codeKata04.DataImporter.java Source code

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Here is the source code for codeKata04.DataImporter.java

Source

/*
 * Copyright (c) 2016.
 *  This is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or any later version.
 */

package codeKata04;

import codeKata04.interfaces.ImportableData;
import codeKata04.interfaces.ImportableDataFactory;
import codeKata04.interfaces.ImportableDataParameter;
import org.apache.commons.io.FileUtils;

import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class DataImporter {

    /**
     * Imports data into the targetlist
     * @param file the file holding the data
     * @param targetList the target list of the import
     * @param factory the factory with the information of init parameters and creating new instances
     */
    void importDataToList(File file, List<ImportableData> targetList, ImportableDataFactory factory) {
        try {

            List<String> lines = FileUtils.readLines(file);
            Pattern pattern = Pattern.compile(factory.getRegex());
            Matcher matcher;

            List<ImportableDataParameter> initParameters = factory.getInitParameters();

            for (String line : lines) {
                matcher = pattern.matcher(line);
                if (matcher.find()) {

                    for (ImportableDataParameter initParameter : initParameters) {
                        initParameter.setValue(matcher.group(initParameter.getIdx()));
                    }

                    ImportableData instance = factory.createInstance(initParameters);
                    targetList.add(instance);

                }
            }

        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}