io.spring.marchmadness.BeforeJobNotification.java Source code

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Here is the source code for io.spring.marchmadness.BeforeJobNotification.java

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/*
 * Copyright 2016 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 io.spring.marchmadness;

import java.io.FileReader;
import java.util.List;

import javax.sql.DataSource;

import org.springframework.batch.core.JobExecution;
import org.springframework.batch.core.listener.JobExecutionListenerSupport;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Component;

/**
 * @author Glenn Renfro
 */
@Component
public class BeforeJobNotification extends JobExecutionListenerSupport {

    @Value("${input.filename:output.csv}")
    private String inputFile;

    @Autowired
    List<DataSource> dataSource;

    @Override
    public void beforeJob(JobExecution jobExecution) {
        JdbcTemplate template = new JdbcTemplate(dataSource.get(0));
        getYearFromData();
        template.execute("delete from NCAA_STATS where year = " + getYearFromData());
    }

    private String getYearFromData() {
        String result = null;
        try (FileReader reader = new FileReader(inputFile)) {
            char[] charArray = new char[4];
            reader.read(charArray, 0, 4);
            result = new String(charArray);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }
}