1. Customize JPA Repository base class:

   @SpringBootApplication
   @EnableJpaRepositories(repositoryBaseClass = ExpressionsRepositoryImpl.class)
   public class Application { … }

2. Change your repository to extends ExpressionsRepository:

   @Repository
   public interface EmployeeRepository extends ExpressionsRepository<Employee, Long> {
   }

3. Build the controller/service:

   @PostMapping("/search")
   public ResponseEntity<Page<EmployeeDto>> search(@RequestBody Expressions expressions, Pageable pageable) {
   
       return ok().body(
                   employeeRepository.findAll(expressions, pageable).map(employeeMapper::toDto)
           );
   }

4. Send Mongodb query in JSON from frontend:

   {
     "$or": [
       {"lastName": "ibrahim"},
       {
         "$and": [
           {"firstName": "mostafa"},
           {"birthDate": {"$gt": "1990-01-01"}}
         ]
       }
     ]
   }

For quick start see this Medium post or dev.to post or see this demo example on Github.

See documentation website for details about how to get started.

<dependency>
  <groupId>com.github.mhewedy</groupId>
  <artifactId>spring-data-jpa-mongodb-expressions</artifactId>
  <version>0.1.0</version>
</dependency>

Note: Starting from version 0.1.0 the library supports springboot 3, to use the library with springboot 2 use versions 0.0.x e.g. version 0.0.5.

Special thanks to Rashad Saif and Hamada Elnoby for helping in the design, inspring with ideas, and for doing code review.

See List of issues to be shipped in the next release

This repo has mentioned in spring.io weekly news.

see https://expressions-validator.fly.dev/ to help validate expressions