sunspot使用(1)

**sunspot使用**
=================================

1. gemfile
     add gem 'sunspot_rails' to the gemfile
2. excute bundle install
3. generate sunspot config file, generate config/sunspot.yml
    generate solr config files in the root path
     rails g sunspot_rails:install
    rake sunspot:solr:start
    rake sunspot:solr:run

察看solr服务： http://127.0.0.1:8982/solr/

---------------------------------------------------------------------------
5. 在modle中设置索引

class Article < ActiveRecord::Base
  attr_accessible :content, :name, :published_at
  has_many :comments

  searchable do
      text :name, :content
  end

end


服务器建立索引：rake sunspot:reindex
-----------------------------------------------------------------------------
$ :~/github/test_sunspot/solr/data/development/index$ ls -lh
总用量 40K
-rw-rw-r-- 1 zhaol-a zhaol-a   69 11月  4 21:43 _0.fdt
-rw-rw-r-- 1 zhaol-a zhaol-a   44 11月  4 21:43 _0.fdx
-rw-rw-r-- 1 zhaol-a zhaol-a   53 11月  4 21:43 _0.fnm
-rw-rw-r-- 1 zhaol-a zhaol-a  376 11月  4 21:43 _0.frq
-rw-rw-r-- 1 zhaol-a zhaol-a   14 11月  4 21:43 _0.nrm
-rw-rw-r-- 1 zhaol-a zhaol-a  460 11月  4 21:43 _0.prx
-rw-rw-r-- 1 zhaol-a zhaol-a   48 11月  4 21:43 _0.tii
-rw-rw-r-- 1 zhaol-a zhaol-a 1.7K 11月  4 21:43 _0.tis
-rw-rw-r-- 1 zhaol-a zhaol-a  266 11月  4 21:43 segments_2
-rw-rw-r-- 1 zhaol-a zhaol-a   20 11月  4 21:43 segments.gen


打开文件 /usr/local/solr/solr.xml
这里配置index目录
-------------------------------------------------------------

<?xml version="1.0" encoding="UTF-8" ?>
<solr persistent="true">
  <cores adminPath="/admin/cores" defaultCoreName="core">
    <core name="core" instanceDir="core/"/>
    <core name="core_0" instanceDir="core_0/" dataDir="core_0_idx_data"/>
    <core name="core_code_search" instanceDir="core_code_search/"/>
  </cores>
</solr>

config/sunspot.yml配置如下：
前台使用的是core_0, 配置为path: /solr/core_0
-------------------------------------------------------------------------
production:
  solr:
    hostname: 192.168.1.80
    port: 8983
    log_level: WARNING

development:
  solr:
    hostname: 192.168.133.51
    port: 8081
    path: /solr/core_0
    log_level: INFO

test:
  solr:
    hostname: 192.168.22.80
    port: 8983
    log_level: INFO

打开文件 /usr/local/solr/core_0/conf/data-config.xml
----------------------------------------------------------------

<dataConfig>
#数据库链接配置：
<dataSource driver="org.postgresql.Driver"  url="jdbc:postgresql://192.168.11.124/gxx:5432"  user="gcj" password="xx" transactionIsolation="TRANSACTION_READ_COMMITTED" holdability="CLOSE_CURSORS_AT_COMMIT"/>

modle配置：
--------------------------------------------------------------------------
class GuidePrice < ActiveRecord::Base

  searchable do
      text :name, :stored => true
        text :sepecification, :stored => true
        text :search_key
      integer :id, :stored => true
      string :location_area_code, :stored => true
      integer :base_material_type_id, :stored => true
      integer :guide_price_package_material_id , :stored => true#trend
      integer :year, :stored => true
      integer :month, :stored => true
      float :price, :stored => true
      string :unit, :stored => true
      string :code, :stored => true
      string :term_status, :stored => true #finish
      string :guide_price_package_material_status, :stored => true #finish

  end

end
-----------------------------------------------------------------------------------------

#创建索引：
对应schame.xml文件配置data-config.xml， name命名规则配置如下
查询的注意设置：class_name, base_class_name对应的modle

** 'GuidePrice' class_name, 'ActiveRecord::Base' base_class_name**
** class GuidePrice < ActiveRecord::Base**

*_s == store #store
*_i == 字段类型为integer
*_is == 字段类型为integer, store="true"
*_ss == 字段类型为string, store="true"
*_texts == 字段类型为text, store="true"
...
注意: *_s 的store="false"
------------------------------------------------------------------
<document>
<entity name="guide_prices" pk="id" query="select 'GuidePrice'||' '||id as class_id, 'GuidePrice' class_name, 'ActiveRecord::Base' base_class_name, name, sepecification, location_area_code, base_material_type_id, guide_price_package_material_id, year, month, price, unit, code, term_status, guide_price_package_material_status from guide_prices_view">
<field column="class_id" name="id" />
<field column="class_name" name="class_name" />
<field column="guide_price_package_material_status" name="guide_price_package_material_status_ss" />
</entity>
</document>


===========================================
注意定义searchable
**正确写法**
在索引中可以正常保存name 和content信息
```ruby
class Article < ActiveRecord::Base

  searchable do
      text :content, :stored => true
      text :name,  :stored => true
  end

end
```


**错误写法**
content不能被保存在索引中
```ruby
class Article < ActiveRecord::Base

  searchable do
      text :name, :content, stored => true
  end

end
```
===========================================

当访问：http://0.0.0.0:3000/articles?search=百度 时，转发给solr服务器进行搜索

SOLR Request (10.9ms)  [

path=#<RSolr::Client:0xb5fb38c0>
parameters={
data: fq=type%3AArticle&q=%E7%99%BE%E5%BA%A6&fl=%2A+score&qf=name_text+content_text&defType=dismax&start=0&rows=30, method: post,
params: {:wt=>:ruby},
query: wt=ruby,
headers: {"Content-Type"=>"application/x-www-form-urlencoded; charset=UTF-8"},
path: select,
uri: http://localhost:8982/solr/select?wt=ruby,
open_timeout: ,
read_timeout: ,
retry_503: ,
retry_after_limit: }

]
http://localhost:8982/solr/select?wt=ruby&fq=type%3AArticle&q=%E7%99%BE%E5%BA%A6&fl=*+score&qf=name_text+content_text&defType=dismax&start=0&rows=30

**uri + data**
{'responseHeader'=>{
    'status'=>0,
    'QTime'=>10,
    'params'=>{
        'fl'=>'* score',
        'start'=>'0',
        'q'=>'百度','
        qf'=>'name_text content_text',
        'wt'=>'ruby',
        'fq'=>'type:Article',
        'defType'=>'dismax',
        'rows'=>'30'}
    },
'response'=>{
    'numFound'=>4,
     'start'=>0,
    'maxScore'=>2.1419475,
    'docs'=>[
        {'id'=>'Article 4','score'=>2.1419475},
        {'id'=>'Article 3','score'=>0.43654194},
        {'id'=>'Article 1','score'=>0.42706013},
        {'id'=>'Article 2','score'=>0.33079934}
    ]
}}


solr结构图：
------------------------------------------------------------------------------------
.
├── conf
│   ├── admin-extra.html
│   ├── elevate.xml
│   ├── mapping-ISOLatin1Accent.txt
│   ├── protwords.txt
│   ├── schema.xml
│   ├── scripts.conf
│   ├── solrconfig.xml
│   ├── spellings.txt
│   ├── stopwords.txt
│   └── synonyms.txt
├── data
│   └── development
│       ├── index
│       │   ├── _4.fdt
│       │   ├── _4.fdx
│       │   ├── _4.fnm
│       │   ├── _4.frq
│       │   ├── _4.nrm
│       │   ├── _4.prx
│       │   ├── _4.tii
│       │   ├── _4.tis
│       │   ├── segments_6
│       │   └── segments.gen
│       └── spellchecker
│           ├── segments_1
│           └── segments.gen
└── pids
    └── development
        └── sunspot-solr-development.pid