riak search
现在search查询还是空
Simon 11:53:44
这数据库太新，不好把握，还是用成熟一点的比较好吧
建完bucket，附带了precommit属性，才会建索引
之前的数据是查不出的
Simon 11:54:59
索引里面没有
建索引的时候不会遍历老数据
Android郎哲<langxianzhe@163.com> 11:55:30
我发你我创建的过程你看看，哪里不对
Android郎哲<langxianzhe@163.com> 11:57:56
步
Client:set_bucket(<<"g2">>,[{precommit, [{struct,[{<<"mod">>,<<"riak_search_kv_hook">>},{<<"fun">>,<<"precommit">>}]}]}]).
第二步
f(O0),O0 = riak_object:new(<<"g2">>, <<"mine">>, <<"bread">>).
第三步
(riak@127.0.0.1)108> C:put(O0).
ok
我的理解是以上三步就可以完成了
Android郎哲<langxianzhe@163.com> 11:59:36
以下是执行
search的结果
(riak@127.0.0.1)109> search:search_doc(<<"g2">>, <<"bread">>)
(riak@127.0.0.1)109> .
{1,"0.353553",
[{riak_idx_doc,<<"g2">>,<<"mine">>,
[{<<"value">>,<<"bread">>,[{<<"bread">>,[0]}]}],
[],[],true}]}
(riak@127.0.0.1)110> search:search_doc(<<"g2">>, <<"bre">>)
(riak@127.0.0.1)110> .
{0,"0.0",[]}
(riak@127.0.0.1)111> search:search_doc(<<"g2">>)
(riak@127.0.0.1)111> .
{0,"0.0",[]}
(riak@127.0.0.1)112> search:search(<<"g2">>, <<"bread">>)
(riak@127.0.0.1)112> .
{1,
[{<<"g2">>,<<"mine">>,
[{p,[0]},{score,0.35355339059327373}]}]}
(riak@127.0.0.1)113> search:search(<<"g2">>, "bread")
(riak@127.0.0.1)113> .
{1,
[{<<"g2">>,<<"mine">>,
[{p,[0]},{score,0.35355339059327373}]}]}
(riak@127.0.0.1)114> search:search(<<"g2">>, "bre")
(riak@127.0.0.1)114> .
{0,[]}
(riak@127.0.0.1)115> search:search(<<"g2">>)
(riak@127.0.0.1)115> .
{0,[]}
Android郎哲<langxianzhe@163.com> 12:01:15
为什么 search:search(<<"g2">>)和search:search_doc(<<"g2">>) 返回是空的
Simon 12:01:46
不是已经能查出来了吗
(riak@127.0.0.1)112> search:search(<<"g2">>, <<"bread">>)
(riak@127.0.0.1)112> .
{1,
[{<<"g2">>,<<"mine">>,
[{p,[0]},{score,0.35355339059327373}]}]}
Android郎哲<langxianzhe@163.com> 12:02:44
这个是根据具体的key查出来的，模糊的key还查不出来
Simon 12:03:02
模糊查询？
Android郎哲<langxianzhe@163.com> 12:03:07
对
这个不是全文检索功能吗
Simon 12:03:45
试试<<"bre*">>
Android郎哲<langxianzhe@163.com> 12:04:54
<<"bre*">>
可以查出
<<"*re*">>查不出
Simon 12:05:26
我想起来了，反向索引就是用bread这个值建了一个key
Android郎哲<langxianzhe@163.com> 12:05:41
什么意思请详解
Simon 12:05:54
然后把值为bread的key当成一个列表存起来
底层原理就是这样
Android郎哲<langxianzhe@163.com> 12:07:48
你是说它把存储的value当做key索引存储了一边
Simon 12:07:58
让我哭的就是，你想查出值为bread的所有记录，他只是返回key列表，你还得根据这个列表挨个找出value
是的
Android郎哲<langxianzhe@163.com> 12:09:05
再根据Key查找value也好，
<<*re*>>
查不出来如何解释
Simon 12:12:32
一个桶的底层存储结构是这样：
key value
{key, <<"g2">>, <<"mine">>} <<"bread">>
{key, <<"g2">>, <<"you">>} <<"bread">>
{index, <<"g2">>, <<"bread">>} [<<"mine">>,<<"you">>]
只是示意一下，实际的你得看key的组成规则
Android郎哲<langxianzhe@163.com> 12:15:10
嗯明白
Android郎哲<langxianzhe@163.com> 12:16:24
search:search(<<"g2">>)查询为什么查询不到索引呢， 现在仍然是空
(riak@127.0.0.1)144> search:search(<<"g2">>).
{0,[]}
-----26> riakc_pb_socket:search(Pid,<<"g2">>, list_to_binary("<<\"orange\">>:<<\"bread\">>"),[],5000).
{ok,{search_results,[{<<"g2">>,
[{<<"id">>,<<"mine">>},{<<"value">>,<<"bread">>}]},
{<<"g2">>,
[{<<"id">>,<<"your">>},{<<"value">>,<<"orange">>}]}],
0.07724899798631668,2}}
27>
27> riakc_pb_socket:search(Pid,<<"g2">>, list_to_binary("<<\"orange\">><<\"bread\">>"),[],5000).
{ok,{search_results,[{<<"g2">>,
[{<<"id">>,<<"mine">>},{<<"value">>,<<"bread">>}]},
{<<"g2">>,
[{<<"id">>,<<"your">>},{<<"value">>,<<"orange">>}]}],
0.07724899798631668,2}}
* 2: syntax error before: '.'
35> riakc_pb_socket:search(Pid,<<"g2">>, list_to_binary("orangebread"),[],5000).
{ok,{search_results,[],0.0,0}}
36> riakc_pb_socket:search(Pid,<<"g2">>, list_to_binary("orange\"\"bread"),[],5000).
{ok,{search_results,[{<<"g2">>,
[{<<"id">>,<<"mine">>},{<<"value">>,<<"bread">>}]},
{<<"g2">>,
[{<<"id">>,<<"your">>},{<<"value">>,<<"orange">>}]}],
0.2959290146827698,2}}
53> riakc_pb_socket:search(Pid,<<"g2">>, "br*\"\"or*").
{ok,{search_results,[{<<"g2">>,
[{<<"id">>,<<"mine">>},{<<"value">>,<<"bread">>}]},
{<<"g2">>,
[{<<"id">>,<<"your">>},{<<"value">>,<<"orange">>}]}],
0.0,2}}
54>
73> riakc_pb_socket:search(Pid,<<"g2">>, HerBin).
{ok,{search_results,[{<<"g2">>,
[{<<"id">>,<<"her">>},
{<<"value">>,
<<131,108,0,0,0,2,104,2,107,0,4,110,97,109,101,107,0,
2,...>>}]}],
0.35355299711227417,1}}
74> HerBin.
<<131,108,0,0,0,2,104,2,107,0,4,110,97,109,101,107,0,2,
120,119,104,2,107,0,1,115,107,0,1,...>>
75> binary_to_term(HerBin).
[{"name","xw"},{"s","d"}]
76> riakc_pb_socket:search(Pid,<<"g2">>, HerBin).
{ok,{search_results,[{<<"g2">>,
[{<<"id">>,<<"her">>},
{<<"value">>,
<<131,108,0,0,0,2,104,2,107,0,4,110,97,109,101,107,0,
2,...>>}]}],
0.35355299711227417,1}}
77>
--------------------------------
(riak@127.0.0.1)43> lucene_scan:string("name:jason").
{ok,[{string,1,"name"},{scope,1,":"},{string,1,"jason"}],1}
(riak@127.0.0.1)45> lucene_scan:string("namejason*").
{ok,[{wildcard_glob,1,"namejason*"}],1}
[{'query',[{wildcard_glob,1,"namejason*"}]}, {'filter', []}];
[{'query', QueryOps}, {'filter', FilterOps}];
-----------------------------9> riakc_pb_socket:put(Pid,O).
ok
50> riakc_pb_socket:list_buckets(Pid).
{ok,[<<"user">>]}
51> riakc_pb_socket:set_bucket(Pid, <<"user">>, [{precommit, [{struct,[{<<"mod">>,<<"riak_search_kv_hook">>},{<<"fun">>,<<"precommit">>}]}]}]).
ok
52> riakc_pb_socket:list_buckets(Pid).
{ok,[<<"user">>]}
53> f(O),O=riakc_obj:new(<<"user">>, <<"jason">>, list_to_binary("[{\"name\":\"jason\"},{\"sex\":\"male\"}]"), "application/json").
{riakc_obj,<<"user">>,<<"jason">>,undefined,[],
{dict,1,16,16,8,80,48,
{[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],...},
{{[],[],[],[],[],[],[],[],[],[],[[<<...>>|...]],[],[],...}}},
<<"[{\"name\":\"jason\"},{\"sex\":\"male\"}]">>}
54> riakc_pb_socket:put(Pid,O).
ok
55> riakc_pb_socket:list_buckets(Pid).
{ok,[<<"user">>]}
56> riakc_pb_socket:set_bucket(Pid, <<"user">>, [{precommit, [{struct,[{<<"mod">>,<<"riak_search_kv_hook">>},{<<"fun">>,<<"precommit">>}]}]}]).
ok
57> riakc_pb_socket:set_bucket(Pid, <<"users">>, [{precommit, [{struct,[{<<"mod">>,<<"riak_search_kv_hook">>},{<<"fun">>,<<"precommit">>}]}]}]).
ok
58> f(O),O=riakc_obj:new(<<"users">>, <<"jason">>, list_to_binary("[{\"name\":\"jason\"},{\"sex\":\"male\"}]"), "application/json").
{riakc_obj,<<"users">>,<<"jason">>,undefined,[],
{dict,1,16,16,8,80,48,
{[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],...},
{{[],[],[],[],[],[],[],[],[],[],[[<<...>>|...]],[],[],...}}},
<<"[{\"name\":\"jason\"},{\"sex\":\"male\"}]">>}
59> riakc_pb_socket:put(Pid,O).
ok
60> f(O),O=riakc_obj:new(<<"user2">>, <<"jason">>, list_to_binary("[{\"name\":\"jason\"},{\"sex\":\"male\"}]"), "application/json").
{riakc_obj,<<"user2">>,<<"jason">>,undefined,[],
{dict,1,16,16,8,80,48,
{[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],...},
{{[],[],[],[],[],[],[],[],[],[],[[<<...>>|...]],[],[],...}}},
<<"[{\"name\":\"jason\"},{\"sex\":\"male\"}]">>}
61> riakc_pb_socket:put(Pid,O).
ok
62> riakc_pb_socket:search(Pid, <<"users">>, "sdf").
{ok,{search_results,[],0.0,0}}
63> riakc_pb_socket:search(Pid, <<"users">>, "name:jason").
{ok,{search_results,[],0.0,0}}
64> riakc_pb_socket:search(Pid, <<"users">>, <<"name:jason">>).
{ok,{search_results,[],0.0,0}}
65> riakc_pb_socket:search(Pid, <<"users">>, "\"name\":\"jason\"").
{ok,{search_results,[],0.0,0}}
66> riakc_pb_socket:search(Pid, <<"users">>, list_to_binary("\"name\":\"jason\"")).
{ok,{search_results,[],0.0,0}}
67> riakc_pb_socket:search(Pid, <<"user3">>, list_to_binary("\"name\":\"jason\"")).
{ok,{search_results,[],0.0,0}}
68> riakc_pb_socket:search(Pid, <<"user2">>, list_to_binary("\"name\":\"jason\"")).
{ok,{search_results,[{<<"user2">>,
[{<<"id">>,<<"jason">>},
{<<"name">>,<<"jason">>},
{<<"sex">>,<<"male">>}]}],
0.35355299711227417,1}}
69> riakc_pb_socket:search(Pid, <<"user2">>, list_to_binary("\"sex\":\"male\"")).
{ok,{search_results,[{<<"user2">>,
[{<<"id">>,<<"jason">>},
{<<"name">>,<<"jason">>},
{<<"sex">>,<<"male">>}]}],
0.35355299711227417,1}}
70> riakc_pb_socket:search(Pid, <<"users">>, "\"name\":\"jason\"").
{ok,{search_results,[],0.0,0}}
71> riakc_pb_socket:search(Pid, <<"user2">>, list_to_binary("\"name\":\"jason\"")).
{ok,{search_results,[{<<"user2">>,
[{<<"id">>,<<"jason">>},
{<<"name">>,<<"jason">>},
{<<"sex">>,<<"male">>}]}],
0.35355299711227417,1}}
72> riakc_pb_socket:search(Pid, <<"user2">>, list_to_binary("\"sex\":\"male\"")).
{ok,{search_results,[{<<"user2">>,
[{<<"id">>,<<"jason">>},
{<<"name">>,<<"jason">>},
{<<"sex">>,<<"male">>}]}],
0.35355299711227417,1}}
73> riakc_pb_socket:search(Pid, <<"user2">>, list_to_binary("\"sex\":\"mal*\"")).
{ok,{search_results,[],0.0,0}}
74> riakc_pb_socket:search(Pid, <<"user2">>, list_to_binary("\"sex\":\"male\"")).
{ok,{search_results,[{<<"user2">>,
[{<<"id">>,<<"jason">>},
{<<"name">>,<<"jason">>},
{<<"sex">>,<<"male">>}]}],
0.35355299711227417,1}}
sss
-----------------------------------------------模糊匹配查询-------------------------------------------
(ejabberd@meta)56> riakc_pb_socket:search(Pid, <<"user1">>, list_to_binary("\"name\":\"jaso*\"")).
{ok,{search_results,[],0.0,0}}
(ejabberd@meta)57> riakc_pb_socket:search(Pid, <<"user1">>, list_to_binary("\"name\":jason*")).
{ok,{search_results,[{<<"user1">>,
[{<<"id">>,<<"jason">>},
{<<"name">>,<<"jason">>},
{<<"sex">>,<<"male">>}]}],
0.0,1}}
(ejabberd@meta)58> riakc_pb_socket:search(Pid, <<"user1">>, list_to_binary("\"name\":ja*")).
{ok,{search_results,[{<<"user1">>,
[{<<"id">>,<<"jason">>},
{<<"name">>,<<"jason">>},
{<<"sex">>,<<"male">>}]}],
0.0,1}}
(ejabberd@meta)59> riakc_pb_socket:search(Pid, <<"user1">>, list_to_binary("\"name\":*")).
{ok,{search_results,[],0.0,0}}
(ejabberd@meta)60> riakc_pb_socket:search(Pid, <<"user1">>, list_to_binary("\"name\":j*")).
{ok,{search_results,[],0.0,0}}
(ejabberd@meta)61> riakc_pb_socket:search(Pid, <<"user1">>, list_to_binary("\"name\":ja*")).
{ok,{search_results,[{<<"user1">>,
[{<<"id">>,<<"jason">>},
{<<"name">>,<<"jason">>},
{<<"sex">>,<<"male">>}]}],
0.0,1}}
(ejabberd@meta)62>
---------------------------------------
riak search 查询中文问题，查了好多资料也没有解决，后我不得不把所有字段用base64来编码，查询也是把条件编码完在查询的
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版权声明：本文为CSDN博主「langxianwu」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/langxianwu/article/details/84298759
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