match DSets and setting attributes. With the old behvaior, if a client subscribed to a DObject and
modified an OidList on it in a single pass, it could miss the modification. The DObject is
serialized immediately when the server gets the subscription request, but events aren't sent for
that subscription till it's processed the next time the omgr queue comes round.
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well in standalone mode. We need a way to install a director on registration.
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(not by its superclasses), we need to rise through its superclasses as well
in order to find the provider interface.
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ProjectXZoneRegistry extends a class that is a ZoneProvider...
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use JVM generated proxies, nix marshaller/dispatcher."
The idea was to use Proxy.newProxyInstance to magically create (at runtime)
proxies for FooService interfaces instead of generating a bunch of boilerplate
code. I figured something similar could be done for FooDispatcher on the server
side.
However, we also generate C++ and ActionScript marshallers, and those aren't
ever going away (AS might support some sort of dynamic magic to do what we
need, but C++ sure don't). So I decided to leave the marshaller side of things
as is.
I did revamp the dispatcher side of things to eliminate the need for
FooDispatcher on the server. This turned out not to even require the use of
something so magical as java.lang.reflect.Proxy, because in this case we're
just reading in method ids over the network (and arguments), and calling the
appropriate method. Such mundane activities are easily accomplished with the
regular reflection API.
The existing dispatcher stuff still works as well, of course, and though the
conversion from the old style to the new style is pretty simple:
< invmgr.registerDispatcher(new FooDispatcher(fooprov))
> invmgr.registerProvider(fooprov, FooMarshaller.class)
there's no burning need to convert things over. Fortunately, there's no
(compatibility) impact on client projects to converting Narya and Vilya, so
I'll be doing that shortly. There will be a miniscule performance impact, but I
think the cost of a single reflective method call, given that all of its
arguments were read and unmarshalled from the network, will be a good distance
south of immaterial.
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is a bad idea and will lead to pain. Nixed the one place where toArray was used
(which was a serous pig's breakfast itself).
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calls on the Java side, to match this added convenience we introduced to the
ActionScript side some time ago.
Before arms are raised into the air and waved like they really do care, bear
the following in mind:
Nothing will change at all on your project until you take some action to do so.
That action could include any of the following:
1. Continue to use narya-tools-1.2 to run genservice and you'll get the old
style "pass a Client reference for every service method invocation" marshallers
and you can continue to live happily in the past.
2. Leave some of your stuff un-regenerated, but generate new stuff using the
new tools and use the Client-reference-free style for new services. This is
likely to engender some PITA if you're trying to use both styles in the same
project because genservice just wants to operate on everything, but I offer it
as an option in case some other PITA motivates the tolerance of this
(presumably smaller) PITA.
3. Embrace the brave new world of simplicity and wield your good friend sed for
fun and profit:
(make necessary build.xml updates to start using narya-tools-1.4-SNAPSHOT)
% find src -name '*Service.java' | xargs sed -i 's:Client client, ::g'
(this will remove the Client argument from most of your services, some manual
fixes may be needed)
% ant genservice
% find src -name '*.java' | xargs sed -i 's:_ctx.getClient(), ::g'
(this will fix most of the places that pass a client reference into an
invocation service, some manual fixes will probably be needed)
I did this on Vilya and it magically took care of like 95% of the places where
changes were needed. The remaining half dozen changes were painless. Clearly
something like Yohoho vastly dwarfs Vilya in scope, but someone looking for an
hour or two of mindless typing to distract them on a lazy Sunday afternoon
would likely breeze through even that vast codebase without breaking a sweat.
Two more notes:
1. I'm going to switch Narya and Vilya over to the new style, and I'll be
fixing all the projects that use their services.
2. I lied (a teeny bit) about nothing changing. I made the old Client-taking
sendRequest methods deprecated, so projects that don't switch to the new style
will be presented with a large number of deprecation warnings. If this is too
terrible a burden to bear, I can remove the deprecation annotations on those
methods.
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us to create a Scala trait that handles reading and writing Scala "fields"
which are not public fields but are rather private fields with public getters
and setters. This also enables the creation of bridges for other JVM-hosted
non-Java languages.
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(Hope I'm not stepping on anyone's toes with this; I'm happy to revert if there are strong arguments against.)
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(Eclipse's auto-import-ordering makes it too easy for manually-added imports to get moved to a location where they'd be blown away by the task.)
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The easiest way to accomplish this, if you have a degree of control over your page, is with something like:
RootLayoutPanel.get().add(new ConfigEditorPanel(barHeight));
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Charlie Groves