testformulaparsersp.java

来自「介绍java核心技术的pio编程方法以及基本概念」· Java 代码 · 共 84 行

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package org.apache.poi.hssf.model;

import junit.framework.TestCase;

import org.apache.poi.hssf.record.formula.FuncVarPtg;
import org.apache.poi.hssf.record.formula.NamePtg;
import org.apache.poi.hssf.record.formula.Ptg;
import org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator;
import org.apache.poi.hssf.usermodel.HSSFName;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;

/**
 * Test the low level formula parser functionality,
 *  but using parts which need to use the
 *  HSSFFormulaEvaluator, which is in scratchpad 
 */
public class TestFormulaParserSP extends TestCase {

    public TestFormulaParserSP(String name) {
        super(name);
    }
	
	public void testWithNamedRange() throws Exception {
		HSSFWorkbook workbook = new HSSFWorkbook();
		FormulaParser fp;
		Ptg[] ptgs;

		HSSFSheet s = workbook.createSheet("Foo");
		s.createRow(0).createCell((short)0).setCellValue(1.1);
		s.createRow(1).createCell((short)0).setCellValue(2.3);
		s.createRow(2).createCell((short)2).setCellValue(3.1);

		HSSFName name = workbook.createName();
		name.setNameName("testName");
		name.setReference("A1:A2");

		fp = HSSFFormulaEvaluator.getUnderlyingParser(workbook, "SUM(testName)");
		fp.parse();
		ptgs = fp.getRPNPtg();
		assertTrue("two tokens expected, got "+ptgs.length,ptgs.length == 2);
		assertEquals(NamePtg.class, ptgs[0].getClass());
		assertEquals(FuncVarPtg.class, ptgs[1].getClass());

		// Now make it a single cell
		name.setReference("C3");

		fp = HSSFFormulaEvaluator.getUnderlyingParser(workbook, "SUM(testName)");
		fp.parse();
		ptgs = fp.getRPNPtg();
		assertTrue("two tokens expected, got "+ptgs.length,ptgs.length == 2);
		assertEquals(NamePtg.class, ptgs[0].getClass());
		assertEquals(FuncVarPtg.class, ptgs[1].getClass());
		
		// And make it non-contiguous
		name.setReference("A1:A2,C3");
		fp = HSSFFormulaEvaluator.getUnderlyingParser(workbook, "SUM(testName)");
		fp.parse();
		ptgs = fp.getRPNPtg();
		assertTrue("two tokens expected, got "+ptgs.length,ptgs.length == 2);
		assertEquals(NamePtg.class, ptgs[0].getClass());
		assertEquals(FuncVarPtg.class, ptgs[1].getClass());
	}

}