我需要在 Proguard 中为 运行 ObjectDB 保留什么？

Question

我正在使用 Proguard to minimize the size of my shaded/uber Jar. This was working great until I included a dependency on ObjectDB。我需要保留什么才能使 ObjectDB 工作？

我在调用 Persistence.createEntityManagerFactory() 时得到以下输出。

javax.persistence.spi.PersistenceProviderResolverHolder$DefaultPersistenceProviderResolver log
WARNING: javax.persistence.spi::No valid providers found using:
javax.persistence.spi.PersistenceProviderResolverHolder$DefaultPersistenceProviderResolver log
WARNING: javax.persistence.spi::com.objectdb.jpa.Provider - jar:file:/C:/Documents/JProjects/TimeClock/target/TimeClock-1.5.0.jar!/META-INF/services/javax.persistence.spi.PersistenceProvider

javax.persistence.PersistenceException: No Persistence provider for EntityManager named db.odb
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:85)
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:54)

Answer 1

使用以下 Proguard 选项：

-keep class com.objectdb.jpa.Provider {<fields>; <methods>;}