[hibernate-issues] [Hibernate-JIRA] Commented: (HSEARCH-1093) Smarter dirty checking with @Transient fields

[Sanne Grinovero (JIRA)]

    [ https://hibernate.onjira.com/browse/HSEARCH-1093?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=46288#comment-46288 ] 

Sanne Grinovero commented on HSEARCH-1093:
------------------------------------------

{quote}I suppose from a purist point of view flagging transient as dirty by default is the same as flagging Classbridged class as dirty by default.{quote}
Exactly what we do. I am obviously interested in exploring nice ways to provide this control to user. Still, correctness comes first.

It's a tricky subject, since Search can hardly introspect which fields you're reading from the custom code.. and adding too many options and annotations makes it hard to learn.

{quote}Neither fails to generate a lack of enthusiasm in me{quote}
Great!

> Smarter dirty checking with @Transient fields
> ---------------------------------------------
>
>                 Key: HSEARCH-1093
>                 URL: https://hibernate.onjira.com/browse/HSEARCH-1093
>             Project: Hibernate Search
>          Issue Type: Improvement
>    Affects Versions: 4.1.0.Final
>            Reporter: Marc Schipperheyn
>
> I found that if you have a field that is @Transient and depends on a Hibernate managed field, this field is not updated when the underlying field changes. 
> {code}
>    @ManyToOne
>    @JoinColumn
>    @IndexedEmbedded
>    public Photo getPhoto() {
>       return photo;
>    }
>    @Transient
>    @Field
>    public String getMugshot(){
>       if(photo == null)
>          return null;
>       return getUserDirectory() + "/" + photo.getFilename();
>    }
> {code}
> This makes sense. However, it's not desirable. I would therefore want to propose an annotation that can add some magic to dirty checking and inform Hibernate Search that when @Field x gets dirty, the @Transient field should also be considered dirty
> Something like 
> {code}
>    @ManyToOne
>    @JoinColumn
>    @IndexedEmbedded
>    public Photo getPhoto() {
>       return photo;
>    }
>    @Transient
>    @Field
>    @AssociateDirty(fields={"photo"})
>    public String getMugshot(){
>       if(photo == null)
>          return null;
>       return getUserDirectory() + "/" + photo.getFilename();
>    }
> {code}
> There are many names one might give to such an annotation. E.g. @YouDirtyMeDirty, but many somehow sound a little "dirty" :-)

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