Synchronize two pojos with like-named fields together

Question

I have two pojos.

public class Pojo1 implements Serializable {

    private static final long serialVersionUID = 1302290920579795856L;

    private Long id;
    private String idNumber; 
    private String vendorNumber; 
    private Date expires;

    // Getters and setters for each one
}

public class Pojo2 implements Serializable {

    private static final long serialVersionUID = 1302290920579795856L;

    private Long id;
    private String idNumber; 
    private String vendorNumber; 
    private Date expires;
    private String otherData;

    // Getters and setters for each one
}

Is there a Java API that I can use to create a Pojo1 from a Pojo2 automatically?

I.e.:

Pojo1 newPojo1 = SomeLibrary.fromPojoWithLikeNamedFields(pojo2);

// newPojo1 now has all the fields that had the same name from pojo2

http://stackoverflow.com/questions/5937567/copy-pojo-content-from-one-bean-to-another — Nicholas DiPiazza, Dec 04 '12 at 17:24
You could use reflection to achieve this, invoking the setter with the value from the relevant getter... — GoofyHTS, Dec 04 '12 at 17:31
Why do you need Pojo?. It's the same type. Even the serialVersionUID is identical. — Gervase, Jan 23 '15 at 19:10

score -1 · Answer 1 · answered Dec 04 '12 at 17:27

-1

won't a copy constructor do the job?,

public Pojo1(Pojo2 pojo2){
    this.id = pojo2.getId();
    this.idNumber = pojo2.getIdNumber();
    this.vendorNumber = pojo2.getVendorNumber();
    this.expires = pojo2.getExpires();
}

and then use as such,

Pojo1 newPojo1 = new Pojo1(pojo2);

or am I misunderstanding something...?

answered Dec 04 '12 at 17:27

mre

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+1 (sry, over my daily limit). I think the same as you. Only thing I would change is to call getters, because his attributes are private. – jlordo Dec 04 '12 at 17:31
He doesn't want to have to write the copy constructor in the first place. – Thorn G Dec 04 '12 at 17:31
@jlordo, Excellent point, I completely overlooked that; modified code to use getters! :) – mre Dec 04 '12 at 17:32
@TomG, I think including this copy constructor makes much more sense than using a third party library. – mre Dec 04 '12 at 17:49
1

I totally agree, and did not downvote you -- just pointing out that the original question implied a generic approach to any two POJOs with similar bean properties, as I read it. – Thorn G Dec 04 '12 at 18:35
I'm downvoting this - doesn't use reflection - this serves no purpose i can already copy paste each one – Nicholas DiPiazza Dec 04 '12 at 18:40

Synchronize two pojos with like-named fields together

1 Answers1