45.mapping建立、修改

主要知识点

1、如何建立索引

2、修改mapping

3、测试mapping

 
 

 
 

一、如何建立索引

语法

PUT /website

{

"mappings": {

"article": {

"properties": {

"author_id": {

"type": "long",

"index":"anaalyzed"

},

}

}

analyzed 分词

not_analyzed 不分词

no 不能被索引和搜索

 
 

二、修改mapping

 
 

只能创建index时手动建立mapping，或者新增field mapping，不能update field mapping（也就是不能修改已创建好的field的mapping）

 
 

1、先插入一个index

PUT /website

{

"mappings": {

"article": { #--->type

"properties": {

"author_id": { # ---->field

"type": "long"

},

"title": { # ---->field

"type": "text",

"analyzer": "english"

},

"content": { # ---->field

"type": "text"

},

"post_date": { # ---->field

"type": "date"

},

"publisher_id": { # ---->field

"type": "text",

"index": "not_analyzed"

}

}

}

}

}

 
 

2、修改已存在的field的type

PUT /website

{

"mappings": {

"article": {

"properties": {

"author_id": {

"type": "text"

}

}

}

}

}

执行结果是：

{

"error": {

"root_cause": [

{

"type": "index_already_exists_exception",

"reason": "index [website/co1dgJ-uTYGBEEOOL8GsQQ] already exists",

"index_uuid": "co1dgJ-uTYGBEEOOL8GsQQ",

"index": "website"

}

],

"type": "index_already_exists_exception",

"reason": "index [website/co1dgJ-uTYGBEEOOL8GsQQ] already exists",

"index_uuid": "co1dgJ-uTYGBEEOOL8GsQQ",

"index": "website"

},

"status": 400

}

3、插入新的field，并指定mapping

PUT /website/_mapping/article

{

"properties" : {

"new_field" : {

"type" : "string",

"index": "not_analyzed"

}

}

}

 
 

三、测试mapping

1、测试可分词

GET /website/_analyze

{

"field": "content",

"text": "my-dogs"

}

2、测试不可分词

GET website/_analyze

{

"field": "new_field",

"text": "my dogs"

}

执行结果是：

{

"error": {

"root_cause": [

{

"type": "remote_transport_exception",

"reason": "[4onsTYV][127.0.0.1:9300][indices:admin/analyze[s]]"

}

],

"type": "illegal_argument_exception",

"reason": "Can't process field [new_field], Analysis requests are only supported on tokenized fields"

},

"status": 400

}