001/**
002 * Copyright (c) 2012, The University of Southampton and the individual contributors.
003 * All rights reserved.
004 *
005 * Redistribution and use in source and binary forms, with or without modification,
006 * are permitted provided that the following conditions are met:
007 *
008 *   *  Redistributions of source code must retain the above copyright notice,
009 *      this list of conditions and the following disclaimer.
010 *
011 *   *  Redistributions in binary form must reproduce the above copyright notice,
012 *      this list of conditions and the following disclaimer in the documentation
013 *      and/or other materials provided with the distribution.
014 *
015 *   *  Neither the name of the University of Southampton nor the names of its
016 *      contributors may be used to endorse or promote products derived from this
017 *      software without specific prior written permission.
018 *
019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
020 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
021 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
022 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
023 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
025 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
026 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
027 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
028 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
029 */
030package org.openimaj.twitter.collection;
031
032import java.io.DataOutput;
033import java.io.IOException;
034import java.io.PrintWriter;
035
036import org.openimaj.io.Writeable;
037import org.openimaj.twitter.GeneralJSON;
038import org.openimaj.twitter.USMFStatus;
039
040/**
041 * This wrapper allows the writing of a list such that each element is converted using a conversion function
042 * @author Sina Samangooei (ss@ecs.soton.ac.uk)
043 * @author Jonathon Hare (jsh2@ecs.soton.ac.uk), 
044 *
045 */
046public class ConvertUSMFList implements Writeable{
047        
048        private TwitterStatusList<? extends USMFStatus> list;
049        private Class<? extends GeneralJSON> convert;
050
051        /**
052         * @param list the list being written
053         * @param convertType type to convert to
054         */
055        public ConvertUSMFList(TwitterStatusList<? extends USMFStatus> list, Class<? extends GeneralJSON> convertType) {
056                this.list = list;
057                this.convert = convertType;
058        }
059        
060        @Override
061        public void writeASCII(PrintWriter writer) throws IOException {
062                for (USMFStatus k : this.list) {
063                        GeneralJSON newInstance = TwitterStatusListUtils.newInstance(convert);
064                        newInstance.fromUSMF(k);
065                        newInstance.writeASCII(writer);
066                        writer.println();
067                        
068                }
069        }
070
071        @Override
072        public String asciiHeader() {
073                return list.asciiHeader();
074        }
075
076        @Override
077        public void writeBinary(DataOutput out) throws IOException {
078                list.writeBinary(out);// not supported
079        }
080
081        @Override
082        public byte[] binaryHeader() {
083                return list.binaryHeader();// not supported;
084        }
085        
086
087}