Appending custom conditions on spring data jpa repository method queries

Question

Short Version

I am looking for a way to have all the findBy methods of a repository class appended with a particular condition

Full Vers

Answer 1

You can use Predicate of QueryDSL (or Specification) in Spring Data JPA methods.

Example:

interface UserRepository extends CrudRepository, QueryDslPredicateExecutor {
}

Predicate predicate = QUser.user.firstname.equalsIgnoreCase("dave")
    .and(user.lastname.startsWithIgnoreCase("mathews"));

userRepository.findAll(predicate);

To work with QueryDSL add to you pom.xml:

//..
    
        com.querydsl
        querydsl-jpa
        4.1.4
        
            
                org.slf4j
                slf4j-api
            
        
    
    
        com.querydsl
        querydsl-apt
        4.1.4
        provided
    



    
        
            org.springframework.boot
            spring-boot-maven-plugin
        

        
            com.mysema.maven
            apt-maven-plugin
            1.1.3
            
                
                    
                        process
                    
                    
                        target/generated-sources
                        com.querydsl.apt.jpa.JPAAnnotationProcessor
                    
                
            
        
    

Then compile your project and you will get Q-classes of your entities. More info is here.