org.easybatch.extensions.msexcel.MsExcelRecordWriter.java Source code

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Here is the source code for org.easybatch.extensions.msexcel.MsExcelRecordWriter.java

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/**
 * The MIT License
 *
 *   Copyright (c) 2017, Mahmoud Ben Hassine (mahmoud.benhassine@icloud.com)
 *
 *   Permission is hereby granted, free of charge, to any person obtaining a copy
 *   of this software and associated documentation files (the "Software"), to deal
 *   in the Software without restriction, including without limitation the rights
 *   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *   copies of the Software, and to permit persons to whom the Software is
 *   furnished to do so, subject to the following conditions:
 *
 *   The above copyright notice and this permission notice shall be included in
 *   all copies or substantial portions of the Software.
 *
 *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 *   THE SOFTWARE.
 */
package org.easybatch.extensions.msexcel;

import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.easybatch.core.record.Batch;
import org.easybatch.core.record.Record;
import org.easybatch.core.writer.RecordWriter;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

/**
 * Writer that write {@link MsExcelRecord} to a file.
 *
 * @author Mahmoud Ben Hassine (mahmoud.benhassine@icloud.com)
 */
public class MsExcelRecordWriter implements RecordWriter {

    private File file;

    private XSSFWorkbook workbook;

    private XSSFSheet sheet;

    /**
     * Create a new {@link MsExcelRecordWriter}.
     *
     * @param file      the output file
     * @param sheetName the sheet name
     * @throws IOException when an error occurs during record writing
     */
    public MsExcelRecordWriter(final File file, final String sheetName) throws IOException {
        this.file = file;
        workbook = new XSSFWorkbook();
        sheet = workbook.createSheet(sheetName);
    }

    private void setValue(XSSFCell cell, Cell next) {
        switch (next.getCellType()) {
        case Cell.CELL_TYPE_BOOLEAN:
            cell.setCellValue(next.getBooleanCellValue());
            cell.setCellType(Cell.CELL_TYPE_BOOLEAN);
            break;
        case Cell.CELL_TYPE_NUMERIC:
            cell.setCellValue(next.getNumericCellValue());
            cell.setCellType(Cell.CELL_TYPE_NUMERIC);
            break;
        case Cell.CELL_TYPE_STRING:
            cell.setCellValue(next.getStringCellValue());
            cell.setCellType(Cell.CELL_TYPE_STRING);
            break;
        case Cell.CELL_TYPE_FORMULA:
            cell.setCellValue(next.getCellFormula());
            cell.setCellType(Cell.CELL_TYPE_FORMULA);
            break;
        }
    }

    @Override
    public void open() throws Exception {

    }

    @Override
    public void writeRecords(Batch batch) throws Exception {
        for (Record record : batch) {
            XSSFRow row = sheet.createRow(sheet.getLastRowNum() + 1);
            int i = 0;
            int lastCellNum = ((Row) record.getPayload()).getLastCellNum();
            for (int index = 0; index < lastCellNum; index++) {
                Cell nextCell = ((Row) record.getPayload()).getCell(index);
                XSSFCell cell = row.createCell(i++);
                setValue(cell, nextCell);
            }
        }
        FileOutputStream fileOutputStream = new FileOutputStream(file);
        workbook.write(fileOutputStream);
    }

    @Override
    public void close() throws Exception {
        workbook.close();
    }
}