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From "Vihung Marathe" <vihung.mara...@friendsprovident.co.uk>
Subject Suggestion for Clone Builder in commons-lang to assist with Cloneable and clone()
Date Tue, 21 Aug 2007 15:52:26 GMT
Given that it is considered 'good practice' for entity objects to be
Cloneable and to have a 'proper' clone() method, can I suggest that
there be a CloneBuilder builder along the lines of HashCodeBuilder et
al.

I would expect to use it in my implementation of clone() methods as
follows

  public Object clone() throws CloneNotSupportedException {
      return CloneBuilder.reflectionClone(this);
  }

to use reflection to build a generic clone

or

  public Object clone() throws CloneNotSupportedException {
      return new CloneBuilder(this)
          .append("field1")         // note the 'field by name' usage
          .append("field2")         // rather than 'field by value'
          ...
          .append("fieldn")
          .toClone()
      ;
  }

to build a clone from specific named fields.

-- Vihung
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