Coverage report

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org.apache.commons.validator.DateValidator
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 1   
 /*
 2   
  * $Id: DateValidator.java 366933 2006-01-07 22:51:01Z niallp $
 3   
  * $Rev: 366933 $
 4   
  * $Date: 2006-01-07 22:51:01 +0000 (Sat, 07 Jan 2006) $
 5   
  *
 6   
  * ====================================================================
 7   
  * Copyright 2001-2006 The Apache Software Foundation
 8   
  *
 9   
  * Licensed under the Apache License, Version 2.0 (the "License");
 10   
  * you may not use this file except in compliance with the License.
 11   
  * You may obtain a copy of the License at
 12   
  *
 13   
  *     http://www.apache.org/licenses/LICENSE-2.0
 14   
  *
 15   
  * Unless required by applicable law or agreed to in writing, software
 16   
  * distributed under the License is distributed on an "AS IS" BASIS,
 17   
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 18   
  * See the License for the specific language governing permissions and
 19   
  * limitations under the License.
 20   
  */
 21   
 
 22   
 package org.apache.commons.validator;
 23   
 
 24   
 import java.text.DateFormat;
 25   
 import java.text.ParseException;
 26   
 import java.text.SimpleDateFormat;
 27   
 import java.util.Locale;
 28   
 
 29   
 /**
 30   
  * <p>Perform date validations.</p>
 31   
  * <p>
 32   
  * This class is a Singleton; you can retrieve the instance via the
 33   
  * getInstance() method.
 34   
  * </p>
 35   
  *
 36   
  * @since Validator 1.1
 37   
  */
 38   
 public class DateValidator {
 39   
 
 40   
     /**
 41   
      * Singleton instance of this class.
 42   
      */
 43  0 
     private static final DateValidator DATE_VALIDATOR = new DateValidator();
 44   
 
 45   
     /**
 46   
      * Returns the Singleton instance of this validator.
 47   
      * @return A singleton instance of the DateValidator.
 48   
      */
 49   
     public static DateValidator getInstance() {
 50  0 
         return DATE_VALIDATOR;
 51   
     }
 52   
 
 53   
     /**
 54   
      * Protected constructor for subclasses to use.
 55   
      */
 56   
     protected DateValidator() {
 57  0 
         super();
 58  0 
     }
 59   
 
 60   
     /**
 61   
      * <p>Checks if the field is a valid date.  The pattern is used with
 62   
      * <code>java.text.SimpleDateFormat</code>.  If strict is true, then the
 63   
      * length will be checked so '2/12/1999' will not pass validation with
 64   
      * the format 'MM/dd/yyyy' because the month isn't two digits.
 65   
      * The setLenient method is set to <code>false</code> for all.</p>
 66   
      *
 67   
      * @param value The value validation is being performed on.
 68   
      * @param datePattern The pattern passed to <code>SimpleDateFormat</code>.
 69   
      * @param strict Whether or not to have an exact match of the datePattern.
 70   
      * @return true if the date is valid.
 71   
      */
 72   
     public boolean isValid(String value, String datePattern, class="keyword">boolean strict) {
 73   
 
 74  0 
         if (value == null
 75   
                 || datePattern == null
 76   
                 || datePattern.length() <= 0) {
 77   
 
 78  0 
             return false;
 79   
         }
 80   
 
 81  0 
         SimpleDateFormat formatter = new SimpleDateFormat(datePattern);
 82  0 
         formatter.setLenient(false);
 83   
 
 84   
         try {
 85  0 
             formatter.parse(value);
 86  0 
         } catch(ParseException e) {
 87  0 
             return false;
 88   
         }
 89   
 
 90  0 
         if (strict && (datePattern.length() != value.length())) {
 91  0 
             return false;
 92   
         }
 93   
 
 94  0 
         return true;
 95   
     }
 96   
 
 97   
     /**
 98   
      * <p>Checks if the field is a valid date.  The <code>Locale</code> is
 99   
      * used with <code>java.text.DateFormat</code>.  The setLenient method
 100   
      * is set to <code>false</code> for all.</p>
 101   
      *
 102   
      * @param value The value validation is being performed on.
 103   
      * @param locale The locale to use for the date format, defaults to the default
 104   
      * system default if null.
 105   
      * @return true if the date is valid.
 106   
      */
 107   
     public boolean isValid(String value, Locale locale) {
 108   
 
 109  0 
         if (value == null) {
 110  0 
             return false;
 111   
         }
 112   
 
 113  0 
         DateFormat formatter = null;
 114  0 
         if (locale != null) {
 115  0 
             formatter = DateFormat.getDateInstance(DateFormat.SHORT, locale);
 116   
         } else {
 117  0 
             formatter =
 118   
                     DateFormat.getDateInstance(
 119   
                             DateFormat.SHORT,
 120   
                             Locale.getDefault());
 121   
         }
 122   
 
 123  0 
         formatter.setLenient(false);
 124   
 
 125   
         try {
 126  0 
             formatter.parse(value);
 127  0 
         } catch(ParseException e) {
 128  0 
             return false;
 129   
         }
 130   
 
 131  0 
         return true;
 132   
     }
 133   
 
 134   
 }

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