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(the "License"); you may not use this file except in compliance with
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Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.poi.hssf.usermodel;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.regex.Pattern;
import org.apache.poi.hssf.model.HSSFFormulaParser;
import org.apache.poi.hssf.record.DVRecord;
import org.apache.poi.ss.formula.FormulaRenderer;
import org.apache.poi.ss.formula.FormulaRenderingWorkbook;
import org.apache.poi.ss.formula.FormulaType;
import org.apache.poi.ss.formula.ptg.NumberPtg;
import org.apache.poi.ss.formula.ptg.Ptg;
import org.apache.poi.ss.formula.ptg.StringPtg;
import org.apache.poi.ss.usermodel.DataValidationConstraint;
import org.apache.poi.util.LocaleUtil;
/**
* Data Validation Constraint
*/
public class DVConstraint implements DataValidationConstraint {
/* package */ static final class FormulaPair {
private final Ptg[] _formula1;
private final Ptg[] _formula2;
FormulaPair(Ptg[] formula1, Ptg[] formula2) {
_formula1 = (formula1 == null) ? null : formula1.clone();
_formula2 = (formula2 == null) ? null : formula2.clone();
}
public Ptg[] getFormula1() {
return _formula1;
}
public Ptg[] getFormula2() {
return _formula2;
}
}
private final int _validationType;
private int _operator;
private String[] _explicitListValues;
private String _formula1;
private String _formula2;
private Double _value1;
private Double _value2;
private DVConstraint(int validationType, int comparisonOperator, String formulaA,
String formulaB, Double value1, Double value2, String[] explicitListValues) {
_validationType = validationType;
_operator = comparisonOperator;
_formula1 = formulaA;
_formula2 = formulaB;
_value1 = value1;
_value2 = value2;
_explicitListValues = (explicitListValues == null) ? null : explicitListValues.clone();
}
/**
* Creates a list constraint
*/
private DVConstraint(String listFormula, String[] explicitListValues) {
this(ValidationType.LIST, OperatorType.IGNORED,
listFormula, null, null, null, explicitListValues);
}
/**
* Creates a number based data validation constraint. The text values entered for expr1 and expr2
* can be either standard Excel formulas or formatted number values. If the expression starts
* with '=' it is parsed as a formula, otherwise it is parsed as a formatted number.
*
* @param validationType one of {@link org.apache.poi.ss.usermodel.DataValidationConstraint.ValidationType#ANY},
* {@link org.apache.poi.ss.usermodel.DataValidationConstraint.ValidationType#DECIMAL},
* {@link org.apache.poi.ss.usermodel.DataValidationConstraint.ValidationType#INTEGER},
* {@link org.apache.poi.ss.usermodel.DataValidationConstraint.ValidationType#TEXT_LENGTH}
* @param comparisonOperator any constant from {@link org.apache.poi.ss.usermodel.DataValidationConstraint.OperatorType} enum
* @param expr1 date formula (when first char is '=') or formatted number value
* @param expr2 date formula (when first char is '=') or formatted number value
*/
public static DVConstraint createNumericConstraint(int validationType, int comparisonOperator,
String expr1, String expr2) {
switch (validationType) {
case ValidationType.ANY:
if (expr1 != null || expr2 != null) {
throw new IllegalArgumentException("expr1 and expr2 must be null for validation type 'any'");
}
break;
case ValidationType.DECIMAL:
case ValidationType.INTEGER:
case ValidationType.TEXT_LENGTH:
if (expr1 == null) {
throw new IllegalArgumentException("expr1 must be supplied");
}
OperatorType.validateSecondArg(comparisonOperator, expr2);
break;
default:
throw new IllegalArgumentException("Validation Type ("
+ validationType + ") not supported with this method");
}
// formula1 and value1 are mutually exclusive
String formula1 = getFormulaFromTextExpression(expr1);
Double value1 = formula1 == null ? convertNumber(expr1) : null;
// formula2 and value2 are mutually exclusive
String formula2 = getFormulaFromTextExpression(expr2);
Double value2 = formula2 == null ? convertNumber(expr2) : null;
return new DVConstraint(validationType, comparisonOperator, formula1, formula2, value1, value2, null);
}
public static DVConstraint createFormulaListConstraint(String listFormula) {
return new DVConstraint(listFormula, null);
}
public static DVConstraint createExplicitListConstraint(String[] explicitListValues) {
return new DVConstraint(null, explicitListValues);
}
/**
* Creates a time based data validation constraint. The text values entered for expr1 and expr2
* can be either standard Excel formulas or formatted time values. If the expression starts
* with '=' it is parsed as a formula, otherwise it is parsed as a formatted time. To parse
* formatted times, two formats are supported: "HH:MM" or "HH:MM:SS". This is contrary to
* Excel which uses the default time format from the OS.
*
* @param comparisonOperator constant from {@link org.apache.poi.ss.usermodel.DataValidationConstraint.OperatorType} enum
* @param expr1 date formula (when first char is '=') or formatted time value
* @param expr2 date formula (when first char is '=') or formatted time value
*/
public static DVConstraint createTimeConstraint(int comparisonOperator, String expr1, String expr2) {
if (expr1 == null) {
throw new IllegalArgumentException("expr1 must be supplied");
}
OperatorType.validateSecondArg(comparisonOperator, expr1);
// formula1 and value1 are mutually exclusive
String formula1 = getFormulaFromTextExpression(expr1);
Double value1 = formula1 == null ? convertTime(expr1) : null;
// formula2 and value2 are mutually exclusive
String formula2 = getFormulaFromTextExpression(expr2);
Double value2 = formula2 == null ? convertTime(expr2) : null;
return new DVConstraint(ValidationType.TIME, comparisonOperator, formula1, formula2, value1, value2, null);
}
/**
* Creates a date based data validation constraint. The text values entered for expr1 and expr2
* can be either standard Excel formulas or formatted date values. If the expression starts
* with '=' it is parsed as a formula, otherwise it is parsed as a formatted date (Excel uses
* the same convention). To parse formatted dates, a date format needs to be specified. This
* is contrary to Excel which uses the default short date format from the OS.
*
* @param comparisonOperator constant from {@link org.apache.poi.ss.usermodel.DataValidationConstraint.OperatorType} enum
* @param expr1 date formula (when first char is '=') or formatted date value
* @param expr2 date formula (when first char is '=') or formatted date value
* @param dateFormat ignored if both expr1 and expr2 are formulas. Default value is "YYYY/MM/DD"
* otherwise any other valid argument for SimpleDateFormat can be used
* @see SimpleDateFormat
*/
public static DVConstraint createDateConstraint(int comparisonOperator, String expr1, String expr2, String dateFormat) {
if (expr1 == null) {
throw new IllegalArgumentException("expr1 must be supplied");
}
OperatorType.validateSecondArg(comparisonOperator, expr2);
SimpleDateFormat df = null;
if (dateFormat != null) {
df = new SimpleDateFormat(dateFormat, LocaleUtil.getUserLocale());
df.setTimeZone(LocaleUtil.getUserTimeZone());
}
// formula1 and value1 are mutually exclusive
String formula1 = getFormulaFromTextExpression(expr1);
Double value1 = formula1 == null ? convertDate(expr1, df) : null;
// formula2 and value2 are mutually exclusive
String formula2 = getFormulaFromTextExpression(expr2);
Double value2 = formula2 == null ? convertDate(expr2, df) : null;
return new DVConstraint(ValidationType.DATE, comparisonOperator, formula1, formula2, value1, value2, null);
}
/**
* Distinguishes formula expressions from simple value expressions. This logic is only
* required by a few factory methods in this class that create data validation constraints
* from more or less the same parameters that would have been entered in the Excel UI. The
* data validation dialog box uses the convention that formulas begin with '='. Other methods
* in this class follow the POI convention (formulas and values are distinct), so the '='
* convention is not used there.
*
* @param textExpr a formula or value expression
* @return all text after '=' if textExpr begins with '='. Otherwise null if textExpr does not begin with '='
*/
private static String getFormulaFromTextExpression(String textExpr) {
if (textExpr == null) {
return null;
}
if (textExpr.length() < 1) {
throw new IllegalArgumentException("Empty string is not a valid formula/value expression");
}
if (textExpr.charAt(0) == '=') {
return textExpr.substring(1);
}
return null;
}
/**
* @return null if numberStr is null
*/
private static Double convertNumber(String numberStr) {
if (numberStr == null) {
return null;
}
try {
return Double.valueOf(numberStr);
} catch (NumberFormatException e) {
throw new RuntimeException("The supplied text '" + numberStr
+ "' could not be parsed as a number");
}
}
/**
* @return null if timeStr is null
*/
private static Double convertTime(String timeStr) {
if (timeStr == null) {
return null;
}
return Double.valueOf(HSSFDateUtil.convertTime(timeStr));
}
/**
* @param dateFormat pass null for default YYYYMMDD
* @return null if timeStr is null
*/
private static Double convertDate(String dateStr, SimpleDateFormat dateFormat) {
if (dateStr == null) {
return null;
}
Date dateVal;
if (dateFormat == null) {
dateVal = HSSFDateUtil.parseYYYYMMDDDate(dateStr);
} else {
try {
dateVal = dateFormat.parse(dateStr);
} catch (ParseException e) {
throw new RuntimeException("Failed to parse date '" + dateStr
+ "' using specified format '" + dateFormat + "'", e);
}
}
return Double.valueOf(HSSFDateUtil.getExcelDate(dateVal));
}
public static DVConstraint createCustomFormulaConstraint(String formula) {
if (formula == null) {
throw new IllegalArgumentException("formula must be supplied");
}
return new DVConstraint(ValidationType.FORMULA, OperatorType.IGNORED, formula, null, null, null, null);
}
/* (non-Javadoc)
* @see org.apache.poi.hssf.usermodel.DataValidationConstraint#getValidationType()
*/
public int getValidationType() {
return _validationType;
}
/**
* Convenience method
* @return true if this constraint is a 'list' validation
*/
public boolean isListValidationType() {
return _validationType == ValidationType.LIST;
}
/**
* Convenience method
* @return true if this constraint is a 'list' validation with explicit values
*/
public boolean isExplicitList() {
return _validationType == ValidationType.LIST && _explicitListValues != null;
}
/* (non-Javadoc)
* @see org.apache.poi.hssf.usermodel.DataValidationConstraint#getOperator()
*/
public int getOperator() {
return _operator;
}
/* (non-Javadoc)
* @see org.apache.poi.hssf.usermodel.DataValidationConstraint#setOperator(int)
*/
public void setOperator(int operator) {
_operator = operator;
}
/* (non-Javadoc)
* @see org.apache.poi.hssf.usermodel.DataValidationConstraint#getExplicitListValues()
*/
public String[] getExplicitListValues() {
return _explicitListValues;
}
/* (non-Javadoc)
* @see org.apache.poi.hssf.usermodel.DataValidationConstraint#setExplicitListValues(java.lang.String[])
*/
public void setExplicitListValues(String[] explicitListValues) {
if (_validationType != ValidationType.LIST) {
throw new RuntimeException("Cannot setExplicitListValues on non-list constraint");
}
_formula1 = null;
_explicitListValues = explicitListValues;
}
/* (non-Javadoc)
* @see org.apache.poi.hssf.usermodel.DataValidationConstraint#getFormula1()
*/
public String getFormula1() {
return _formula1;
}
/* (non-Javadoc)
* @see org.apache.poi.hssf.usermodel.DataValidationConstraint#setFormula1(java.lang.String)
*/
public void setFormula1(String formula1) {
_value1 = null;
_explicitListValues = null;
_formula1 = formula1;
}
/* (non-Javadoc)
* @see org.apache.poi.hssf.usermodel.DataValidationConstraint#getFormula2()
*/
public String getFormula2() {
return _formula2;
}
/* (non-Javadoc)
* @see org.apache.poi.hssf.usermodel.DataValidationConstraint#setFormula2(java.lang.String)
*/
public void setFormula2(String formula2) {
_value2 = null;
_formula2 = formula2;
}
/**
* @return the numeric value for expression 1. May be null
*/
public Double getValue1() {
return _value1;
}
/**
* Sets a numeric value for expression 1.
*/
public void setValue1(double value1) {
_formula1 = null;
_value1 = Double.valueOf(value1);
}
/**
* @return the numeric value for expression 2. May be null
*/
public Double getValue2() {
return _value2;
}
/**
* Sets a numeric value for expression 2.
*/
public void setValue2(double value2) {
_formula2 = null;
_value2 = Double.valueOf(value2);
}
/**
* @return both parsed formulas (for expression 1 and 2).
*/
/* package */ FormulaPair createFormulas(HSSFSheet sheet) {
Ptg[] formula1;
Ptg[] formula2;
if (isListValidationType()) {
formula1 = createListFormula(sheet);
formula2 = Ptg.EMPTY_PTG_ARRAY;
} else {
formula1 = convertDoubleFormula(_formula1, _value1, sheet);
formula2 = convertDoubleFormula(_formula2, _value2, sheet);
}
return new FormulaPair(formula1, formula2);
}
@SuppressWarnings("resource")
private Ptg[] createListFormula(HSSFSheet sheet) {
if (_explicitListValues == null) {
HSSFWorkbook wb = sheet.getWorkbook();
// formula is parsed with slightly different RVA rules: (root node type must be 'reference')
return HSSFFormulaParser.parse(_formula1, wb, FormulaType.DATAVALIDATION_LIST, wb.getSheetIndex(sheet));
// To do: Excel places restrictions on the available operations within a list formula.
// Some things like union and intersection are not allowed.
}
// explicit list was provided
StringBuilder sb = new StringBuilder(_explicitListValues.length * 16);
for (int i = 0; i < _explicitListValues.length; i++) {
if (i > 0) {
sb.append('\0'); // list delimiter is the nul char
}
sb.append(_explicitListValues[i]);
}
return new Ptg[] { new StringPtg(sb.toString()), };
}
/**
* @return The parsed token array representing the formula or value specified.
* Empty array if both formula and value are null
*/
@SuppressWarnings("resource")
private static Ptg[] convertDoubleFormula(String formula, Double value, HSSFSheet sheet) {
if (formula == null) {
if (value == null) {
return Ptg.EMPTY_PTG_ARRAY;
}
return new Ptg[] { new NumberPtg(value.doubleValue()), };
}
if (value != null) {
throw new IllegalStateException("Both formula and value cannot be present");
}
HSSFWorkbook wb = sheet.getWorkbook();
return HSSFFormulaParser.parse(formula, wb, FormulaType.CELL, wb.getSheetIndex(sheet));
}
static DVConstraint createDVConstraint(DVRecord dvRecord, FormulaRenderingWorkbook book) {
switch (dvRecord.getDataType()) {
case ValidationType.ANY:
return new DVConstraint(ValidationType.ANY, dvRecord.getConditionOperator(), null, null, null, null, null);
case ValidationType.INTEGER:
case ValidationType.DECIMAL:
case ValidationType.DATE:
case ValidationType.TIME:
case ValidationType.TEXT_LENGTH:
FormulaValuePair pair1 = toFormulaString(dvRecord.getFormula1(), book);
FormulaValuePair pair2 = toFormulaString(dvRecord.getFormula2(), book);
return new DVConstraint(dvRecord.getDataType(), dvRecord.getConditionOperator(), pair1.formula(),
pair2.formula(), pair1.value(), pair2.value(), null);
case ValidationType.LIST:
if (dvRecord.getListExplicitFormula()) {
String values = toFormulaString(dvRecord.getFormula1(), book).string();
if (values.startsWith("\"")) {
values = values.substring(1);
}
if (values.endsWith("\"")) {
values = values.substring(0, values.length() - 1);
}
String[] explicitListValues = values.split(Pattern.quote("\0"));
return createExplicitListConstraint(explicitListValues);
} else {
String listFormula = toFormulaString(dvRecord.getFormula1(), book).string();
return createFormulaListConstraint(listFormula);
}
case ValidationType.FORMULA:
return createCustomFormulaConstraint(toFormulaString(dvRecord.getFormula1(), book).string());
default:
throw new UnsupportedOperationException("validationType="+dvRecord.getDataType());
}
}
private static class FormulaValuePair {
private String _formula;
private String _value;
public String formula() {
return _formula;
}
public Double value() {
if (_value == null) {
return null;
}
return Double.valueOf(_value);
}
public String string() {
if (_formula != null) {
return _formula;
}
if (_value != null) {
return _value;
}
return null;
}
}
private static FormulaValuePair toFormulaString(Ptg[] ptgs, FormulaRenderingWorkbook book) {
FormulaValuePair pair = new FormulaValuePair();
if (ptgs != null && ptgs.length > 0) {
String string = FormulaRenderer.toFormulaString(book, ptgs);
if (ptgs.length == 1 && ptgs[0].getClass() == NumberPtg.class) {
pair._value = string;
} else {
pair._formula = string;
}
}
return pair;
}
}