| /**************************************************************** |
| * 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.james.ai.classic; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Periodically reloads corpus. |
| */ |
| class CorpusLoaderThread extends Thread { |
| private static final Logger LOGGER = LoggerFactory.getLogger(CorpusLoaderThread.class); |
| |
| private final BayesianAnalysis analysis; |
| |
| CorpusLoaderThread(BayesianAnalysis analysis) { |
| super("BayesianAnalysis Corpus Loader"); |
| this.analysis = analysis; |
| } |
| |
| /** |
| * Thread entry point. |
| */ |
| @Override |
| public void run() { |
| LOGGER.info("CorpusLoader thread started: will wake up every " + BayesianAnalysis.CORPUS_RELOAD_INTERVAL + " ms"); |
| |
| try { |
| Thread.sleep(BayesianAnalysis.CORPUS_RELOAD_INTERVAL); |
| |
| while (true) { |
| if (analysis.getLastCorpusLoadTime() < JDBCBayesianAnalyzer.getLastDatabaseUpdateTime()) { |
| LOGGER.info("Reloading Corpus ..."); |
| try { |
| analysis.loadData(analysis.datasource.getConnection()); |
| LOGGER.info("Corpus reloaded"); |
| } catch (java.sql.SQLException se) { |
| LOGGER.error("SQLException: ", se); |
| } |
| |
| } |
| |
| if (Thread.interrupted()) { |
| break; |
| } |
| Thread.sleep(BayesianAnalysis.CORPUS_RELOAD_INTERVAL); |
| } |
| } catch (InterruptedException ex) { |
| interrupt(); |
| } |
| } |
| |
| } |