| 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; |
| import java.util.Collection; |
| |
| import org.apache.lucene.util.AttributeSource; |
| |
| /** |
| * A {@code FilterScorer} contains another {@code Scorer}, which it |
| * uses as its basic source of data, possibly transforming the data along the |
| * way or providing additional functionality. The class |
| * {@code FilterScorer} itself simply implements all abstract methods |
| * of {@code Scorer} with versions that pass all requests to the |
| * contained scorer. Subclasses of {@code FilterScorer} may |
| * further override some of these methods and may also provide additional |
| * methods and fields. |
| */ |
| abstract class FilterScorer extends Scorer { |
| protected final Scorer in; |
| |
| public FilterScorer(Scorer in) { |
| super(in.weight); |
| this.in = in; |
| } |
| |
| @Override |
| public float score() throws IOException { |
| return in.score(); |
| } |
| |
| @Override |
| public int freq() throws IOException { |
| return in.freq(); |
| } |
| |
| @Override |
| public int docID() { |
| return in.docID(); |
| } |
| |
| @Override |
| public int nextDoc() throws IOException { |
| return in.nextDoc(); |
| } |
| |
| @Override |
| public int advance(int target) throws IOException { |
| return in.advance(target); |
| } |
| |
| @Override |
| public long cost() { |
| return in.cost(); |
| } |
| |
| @Override |
| public AttributeSource attributes() { |
| return in.attributes(); |
| } |
| } |