Using different field when overriding computeNorm

[Tsvika Rabkin]

Hi,

I would like to override default similarity's computeNorm to work with
a different field, other than the query field.

Here is the DefaultSimilarity implementation:

@Override
  public float computeNorm(String field, FieldInvertState state) {
    final int numTerms;
    if (discountOverlaps)
      numTerms = state.getLength() - state.getNumOverlap();
    else
      numTerms = state.getLength();
    return state.getBoost() * ((float) (1.0 / Math.sqrt(numTerms)));
  }

any ideas how to do that?

Thanks,

Tsvika

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