symphony/SymphonyDatabaseNode/src/main/java/io/github/lumijiez/Data.java

package io.github.lumijiez;

import jakarta.persistence.EntityManager;
import jakarta.persistence.EntityManagerFactory;
import jakarta.persistence.Persistence;

public class Data {
    private static final EntityManagerFactory entityManagerFactory;

    static {
        entityManagerFactory = Persistence.createEntityManagerFactory("mainUnit");
    }

    public static EntityManager getEntityManager() {
        return entityManagerFactory.createEntityManager();
    }

    public static void close() {
        if (entityManagerFactory != null && entityManagerFactory.isOpen()) {
            entityManagerFactory.close();
        }
    }
}