On 03/05/2011 15:06, Robert Muir wrote:
On Tue, May 3, 2011 at 9:57 AM, Paul Taylor<paul_t...@fastmail.fm> wrote:
How can I convert this Similariity method to use 3.1 (currently using
3.0.3), I understand I have to replace lengthNorm() wuth computerNorm() ,
but fieldlName is not a provided parameter in computerNorm() and
FieldInvertState does not contain the fieldname either.
Hi, I think you made a mistake, it does take fieldname:
http://lucene.apache.org/java/3_1_0/api/core/org/apache/lucene/search/Similarity.html#computeNorm(java.lang.String,
org.apache.lucene.index.FieldInvertState)
Doh thanks, not having a good few days, trying to do to much at once.
I assume this would be the correct way to fix the code for 3.1.0
public float computeNorm(String field, FieldInvertState state) {
//This will match both artist and label aliases and is
applicable to both, didn't use the constant
//ArtistIndexField.ALIAS because that would be confusing
if (field.equals("alias")) {
return state.getBoost() * 0.578f; //Same result as normal
calc if field had three terms the most common scenario
}
else
{
return super.computeNorm(field,state);
}
}
Paul
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