I am new to Redis and developing Spring Boot + Spring Data Redis example. I am using CrudRepository, Example and ExampleMatchers API to do the searching from the Redis Key value store DB.
Now when I simply run my code, I saw that persons data saved as SET and HASH as well. Is this correct ? What's the use of saving the Person details both as SET and HASH
Showing all my code
public enum Gender {
MALE, FEMALE {
@Override
public String toString() {
return "Superwoman";
}
}
}
Species.java
@Builder
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Species {
@Indexed
private String name;
}
Person.java
@Data
@Builder
@AllArgsConstructor
@NoArgsConstructor
@RedisHash("persons")
public class Person {
@Id
private String id;
@Indexed
private String firstname;
private String lastname;
@Indexed
private Gender gender;
private List<String> nicknames;
@Indexed
private Integer age;
private Map<String, String> physicalAttributes;
@Reference
private Person relative;
private Species species;
}
PersonRepository.java
public interface PersonRepository extends CrudRepository<Person, String>, QueryByExampleExecutor<Person> {
}
RedisExampleDemoApplication.java
@SpringBootApplication
public class RedisExampleDemoApplication implements CommandLineRunner{
RedisMappingContext mappingContext = new RedisMappingContext();
ExampleQueryMapper mapper = new ExampleQueryMapper(mappingContext, new PathIndexResolver(mappingContext));
@Autowired
private PersonRepository personRepository;
public static void main(String[] args) {
SpringApplication.run(RedisExampleDemoApplication.class, args);
}
@Override
public void run(String... args) throws Exception {
Person person = Person.builder().firstname("Walter").gender(Gender.MALE).age(50).build();
Person person1 = Person.builder().firstname("Savani").gender(Gender.FEMALE).age(35).build();
personRepository.save(person);
personRepository.save(person1);
// [firstname:Walter, gender:MALE, age:50]
RedisOperationChain operationChain = mapper.getMappedExample(Example.of(person, ExampleMatcher.matchingAny()));
System.out.println(operationChain.getOrSismember());
System.out.println("----------------------------------------------");
Person p = Person.builder().lastname("Foo").build();
RedisOperationChain roc = mapper.getMappedExample(Example.of(p));
System.out.println(" == "+roc.getOrSismember());
System.out.println("-- "+roc.getSismember());
}
}
