/**
* Clones the expression. The expression should be reinitialized after the cloning.
*
* <p>Expressions maintain no state, cloning is done at the beginning of the report processing to
* disconnect the expression from any other object space.
*
* @return a clone of this expression.
* @throws CloneNotSupportedException this should never happen.
*/
public Object clone() throws CloneNotSupportedException {
final IndexDataGeneratorFunction o = (IndexDataGeneratorFunction) super.clone();
o.dataFormula = (FormulaExpression) dataFormula.clone();
o.pageFunction = (PageFunction) pageFunction.clone();
return o;
}
