| /* |
| * 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. |
| */ |
| |
| package org.apache.geode.cache.lucene.internal.distributed; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| import org.apache.geode.DataSerializer; |
| import org.apache.geode.cache.lucene.LuceneQueryFactory; |
| import org.apache.geode.cache.lucene.internal.repository.IndexResultCollector; |
| import org.apache.geode.internal.serialization.DataSerializableFixedID; |
| import org.apache.geode.internal.serialization.DeserializationContext; |
| import org.apache.geode.internal.serialization.SerializationContext; |
| import org.apache.geode.internal.serialization.Version; |
| |
| /** |
| * An implementation of {@link IndexResultCollector} to collect {@link EntryScore}. It is expected |
| * that the results will be ordered by score of the entry. |
| */ |
| public class TopEntriesCollector implements IndexResultCollector, DataSerializableFixedID { |
| private String name; |
| |
| private TopEntries entries; |
| |
| public TopEntriesCollector() { |
| this(null); |
| } |
| |
| public TopEntriesCollector(String name) { |
| this(name, LuceneQueryFactory.DEFAULT_LIMIT); |
| } |
| |
| public TopEntriesCollector(String name, int limit) { |
| this.name = name; |
| this.entries = new TopEntries(limit); |
| } |
| |
| @Override |
| public void collect(Object key, float score) { |
| collect(new EntryScore(key, score)); |
| } |
| |
| public void collect(EntryScore entry) { |
| entries.addHit(entry); |
| } |
| |
| @Override |
| public String getName() { |
| return name; |
| } |
| |
| @Override |
| public int size() { |
| TopEntries entries = getEntries(); |
| return entries == null ? 0 : entries.size(); |
| } |
| |
| /** |
| * @return The entries collected by this collector |
| */ |
| public TopEntries getEntries() { |
| return entries; |
| } |
| |
| @Override |
| public Version[] getSerializationVersions() { |
| return null; |
| } |
| |
| @Override |
| public int getDSFID() { |
| return LUCENE_TOP_ENTRIES_COLLECTOR; |
| } |
| |
| @Override |
| public void toData(DataOutput out, |
| SerializationContext context) throws IOException { |
| DataSerializer.writeString(name, out); |
| context.getSerializer().writeObject(entries, out); |
| } |
| |
| @Override |
| public void fromData(DataInput in, |
| DeserializationContext context) throws IOException, ClassNotFoundException { |
| name = DataSerializer.readString(in); |
| entries = context.getDeserializer().readObject(in); |
| } |
| } |