實例

public long countBetweenFields(String userId){Criteria criteria = new Criteria() {@Overridepublic DBObject getCriteriaObject() {DBObject obj = new BasicDBObject();obj.put("$where", "this.lastUpdateTime > this.lastReadTime");return obj;}};Query query = new Query();query.addCriteria(Criteria.where("userId").is(userId));query.addCriteria(criteria);return mongoTemplate.count(query,"forum");}

docs

• how-to-compare-2-fields-in-spring-data-mongodb-using-query-object

• mongodb-spring-data-comparison-between-fields

• spring-data-mongodb-compare-two-document-field

總結

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