Coverage report

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org.apache.commons.validator.routines.ByteValidator
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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.routines;
 18  
 
 19  
 import java.text.Format;
 20  
 import java.util.Locale;
 21  
 
 22  
 /**
 23  
  * <p><b>Byte Validation</b> and Conversion routines (<code>java.lang.Byte</code>).</p>
 24  
  *
 25  
  * <p>This validator provides a number of methods for
 26  
  *    validating/converting a <code>String</code> value to
 27  
  *    a <code>Byte</code> using <code>java.text.NumberFormat</code>
 28  
  *    to parse either:</p>
 29  
  *    <ul>
 30  
  *       <li>using the default format for the default <code>Locale</code></li>
 31  
  *       <li>using a specified pattern with the default <code>Locale</code></li>
 32  
  *       <li>using the default format for a specified <code>Locale</code></li>
 33  
  *       <li>using a specified pattern with a specified <code>Locale</code></li>
 34  
  *    </ul>
 35  
  *    
 36  
  * <p>Use one of the <code>isValid()</code> methods to just validate or
 37  
  *    one of the <code>validate()</code> methods to validate and receive a
 38  
  *    <i>converted</i> <code>Byte</code> value.</p>
 39  
  * 
 40  
  * <p>Once a value has been sucessfully converted the following
 41  
  *    methods can be used to perform minimum, maximum and range checks:</p>
 42  
  *    <ul>
 43  
  *       <li><code>minValue()</code> checks whether the value is greater
 44  
  *           than or equal to a specified minimum.</li>
 45  
  *       <li><code>maxValue()</code> checks whether the value is less
 46  
  *           than or equal to a specified maximum.</li>
 47  
  *       <li><code>isInRange()</code> checks whether the value is within
 48  
  *           a specified range of values.</li>
 49  
  *    </ul>
 50  
  * 
 51  
  * <p>So that the same mechanism used for parsing an <i>input</i> value 
 52  
  *    for validation can be used to format <i>output</i>, corresponding
 53  
  *    <code>format()</code> methods are also provided. That is you can 
 54  
  *    format either:</p>
 55  
  *    <ul>
 56  
  *       <li>using the default format for the default <code>Locale</code></li>
 57  
  *       <li>using a specified pattern with the default <code>Locale</code></li>
 58  
  *       <li>using the default format for a specified <code>Locale</code></li>
 59  
  *       <li>using a specified pattern with a specified <code>Locale</code></li>
 60  
  *    </ul>
 61  
  *
 62  
  * @version $Revision: 478334 $ $Date: 2006-11-22 21:31:54 +0000 (Wed, 22 Nov 2006) $
 63  
  * @since Validator 1.3.0
 64  
  */
 65  
 public class ByteValidator extends AbstractNumberValidator {
 66  
 
 67  1
     private static final ByteValidator VALIDATOR = new ByteValidator();
 68  
 
 69  
     /**
 70  
      * Return a singleton instance of this validator.
 71  
      * @return A singleton instance of the ByteValidator.
 72  
      */
 73  
     public static ByteValidator getInstance() {
 74  16
         return VALIDATOR;
 75  
     }
 76  
 
 77  
     /**
 78  
      * Construct a <i>strict</i> instance.
 79  
      */
 80  
     public ByteValidator() {
 81  12
         this(true, STANDARD_FORMAT);
 82  12
     }
 83  
 
 84  
     /**
 85  
      * <p>Construct an instance with the specified strict setting
 86  
      *    and format type.</p>
 87  
      *    
 88  
      * <p>The <code>formatType</code> specified what type of
 89  
      *    <code>NumberFormat</code> is created - valid types
 90  
      *    are:</p>
 91  
      *    <ul>
 92  
      *       <li>AbstractNumberValidator.STANDARD_FORMAT -to create
 93  
      *           <i>standard</i> number formats (the default).</li>
 94  
      *       <li>AbstractNumberValidator.CURRENCY_FORMAT -to create
 95  
      *           <i>currency</i> number formats.</li>
 96  
      *       <li>AbstractNumberValidator.PERCENT_FORMAT -to create
 97  
      *           <i>percent</i> number formats (the default).</li>
 98  
      *    </ul>
 99  
      * 
 100  
      * @param strict <code>true</code> if strict 
 101  
      *        <code>Format</code> parsing should be used.
 102  
      * @param formatType The <code>NumberFormat</code> type to
 103  
      *        create for validation, default is STANDARD_FORMAT.
 104  
      */
 105  
     public ByteValidator(boolean strict, int formatType) {
 106  23
         super(strict, formatType, false);
 107  23
     }
 108  
 
 109  
     /**
 110  
      * <p>Validate/convert a <code>Byte</code> using the default
 111  
      *    <code>Locale</code>. 
 112  
      *
 113  
      * @param value The value validation is being performed on.
 114  
      * @return The parsed <code>Byte</code> if valid or <code>null</code>
 115  
      *  if invalid.
 116  
      */
 117  
     public Byte validate(String value) {
 118  2
         return (Byte)parse(value, (String)null, (Locale)class="keyword">null);
 119  
     }
 120  
 
 121  
     /**
 122  
      * <p>Validate/convert a <code>Byte</code> using the
 123  
      *    specified <i>pattern</i>. 
 124  
      *
 125  
      * @param value The value validation is being performed on.
 126  
      * @param pattern The pattern used to validate the value against.
 127  
      * @return The parsed <code>Byte</code> if valid or <code>null</code> if invalid.
 128  
      */
 129  
     public Byte validate(String value, String pattern) {
 130  8
         return (Byte)parse(value, pattern, (Locale)null);
 131  
     }
 132  
 
 133  
     /**
 134  
      * <p>Validate/convert a <code>Byte</code> using the
 135  
      *    specified <code>Locale</code>. 
 136  
      *
 137  
      * @param value The value validation is being performed on.
 138  
      * @param locale The locale to use for the number format, system default if null.
 139  
      * @return The parsed <code>Byte</code> if valid or <code>null</code> if invalid.
 140  
      */
 141  
     public Byte validate(String value, Locale locale) {
 142  2
         return (Byte)parse(value, (String)null, locale);
 143  
     }
 144  
 
 145  
     /**
 146  
      * <p>Validate/convert a <code>Byte</code> using the
 147  
      *    specified pattern and/ or <code>Locale</code>. 
 148  
      *
 149  
      * @param value The value validation is being performed on.
 150  
      * @param pattern The pattern used to validate the value against, or the
 151  
      *        default for the <code>Locale</code> if <code>null</code>.
 152  
      * @param locale The locale to use for the date format, system default if null.
 153  
      * @return The parsed <code>Byte</code> if valid or <code>null</code> if invalid.
 154  
      */
 155  
     public Byte validate(String value, String pattern, Locale locale) {
 156  2
         return (Byte)parse(value, pattern, locale);
 157  
     }
 158  
 
 159  
     /**
 160  
      * Check if the value is within a specified range.
 161  
      * 
 162  
      * @param value The <code>Number</code> value to check.
 163  
      * @param min The minimum value of the range.
 164  
      * @param max The maximum value of the range.
 165  
      * @return <code>true</code> if the value is within the
 166  
      *         specified range.
 167  
      */
 168  
     public boolean isInRange(byte value, byte min, byte max) {
 169  5
         return (value >= min && value <= max);
 170  
     }
 171  
 
 172  
     /**
 173  
      * Check if the value is within a specified range.
 174  
      * 
 175  
      * @param value The <code>Number</code> value to check.
 176  
      * @param min The minimum value of the range.
 177  
      * @param max The maximum value of the range.
 178  
      * @return <code>true</code> if the value is within the
 179  
      *         specified range.
 180  
      */
 181  
     public boolean isInRange(Byte value, byte min, byte max) {
 182  5
         return isInRange(value.byteValue(), min, max);
 183  
     }
 184  
 
 185  
     /**
 186  
      * Check if the value is greater than or equal to a minimum.
 187  
      * 
 188  
      * @param value The value validation is being performed on.
 189  
      * @param min The minimum value.
 190  
      * @return <code>true</code> if the value is greater than
 191  
      *         or equal to the minimum.
 192  
      */
 193  
     public boolean minValue(byte value, byte min) {
 194  3
         return (value >= min);
 195  
     }
 196  
 
 197  
     /**
 198  
      * Check if the value is greater than or equal to a minimum.
 199  
      * 
 200  
      * @param value The value validation is being performed on.
 201  
      * @param min The minimum value.
 202  
      * @return <code>true</code> if the value is greater than
 203  
      *         or equal to the minimum.
 204  
      */
 205  
     public boolean minValue(Byte value, byte min) {
 206  3
         return minValue(value.byteValue(), min);
 207  
     }
 208  
 
 209  
     /**
 210  
      * Check if the value is less than or equal to a maximum.
 211  
      * 
 212  
      * @param value The value validation is being performed on.
 213  
      * @param max The maximum value.
 214  
      * @return <code>true</code> if the value is less than
 215  
      *         or equal to the maximum.
 216  
      */
 217  
     public boolean maxValue(byte value, byte max) {
 218  3
         return (value <= max);
 219  
     }
 220  
 
 221  
     /**
 222  
      * Check if the value is less than or equal to a maximum.
 223  
      * 
 224  
      * @param value The value validation is being performed on.
 225  
      * @param max The maximum value.
 226  
      * @return <code>true</code> if the value is less than
 227  
      *         or equal to the maximum.
 228  
      */
 229  
     public boolean maxValue(Byte value, byte max) {
 230  3
         return maxValue(value.byteValue(), max);
 231  
     }
 232  
 
 233  
     /**
 234  
      * <p>Perform further validation and convert the <code>Number</code> to
 235  
      * a <code>Byte</code>.</p>
 236  
      * 
 237  
      * @param value The parsed <code>Number</code> object created.
 238  
      * @param formatter The Format used to parse the value with.
 239  
      * @return The parsed <code>Number</code> converted to a 
 240  
      *   <code>Byte</code> if valid or <code>null</code> if invalid.
 241  
      */
 242  
     protected Object processParsedValue(Object value, Format formatter) {
 243  
 
 244  53
         long class="keyword">longValue = ((Number)value).class="keyword">longValue();
 245  
 
 246  53
         if (longValue < Byte.MIN_VALUE || 
 247  
             longValue > Byte.MAX_VALUE) {
 248  2
             return null;
 249  
         } else {
 250  51
             return new Byte((byte)longValue);
 251  
         }
 252  
     }
 253  
 
 254  
 }

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