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Best way to update collection, who has responsibility, in DAO + one-to-many situation  RSS feed

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I was wondering what's the best way to do the following.

client logs in on website,
client selects a "Project"
client uploads an "Image" for the selected "Project".

I have a Project-class which contains a Set of Image-instances.

this is the code when the user presses the upload-button, from the ImageBean-class:

Is this a good way to do it? Or should the create-method of the imageService-class do the p.addImage and projectService.update stuff?
Or should there be a projectService.addImageForProject(Image image) method?

Kind regards
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