Components/Validator/Castle.Components.Validator/Attributes/ValidateLengthAttribute.cs

   1 // Copyright 2004-2007 Castle Project - http://www.castleproject.org/
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 // You may obtain a copy of the License at
   6 //
   7 //     http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 // See the License for the specific language governing permissions and
  13 // limitations under the License.
  14
  15 namespace Castle.Components.Validator
  16 {
  17         using System;
  18
  19         /// <summary>
  20         /// Validate that this property has the required length (either exact or in a range)
  21         /// </summary>
  22         [Serializable, CLSCompliant(false)]
  23         public class ValidateLengthAttribute : AbstractValidationAttribute
  24         {
  25                 private readonly IValidator validator;
  26
  27                 /// <summary>
  28                 /// Initializes a new exact length validator.
  29                 /// </summary>
  30                 /// <param name="exactLength">The exact length required.</param>
  31                 public ValidateLengthAttribute(int exactLength)
  32                 {
  33                         validator = new LengthValidator(exactLength);
  34                 }
  35
  36                 /// <summary>
  37                 /// Initializes a new exact length validator.
  38                 /// </summary>
  39                 /// <param name="exactLength">The exact length required.</param>
  40                 /// <param name="errorMessage">The error message to be displayed if the validation fails.</param>
  41                 public ValidateLengthAttribute(int exactLength, String errorMessage) : base(errorMessage)
  42                 {
  43                         validator = new LengthValidator(exactLength);
  44                 }
  45
  46                 /// <summary>
  47                 /// Initializes a new range based length validator.
  48                 /// </summary>
  49                 /// <param name="minLength">The minimum length, or <c>int.MinValue</c> if this should not be tested.</param>
  50                 /// <param name="maxLength">The maximum length, or <c>int.MaxValue</c> if this should not be tested.</param>
  51                 public ValidateLengthAttribute(int minLength, int maxLength)
  52                 {
  53                         validator = new LengthValidator(minLength, maxLength);
  54                 }
  55
  56                 /// <summary>
  57                 /// Initializes a new range based length validator.
  58                 /// </summary>
  59                 /// <param name="minLength">The minimum length, or <c>int.MinValue</c> if this should not be tested.</param>
  60                 /// <param name="maxLength">The maximum length, or <c>int.MaxValue</c> if this should not be tested.</param>
  61                 /// <param name="errorMessage">The error message to be displayed if the validation fails.</param>
  62                 public ValidateLengthAttribute(int minLength, int maxLength, String errorMessage) : base(errorMessage)
  63                 {
  64                         validator = new LengthValidator(minLength, maxLength);
  65                 }
  66
  67                 /// <summary>
  68                 /// Constructs and configures an <see cref="IValidator"/>
  69                 /// instance based on the properties set on the attribute instance.
  70                 /// </summary>
  71                 /// <returns></returns>
  72                 public override IValidator Build()
  73                 {
  74                         ConfigureValidatorMessage(validator);
  75
  76                         return validator;
  77                 }
  78         }
  79 }