/*
    * Copyright 2006-2007 the original author or authors.
    *
    * Licensed 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.springframework.batch.repeat.support;
  
  import java.util.List;
  
  import org.junit.Before;
  import org.springframework.batch.item.ExecutionContext;
  import org.springframework.batch.item.ItemWriter;
  import org.springframework.batch.item.file.FlatFileItemReader;
  import org.springframework.batch.item.file.mapping.DefaultLineMapper;
  import org.springframework.batch.item.file.mapping.FieldSetMapper;
  import org.springframework.batch.item.file.transform.DelimitedLineTokenizer;
  import org.springframework.batch.item.file.transform.FieldSet;
  import org.springframework.core.io.ClassPathResource;
  import org.springframework.core.io.Resource;
  
  /**
   * Base class for simple tests with small trade data set.
   *
   * @author Dave Syer
   *
   */
  public abstract class AbstractTradeBatchTests {
  
  	public static final int NUMBER_OF_ITEMS = 5;
  
  	Resource resource = new ClassPathResource("trades.csv", getClass());
  
  	protected TradeWriter processor = new TradeWriter();
  
  	protected TradeItemReader provider;
  
  	@Before
  	public void setUp() throws Exception {
  		provider = new TradeItemReader(resource);
  		provider.open(new ExecutionContext());
  	}
  
  	protected static class TradeItemReader extends FlatFileItemReader<Trade> {
  
  		protected TradeItemReader(Resource resource) throws Exception {
  			super();
  			setResource(resource);
  			DefaultLineMapper<Trade> mapper = new DefaultLineMapper<Trade>();
  			mapper.setLineTokenizer(new DelimitedLineTokenizer());
  			mapper.setFieldSetMapper(new TradeMapper());
  			setLineMapper(mapper);
  			afterPropertiesSet();
  		}
  
  	}
  
  	protected static class TradeMapper implements FieldSetMapper<Trade> {
  		public Trade mapFieldSet(FieldSet fs) {
  			return new Trade(fs);
  		}
  	}
  
  	protected static class TradeWriter implements ItemWriter<Trade> {
  		int count = 0;
  
  		// This has to be synchronized because we are going to test the state
  		// (count) at the end of a concurrent batch run.
  		public synchronized void write(List<? extends Trade> data) {
  			count++;
  			System.out.println("Executing trade '" + data + "'");
  		}
  	}
  
  }