testrowrecordsaggregate.java

来自「EXCEL read and write」· Java 代码 · 共 117 行

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   this work for additional information regarding copyright ownership.
   The ASF licenses this file to You under the Apache License, Version 2.0
   (the "License"); you may not use this file except in compliance with
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       http://www.apache.org/licenses/LICENSE-2.0

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   distributed under the License is distributed on an "AS IS" BASIS,
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   See the License for the specific language governing permissions and
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package org.apache.poi.hssf.record.aggregates;

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

import junit.framework.AssertionFailedError;
import junit.framework.TestCase;

import org.apache.poi.hssf.HSSFTestDataSamples;
import org.apache.poi.hssf.record.ArrayRecord;
import org.apache.poi.hssf.record.FormulaRecord;
import org.apache.poi.hssf.record.Record;
import org.apache.poi.hssf.record.RowRecord;
import org.apache.poi.hssf.record.SharedFormulaRecord;
import org.apache.poi.hssf.record.SharedValueRecordBase;
import org.apache.poi.hssf.record.TableRecord;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.RecordInspector;
import org.apache.poi.hssf.util.CellRangeAddress8Bit;

/**
 * 
 */
public final class TestRowRecordsAggregate extends TestCase {

	public void testRowGet() {
		RowRecordsAggregate rra = new RowRecordsAggregate();
		RowRecord rr = new RowRecord(4);
		rra.insertRow(rr);
		rra.insertRow(new RowRecord(1));

		RowRecord rr1 = rra.getRow(4);

		assertNotNull(rr1);
		assertEquals("Row number is 1", 4, rr1.getRowNumber());
		assertTrue("Row record retrieved is identical ", rr1 == rr);
	}

	/**
	 * Prior to Aug 2008, POI would re-serialize spreadsheets with {@link ArrayRecord}s or
	 * {@link TableRecord}s with those records out of order.  Similar to 
	 * {@link SharedFormulaRecord}s, these records should appear immediately after the first
	 * {@link FormulaRecord}s that they apply to (and only once).<br/>
	 */
	public void testArraysAndTables() {
		HSSFWorkbook wb = HSSFTestDataSamples.openSampleWorkbook("testArraysAndTables.xls");
		Record[] sheetRecs = RecordInspector.getRecords(wb.getSheetAt(0), 0);
		
		int countArrayFormulas = verifySharedValues(sheetRecs, ArrayRecord.class);
		assertEquals(5, countArrayFormulas);
		int countTableFormulas = verifySharedValues(sheetRecs, TableRecord.class);
		assertEquals(3, countTableFormulas);

		// Note - SharedFormulaRecords are currently not re-serialized by POI (each is extracted
		// into many non-shared formulas), but if they ever were, the same rules would apply. 
		int countSharedFormulas = verifySharedValues(sheetRecs, SharedFormulaRecord.class);
		assertEquals(0, countSharedFormulas);
		

		if (false) { // set true to observe re-serialized file
			File f = new File(System.getProperty("java.io.tmpdir") + "/testArraysAndTables-out.xls");
			try {
				OutputStream os = new FileOutputStream(f);
				wb.write(os);
				os.close();
			} catch (IOException e) {
				throw new RuntimeException(e);
			}
			System.out.println("Output file to " + f.getAbsolutePath());
		}
	}

	private static int verifySharedValues(Record[] recs, Class shfClass) {
		
		int result =0;
		for(int i=0; i<recs.length; i++) {
			Record rec = recs[i];
			if (rec.getClass() == shfClass) {
				result++;
				Record prevRec = recs[i-1];
				if (!(prevRec instanceof FormulaRecord)) {
					throw new AssertionFailedError("Bad record order at index "
							+ i + ": Formula record expected but got (" 
							+ prevRec.getClass().getName() + ")");
				}
				verifySharedFormula((FormulaRecord) prevRec, rec);
			}
		}
		return result;
	}

	private static void verifySharedFormula(FormulaRecord firstFormula, Record rec) {
		CellRangeAddress8Bit range = ((SharedValueRecordBase)rec).getRange();
		assertEquals(range.getFirstRow(), firstFormula.getRow());
		assertEquals(range.getFirstColumn(), firstFormula.getColumn());
	}
}