JPA Entities Through Database Tables

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#springboot #jpa #java
Please watch the full video to understand the concept for creating JPA entities using database tables.

Below are the procedure to create JPA entity.

Procedure
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1.In the Package Explorer view, right-click the JPA project and select JPA Tools Generate Entities from Tables.
2. On the Database Connection page, select a database connection and schema. If you have not created the database connection, click the Add connections icon and follow the prompts in New Connection Profile wizard to complete the new connection.
3. Select the tables from which you want to generate JPA entities.
4. Click Next.
5. In the Source folder field, the src folder of the JPA project is set by default. To specify another folder, click Browse and select it.
6. In the Package field enter a package for the Java™ classes for the JPA entities.
7. Optional: The entity name is the same as the table name by default. To change the entity name, click it and type the new name.
8. Click Finish. The entities are generated in the source folder and package that you specified.

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Superb video, smooth and clear explanation ✨

gaurav_saw_
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Hello Shiva
I donot get JPA project option in my STS or ecllipse IDE. How can I get it?

vijendramishra
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Hi Shiva. is there any way to enforce any entity rules within spring jpa when tables from database are populated, that they should correspond to certain entity properties. such that an entity person in rdbms is normalized into many tables.

ahsansiddiqui
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Great. What if tables are already linked to each others throught foreign key? Will hibernate automatically do relationship for us?

ahoussimea
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thanks you are greate but what if I want to get some CONSTRAINT such
CONSTRAINT CHK_class CHECK (column_in_DB in ('A', 'B', 'C', 'D', 'E')),
or CONSTRAINT unique_s_g_c UNIQUE (column1, column2, column3)

osamamohammed
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First, Thank you very much, excellent video, do you happen to know how to do this but with JPA and Hibernate? I need to persist data in Mysql but I am not able to establish a connection and Hibernate creates the entities for me automatically. I am using Eclipse EE

andresweitzel.archivo
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Sir this revese engineering can be done only by creating an jpa project?Can't we do in existing spring boot project?

sivaramakrishnantv