Revision a18a4ca4

b/src/gr/ebs/gss/server/domain/AccountingInfo.java
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import javax.persistence.Id;
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import javax.persistence.JoinColumn;
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import javax.persistence.ManyToOne;
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import javax.persistence.Table;
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import javax.persistence.Temporal;
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import javax.persistence.TemporalType;
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import javax.persistence.UniqueConstraint;
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import javax.persistence.Version;
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/**


  		





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 * This class holds information about bandwidth usage by users.


  		





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 * This information is broken down in time periods.


  		





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 */


  		





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@Entity


  		





  
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@Table(name="accountinginfo", uniqueConstraints=@UniqueConstraint(columnNames={"user_id", "dateFrom", "dateTo"}))


  		





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public class AccountingInfo  implements Serializable{


  		





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	/**


  		





  ......




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	private Long id;


  		





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	/**


  		





  
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	 * Version field for optimistic locking.


  		





  
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	 * XXX: the columnDefinition is postgres specific, if deployment database is changed this shall be changed too


  		





  
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	 */


  		





  
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	@SuppressWarnings("unused")


  		





  
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	@Version


  		





  
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	@Column(columnDefinition=" integer DEFAULT 0")


  		





  
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	private int version;


  		





  
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	/**


  		





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	 * The user whose usage we are noting. We can never change it after


  		





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	 * creation.


  		





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	 */


  		





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	@ManyToOne


  		





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	@JoinColumn(updatable = false, nullable = false)


  		





  
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	@JoinColumn(name="user_id", updatable = false, nullable = false)


  		





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	private User user;


  		





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	/**


  		





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	 * creation.


  		





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	 */


  		





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	@Temporal(TemporalType.TIMESTAMP)


  		





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	@Column(updatable = false, nullable = false)


  		





  
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	@Column(name="dateFrom", updatable = false, nullable = false)


  		





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	private Date dateFrom;


  		





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	 * creation.


  		





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	 */


  		





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	@Temporal(TemporalType.TIMESTAMP)


  		





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	@Column(updatable = false, nullable = false)


  		





  
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	@Column(name="dateTo", updatable = false, nullable = false)


  		





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	private Date dateTo;


  		





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