001/*
002 * Copyright 2014 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.springframework.batch.sample.jsr352;
017
018import java.util.ArrayList;
019import java.util.List;
020import javax.batch.api.chunk.AbstractItemReader;
021
022import org.apache.commons.logging.Log;
023import org.apache.commons.logging.LogFactory;
024
025/**
026 * <p>
027 * Sample {@link javax.batch.api.chunk.ItemReader} implementation.
028 * </p>
029 *
030 * @since 3.0
031 * @author Chris Schaefer
032 */
033@SuppressWarnings("serial")
034public class JsrSampleItemReader extends AbstractItemReader {
035        private static final Log LOG = LogFactory.getLog(JsrSampleItemReader.class);
036
037        private List<String> people = new ArrayList<String>() {{
038                add("John");
039                add("Joe");
040                add("Mark");
041                add("Jane");
042        }};
043
044        @Override
045        public Object readItem() throws Exception {
046                String person = null;
047
048                if(people.iterator().hasNext()) {
049                        person = people.iterator().next();
050                        people.remove(person);
051
052                        LOG.info("Read person: " + person);
053                }
054
055                return person;
056        }
057}