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OptaPlanner solves planning problems.
This lightweight, embeddable planning engine implements powerful and scalable algorithms
to optimize business resource scheduling and planning.
This module contains the examples which demonstrate how to use it in a normal Java application.
/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* 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 org.optaplanner.examples.common.persistence;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.io.IOUtils;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.optaplanner.core.api.domain.solution.Solution;
public abstract class AbstractXlsxSolutionImporter extends AbstractSolutionImporter {
private static final String DEFAULT_INPUT_FILE_SUFFIX = "xlsx";
protected AbstractXlsxSolutionImporter(SolutionDao solutionDao) {
super(solutionDao);
}
protected AbstractXlsxSolutionImporter(boolean withoutDao) {
super(withoutDao);
}
public String getInputFileSuffix() {
return DEFAULT_INPUT_FILE_SUFFIX;
}
public abstract XslxInputBuilder createXslxInputBuilder();
public Solution readSolution(File inputFile) {
Solution solution;
InputStream in = null;
try {
in = new FileInputStream(inputFile);
XSSFWorkbook workbook = new XSSFWorkbook(in);
XslxInputBuilder xlsxInputBuilder = createXslxInputBuilder();
xlsxInputBuilder.setInputFile(inputFile);
xlsxInputBuilder.setWorkbook(workbook);
try {
solution = xlsxInputBuilder.readSolution();
} catch (IllegalArgumentException e) {
throw new IllegalArgumentException("Exception in inputFile (" + inputFile + ")", e);
} catch (IllegalStateException e) {
throw new IllegalStateException("Exception in inputFile (" + inputFile + ")", e);
}
} catch (IOException e) {
throw new IllegalArgumentException("Could not read the file (" + inputFile.getName() + ").", e);
} finally {
IOUtils.closeQuietly(in);
}
logger.info("Imported: {}", inputFile);
return solution;
}
public static abstract class XslxInputBuilder extends InputBuilder {
protected File inputFile;
protected XSSFWorkbook workbook;
public void setInputFile(File inputFile) {
this.inputFile = inputFile;
}
public void setWorkbook(XSSFWorkbook document) {
this.workbook = document;
}
public abstract Solution readSolution() throws IOException;
// ************************************************************************
// Helper methods
// ************************************************************************
public String getInputId() {
return FilenameUtils.getBaseName(inputFile.getPath());
}
protected XSSFSheet readSheet(int index, String name) {
XSSFSheet sheet = workbook.getSheetAt(index);
if (!sheet.getSheetName().equals(name)) {
throw new IllegalArgumentException("The sheet (" + sheet.getSheetName() + ") at index (" + index
+ ") is expected to have another name (" + name + ")");
}
return sheet;
}
protected void assertCellConstant(Cell cell, String constant) {
if (!constant.equals(cell.getStringCellValue())) {
throw new IllegalArgumentException("The cell (" + cell.getRow().getRowNum() + ","
+ cell.getColumnIndex() + ") with value (" + cell.getStringCellValue()
+ ") is expected to have the constant (" + constant + ")");
}
}
protected long readLongCell(Cell cell) {
double d = cell.getNumericCellValue();
long l = (long) d;
if (d - (double) l != 0.0) {
throw new IllegalArgumentException("The keyCell (" + cell.getRow().getRowNum() + ","
+ cell.getColumnIndex() + ") with value (" + d + ") is expected to be a long.");
}
return l;
}
protected double readDoubleCell(Cell cell) {
return cell.getNumericCellValue();
}
protected String readStringCell(Cell cell) {
return cell.getStringCellValue();
}
protected String readStringParameter(Row row, String key) {
Cell keyCell = row.getCell(0);
if (!key.equals(keyCell.getStringCellValue())) {
throw new IllegalArgumentException("The keyCell (" + keyCell.getRow().getRowNum() + ","
+ keyCell.getColumnIndex() + ") with value (" + keyCell.getStringCellValue()
+ ") is expected to have the key (" + key + ")");
}
Cell valueCell = row.getCell(1);
return valueCell.getStringCellValue();
}
protected double readDoubleParameter(Row row, String key) {
Cell keyCell = row.getCell(0);
if (!key.equals(keyCell.getStringCellValue())) {
throw new IllegalArgumentException("The keyCell (" + keyCell.getRow().getRowNum() + ","
+ keyCell.getColumnIndex() + ") with value (" + keyCell.getStringCellValue()
+ ") is expected to have the key (" + key + ")");
}
Cell valueCell = row.getCell(1);
return valueCell.getNumericCellValue();
}
}
}