弹性搜索中对数组元素的查询字符串搜索 [英] Querystring search on array elements in Elastic Search
问题描述
我正在尝试通过一个简单的示例应用程序学习 elasticsearch,该示例应用程序列出了与人相关的引语.示例映射可能如下所示:
I'm trying to learn elasticsearch with a simple example application, that lists quotations associated with people. The example mapping might look like:
{
"people" : {
"properties" : {
"name" : { "type" : "string"},
"quotations" : { "type" : "string" }
}
}
}
一些示例数据可能如下所示:
Some example data might look like:
{ "name" : "Mr A",
"quotations" : [ "quotation one, this and that and these"
, "quotation two, those and that"]
}
{ "name" : "Mr B",
"quotations" : [ "quotation three, this and that"
, "quotation four, those and these"]
}
我希望能够在单个引用上使用查询字符串 api,并返回匹配的人.例如,我可能想找到引用包含(这个和这些)的人——应该返回A 先生"而不是B 先生",依此类推.我怎样才能做到这一点?
I would like to be able to use the querystring api on individual quotations, and return the people who match. For instance, I might want to find people who have a quotation that contains (this AND these) - which should return "Mr A" but not "Mr B", and so on. How can I achieve this?
编辑 1:
下面安德烈的回答似乎有效,数据值现在看起来像:
Andrei's answer below seems to work, with data values now looking like:
{"name":"Mr A","quotations":[{"value" : "quotation one, this and that and these"}, {"value" : "quotation two, those and that"}]}
但是,我似乎无法使用 query_string 查询.以下不会产生任何结果:
However, I can't seem to get a query_string query to work. The following produces no results:
{
"query": {
"nested": {
"path": "quotations",
"query": {
"query_string": {
"default_field": "quotations",
"query": "quotations.value:this AND these"
}
}
}
}
}
有没有办法让 query_string 查询与嵌套对象一起工作?
Is there a way to get a query_string query working with a nested object?
Edit2:是的,请参阅 Andrei 的回答.
Yes it is, see Andrei's answer.
推荐答案
要实现该要求,您需要查看嵌套对象,不是查询扁平化的值列表,而是查询该嵌套对象中的单个值.例如:
For that requirement to be achieved, you need to look at nested objects, not to query a flattened list of values but individual values from that nested object. For example:
{
"mappings": {
"people": {
"properties": {
"name": {
"type": "string"
},
"quotations": {
"type": "nested",
"properties": {
"value": {
"type": "string"
}
}
}
}
}
}
}
值:
{"name":"Mr A","quotations":[{"value": "quotation one, this and that and these"}, {"value": "quotation two, those and that"}]}
{"name":"Mr B","quotations":[{"value": "quotation three, this and that"}, {"value": "quotation four, those and these"}]}
查询:
{
"query": {
"nested": {
"path": "quotations",
"query": {
"bool": {
"must": [
{ "match": {"quotations.value": "this"}},
{ "match": {"quotations.value": "these"}}
]
}
}
}
}
}
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