在Elastic Search中对数组元素进行查询字符串搜索
我正在尝试通过一个简单的示例应用程序学习Elasticsearch,该应用程序列出了与人相关的报价。映射示例如下所示:
{ "people" : {
"properties" : {
"name" : { "type" : "string"},
"quotations" : { "type" : "string" }
}
}
}
一些示例数据可能看起来像:
{ "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"]
}
我希望能够对单个引用使用querystring api,并返回匹配的人。例如,我可能想查找报价包含(此与这些)的人-应该返回“ A先生”而不是“
B先生”,依此类推。我该如何实现?
编辑1:
安德烈(Andrei)在下面的回答似乎可行,数据值现在看起来像:
{"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query_string查询正常工作。以下没有结果:
{ "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?
Edit2:是的,请参阅Andrei的答案。
回答:
为了达到该要求,您需要查看嵌套对象,而不是查询平整的值列表,而是查询该嵌套对象中的各个值。例如:
{ "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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