ElasticsearchService.java

private QueryBuilder getQueryBuilder(String value) {

    value = value.toLowerCase();

    return QueryBuilders.disMaxQuery()
            .add(matchPhraseQuery("post_title", value).boost(3))
            .add(matchPhraseQuery("post_excerpt", value).boost(3))
            .add(matchPhraseQuery("terms.post_tag.name", value).boost(2))
            .add(matchPhraseQuery("terms.category.name", value).boost(2))
            .add(matchPhraseQuery("post_content", value).boost(1));
}