107 lines
3.2 KiB
Java
107 lines
3.2 KiB
Java
/*
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* IK 中文分词 版本 8.1.1
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* IK Analyzer release 8.1.1
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* 源代码由林良益(linliangyi2005@gmail.com)提供
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* 版权声明 2012，乌龙茶工作室
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* provided by Linliangyi and copyright 2012 by Oolong studio
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*
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* 8.1.1版本 由 Magese (magese@live.cn) 更新
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* release 8.1.1 update by Magese(magese@live.cn)
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*
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*/
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package org.wltea.analyzer.lucene;
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import java.io.IOException;
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import java.util.Vector;
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/**
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* 更新扩展词典子线程类
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*/
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public class UpdateThread implements Runnable {
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private static final long INTERVAL = 30000L; // 循环等待时间
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private Vector<UpdateJob> filterFactorys; // 更新任务集合
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/**
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* 私有化构造器，阻止外部进行实例化
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*/
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private UpdateThread() {
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this.filterFactorys = new Vector<>();
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Thread worker = new Thread(this);
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worker.setDaemon(true);
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worker.start();
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}
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/**
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* 静态内部类，实现线程安全单例模式
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*/
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private static class Builder {
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private static UpdateThread singleton = new UpdateThread();
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}
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/**
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* 获取本类的实例
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* 线程安全单例模式
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*
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* @return 本类的实例
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*/
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static UpdateThread getInstance() {
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return UpdateThread.Builder.singleton;
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}
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/**
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* 将运行中的IK分词工厂实例注册到本类定时任务中
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*
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* @param filterFactory 运行中的IK分词器
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*/
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void register(UpdateJob filterFactory) {
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this.filterFactorys.add(filterFactory);
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}
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/**
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* 子线程执行任务
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*/
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@Override
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public void run() {
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//noinspection InfiniteLoopStatement
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while (true) {
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try {
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Thread.sleep(INTERVAL);
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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// 如果更新字典任务集合不为空
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if (!this.filterFactorys.isEmpty()) {
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// 进行循环并执行更新
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for (UpdateJob factory : this.filterFactorys) {
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try {
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factory.update();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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}
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}
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public interface UpdateJob {
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void update() throws IOException;
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}
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}
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