| package org.apache.lucene.search; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| import java.io.IOException; |
| |
| /** A Scorer for OR like queries, counterpart of <code>ConjunctionScorer</code>. |
| * This Scorer implements {@link Scorer#advance(int)} and uses advance() on the given Scorers. |
| */ |
| final class DisjunctionSumScorer extends DisjunctionScorer { |
| private double score; |
| private final float[] coord; |
| |
| /** Construct a <code>DisjunctionScorer</code>. |
| * @param weight The weight to be used. |
| * @param subScorers Array of at least two subscorers. |
| * @param coord Table of coordination factors |
| */ |
| DisjunctionSumScorer(Weight weight, Scorer[] subScorers, float[] coord) { |
| super(weight, subScorers); |
| this.coord = coord; |
| } |
| |
| @Override |
| protected void reset() { |
| score = 0; |
| } |
| |
| @Override |
| protected void accum(Scorer subScorer) throws IOException { |
| score += subScorer.score(); |
| } |
| |
| @Override |
| protected float getFinal() { |
| return (float)score * coord[freq]; |
| } |
| } |