(Quick Reference)

getDirtyPropertyNames

目的
Purpose

Retrieve the names of modified fields in a domain class instance.

使用例
Examples

def b = Book.get(1)
someMethodThatMightModifyTheInstance(b)

def names = b.dirtyPropertyNames for (name in names) { def originalValue = b.getPersistentValue(name) … }

詳細
Description

This method is useful mostly for audit logging or other work done in a beforeUpdate event callback. Hibernate caches the original state of all loaded instances for dirty checking during a flush and this method exposes the names of modified fields so you can compare them with the current state.