搜索包含空格的名称（文本），给我带来问题，
我有类似的映射
"{"user":{"properties":{"name":{"type":"string"}}}}"
理想情况下它应返回并按如下方式对结果进行排名
1) Bring on top names that exact match the search term (highest score)
2) Names that starts with the search term (high score)
3) Names that contains the exact search term as substring (medium score)
4) Names that contains any of the search term token (lowest score)
例
对于elasticsearch中的以下名称
Maaz Tariq
Ahmed Maaz Tariq
Maaz Sheeba
Maaz Bin Tariq
Sana Tariq
Maaz Tariq Ahmed
搜索“Maaz Tariq”，结果应按以下顺序排列
Maaz Tariq (highest score)
Maaz Tariq Ahmed (high score)
Ahmed Maaz Tariq (medium score)
Maaz Bin Tariq (lowest score)
Maaz Sheeba (lowest score)
Sana Tariq (lowest score)
任何人都可以指出我如何使用和使用哪种分析仪？以及如何对名称的搜索结果进行排名？
你可以使用 多字段类型， 一个 布尔查询 和 自定义提升因子查询 解决这个问题。
制图：
{
"mappings" : {
"user" : {
"properties" : {
"name": {
"type": "multi_field",
"fields": {
"name": { "type" : "string", "index": "analyzed" },
"exact": { "type" : "string", "index": "not_analyzed" }
}
}
}
}
}
}
查询：
{
"query": {
"bool": {
"must": [
{
"match": {
"name": "Maaz Tariq"
}
}
],
"should": [
{
"custom_boost_factor": {
"query": {
"term": {
"name.exact": "Maaz Tariq"
}
},
"boost_factor": 15
}
},
{
"custom_boost_factor": {
"query": {
"prefix": {
"name.exact": "Maaz Tariq"
}
},
"boost_factor": 10
}
},
{
"custom_boost_factor": {
"query": {
"match_phrase": {
"name": {
"query": "Maaz Tariq",
"slop": 0
}
}
},
"boost_factor": 5
}
}
]
}
}
}
编辑：
正如javanna指出的那样 custom_boost_factor 不需要。
查询没有 custom_boost_factor：
{
"query": {
"bool": {
"must": [
{
"match": {
"name": "Maaz Tariq"
}
}
],
"should": [
{
"term": {
"name.exact": {
"value": "Maaz Tariq",
"boost": 15
}
}
},
{
"prefix": {
"name.exact": {
"value": "Maaz Tariq",
"boost": 10
}
}
},
{
"match_phrase": {
"name": {
"query": "Maaz Tariq",
"slop": 0,
"boost": 5
}
}
}
]
}
}
}
你可以使用 多字段类型， 一个 布尔查询 和 自定义提升因子查询 解决这个问题。
制图：
{
"mappings" : {
"user" : {
"properties" : {
"name": {
"type": "multi_field",
"fields": {
"name": { "type" : "string", "index": "analyzed" },
"exact": { "type" : "string", "index": "not_analyzed" }
}
}
}
}
}
}
查询：
{
"query": {
"bool": {
"must": [
{
"match": {
"name": "Maaz Tariq"
}
}
],
"should": [
{
"custom_boost_factor": {
"query": {
"term": {
"name.exact": "Maaz Tariq"
}
},
"boost_factor": 15
}
},
{
"custom_boost_factor": {
"query": {
"prefix": {
"name.exact": "Maaz Tariq"
}
},
"boost_factor": 10
}
},
{
"custom_boost_factor": {
"query": {
"match_phrase": {
"name": {
"query": "Maaz Tariq",
"slop": 0
}
}
},
"boost_factor": 5
}
}
]
}
}
}
编辑：
正如javanna指出的那样 custom_boost_factor 不需要。
查询没有 custom_boost_factor：
{
"query": {
"bool": {
"must": [
{
"match": {
"name": "Maaz Tariq"
}
}
],
"should": [
{
"term": {
"name.exact": {
"value": "Maaz Tariq",
"boost": 15
}
}
},
{
"prefix": {
"name.exact": {
"value": "Maaz Tariq",
"boost": 10
}
}
},
{
"match_phrase": {
"name": {
"query": "Maaz Tariq",
"slop": 0,
"boost": 5
}
}
}
]
}
}
}
在Java Api的情况下，当使用空格查询确切的字符串时;
CLIENT.prepareSearch(index)
.setQuery(QueryBuilders.queryStringQuery(wordString)
.field(fieldName));
在许多其他查询中，您得不到任何结果
从Elasticsearch 1.0：
"title": {
"type": "multi_field",
"fields": {
"title": { "type": "string" },
"raw": { "type": "string", "index": "not_analyzed" }
}
}
成为：
"title": {
"type": "string",
"fields": {
"raw": { "type": "string", "index": "not_analyzed" }
}
}
https://www.elastic.co/guide/en/elasticsearch/reference/current/multi-fields.html