ES基础（四十一）对象及Nested对象

DELETE blog
# 设置blog的 Mapping
PUT /blog
{
  "mappings": {
    "properties": {
      "content": {
        "type": "text"
      },
      "time": {
        "type": "date"
      },
      "user": {
        "properties": {
          "city": {
            "type": "text"
          },
          "userid": {
            "type": "long"
          },
          "username": {
            "type": "keyword"
          }
        }
      }
    }
  }
}


# 插入一条 Blog 信息
PUT blog/_doc/1
{
  "content":"I like Elasticsearch",
  "time":"2019-01-01T00:00:00",
  "user":{
    "userid":1,
    "username":"Jack",
    "city":"Shanghai"
  }
}


# 查询 Blog 信息
POST blog/_search
{
  "query": {
    "bool": {
      "must": [
        {"match": {"content": "Elasticsearch"}},
        {"match": {"user.username": "Jack"}}
      ]
    }
  }
}


DELETE my_movies

# 电影的Mapping信息
PUT my_movies
{
      "mappings" : {
      "properties" : {
        "actors" : {
          "properties" : {
            "first_name" : {
              "type" : "keyword"
            },
            "last_name" : {
              "type" : "keyword"
            }
          }
        },
        "title" : {
          "type" : "text",
          "fields" : {
            "keyword" : {
              "type" : "keyword",
              "ignore_above" : 256
            }
          }
        }
      }
    }
}


# 写入一条电影信息
POST my_movies/_doc/1
{
  "title":"Speed",
  "actors":[
    {
      "first_name":"Keanu",
      "last_name":"Reeves"
    },

    {
      "first_name":"Dennis",
      "last_name":"Hopper"
    }

  ]
}

# 查询电影信息
POST my_movies/_search
{
  "query": {
    "bool": {
      "must": [
        {"match": {"actors.first_name": "Keanu"}},
        {"match": {"actors.last_name": "Hopper"}}
      ]
    }
  }

}

DELETE my_movies
# 创建 Nested 对象 Mapping
PUT my_movies
{
      "mappings" : {
      "properties" : {
        "actors" : {
          "type": "nested",
          "properties" : {
            "first_name" : {"type" : "keyword"},
            "last_name" : {"type" : "keyword"}
          }},
        "title" : {
          "type" : "text",
          "fields" : {"keyword":{"type":"keyword","ignore_above":256}}
        }
      }
    }
}


POST my_movies/_doc/1
{
  "title":"Speed",
  "actors":[
    {
      "first_name":"Keanu",
      "last_name":"Reeves"
    },

    {
      "first_name":"Dennis",
      "last_name":"Hopper"
    }

  ]
}

# Nested 查询
POST my_movies/_search
{
  "query": {
    "bool": {
      "must": [
        {"match": {"title": "Speed"}},
        {
          "nested": {
            "path": "actors",
            "query": {
              "bool": {
                "must": [
                  {"match": {
                    "actors.first_name": "Keanu"
                  }},

                  {"match": {
                    "actors.last_name": "Hopper"
                  }}
                ]
              }
            }
          }
        }
      ]
    }
  }
}


# Nested Aggregation
POST my_movies/_search
{
  "size": 0,
  "aggs": {
    "actors": {
      "nested": {
        "path": "actors"
      },
      "aggs": {
        "actor_name": {
          "terms": {
            "field": "actors.first_name",
            "size": 10
          }
        }
      }
    }
  }
}


# 普通 aggregation不工作
POST my_movies/_search
{
  "size": 0,
  "aggs": {
    "NAME": {
      "terms": {
        "field": "actors.first_name",
        "size": 10
      }
    }
  }
}