title: Is it possible to dynamically define column names in Hibernate / JPA?
body: <p>So i have this existing DB schema with a number of tables that i want to model with JPA/Hibernate. Each
  table has the same group of 30 additional columns ( to allow for runtime expansion of the number of fields
  recorded). </p>
  
  <pre><code>CREATE TABLE XX
    (
      "ID"          VARCHAR2(100 BYTE) NOT NULL ENABLE,
      "USER_LABEL"      VARCHAR2(256 BYTE),
      "CREATION_DATE"   NUMBER(38,0) NOT NULL ENABLE,
      "ADD_STR_FIELD_0" VARCHAR2(200 BYTE),
      "ADD_LNG_FIELD_0" NUMBER(38,0),
      "ADD_DBL_FIELD_0" NUMBER(38,0),
      "ADD_STR_FIELD_1" VARCHAR2(200 BYTE),
      "ADD_LNG_FIELD_1" NUMBER(38,0),
      "ADD_DBL_FIELD_1" NUMBER(38,0),
      "ADD_STR_FIELD_2" VARCHAR2(200 BYTE),
      "ADD_LNG_FIELD_2" NUMBER(38,0),
      "ADD_DBL_FIELD_2" NUMBER(38,0),
      "ADD_STR_FIELD_3" VARCHAR2(200 BYTE),
      "ADD_LNG_FIELD_3" NUMBER(38,0),
      "ADD_DBL_FIELD_3" NUMBER(38,0),
      "ADD_STR_FIELD_4" VARCHAR2(200 BYTE),
      "ADD_LNG_FIELD_4" NUMBER(38,0),
      "ADD_DBL_FIELD_4" NUMBER(38,0),
      "ADD_STR_FIELD_5" VARCHAR2(200 BYTE),
      "ADD_LNG_FIELD_5" NUMBER(38,0),
      "ADD_DBL_FIELD_5" NUMBER(38,0),
      "ADD_STR_FIELD_6" VARCHAR2(200 BYTE),
      "ADD_LNG_FIELD_6" NUMBER(38,0),
      "ADD_DBL_FIELD_6" NUMBER(38,0),
      "ADD_STR_FIELD_7" VARCHAR2(200 BYTE),
      "ADD_LNG_FIELD_7" NUMBER(38,0),
      "ADD_DBL_FIELD_7" NUMBER(38,0),
      "ADD_STR_FIELD_8" VARCHAR2(200 BYTE),
      "ADD_LNG_FIELD_8" NUMBER(38,0),
      "ADD_DBL_FIELD_8" NUMBER(38,0),
      "ADD_STR_FIELD_9" VARCHAR2(200 BYTE),
      "ADD_LNG_FIELD_9" NUMBER(38,0),
      "ADD_DBL_FIELD_9" NUMBER(38,0),
  }
  </code></pre>
  
  <p>I plan to define simple classes for each table</p>
  
  <pre><code>import javax.persistence.Entity;
  import javax.persistence.Id;
  import javax.persistence.Table;
  
  @Entity
  @Table(name="XX")
  public class XX {
  
      @Id
      Long id = null;
  }
  </code></pre>
  
  <p>and then define the common additional parameters in a common class</p>
  
  <pre><code>import javax.persistence.Column;
  
  public abstract class AdditionalParameters {
  
      @Column(name="ADD_STR_FIELD_0")
      private String addStringField0 = null;
      @Column(name="ADD_LNG_FIELD_0")
      private Long addLongField0 = null;
      @Column(name="ADD_DBL_FIELD_0")
      private Double addDoubleField0 = null;
      ....
      ....
      ....
      @Column(name="ADD_STR_FIELD_8")
      private String addStringField8 = null;
      @Column(name="ADD_LNG_FIELD_8")
      private Long addLongField8 = null;
      @Column(name="ADD_DBL_FIELD_8")
      private Double addDoubleField8 = null;
  }
  </code></pre>
  
  <p>while this will work, i don't like the hardcoded nature of the class. </p>
  
  <p>I would like to model each set of string,long and double fields as an additional parameter group, and then
  have 0..9 groups. This would allow me easily add extra groups later if required.</p>
  
  <p>If i use the xml mapping solution i can dynamically determine the correct column name when generating the .hbm.xml
  for each table. I would prefer to use an annotated solution, but is there a way to override the @Column getName() method
  so that i can return a dynamically generated column name?</p>