| /* |
| * 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. |
| */ |
| |
| /** |
| * <p>Subcollection is a subset of an index. Subcollections are |
| * defined by urlpatterns in form of white/blacklist. So to get the |
| * page into subcollection it must match the whitelist and not |
| * the blacklist.</p> |
| * <p> Subcollection definitions are read from a file |
| * <code>subcollections.xml</code> and the format is as follows |
| * (imagine here that you are crawling all the virtualhosts from |
| * apache.org and you want to tag pages with url pattern |
| * "https://nutch.apache.org" and |
| * "https://cwiki.apache.org/confluence/display/nutch" to be part of |
| * subcollection "nutch", this allows you to later search specifically |
| * from this subcollection)</p> |
| * <pre> |
| * {@code |
| * <xml version="1.0" encoding="UTF-8"?> |
| * <subcollections> |
| * <subcollection> |
| * <name>nutch</name> |
| * <id>nutch</id> |
| * <whitelist>https://nutch.apache.org</whitelist> |
| * <whitelist>https://cwiki.apache.org/confluence/display/nutch</whitelist> |
| * <blacklist /> |
| * </subcollection> |
| * </subcollections> |
| * } |
| * </pre> |
| * <p>Despite of this configuration you still can crawl any urls |
| * as long as they pass through your global url filters. (note that |
| * you must also seed your urls in normal nutch way)</p> |
| */ |
| package org.apache.nutch.collection; |
