001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.camel.component.atom;
018    
019    import java.io.IOException;
020    import java.io.InputStream;
021    import java.net.URL;
022    
023    import org.apache.abdera.Abdera;
024    import org.apache.abdera.model.Document;
025    import org.apache.abdera.model.Feed;
026    import org.apache.abdera.parser.ParseException;
027    import org.apache.abdera.parser.Parser;
028    
029    /**
030     * Atom utilities.
031     */
032    public final class AtomUtils {
033    
034        private AtomUtils() {
035            // Helper class
036        }
037    
038        /**
039         * Gets the Atom parser.
040         */
041        public static Parser getAtomParser() {
042            return Abdera.getInstance().getParser();
043        }
044    
045        /**
046         * Parses the given uri and returns the response as a atom feed document.
047         *
048         * @param uri the uri for the atom feed.
049         * @return  the document
050         * @throws IOException is thrown if error reading from the uri
051         * @throws ParseException is thrown if the parsing failed
052         */
053        public static Document<Feed> parseDocument(String uri) throws IOException, ParseException {
054            InputStream in = new URL(uri).openStream();
055            return getAtomParser().parse(in);
056        }
057    
058    }