testbug42464.java

介绍java核心技术的pio编程方法以及基本概念

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   this work for additional information regarding copyright ownership.
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   (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.usermodel;

import java.io.File;
import java.io.FileInputStream;
import java.util.Iterator;
import java.util.List;

import org.apache.poi.hssf.record.FormulaRecord;
import org.apache.poi.hssf.record.aggregates.FormulaRecordAggregate;
import org.apache.poi.hssf.record.formula.ExpPtg;
import org.apache.poi.hssf.util.CellReference;

import junit.framework.TestCase;

public class TestBug42464 extends TestCase {
	String dirname;

	protected void setUp() throws Exception {
		super.setUp();
		dirname = System.getProperty("HSSF.testdata.path");
	}

	public void testOKFile() throws Exception {
		HSSFWorkbook wb = new HSSFWorkbook(
				new FileInputStream(new File(dirname,"42464-ExpPtg-ok.xls"))
		);
		process(wb);
	}
	public void testExpSharedBadFile() throws Exception {
		HSSFWorkbook wb = new HSSFWorkbook(
				new FileInputStream(new File(dirname,"42464-ExpPtg-bad.xls"))
		);
		process(wb);
	}
	
	protected void process(HSSFWorkbook wb) {
		for(int i=0; i<wb.getNumberOfSheets(); i++) {
			HSSFSheet s = wb.getSheetAt(i);
			HSSFFormulaEvaluator eval =
				new HSSFFormulaEvaluator(s, wb);
			
			Iterator it = s.rowIterator();
			while(it.hasNext()) {
				HSSFRow r = (HSSFRow)it.next();
				eval.setCurrentRow(r);
				process(r, eval);
			}
		}
	}
	
	protected void process(HSSFRow row, HSSFFormulaEvaluator eval) {
		Iterator it = row.cellIterator();
		while(it.hasNext()) {
			HSSFCell cell = (HSSFCell)it.next();
			if(cell.getCellType() == HSSFCell.CELL_TYPE_FORMULA) {
				FormulaRecordAggregate record = (FormulaRecordAggregate)
					cell.getCellValueRecord();
				FormulaRecord r = record.getFormulaRecord();
				List ptgs = r.getParsedExpression();
				
				String cellRef = (new CellReference(row.getRowNum(), cell.getCellNum())).toString();
				if(cellRef.equals("BP24")) {
					System.out.print(cellRef);
					System.out.println(" - has " + r.getNumberOfExpressionTokens() + " ptgs over " + r.getExpressionLength()  + " tokens:");
					for(int i=0; i<ptgs.size(); i++) {
						String c = ptgs.get(i).getClass().toString();
						System.out.println("\t" + c.substring(c.lastIndexOf('.')+1) );
					}
					System.out.println("-> " + cell.getCellFormula());
				}
				
				eval.evaluate(cell);
				
			}
		}
	}
}