file upload jhipster

 https://blog.ippon.tech/create-a-simple-file-storage-through-database-with-jhipster/

Source Code https://github.com/avdev4j/document-car-mysql

entity Car {
  model String required
}

entity Document {
  title String required
  size Long required
  mimeType String
}

entity Content {
  data Blob required
}

relationship OneToOne {
  Document{content} to Content{document(id) required}
}

relationship OneToMany {
  Car{document} to Document{car(id) required}
}