如何在java中的弹性搜索Querybuilder中处理多个“和”“或”运算符

Question

I have a POST body JSON which has one of the input as below

    q = (a=1 and b=2 or c=3 and d=8)

I need to form a querybuilder elastic query using java

BoolQueryBuilder qb = QueryBuilders.boolQuery();
qb1= QueryBuilders.matchQuery("a", "1");
qb2= QueryBuilders.matchQuery("b", "2");
qb3= QueryBuilders.matchQuery("c", "1");
qb4= QueryBuilders.matchQuery("d", "1");

qb.must(qb1);
qb.must(qb2);
qb.should(qb3);
qb.must(qb4);

Will elastic search take care of the and operation to be done first and then or to be considered.

How to I handle multiple and and or combinations (user is free to type anything ). I am new to Elastic search would appreciate some help

Answer 1

I think bool query might be helpful to you

{
    "bool" : {
        "should" : [
            { "must" : { "term" : { "a" : "1" } } },
            { "must" : { "term" : { "b" : "1" } } }
        ]
        "should" : [
            { "must" : { "term" : { "c" : "1" } } },
            { "must" : { "term" : { "d" : "1" } } }
        ]
    }
}

Answer 2

sharing a pseudo code, hope it helps

elasticbuilder.boolQuery().should([
    elasticbuilder.boolQuery().must([
        elasticbuilder.matchQuery(1)
        elasticbuilder.matchQuery(2)    
    ])
    elasticbuilder.boolQuery().must([
        elasticbuilder.matchQuery(3)
        elasticbuilder.matchQuery(4)
    ])
])

Answer 3

Usually I just create an example query in Kibana and then 'translate' it to the Java client api. Not sure if this applies to you but if you want to create a full text search you could provide hints to the user as per how it is in ES docs .

The simple_query_string query supports the following operators: + signifies AND operation | signifies OR operation - negates a single token " wraps a number of tokens to signify a phrase for searching * at the end of a term signifies a prefix query ( and ) signify precedence ...