鉴于文件
curl -XPUT 'localhost:9200/test/me/here' -d '{
"top" : [
{ "searchkey" : "change"},
{ "searchkey" : "keep"}
]
}'
我需要一个更新查询,它会将新字段添加到searchkey
等于change
的子文档中,并保持其他任何子文档的完整性。然后是预期的结果:
{
"top" : [
{ "searchkey" : "change", "newfield" : "newvalue"},
{ "searchkey" : "keep"}
]
}
运行通过索引选择内部文档的查询工作,但我不提前知道内部顺序,而且它非常脆弱:
curl -XPOST 'localhost:9200/test/me/here/_update' -d '{
"script" : "ctx._source.top[0].newfield = v",
"params" : {
"v" : "newvalue"
}
}'
有没有办法告诉ES将新字段添加到符合某些条件的内部文档?类似的东西:
curl -XPOST 'localhost:9200/test/me/here/_update' -d '{
"script" : "ctx._source.top[ctx._source.top.searchkey == s].newfield = v",
"params" : {
"s" : "change",
"v" : "newvalue"
}
}'
或者,如果我删除数组并将文档转换为:
,我会做得更好并且省去一些头疼吗?{
"change" : {},
"keep" : {}
}
答案 0 :(得分:3)
您可以将更新与脚本一起使用。见例:
PUT test/data/3/
{
"source": [
{
"name": "A",
"count": 1
},
{
"name": "B",
"count": 2
},
{
"name": "c",
"count": 3
}
]
}
GET test/data/3
POST test/data/3/_update
{
"script": " for (int i = 0; i < source.size(); i++) {boolean f = false;for (int j = 0; j < ctx._source.source.size(); j++) {if (ctx._source.source[j].name == source[i].name) {ctx._source.source[j].count = source[i].count;f=true;break;}}\nif(!f){ctx._source.source.add(source[i]);}}",
"params": {
"source": [
{
"name": "A",
"count": 10
},
{
"name": "B",
"count": 30
},
{
"name": "D",
"count": 50
}
]
}
}
GET test/data/3
答案 1 :(得分:0)
我们可以使用update_by_query API获取与条件匹配的文档,然后滚动json数组以更新数组中的对象。
POST test/data/_update_by_query
{
"script": {
"lang":"painless",
"source":"""
for(int i=0;i<ctx._source.top.length;i++){
if(ctx._source.top[i].searchkey == params.match_value){
ctx._source.top[i].new_field = params.new_value;
}
}
""",
"params" : {
"match_value" : "change",
"new_value" : "new_value"
}
},
"query" : {
"match" : {
"top.searchkey": "change"
}
}
}