elasticSearch RangeQuery范围查询from to的理解

elasticSearch RangeQuery范围查询from to的理解

Elasticsearch Guide 选择版本号来查询对应的文档内容:
https://www.elastic.co/guide/en/elasticsearch/reference/6.7/index.html

需要根据版本号来查询：
Elasticsearch Guide [6.7] Query DSL Term level queries Range Query
https://www.elastic.co/guide/en/elasticsearch/reference/6.7/query-dsl-range-query.html

查看RangeQueryBuilder.java源码内容：

public static final boolean DEFAULT_INCLUDE_UPPER = true;    //默认是包含
    public static final boolean DEFAULT_INCLUDE_LOWER = true;  //默认是包含    private boolean includeLower = DEFAULT_INCLUDE_LOWER;
    private boolean includeUpper = DEFAULT_INCLUDE_UPPER;    /**
     * The from part of the range query. Null indicates unbounded.   默认是包含(大于等于)
     */
    public RangeQueryBuilder from(Object from) {
        return from(from, this.includeLower);
    }    /**
     * The from part of the range query. Null indicates unbounded.    大于
     */
    public RangeQueryBuilder gt(Object from) {
        return from(from, false);
    }    /**
     * The from part of the range query. Null indicates unbounded.    大于等于
     */
    public RangeQueryBuilder gte(Object from) {
        return from(from, true);
    }    /**
     * The to part of the range query. Null indicates unbounded.    默认是包含(小于等于)
     */
    public RangeQueryBuilder to(Object to) {
        return to(to, this.includeUpper);
    }    /**
     * The to part of the range query. Null indicates unbounded.   小于
     */
    public RangeQueryBuilder lt(Object to) {
        return to(to, false);
    }    /**
     * The to part of the range query. Null indicates unbounded.    小于等于
     */
    public RangeQueryBuilder lte(Object to) {
        return to(to, true);
    }

demo代码(三种方式)：
boolQueryBuilder.must(QueryBuilders.rangeQuery("field1").to(reqVO.getDate2()));
boolQueryBuilder.must(QueryBuilders.rangeQuery("field2").from(reqVO.getDate1()));
boolQueryBuilder.must(QueryBuilders.rangeQuery("field2").from(reqVO.getDate1())).to(reqVO.getDate2()));