App Engine中的实体和持久对象之间有什么区别？
[英]What is the difference between an Entity and a Persistent Object in App Engine?
问题描述
I am fairly new to App Engine and I am trying to figure out how to store and retrieve data. 
我对App Engine还是相当陌生，我正在尝试弄清楚如何存储和检索数据。 However, I am confused about the difference between a java class marked with @Entity(name="name") and a class marked with @PersistenceCapable. 但是，我对标有@Entity（name =“ name”）的java类和标有@PersistenceCapable的类之间的区别感到困惑。 What is the difference between these two if I am trying to store something which can be sent off to a client? 如果我要存储可以发送给客户端的内容，那么两者之间有什么区别？ For example, if I have an API which makes a list of Cars available for rental, would I use an Entity or a PersistenceCapable class for the Car object? 例如，如果我有一个API，该API可以列出可供租借的汽车列表，那么我可以对Car对象使用Entity还是PersistenceCapable类？
1 个解决方案
解决方案1
0 2014-04-14 23:07:19
I believe @Entity is part of JPA and @PersistencCapable is JDO. 我相信@Entity是JPA的一部分，而@PersistencCapable是JDO。 Hence you might want to read this discussion about JPA vs JDO: https://db.apache.org/jdo/jdo_v_jpa.html 因此，您可能想阅读有关JPA与JDO的讨论： https : //db.apache.org/jdo/jdo_v_jpa.html
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