86 lines
2.8 KiB
Java
86 lines
2.8 KiB
Java
/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.stress;
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import static org.junit.Assert.assertNotNull;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
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import org.apache.poi.ss.usermodel.Cell;
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import org.apache.poi.ss.usermodel.Row;
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import org.apache.poi.ss.usermodel.Sheet;
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import org.apache.poi.ss.usermodel.Workbook;
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import org.apache.poi.ss.usermodel.WorkbookFactory;
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public abstract class SpreadsheetHandler implements FileHandler {
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public void handleWorkbook(Workbook wb, String extension) throws IOException {
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// try to access some of the content
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readContent(wb);
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// write out the file
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ByteArrayOutputStream out = writeToArray(wb);
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// access some more content (we had cases where writing corrupts the data in memory)
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readContent(wb);
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// write once more
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out = writeToArray(wb);
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// read in the writen file
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Workbook read;
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try {
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read = WorkbookFactory.create(new ByteArrayInputStream(out.toByteArray()));
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} catch (InvalidFormatException e) {
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throw new IllegalStateException(e);
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}
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assertNotNull(read);
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readContent(read);
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}
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private ByteArrayOutputStream writeToArray(Workbook wb)
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throws FileNotFoundException, IOException {
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ByteArrayOutputStream stream = new ByteArrayOutputStream();
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try {
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wb.write(stream);
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} finally {
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stream.close();
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}
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return stream;
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}
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private void readContent(Workbook wb) {
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for(int i = 0;i < wb.getNumberOfSheets();i++) {
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Sheet sheet = wb.getSheetAt(i);
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assertNotNull(wb.getSheet(sheet.getSheetName()));
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sheet.groupColumn((short) 4, (short) 5);
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sheet.setColumnGroupCollapsed(4, true);
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sheet.setColumnGroupCollapsed(4, false);
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for(Row row : sheet) {
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for(Cell cell : row) {
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cell.toString();
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}
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}
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}
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}
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} |