我在Hibernate 3.6.x中使用JPA2

我对@Version进行了简单测试。

假设我们有2个实体，

1. 实体团队具有玩家实体列表，双向关系，惰性获取类型，级联类型全部
2. 两个实体都有@Version

这是场景：

1. 每当对团队/球员实体之一进行修改时，刷新/提交时，团队/球员的版本就会增加（修改后的记录的版本会增加）。

2. 使用persist将新的球员实体添加到团队的集合中，将在persist之后分配团队版本的实体（添加新实体，该新实体将获取其版本）。

3. 每当对一个玩家实体进行添加/修改/删除时，刷新/提交后团队的版本就会增加。（添加/修改/删除孩子的记录，父母的版本也增加了）

我可以理解数字1和2，但是我不能理解数字3，为什么团队的版本增加了？

这让我想到了其他问题：

1. 如果我得到了父母<->儿童<->亲子关系船该怎么办。对子孙的增加或修改会增加孩子和父母的版本吗？
2. 在场景2中，如何在提交之前在团队中获取版本，例如使用flush？在对孩子做一些事情之后，是否建议获取父母的版本？

这是来自我的实验的代码示例，证明当ReceivingGoodDetail是拥有方时，刷新后该版本在ReceivingGood中得到了增加。抱歉，这使用其他实体，但是ReceivingGood像Team，ReceivingGoodDetail像Player。1个ReceivevingGood
/ Team，很多ReceivingGoodDetail / Player。

/*
Hibernate: select receivingg0_.id as id9_14_, receivingg0_.creationDate as creation2_9_14_, .. too long
Hibernate: select product0_.id as id0_4_, product0_.creationDate as creation2_0_4_, .. too long
before persisting the new detail, version of header is : 14
persisting the detail 1c9f81e1-8a49-4189-83f5-4484508e71a7
printing the size of the header : 
Hibernate: select details0_.receivinggood_id as receivi13_9_8_, details0_.id as id8_, details0_.id as id10_7_, .. too long
7
after persisting the new detail, version of header is : 14
Hibernate: insert into ReceivingGoodDetail (creationDate, modificationDate, usercreate_id, usermodify_id, version, buyQuantity, buyUnit, internalQuantity, internalUnit, product_id, receivinggood_id, supplierLotNumber, id) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
Hibernate: update ReceivingGood set creationDate=?, modificationDate=?, usercreate_id=?, usermodify_id=?, version=?, purchaseorder_id=?, supplier_id=?, transactionDate=?, transactionNumber=?, transactionType=?, transactionYearMonth=?, warehouse_id=? where id=? and version=?
after flushing, version of header is now : 15
    */
public void addDetailWithoutTouchingCollection() {
    String headerId = "3b373f6a-9cd1-4c9c-9d46-240de37f6b0f";
    ReceivingGood receivingGood = em.find(ReceivingGood.class, headerId);

    // create a new detail
    ReceivingGoodDetail receivingGoodDetailCumi = new ReceivingGoodDetail();
    receivingGoodDetailCumi.setBuyUnit("Drum");
    receivingGoodDetailCumi.setBuyQuantity(1L);
    receivingGoodDetailCumi.setInternalUnit("Liter");
    receivingGoodDetailCumi.setInternalQuantity(10L);
    receivingGoodDetailCumi.setProduct(getProduct("b3e83b2c-d27b-4572-bf8d-ac32f6de5eaa"));
    receivingGoodDetailCumi.setSupplierLotNumber("Supplier Lot 1");
    decorateEntity(receivingGoodDetailCumi, getUser("3978fee3-9690-4377-84bd-9fb05928a6fc"));
    receivingGoodDetailCumi.setReceivingGood(receivingGood);

    System.out.println("before persisting the new detail, version of header is : " + receivingGood.getVersion());

    // persist it
    System.out.println("persisting the detail " + receivingGoodDetailCumi.getId());
    em.persist(receivingGoodDetailCumi);

    System.out.println("printing the size of the header : ");
    System.out.println(receivingGood.getDetails().size());

    System.out.println("after persisting the new detail, version of header is : " + receivingGood.getVersion());

    em.flush();

    System.out.println("after flushing, version of header is now : " + receivingGood.getVersion());
}