/*
* Copyright (C) 2008-2015 by Holger Arndt
*
* This file is part of the Universal Java Matrix Package (UJMP).
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership and licensing.
*
* UJMP is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* UJMP is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with UJMP; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
package org.ujmp.poi;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Date;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.ujmp.core.Matrix;
import org.ujmp.core.util.StringUtil;
public abstract class AbstractMatrixExcelExporter {
public void exportToExcelFile(final Workbook workbook, final Matrix matrix, final File file, String sheetName)
throws IOException {
final Sheet sheet = workbook.createSheet(sheetName);
final int rowCount = (int) matrix.getRowCount();
final int columnCount = (int) matrix.getColumnCount();
for (int r = 0; r < rowCount; r++) {
Row row = sheet.createRow(r);
for (int c = 0; c < columnCount; c++) {
Object o = matrix.getAsObject(r, c);
if (o != null) {
Cell cell = row.createCell(c);
if (o instanceof Double) {
cell.setCellValue((Double) o);
} else if (o instanceof String) {
cell.setCellValue((String) o);
} else if (o instanceof Date) {
cell.setCellValue((Date) o);
} else if (o instanceof Boolean) {
cell.setCellValue((Boolean) o);
} else {
cell.setCellValue(StringUtil.convert(o));
}
}
}
}
final FileOutputStream fileOutputStream = new FileOutputStream(file);
final BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(fileOutputStream);
workbook.write(fileOutputStream);
bufferedOutputStream.close();
fileOutputStream.close();
}
}