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From "Chantal Ackermann (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SOLR-3136) FacetField and Count : Override equals() and hashCode()
Date Wed, 15 Feb 2012 17:10:59 GMT
FacetField and Count : Override equals() and hashCode()
-------------------------------------------------------

                 Key: SOLR-3136
                 URL: https://issues.apache.org/jira/browse/SOLR-3136
             Project: Solr
          Issue Type: Improvement
          Components: clients - java
    Affects Versions: 3.5
            Reporter: Chantal Ackermann
            Priority: Trivial


Overriding equals() and hashCode() of FacetField and Count to provide equality based on content
(on their properties) would allow using these classes in sets and as keys in maps.

Implementation via commons-lang (which is already a dependency) should be fairly straight
forward?

For FacetFields, compare name, gap and end but not the list of counts:

public boolean equals(Object o) {
  if (o != null && o instanceof FacetField) {
    FacetField ff = (FacetField)o;
    return new EqualsBuilder().append(_name, ff._name).append(_gap, ff._gap).append(_end,
ff._end).isEquals();
  }
  return false;
}
public int hashCode() {
  return new HashCodeBuilder(33,11).append(_name).append(_gap).append(_end).toHashCode();
}

For Count compare FacetField, name and count:
public boolean equals(Object o) {
  if (o != null && o instanceof Count) {
    Count c = (Count)o;
    return new EqualsBuilder().append(_ff, c._ff).append(_name, c._name).append(_count, c._count).isEquals();
  }
  return false;
}
public int hashCode() {
  return new HashCodeBuilder(35,17).append(_ff).append(_name).append(_count).toHashCode();
}


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