[jira] [Created] (NETBEANS-4512) Add support of inheritance in generated equals hashcode

["Pavel_K (Jira)" <ji...@apache.org>]

Pavel_K created NETBEANS-4512:
---------------------------------

             Summary: Add support of inheritance in generated equals hashcode 
                 Key: NETBEANS-4512
                 URL: https://issues.apache.org/jira/browse/NETBEANS-4512
             Project: NetBeans
          Issue Type: New Feature
    Affects Versions: 12.0
            Reporter: Pavel_K


Lets suppose we have two classes - A and B with one field in every class. B extends A. NetBeans generates the following equals and hashCode:

 
{code:java}
public class A {
    
    private String Foo;

    @Override
    public int hashCode() {
        int hash = 7;
        hash = 67 * hash + Objects.hashCode(this.Foo);
        return hash;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final A other = (A) obj;
        if (!Objects.equals(this.Foo, other.Foo)) {
            return false;
        }
        return true;
    }
    
} 

public class B extends A {
    
    private String bar;

    @Override
    public int hashCode() {
        int hash = 7;
        hash = 89 * hash + Objects.hashCode(this.bar);
        return hash;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final B other = (B) obj;
        if (!Objects.equals(this.bar, other.bar)) {
            return false;
        }
        return true;
    }
}

{code}
 
As we see A.equals and A.hashCode are not considered in generated B.equals and B.hashCode. The problem was also discussed here: https://stackoverflow.com/a/2067401/5057736 . 

So, I suggest to add boolean flag to these two forms like "Inheritance support" and generate equals and hashCode with inheritance support.



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