Coverage report

  %line %branch
org.apache.commons.validator.DateValidator
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 1   
 /*
 2   
  * Licensed to the Apache Software Foundation (ASF) under one or more
 3   
  * contributor license agreements.  See the NOTICE file distributed with
 4   
  * this work for additional information regarding copyright ownership.
 5   
  * The ASF licenses this file to You under the Apache License, Version 2.0
 6   
  * (the "License"); you may not use this file except in compliance with
 7   
  * the License.  You may obtain a copy of the License at
 8   
  *
 9   
  *      http://www.apache.org/licenses/LICENSE-2.0
 10   
  *
 11   
  * Unless required by applicable law or agreed to in writing, software
 12   
  * distributed under the License is distributed on an "AS IS" BASIS,
 13   
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 14   
  * See the License for the specific language governing permissions and
 15   
  * limitations under the License.
 16   
  */
 17   
 package org.apache.commons.validator;
 18   
 
 19   
 import java.text.DateFormat;
 20   
 import java.text.ParseException;
 21   
 import java.text.SimpleDateFormat;
 22   
 import java.util.Locale;
 23   
 
 24   
 /**
 25   
  * <p>Perform date validations.</p>
 26   
  * <p>
 27   
  * This class is a Singleton; you can retrieve the instance via the
 28   
  * getInstance() method.
 29   
  * </p>
 30   
  *
 31   
  * @version $Revision: 478334 $ $Date: 2006-11-22 21:31:54 +0000 (Wed, 22 Nov 2006) $
 32   
  * @since Validator 1.1
 33   
  */
 34   
 public class DateValidator {
 35   
 
 36   
     /**
 37   
      * Singleton instance of this class.
 38   
      */
 39  0 
     private static final DateValidator DATE_VALIDATOR = new DateValidator();
 40   
 
 41   
     /**
 42   
      * Returns the Singleton instance of this validator.
 43   
      * @return A singleton instance of the DateValidator.
 44   
      */
 45   
     public static DateValidator getInstance() {
 46  0 
         return DATE_VALIDATOR;
 47   
     }
 48   
 
 49   
     /**
 50   
      * Protected constructor for subclasses to use.
 51   
      */
 52   
     protected DateValidator() {
 53  0 
         super();
 54  0 
     }
 55   
 
 56   
     /**
 57   
      * <p>Checks if the field is a valid date.  The pattern is used with
 58   
      * <code>java.text.SimpleDateFormat</code>.  If strict is true, then the
 59   
      * length will be checked so '2/12/1999' will not pass validation with
 60   
      * the format 'MM/dd/yyyy' because the month isn't two digits.
 61   
      * The setLenient method is set to <code>false</code> for all.</p>
 62   
      *
 63   
      * @param value The value validation is being performed on.
 64   
      * @param datePattern The pattern passed to <code>SimpleDateFormat</code>.
 65   
      * @param strict Whether or not to have an exact match of the datePattern.
 66   
      * @return true if the date is valid.
 67   
      */
 68   
     public boolean isValid(String value, String datePattern, class="keyword">boolean strict) {
 69   
 
 70  0 
         if (value == null
 71   
                 || datePattern == null
 72   
                 || datePattern.length() <= 0) {
 73   
 
 74  0 
             return false;
 75   
         }
 76   
 
 77  0 
         SimpleDateFormat formatter = new SimpleDateFormat(datePattern);
 78  0 
         formatter.setLenient(false);
 79   
 
 80   
         try {
 81  0 
             formatter.parse(value);
 82  0 
         } catch(ParseException e) {
 83  0 
             return false;
 84   
         }
 85   
 
 86  0 
         if (strict && (datePattern.length() != value.length())) {
 87  0 
             return false;
 88   
         }
 89   
 
 90  0 
         return true;
 91   
     }
 92   
 
 93   
     /**
 94   
      * <p>Checks if the field is a valid date.  The <code>Locale</code> is
 95   
      * used with <code>java.text.DateFormat</code>.  The setLenient method
 96   
      * is set to <code>false</code> for all.</p>
 97   
      *
 98   
      * @param value The value validation is being performed on.
 99   
      * @param locale The locale to use for the date format, defaults to the default
 100   
      * system default if null.
 101   
      * @return true if the date is valid.
 102   
      */
 103   
     public boolean isValid(String value, Locale locale) {
 104   
 
 105  0 
         if (value == null) {
 106  0 
             return false;
 107   
         }
 108   
 
 109  0 
         DateFormat formatter = null;
 110  0 
         if (locale != null) {
 111  0 
             formatter = DateFormat.getDateInstance(DateFormat.SHORT, locale);
 112   
         } else {
 113  0 
             formatter =
 114   
                     DateFormat.getDateInstance(
 115   
                             DateFormat.SHORT,
 116   
                             Locale.getDefault());
 117   
         }
 118   
 
 119  0 
         formatter.setLenient(false);
 120   
 
 121   
         try {
 122  0 
             formatter.parse(value);
 123  0 
         } catch(ParseException e) {
 124  0 
             return false;
 125   
         }
 126   
 
 127  0 
         return true;
 128   
     }
 129   
 
 130   
 }

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