Define a CallLog entity and its partition areaCode

CallLog.java

@Entity
public class CallLog extends ManagedEntity implements IManagedEntity
{
  @Attribute
  @Identifier(generator = IdentifierGenerator.SEQUENCE)
  protected long callLogId;
  
  @Attribute
  protected String destinationNumber;
  
  @Attribute
  protected Date timeDateStarted;
  
  @Index
  @Attribute
  protected boolean isNSAListening;
  
  @Relationship(type = RelationshipType.MANY_TO_ONE,
          inverseClass = CellPhone.class,
          inverse = "callLogs",
          cascadePolicy = CascadePolicy.NONE,
          fetchPolicy = FetchPolicy.NONE)
  protected CellPhone callFrom;
  
  @Attribute
  @Partition
  protected int callFromAreaCode;
  
  // getters and setters
}