Session: How to check if entity has changed?
To check if specific entity differs from the one downloaded from server hasChanged method from advanced session operations has been introduced.
Syntax
public boolean hasChanged(Object entity);
| Parameters |
|
|
| entity |
Object |
Instance of entity for which changes will be checked. |
| Return Value |
|
| boolean |
Indicated if given entity has changed. |
Example
Employee employee = session.load(Employee.class, "employees/1");
boolean hasChanged = session.advanced().hasChanged(employee); // false
employee.setLastName("Shmoe");
hasChanged = session.advanced().hasChanged(employee); //true
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