Spring Boot JPA Query Examples. Using JPA methods and JPA Query Part4 Session 26
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• Billing System using Spring Boot - Billing...
This video explains how to handle JPA queries. JPA query is a hibernate query we are querying against on Object. This is a very powerful query. The reason we are using JPA query is we don't have to change query related code if you change any database in your Project. i.e. without any changes, we can migrate one database to another database because we are not writing native query we are writing queries against the Java Object so we don't have to worry about changing DB in your Project. Following JPA query I am explaining in the video.
This method returns the record those are not deleted state.
List findByDeletedFalse();
In this method, I am using the Like operator. I am fetching a record that matches with whatever string I am passing in the method parameter.
List findByEmailLike(String email);
In the following method, I am using the Like and AND operators.
List findByEmailLikeAndDeletedFalse(String email);
Following the method, I am using IN operator to fetch the data.
List findByStateIn(List stateList);
In the following method, I am using JPA query using @Query annotation
@Query("select address from Address address where address.state in :stateList")
List findByStateList(@Param("stateList") List stateList);
For more clarify please watch the full video. It has a complete demo.
Previous video link:
• Many to Many relation Spring Boot JPA usi...
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