MongoDB 3.0 java driver Codec example - base class for the Codec mapping (bean)

Grades.java

/*
   MongoDB bean object for java 3.0 driver mapping
*/

package org.scratch;

import org.bson.BsonDocument;
import org.bson.BsonDocumentWrapper;
import org.bson.codecs.configuration.CodecRegistry;
import org.bson.conversions.Bson;
import org.bson.types.ObjectId;

public class Grades implements Bson {

   private ObjectId _id;
   private int studentId;
   private String type;
   private double score;

   public Grades() {
   }

   public Grades(int id, String type, double score) {
      this.studentId = id;
      this.type = type;
      this.score = score;
   }

   public Grades withNewObjectId() {
      setId(new ObjectId());
      return this;
   }

   public org.bson.types.ObjectId getId() {
      return _id;
   }

   public void setId(ObjectId _id) {
      this._id = _id;
   }

   public int getStudentId() {
      return studentId;
   }

   public void setStudentId(int studentId) {
      this.studentId = studentId;
   }

   public String getType() {
      return type;
   }

   public void setType(String type) {
      this.type = type;
   }

   public double getScore() {
      return score;
   }

   public void setScore(double score) {
      this.score = score;
   }

   @Override
   public <TDocument> BsonDocument toBsonDocument(Class<TDocument> documentClass,
         CodecRegistry codecRegistry) {
      return new BsonDocumentWrapper<Grades>(this, codecRegistry.get(Grades.class));
   }

   @Override
   public String toString() {
      return "Grades [_id=" + _id + ", studentId=" + studentId + ", type=" + type + ", score="
            + score + "]";
   }

}