| /* |
| * 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.nutch.service.impl; |
| |
| import java.util.Map; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.util.ReflectionUtils; |
| import org.apache.nutch.service.JobManager.JobType; |
| import org.apache.nutch.crawl.CrawlDb; |
| import org.apache.nutch.crawl.DeduplicationJob; |
| import org.apache.nutch.crawl.Generator; |
| import org.apache.nutch.crawl.Injector; |
| import org.apache.nutch.crawl.LinkDb; |
| import org.apache.nutch.fetcher.Fetcher; |
| import org.apache.nutch.indexer.IndexingJob; |
| import org.apache.nutch.parse.ParseSegment; |
| import org.apache.nutch.util.NutchTool; |
| |
| import com.google.common.collect.Maps; |
| |
| public class JobFactory { |
| private static Map<JobType, Class<? extends NutchTool>> typeToClass; |
| |
| static { |
| typeToClass = Maps.newHashMap(); |
| typeToClass.put(JobType.INJECT, Injector.class); |
| typeToClass.put(JobType.GENERATE, Generator.class); |
| typeToClass.put(JobType.FETCH, Fetcher.class); |
| typeToClass.put(JobType.PARSE, ParseSegment.class); |
| typeToClass.put(JobType.INDEX, IndexingJob.class); |
| typeToClass.put(JobType.UPDATEDB, CrawlDb.class); |
| typeToClass.put(JobType.INVERTLINKS, LinkDb.class); |
| typeToClass.put(JobType.DEDUP, DeduplicationJob.class); |
| } |
| |
| public NutchTool createToolByType(JobType type, Configuration conf) { |
| if (!typeToClass.containsKey(type)) { |
| return null; |
| } |
| Class<? extends NutchTool> clz = typeToClass.get(type); |
| return createTool(clz, conf); |
| } |
| |
| @SuppressWarnings({ "rawtypes", "unchecked" }) |
| public NutchTool createToolByClassName(String className, Configuration conf) { |
| try { |
| Class clz = Class.forName(className); |
| return createTool(clz, conf); |
| } catch (ClassNotFoundException e) { |
| throw new IllegalStateException(e); |
| } |
| } |
| |
| private NutchTool createTool(Class<? extends NutchTool> clz, |
| Configuration conf) { |
| return ReflectionUtils.newInstance(clz, conf); |
| } |
| |
| } |