https://github.com/anicetkeric/spring-data-specification

Spring Data JPA – Dynamically build queries using JPA Criteria API/Specification
https://github.com/anicetkeric/spring-data-specification

jpa-specification lombok spring-boot spring-data-jpa spring-rest-api

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Spring Data JPA – Dynamically build queries using JPA Criteria API/Specification

• Host: GitHub
• URL: https://github.com/anicetkeric/spring-data-specification
• Owner: anicetkeric
• Created: 2019-07-07T16:41:37.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2024-08-23T17:40:12.000Z (4 months ago)
• Last Synced: 2024-08-23T19:31:18.357Z (4 months ago)
• Topics: jpa-specification, lombok, spring-boot, spring-data-jpa, spring-rest-api
• Language: Java
• Size: 94.7 KB
• Stars: 1
• Watchers: 2
• Forks: 3
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# spring-data-specification

Spring Data JPA – Dynamically build queries using JPA Criteria API/Specification

## Prerequisites

Ensure you have this installed before proceeding further

* Spring Boot 3.3.2

* Lombok

* Java 21

* H2 database

* Spring Tool Suite™ (STS) or others

### Features

* Order By direction and order By ColumnsName

* Equal/NotEqual/Like/NotLike/In/NotIn/Join support multiple values, Equal/NotEqual support **Null** value.

* Support custom specification.

* Custom Pagination response

Department ---> Employee

Create a base Repository class should extends from two super class **JpaRepository** and **JpaSpecificationExecutor**.

```java

@NoRepositoryBean

public interface BaseRepository extends JpaRepository , JpaSpecificationExecutor {

} 

```

Implement specification in Service class

```java

@Service

public class EmployeeServiceImpl implements EmployeeService {

  

   private final EmployeeRepository employeeRepository;

    

   public EmployeeServiceImpl(EmployeeRepository employeeRepo){

    this.employeeRepository = employeeRepo;

   }

    @Override

    public Page findAllSpecification(Specification specs, Pageable pageable) {

        return employeeRepository.findAll(specs, pageable);

    }

}

```

Endpoint demo

```

GET http://localhost:8080/api/employee/search?page=1&size=10&and=firstName;eq;Steven

GET http://localhost:8080/api/employee/search?page=1&size=10&or=firstName;startwith;K,firstName;like;ir

GET http://localhost:8080/api/employee/search?page=1&size=10&or=firstName;startwith;K,firstName;like;on

```