更新时间:2023-02-08 20:24:44
我找到答案在这篇文章中:乐趣与弹性搜索的孩子和嵌套文档。嵌套文档是关键。映射:
I found the answer in this post: Fun With Elasticsearch's Children and Nested Documents. A nested Document is the key. The mapping:
{
"book":{
"properties": {
"tags": { "type": "multi_field",
"fields": {
"tags": { "type": "string", "store":"yes", "index": "analyzed" },
"facet": { "type": "string", "store":"yes", "index": "not_analyzed" }
}
},
"editions": { "type": "nested",
"properties": {
"title_author": { "type": "string", "store": "yes", "index": "analyzed" },
"title": { "type": "string", "store": "yes", "index": "analyzed" }
}
}
}
}
}
该文档:
"tags": ["novel", "crime"],
"editions": [
{
"title": "two",
"title_author": "two one"
},
{
"title": "three",
"title_author": "three one"
}
]
现在我可以搜索:
{
"query": {
"bool": {
"should": [
{
"nested": {
"path": "editions",
"query": {
"match": {
"editions.title_author": {
"query": "one two",
"operator": "and"
}
}
}
}
}
]
}
}
}
如果搜索二三,我将无法获得匹配。我会得到一个一二或一三。在1.1.0版本中,还有另一个选项可以使用multi_match查询,而cross_fields选项不允许重复标题,只能将作者名称添加到每个嵌套文档中。这将使索引保持较小。
And if searched for "two three" I would not get a match. I would get one with "one two" or "one three". In version 1.1.0 there will be another option with a multi_match query and the option cross_fields which would allow not to repeat the title and only add the author name to each nested document. That would keep the index smaller.