🍃➕🔑 SpringBoot and JPA composite key

Sometimes you need to use several attributes of an entity to design your DB primary key.

JPA composite key serves that purpose.

Let's see how to implement such composite key !

1️⃣ 𝐘𝐨𝐮 𝐝𝐞𝐟𝐢𝐧𝐞 𝐭𝐡𝐞 𝐂𝐨𝐦𝐩𝐨𝐬𝐢𝐭𝐞 𝐊𝐞𝐲🔑 𝐂𝐥𝐚𝐬𝐬 𝐟𝐨𝐫 𝐭𝐡𝐞 𝐢𝐝:

2️⃣ 𝐘𝐨𝐮 𝐮𝐬𝐞 𝐢𝐭 𝐚𝐬 𝐢𝐝🆔 𝐢𝐧 𝐲𝐨𝐮𝐫 𝐞𝐧𝐭𝐢𝐭𝐲:

3️⃣ 𝐘𝐨𝐮 𝐟𝐢𝐧𝐚𝐥𝐥𝐲 𝐦𝐚𝐤𝐞 𝐲𝐨𝐮𝐫 𝐜𝐚𝐥𝐥𝐬📞 𝐭𝐨 𝐭𝐡𝐞 𝐫𝐞𝐩𝐨𝐬𝐢𝐭𝐨𝐫𝐲: