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Bug 61472: Convert date/time strings to numbers when evaluating formulas 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1855662 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Yegor Kozlov 2019-03-16 15:41:46 +00:00
parent ee83ce5fcd
commit 6ef332b48e
7 changed files with 142 additions and 6 deletions
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16
src/java/org/apache/poi/ss/formula/eval/OperandResolver.java
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@ -18,8 +18,10 @@
package org.apache.poi.ss.formula.eval;
import org.apache.poi.ss.formula.EvaluationCell;
import org.apache.poi.ss.usermodel.DateUtil;
import org.apache.poi.ss.util.CellRangeAddress;
import java.time.DateTimeException;
import java.util.regex.Pattern;
/**
@ -258,7 +260,9 @@ public final class OperandResolver {
return ((NumericValueEval)ev).getNumberValue();
}
if (ev instanceof StringEval) {
Double dd = parseDouble(((StringEval) ev).getStringValue());
String sval = ((StringEval) ev).getStringValue();
Double dd = parseDouble(sval);
if(dd == null) dd = parseDateTime(sval);
if (dd == null) {
throw EvaluationException.invalidValue();
}
@ -300,6 +304,16 @@ public final class OperandResolver {
}
public static Double parseDateTime(String pText) {
try {
return DateUtil.parseDateTime(pText);
} catch (DateTimeException e) {
return null;
}
}
/**
* @param ve must be a <tt>NumberEval</tt>, <tt>StringEval</tt>, <tt>BoolEval</tt>, or <tt>BlankEval</tt>
* @return the converted string value. never <code>null</code>

16
src/java/org/apache/poi/ss/formula/functions/Value.java
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@ -22,6 +22,9 @@ import org.apache.poi.ss.formula.eval.EvaluationException;
import org.apache.poi.ss.formula.eval.NumberEval;
import org.apache.poi.ss.formula.eval.OperandResolver;
import org.apache.poi.ss.formula.eval.ValueEval;
import org.apache.poi.ss.usermodel.DateUtil;
import java.time.DateTimeException;
/**
* Implementation for Excel VALUE() function.<p>
@ -48,6 +51,7 @@ public final class Value extends Fixed1ArgFunction {
}
String strText = OperandResolver.coerceValueToString(veText);
Double result = convertTextToNumber(strText);
if(result == null) result = parseDateTime(strText);
if (result == null) {
return ErrorEval.VALUE_INVALID;
}
@ -59,7 +63,7 @@ public final class Value extends Fixed1ArgFunction {
*
* @return <code>null</code> if there is any problem converting the text
*/
private static Double convertTextToNumber(String strText) {
public static Double convertTextToNumber(String strText) {
boolean foundCurrency = false;
boolean foundUnaryPlus = false;
boolean foundUnaryMinus = false;
@ -189,4 +193,14 @@ public final class Value extends Fixed1ArgFunction {
double result = foundUnaryMinus ? -d : d;
return foundPercentage ? result/100. : result;
}
public static Double parseDateTime(String pText) {
try {
return DateUtil.parseDateTime(pText);
} catch (DateTimeException e) {
return null;
}
}
}

32
src/java/org/apache/poi/ss/usermodel/DateUtil.java
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@ -18,6 +18,14 @@
package org.apache.poi.ss.usermodel;
import java.time.LocalDate;
import java.time.LocalTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeFormatterBuilder;
import java.time.temporal.ChronoField;
import java.time.temporal.TemporalAccessor;
import java.time.temporal.TemporalQueries;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;
@ -58,6 +66,14 @@ public class DateUtil {
// for format which start with "[DBNum1]" or "[DBNum2]" or "[DBNum3]" could be a Chinese date
private static final Pattern date_ptrn5 = Pattern.compile("^\\[DBNum(1|2|3)\\]");
private static final DateTimeFormatter dateTimeFormats = new DateTimeFormatterBuilder()
.appendPattern("[dd MMM[ yyyy]][[ ]h:m[:s] a][[ ]H:m[:s]]")
.appendPattern("[[yyyy ]dd-MMM[-yyyy]][[ ]h:m[:s] a][[ ]H:m[:s]]")
.appendPattern("[M/dd[/yyyy]][[ ]h:m[:s] a][[ ]H:m[:s]]")
.appendPattern("[[yyyy/]M/dd][[ ]h:m[:s] a][[ ]H:m[:s]]")
.parseDefaulting(ChronoField.YEAR_OF_ERA, Calendar.getInstance().get(Calendar.YEAR))
.toFormatter();
/**
* Given a Date, converts it into a double representing its internal Excel representation,
* which is the number of days since 1/1/1900. Fractional days represent hours, minutes, and seconds.
@ -724,4 +740,20 @@ public class DateUtil {
}
return result;
}
public static Double parseDateTime(String str){
TemporalAccessor tmp = dateTimeFormats.parse(str.replaceAll("\\s+", " "));
LocalTime time = tmp.query(TemporalQueries.localTime());
LocalDate date = tmp.query(TemporalQueries.localDate());
if(time == null && date == null) return null;
double tm = 0;
if(date != null) {
Date d = Date.from(date.atStartOfDay().atZone(ZoneId.systemDefault()).toInstant());
tm = DateUtil.getExcelDate(d);
}
if(time != null) tm += 1.0*time.toSecondOfDay()/SECONDS_PER_DAY;
return tm;
}
}

28
src/testcases/org/apache/poi/ss/formula/eval/TestOperandResolver.java
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@ -20,6 +20,9 @@ package org.apache.poi.ss.formula.eval;
import junit.framework.AssertionFailedError;
import junit.framework.TestCase;
import java.util.LinkedHashMap;
import java.util.Map;
/**
* Tests for <tt>OperandResolver</tt>
*
@ -74,4 +77,29 @@ public final class TestOperandResolver extends TestCase {
assertNull(OperandResolver.parseDouble(value));
}
}
public void testCoerceDateStringToNumber() throws EvaluationException {
Map<String, Double> values = new LinkedHashMap<>();
values.put("2019/1/18", 43483.);
values.put("01/18/2019", 43483.);
values.put("18 Jan 2019", 43483.);
values.put("18-Jan-2019", 43483.);
for (String str : values.keySet()) {
assertEquals(OperandResolver.coerceValueToDouble(new StringEval(str)), values.get(str), 0.00001);
}
}
public void testCoerceTimeStringToNumber() throws EvaluationException {
Map<String, Double> values = new LinkedHashMap<>();
values.put("00:00", 0.0);
values.put("12:00", 0.5);
values.put("15:43:09", 0.654965278);
values.put("15:43", 0.654861111);
values.put("3:43 PM", 0.654861111);
for (String str : values.keySet()) {
assertEquals(OperandResolver.coerceValueToDouble(new StringEval(str)), values.get(str), 0.00001);
}
}
}

23
src/testcases/org/apache/poi/ss/formula/functions/BaseTestFunctionsFromSpreadsheet.java
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@ -78,6 +78,8 @@ public abstract class BaseTestFunctionsFromSpreadsheet {
public int formulasRowIdx;
@Parameter(value = 4)
public HSSFFormulaEvaluator evaluator;
@Parameter(value = 5)
public int precisionColumnIndex;
@ -101,6 +103,14 @@ public abstract class BaseTestFunctionsFromSpreadsheet {
private static void processFunctionGroup(List<Object[]> data, HSSFSheet sheet, final int startRowIndex, String filename) {
HSSFFormulaEvaluator evaluator = new HSSFFormulaEvaluator(sheet.getWorkbook());
int precisionColumnIndex = -1;
HSSFRow precisionRow = sheet.getWorkbook().getSheetAt(0).getRow(11);
HSSFCell precisionCell = precisionRow == null ? null : precisionRow.getCell(0);
if(precisionCell != null && precisionCell.getCellType() == CellType.NUMERIC){
precisionColumnIndex = (int)precisionCell.getNumericCellValue();
}
String currentGroupComment = "";
final int maxRows = sheet.getLastRowNum()+1;
for(int rowIndex=startRowIndex; rowIndex<maxRows; rowIndex++) {
@ -131,7 +141,7 @@ public abstract class BaseTestFunctionsFromSpreadsheet {
testName = evalCell.getCellFormula();
}
data.add(new Object[]{testName, filename, sheet, rowIndex, evaluator});
data.add(new Object[]{testName, filename, sheet, rowIndex, evaluator, precisionColumnIndex});
}
fail("Missing end marker '" + SS.TEST_CASES_END_MARKER + "' on sheet '" + sheet.getSheetName() + "'");
}
@ -141,6 +151,7 @@ public abstract class BaseTestFunctionsFromSpreadsheet {
HSSFRow r = sheet.getRow(formulasRowIdx);
HSSFCell evalCell = r.getCell(SS.COLUMN_INDEX_EVALUATION);
HSSFCell expectedCell = r.getCell(SS.COLUMN_INDEX_EXPECTED_RESULT);
HSSFCell precisionCell = r.getCell(precisionColumnIndex);
CellReference cr = new CellReference(sheet.getSheetName(), formulasRowIdx, evalCell.getColumnIndex(), false, false);
String msg = String.format(Locale.ROOT, "In %s %s {=%s} '%s'"
@ -175,7 +186,9 @@ public abstract class BaseTestFunctionsFromSpreadsheet {
case FORMULA: // will never be used, since we will call method after formula evaluation
fail("Cannot expect formula as result of formula evaluation: " + msg);
case NUMERIC:
assertEquals(expectedCell.getNumericCellValue(), actualValue.getNumberValue(), 0.0);
double precision = precisionCell != null && precisionCell.getCellType() == CellType.NUMERIC
? precisionCell.getNumericCellValue() : 0.0;
assertEquals(expectedCell.getNumericCellValue(), actualValue.getNumberValue(), precision);
break;
case STRING:
assertEquals(msg, expectedCell.getRichStringCellValue().getString(), actualValue.getStringValue());
@ -197,6 +210,12 @@ public abstract class BaseTestFunctionsFromSpreadsheet {
HSSFSheet sheet = workbook.getSheetAt(0);
String specifiedClassName = sheet.getRow(2).getCell(0).getRichStringCellValue().getString();
assertEquals("Test class name in spreadsheet comment", clazz.getName(), specifiedClassName);
HSSFRow precisionRow = sheet.getRow(11);
HSSFCell precisionCell = precisionRow == null ? null : precisionRow.getCell(0);
if(precisionCell != null && precisionCell.getCellType() == CellType.NUMERIC){
}
}
/**

29
src/testcases/org/apache/poi/ss/formula/functions/TestDateTimeToNumberFromSpreadsheet.java Executable file
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@ -0,0 +1,29 @@
/* ====================================================================
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
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
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.
==================================================================== */
package org.apache.poi.ss.formula.functions;
import org.junit.runners.Parameterized.Parameters;
import java.util.Collection;
public class TestDateTimeToNumberFromSpreadsheet extends BaseTestFunctionsFromSpreadsheet {
@Parameters(name="{0}")
public static Collection<Object[]> data() throws Exception {
return data(TestDateTimeToNumberFromSpreadsheet.class, "DateTimeToNumberTestCases.xls");
}
}

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test-data/spreadsheet/DateTimeToNumberTestCases.xls Executable file
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