Does the function reuse way violate the information hiding?

[avseq anthoy]

Dear all
I have some querstion for design.
If I have a function , it will return person information including name,mail and personNo.
So the function will be as below

  
public Person getPerson( String id )
{
    // 
    // some logic
   //
    ...
    Person p = new Person();
    p.setName("abc");
    p.setMail("[e-mail]");
    p.setPersonNo(1);
    return p;
}
 

But now I have a new user request , it only needs the persion information including name and mail.

Question 1 :
Should I reuse the existing funciton? It includes all the information but the personNo is unnecessary;
Will I violate information hiding If I reuse the existing function?

Question 2:
I can remove the uncessary information by writing new funciton as below.

public Person getPersonInfo( String id )
{
   Persion p = this.getPerson(id);
   p.setPersonNo(0);
  return p;
}

public Person getPerson( String id )
{
    // 
    // some logic
   //
    ...
    Person p = new Person();
    p.setName("abc");
    p.setMail("[e-mail]");
    p.setPersonNo(1);
    return p;
}

This way will be good for information hiding.
But there are many dumb new function should be writed when users raise similar requests.
Can combody give me a suggestion how should I do in this situation?

[David Newton]

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[David Newton]

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