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preDirty(event) - JDO DirtyLifecycleListener's method

Invoked whenever a persistent instance is first made dirty, during an operation that modifies the value of a persistent or transactional field. Called before the value is changed.
Parameters:
event -
Since:
JDO 2.0

This documentation page is derived (with some adjustments) from the JDO 2.2 API
and is available under the terms of the Apache License, v. 2.0.