no.magott.training.ex2.ExchangeRateFieldSetMapper.java Source code

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Here is the source code for no.magott.training.ex2.ExchangeRateFieldSetMapper.java

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/*
 * Copyright 2011 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 no.magott.training.ex2;

import org.apache.commons.lang.StringUtils;
import org.springframework.batch.item.file.LineCallbackHandler;
import org.springframework.batch.item.file.mapping.FieldSetMapper;
import org.springframework.batch.item.file.transform.FieldSet;
import org.springframework.validation.BindException;

/**
 * @author Morten Andersen-Gott
 * 
 */
public class ExchangeRateFieldSetMapper implements FieldSetMapper<ExchangeRate>, LineCallbackHandler {

    private String fromCurrency;
    private String toCurrency;

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.springframework.batch.item.file.mapping.FieldSetMapper#mapFieldSet
     * (org.springframework.batch.item.file.transform.FieldSet)
     */
    @Override
    public ExchangeRate mapFieldSet(FieldSet fieldSet) throws BindException {
        ExchangeRate exchangeRate = new ExchangeRate();
        exchangeRate.setDate(fieldSet.readDate("Date", "yyyy-MM-dd"));
        String exchangeRateAsString = fieldSet.readString("ExchangeRate");
        if (!exchangeRateAsString.trim().equals("-")) {
            exchangeRate.setExchangeRate(Double.parseDouble(exchangeRateAsString));
        }

        exchangeRate.setFrom(fromCurrency);
        exchangeRate.setTo(toCurrency);
        return exchangeRate;
    }

    @Override
    public void handleLine(String line) {
        if (line.startsWith(",EXR")) {
            String removeStart = StringUtils.removeStart(line, ",");
            String[] tokens = StringUtils.split(removeStart, ".");
            fromCurrency = tokens[2];
            toCurrency = tokens[3];
        }

    }

}