java - Hibernate entity property defined by a query -

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I try to implement the document modification tracking system with Java and Hibernate. The document is saved with every modern autor and timestamp. To get the creator of the document, I need to mod mod at the earliest. Here it is: 

  @Antity @Table (name = "modifications") Public class revision {String autor; Date; Document document; @ManyToOne public document getDocument () {...} // Author of this mod @ column (name = "author") public string getAutor () {...} // and other attributes} @tainty (name = "Document") public class document {private list & lt; Research & gt; Amendments; @OneToMany (mapped = "document") public list & lt; Research & gt; GetModifications () {...} // The question about this property is how do I apply it with Hibernate? // I do not want to store the "autor" field in the unit, // it should be determined with the query from the modifications table. // But I'm not getting any examples of defining properties ... // so I need your advice :) Public string getAutor () {...} // Other properties}  < / Pre>  
 
 
 I do not have at least the power in the  getAutor ()  method. IMO entites itself should not execute questions.  
 So why do not you provide a way in some service / DAO which provides the author as necessary? Alternatively, you want to create a transient field for the author in the document and fill it with Dao. In this way, you only need to load the author once and use the information multiple times.

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