| /* |
| * 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.parse; |
| |
| import org.apache.hadoop.conf.Configurable; |
| |
| import org.apache.nutch.plugin.Pluggable; |
| import org.apache.nutch.protocol.Content; |
| |
| /** |
| * A parser for content generated by a |
| * {@link org.apache.nutch.protocol.Protocol} implementation. This interface is |
| * implemented by extensions. Nutch's core contains no page parsing code. |
| */ |
| public interface Parser extends Pluggable, Configurable { |
| /** The name of the extension point. */ |
| public final static String X_POINT_ID = Parser.class.getName(); |
| |
| /** |
| * <p> |
| * This method parses the given content and returns a map of <key, |
| * parse> pairs. {@link Parse} instances will be persisted under the given |
| * key. |
| * </p> |
| * <p> |
| * Note: Meta-redirects should be followed only when they are coming from the |
| * original URL. That is: <br> |
| * Assume fetcher is in parsing mode and is currently processing |
| * foo.bar.com/redirect.html. If this url contains a meta redirect to another |
| * url, fetcher should only follow the redirect if the map contains an entry |
| * of the form <"foo.bar.com/redirect.html", {@link Parse} with a |
| * {@link ParseStatus} indicating the redirect>. |
| * </p> |
| * |
| * @param c |
| * Content to be parsed |
| * @return a map containing <key, parse> pairs |
| * @since NUTCH-443 |
| */ |
| ParseResult getParse(Content c); |
| } |