Example usage for org.apache.lucene.index FieldInvertState getOffset

Introduction

In this page you can find the example usage for org.apache.lucene.index FieldInvertState getOffset.

Prototype

public int getOffset() 

Source Link

Document

Get end offset of the last processed term.

Usage

From source file:org.archive.jbs.lucene.WebSimilarity.java

License:Apache License

/** Normalize field by length.  Called at index time. */
public float computeNorm(String fieldName, FieldInvertState state) {
    int numTokens = state.getLength();

    if ("url".equals(fieldName)) {
        // URL: prefer short by using linear normalization
        return 1.0f / numTokens;

    } else if ("content".equals(fieldName)) {
        // Content: penalize short, by treating short as longer

        // TODO: Is creating a new FieldInvertState object good, or
        //       should we modify the existing one?
        return super.computeNorm(fieldName,
                new FieldInvertState(state.getPosition(), Math.max(numTokens, MIN_CONTENT_LENGTH),
                        state.getNumOverlap(), state.getOffset(), state.getBoost()));
    } else {//from  ww w  . j av  a  2 s  .  co m
        // use default
        return super.computeNorm(fieldName, state);
    }
}

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