JDBC VS Spring JDBC VS JPA VS Spring Data JPA

  •  JDBC:
    • write lot of sql queries(delete form table where id=?)
    • And write lot of java code as well
  • Spring JDBC:
    • write lot of sql queries(delete form table where id=?)
    • But Lesser Java Code
  • JPA:
    • Do not Wory about the Queries
    • Just Map Enties to tables
  • Spring Data JPA:
    • Lets Make JPA even more simple
    • Spring Data JPA will take care of everything
  1. Differance between Hibernate and JPA
    1. JPA Defines a Specification.
    2. JPA is an API
    3. JPA is Like Interface
    4. JPA define how you can define an entities
      1. By Using an @Entity Annotation to define any class as Entity or as table mapping
      2. By Using an @Id Annotation to define primary key
      3. By Using an @Column Annocation to define attribute of the class
  2. Hibernate is one of the popular implementation of JPA
    1. we can use JPA rather than to lock in to hibernate or other implementation of JPA like toplink etc

Previous
Next

Comments

Post a Comment

Popular posts from this blog

Step 1 Rest With Spring Boot

Image
How to Build Rest API  Identify Resources: (/user, /user/{id})  etc.  Identify Actions (GET, POST, PUT, DELETE, PATCH etc.)  Defining Request and Response Structure  Define  Response Status( 200 as Ok, 404 as Page Not Found, 500 Internal Server Error)     400 Series Errors:  Client Side Error     500 Series Errors:  Server Side Error  Best Practices for Rest API 1.Thinking on Consumer Perspective 2. validation  3  Internationalizations -i18n 4. Exception Handling 5. HATEOAS 6. Versioning 7. Documentation  8. Content Negotiation etc.  Internal Working of Spring Boot 1.   How to Handle Request in Spring Boot? Dispatcher Servlet- Front Controller Pattern Mapping Servlets: dispatcher Servlet urls=[/]  ( as dispatcher servlet is mapped to the [/] root URL)   If you search for Mapping servlets you will find out the given below string in logs which is telling to you dispatcher servlet is ma...
Read more

Insert Data using Spring Command line interace (while initialize your application first time)

 Step 1:  Create  CourseJdbcRepository.java to insert your dummy hardcoded data into DB @Repository public class CourseJdbcRepository { @Autowired private JdbcTemplate springjdbcTemplate ; //""" will be known as text block //(this allows us to retain the formatting for your queries which allow to easy to understand) private static String INSERT_QUERY = """ insert into course (id,name,author) values(1,'Learn Java', 'khanDev') """ ; public void insert() { springjdbcTemplate .update( INSERT_QUERY ); } } Step 2: CourseJdbcCommandLineRunner.java to call the insert() method while first time load the application @Component public class CourseJdbcCommandLineRunner implements CommandLineRunner { @ Autowired CourseJdbcRepository courseJdbcRepository ; @Override public void run(String... args ) throws Exception { courseJdbcRepository .insert(); } }
Read more