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#1260: `BaseDOHandler.kt`

projectforge-business/src/main/kotlin/org/projectforge/framework/persistence/candh/BaseDOHandler.kt Copy-and-History Handler (BaseDO), projectforge-business/src/main/kotlin/org/projectforge/framework/persistence/candh/BaseDOHandler.kt 93 lines · 59 code · 27 comments · 7 blank

Handler for properties of type BaseDO in the copy-and-history (CandH) framework. Extends DefaultHandler, accepts any property whose return type is a BaseDO subclass. Equal check compares entity identifiers via HibernateUtils.getIdentifier() instead of object equality.

Architecture

Inheritance

BaseDOHandler extends DefaultHandler. The process() method is inherited from DefaultHandler (commented out in this class). The key override is propertyValuesEqual() which uses idModified().

Key Methods

Method	Description
`accept(property)`	True if return type is subclass of `BaseDO`
`propertyValuesEqual(src, dest)`	Compares entity IDs; true if IDs match (no modification)

Companion

fun idModified(srcObject: Any, destObject: Any): Boolean {
    val srcId = HibernateUtils.getIdentifier(srcObject)
    val destId = HibernateUtils.getIdentifier(destObject)
    return if (srcId != null) srcId != destId else false
}

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