, Julien Vermillard wrote:
> On Fri, Aug 26, 2011 at 3:24 PM, Alan D. Cabrera <[email protected]> wrote: >> >> On Aug 26, 2011, at 4:14 AM, Julien Vermillard wrote: >> >>> I modified the API to remove IoFilterChain. Now you are supposed to >>> give a list of filter to the service before starting it : >>> >>> // create the fitler chain for this service >>> List<IoFilter> filters = new ArrayList<IoFilter>(); >>> filters.add(new LoggingFilter("byte log filter")); >>> filters.add(new MyCodecFilter()); >>> filters.add(new LoggingFilter("pojo log filter")); >>> filters.add(newMyProtocolLogicFilter()); >>> >>> acceptor.setFilters(filters); >>> >>> acceptor.bind(...); >> >> >> How do we make chains where two filters feed into one or one filter feeds >> two filters? If you look in my sandbox we can accommodate this via: >> >> static import a.m.util.Util. linkParentWithChild; // to be written >> >> IoFilter foo = new FooFilter(); >> LinkStateFilter link = new LinkStateFilter(); >> IoFilter checksum = new ChecksumFilter(); >> IoFilter log = new LogFilter(); >> >> link.addLinkStateListener(foo); >> linkParentWithChild(foo, checksum); >> linkParentWithChild(link, checksum); >> linkParentWithChild(checksum, log); >> >> acceptor.setFilters(foo); >> > About the code in the sandbox : > http://svn.apache.org/repos/asf/mina/sandbox/adc/ahc/mina3/src/main/java/org/apache/mina/core/IoFilter.java > I see no IoFilter.addLinkStateListener(..) method, am I looking at the > right place ? Oops, it was meant to just be a sketch. :) > About the "filters feed into one or one filter feeds two filters", do > you have a concrete use case in mind for that ? >The above example does, Foo and the link state filter. I'm sure that we've >discussed this before. Another example is a mux/demux situation. How would >all of this fit into the grand scheme of >things? >Regards, >Alan On my side, besides the @ fsm declaration api (which may be impossible to use as i think it fixes the position of a filter in the chain which is not universal) i wrote a simple api i'd like your thoughts on (using the type of syntax used in hibernate criteria) : FSMState init = getInitialState(); FSMState b = init.linksTo(FSMStateB.class); b.linksTo(FSMStateZ.class); FSMState d = b.linksTo(FSMStateC.class).linksTo(FSMStateD.class); d.linksTo(FSMStateE.class); d.linksTo(FSMStateF.class); which represents obviously : INIT -> B -> Z |-> C -> D -> E |-> F wdyt ?
