Elasticsearch range query with multiple condition - spring-boot

Question

I have to fetch records from Elastic Search on the basis of date it is updated and created. I have these two fields updatedDate and createdDate and the condition should be:
To fetch records that has updatedDate within the range of past 3 years.
If updatedDate is null, fetch records that has createdDate within the range of past 3 years.
I have written the query in java for fetching the records on the basis of record createdDate:
.must(QueryBuilders.rangeQuery("createdDate").from(startDate,true).to(endDate,true));
startDate and endDate holds the date range.
I am new to Elastic Search, don't know how to implement the above condition.

Answer 1

Since you have not provided any index data, so adding a working example with sample index data, mapping, search query and search result that satisfies all the conditions required for your use case.
Index Mapping:
{
"mappings": {
"properties": {
"createdDate": {
"format": "yyyy-MM-dd'T'HH:mm:ss'Z'",
"type": "date"
},
"updatedDate": {
"format": "yyyy-MM-dd'T'HH:mm:ss'Z'",
"type": "date"
}
}
}
}
Index Data:
{
"createdDate": "2020-08-15T00:00:00Z"
}
{
"createdDate": "2019-08-15T00:00:00Z"
}
{
"createdDate": "2010-08-15T00:00:00Z"
}
{
"updatedDate": "2021-08-15T00:00:00Z",
"createdDate": "2002-08-15T00:00:00Z"
}
{
"updatedDate": "2018-08-15T00:00:00Z",
"createdDate": "2020-09-15T00:00:00Z"
}
{
"updatedDate": "2000-08-15T00:00:00Z",
"createdDate": "2020-09-15T00:00:00Z"
}
Search Query:
{
"query": {
"bool": {
"should": [
{
"bool": {
"must": [
{
"bool": {
"filter": {
"range": {
"createdDate": {
"gte": "now-3y",
"lte": "now"
}
}
},
"must_not": {
"exists": {
"field": "updatedDate"
}
}
}
}
]
}
},
{
"bool": {
"filter": {
"range": {
"updatedDate": {
"gte": "now-3y",
"lte": "now"
}
}
}
}
}
],
"minimum_should_match": 1
}
}
}
Search Result:
"hits": [
{
"_index": "64965551",
"_type": "_doc",
"_id": "1",
"_score": 0.0,
"_source": {
"createdDate": "2020-08-15T00:00:00Z"
}
},
{
"_index": "64965551",
"_type": "_doc",
"_id": "2",
"_score": 0.0,
"_source": {
"createdDate": "2019-08-15T00:00:00Z"
}
},
{
"_index": "64965551",
"_type": "_doc",
"_id": "5",
"_score": 0.0,
"_source": {
"updatedDate": "2018-08-15T00:00:00Z",
"createdDate": "2020-09-15T00:00:00Z"
}
}
]