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investment: read the spreadsheet file directly
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160 changes: 160 additions & 0 deletions
160
...c/main/java/org/optaplanner/examples/common/persistence/AbstractXlsxSolutionImporter.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,160 @@ | ||
| /* | ||
| * Copyright 2015 JBoss Inc | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
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| package org.optaplanner.examples.common.persistence; | ||
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|
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| import java.io.File; | ||
| import java.io.FileInputStream; | ||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
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|
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| 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; | ||
|
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| public abstract class AbstractXlsxSolutionImporter extends AbstractSolutionImporter { | ||
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| private static final String DEFAULT_INPUT_FILE_SUFFIX = "xlsx"; | ||
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| protected AbstractXlsxSolutionImporter(SolutionDao solutionDao) { | ||
| super(solutionDao); | ||
| } | ||
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| protected AbstractXlsxSolutionImporter(boolean withoutDao) { | ||
| super(withoutDao); | ||
| } | ||
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| public String getInputFileSuffix() { | ||
| return DEFAULT_INPUT_FILE_SUFFIX; | ||
| } | ||
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| public abstract XslxInputBuilder createXslxInputBuilder(); | ||
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| 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; | ||
| } | ||
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| public static abstract class XslxInputBuilder extends InputBuilder { | ||
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| protected File inputFile; | ||
| protected XSSFWorkbook workbook; | ||
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| public void setInputFile(File inputFile) { | ||
| this.inputFile = inputFile; | ||
| } | ||
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| public void setWorkbook(XSSFWorkbook document) { | ||
| this.workbook = document; | ||
| } | ||
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| public abstract Solution readSolution() throws IOException; | ||
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| // ************************************************************************ | ||
| // Helper methods | ||
| // ************************************************************************ | ||
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| public String getInputId() { | ||
| return FilenameUtils.getBaseName(inputFile.getPath()); | ||
| } | ||
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| 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; | ||
| } | ||
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| 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 + ")"); | ||
| } | ||
| } | ||
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| 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; | ||
| } | ||
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| protected double readDoubleCell(Cell cell) { | ||
| return cell.getNumericCellValue(); | ||
| } | ||
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| protected String readStringCell(Cell cell) { | ||
| return cell.getStringCellValue(); | ||
| } | ||
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| 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(); | ||
| } | ||
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| 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(); | ||
| } | ||
|
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| } | ||
|
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| } |
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