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https://issues.apache.org/jira/browse/DELTASPIKE-606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas Hug resolved DELTASPIKE-606.
-----------------------------------
Resolution: Fixed
> Simplified DTO mapping for Entity updates
> -----------------------------------------
>
> Key: DELTASPIKE-606
> URL: https://issues.apache.org/jira/browse/DELTASPIKE-606
> Project: DeltaSpike
> Issue Type: Improvement
> Components: Data-Module
> Reporter: Thomas Hug
> Assignee: Thomas Hug
> Fix For: 0.8
>
>
> Updating a DTO currently still requires custom code in a mapper. This should
> be reduced to a minimum in the mapper base class.
> SimpleQueryInOutMapperBase:
> {code:java}
> @Inject
> private QueryInvocationContext context;
> protected abstract Object getPrimaryKey(Dto dto);
> protected E findEntity(Object pk)
> {
> return (E) context.getEntityManager().find(context.getEntityClass(), pk);
> }
> @Override
> public Object mapParameter(final Object parameter)
> {
> Object pk = getPrimaryKey((Dto) parameter);
> if (pk != null)
> {
> E entity = findEntity(pk);
> return toEntity(entity, (Dto) parameter);
> }
> return toEntity(newEntity(), (Dto) parameter);
> }
> {code}
> Note that this is an API breaking change (toEntity).
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