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authorSimon MacMullen <simon@rabbitmq.com>2012-06-25 18:05:51 +0100
committerSimon MacMullen <simon@rabbitmq.com>2012-06-25 18:05:51 +0100
commite47bbfb289a388826b35f0adb6ffadfadda5ea20 (patch)
treec491d69f9aa3e2ead3252da1850f8df6dc05491b
parent070390731eff798b8c518f418cdacd35afb5a293 (diff)
downloadrabbitmq-server-e47bbfb289a388826b35f0adb6ffadfadda5ea20.tar.gz
Explain this a bit.
-rw-r--r--src/rabbit_exchange_decorator.erl10
1 files changed, 10 insertions, 0 deletions
diff --git a/src/rabbit_exchange_decorator.erl b/src/rabbit_exchange_decorator.erl
index bfb78201..b40ceda9 100644
--- a/src/rabbit_exchange_decorator.erl
+++ b/src/rabbit_exchange_decorator.erl
@@ -16,6 +16,16 @@
-module(rabbit_exchange_decorator).
+%% This is like an exchange type except that:
+%%
+%% 1) It applies to all exchanges as soon as it is installed, therefore
+%% 2) It is not allowed to affect validation, so no validate/1 or
+%% assert_args_equivalence/2
+%% 3) It also can't affect routing
+%%
+%% It's possible in the future we might relax 3), or even make these
+%% able to manipulate messages as they are published.
+
-ifdef(use_specs).
-type(tx() :: 'transaction' | 'none').