`deleteRealmIfMigrationNeeded()` 是否总是删除数据？还是仅在出现 RealmMigrationNeededException 时？

Question

https://realm.io/docs/javascript/latest/#opening-realms 领域文档说

deleteRealmIfMigrationNeeded: delete the Realm if migration is needed; this is useful under development since the data model might change often

在RealmConfiguration.java，它说

 * Setting this will change the behavior of how migration exceptions are handled. Instead of throwing a
 * {@link io.realm.exceptions.RealmMigrationNeededException} the on-disc Realm will be cleared and recreated
 * with the new Realm schema.

所以我的问题是，deleteRealmIfMigrationNeeded() 是否总是在迁移时删除数据库？还是只有在迁移失败时才删除？

Answer 1

deleteRealmIfMigrationNeeded() 将在您更改领域类结构时删除应用架构。否则它不会删除你的架构。