#EUC 2014 Riak Tutorial

##Cluster set-up The sample code requires a bucket type called 'maps' to be created for holding CRDT maps. This can be done as follows:

$ rel/riak/bin/riak-admin bucket-type create maps '{"props":{"datatype":"map"}}'
maps created

$ rel/riak/bin/riak-admin bucket-type activate maps
maps has been activated

##Compiling the example The example requires access to the latest version of the riak-erlang-client. Once this has been compiled, the paths in the start_shell.sh script need to be adjusted.

Compile the euc_tutorial.erl file.

##Running the examples Start an Erlang shell using the start_shell.sh script.

Eshell V5.9.1  (abort with ^G)
1> {ok, State} = euc_tutorial:init().
{ok,{state,"127.0.0.1",8087,<<"maps">>,<<"posts">>,
           <<"thread_index">>,<<"post_index">>,<0.33.0>}}
2> euc_tutorial:insert_post(State, <<"P1">>, <<"[email protected]">>,<<"SUBJECT">>, <<"BODY">>, {{2014,5,15},{0,0,0}}).
ok
3> euc_tutorial:insert_post(State, <<"P2">>, <<"[email protected]">>, <<"RE: SUBJECT">>, <<"RESPONSE BODY">>, {{2014,5,15},{0,0,0}}, <<"P1">>).
ok
4> euc_tutorial:insert_post(State, <<"P3">>, <<"[email protected]">>, <<"RE: SUBJECT">>, <<"RESPONSE BODY 2">>, {{2014,5,16},{0,0,0}}, <<"P1">>).
ok
5> euc_tutorial:insert_post(State, <<"P4">>, <<"[email protected]">>, <<"RE: SUBJECT">>, <<"RESPONSE BODY 3">>, {{2014,5,17},{0,0,0}}, <<"P2">>).
ok
6> euc_tutorial:get_post(State, <<"P1">>).
{root,<<"P1">>,<<"P1">>,<<"[email protected]">>,
  <<"SUBJECT">>,<<"BODY">>,<<"2014-05-15T00:00:00.000Z">>}
7> euc_tutorial:get_post(State, <<"P2">>).
{response,<<"P2">>,<<"P1">>,<<"[email protected]">>,
      <<"RE: SUBJECT">>,<<"RESPONSE BODY">>,
      <<"2014-05-15T00:00:00.000Z">>,<<"P1">>}
8> euc_tutorial:get_thread(State, <<"P1">>).
[{root,<<"P1">>,<<"P1">>,<<"[email protected]">>,
   <<"SUBJECT">>,<<"BODY">>,<<"2014-05-15T00:00:00.000Z">>},
 {response,<<"P2">>,<<"[email protected]">>,<<"RE: SUBJECT">>,
       <<"2014-05-15T00:00:00.000Z">>,<<"P1">>},
 {response,<<"P3">>,<<"[email protected]">>,<<"RE: SUBJECT">>,
       <<"2014-05-16T00:00:00.000Z">>,<<"P1">>},
 {response,<<"P4">>,<<"[email protected]">>,<<"RE: SUBJECT">>,
       <<"2014-05-17T00:00:00.000Z">>,<<"P2">>}]
9> euc_tutorial:get_threads_by_date(State, {{2014,5,15},{0,0,0}}).
[{<<"P1">>,<<"[email protected]">>,<<"SUBJECT">>,
  <<"2014-05-15T00:00:00.000Z">>}]
10> euc_tutorial:get_threads_by_date(State, {{2014,5,16},{0,0,0}}).
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