5.5 父子关系文档

Mappings and Text Analysis

• Configure an index that implements a parent/child relationship

如何检索

• image.png

• datatype属于join

示例

PUT my_index
{
  "mappings": {
    "properties": {
      "my_join_field": { 
        "type": "join",
        "relations": {
          "question": "answer" 
        }
      }
    }
  }
}

PUT my_index/_doc/1?refresh
{
  "text": "This is a question",
  "my_join_field": {
    "name": "question" 
  }
}

PUT my_index/_doc/2?refresh
{
  "text": "This is another question",
  "my_join_field": "question"
}


PUT my_index/_doc/3?routing=1&refresh=true
{
  "text": "This is an answer",
  "my_join_field": {
    "name": "answer", 
    "parent": "1" 
  }
}

PUT my_index/_doc/4?routing=1&refresh=true
{
  "text": "This is another answer",
  "my_join_field": {
    "name": "answer",
    "parent": "1"
  }
}

• name属性是写死的，不可变更，或者完全不写