所以我有一个schedule对象,其中包含DateActiveScheduleItem的列表。我想要它,这样如果我从schedule对象的列表中删除DateActiveScheduleItems项并使用CrudRepository保存该计划,它将从数据库中删除DateActiveScheduleItem,at我的代码似乎没那样做的那一刻。我该如何改变级联?
@Override
public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) {
float offsetAlpha = (appBarLayout.getY() / appBarLayout.getTotalScrollRange());
ObjectAnimator scaleDownX = ObjectAnimator.ofFloat(imageView, "scaleX", offsetAlpha + 1);
ObjectAnimator scaleDownY = ObjectAnimator.ofFloat(imageView, "scaleY", offsetAlpha + 1);
scaleDownX.setDuration(0).start();
scaleDownY.setDuration(0).start();
}
DateActiveScheduleItem
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答案 0 :(得分:0)
孤立删除会从关系中删除相应的子项时删除相应的子项。因此,如果从dateActiveScheduleItems集合中删除1个DateActiveScheduleItem,JPA也会自动从数据库中删除该DateActiveScheduleItem。
@OneToMany(mappedBy = "schedule",cascade = CascadeType.ALL, orphanRemoval="true")
private List<DateActiveScheduleItem> dateActiveScheduleItems = new ArrayList<>();
有关OrphanRemovel的更多信息HERE