Components/Validator/Castle.Components.Validator/Attributes/ValidateGroupNotEmptyAttribute.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         using System.Collections;
  19
  20         /// <summary>
  21         /// Validate that at least one of the properties in the group is not null or empty (for strings)
  22         /// </summary>
  23         [Serializable]
  24         public class ValidateGroupNotEmptyAttribute : AbstractValidationAttribute
  25         {
  26                 private string group;
  27                 private static IDictionary groupsPerType = Hashtable.Synchronized(new Hashtable());
  28
  29                 /// <summary>
  30                 /// Initializes a new instance of the <see cref="ValidateGroupNotEmptyAttribute"/> class.
  31                 /// </summary>
  32                 /// <param name="group">The group.</param>
  33                 public ValidateGroupNotEmptyAttribute(string group)
  34                 {
  35                         this.group = group;
  36                 }
  37
  38                 /// <summary>
  39                 /// Initializes a new instance of the <see cref="ValidateGroupNotEmptyAttribute"/> class.
  40                 /// </summary>
  41                 /// <param name="group">The group.</param>
  42                 /// <param name="errorMessage">The error message.</param>
  43                 public ValidateGroupNotEmptyAttribute(string group, string errorMessage) : base(errorMessage)
  44                 {
  45                         this.group = group;
  46                 }
  47
  48                 /// <summary>
  49                 /// Constructs and configures an <see cref="IValidator"/>
  50                 /// instance based on the properties set on the attribute instance.
  51                 /// </summary>
  52                 /// <returns></returns>
  53                 public override IValidator Build()
  54                 {
  55                         throw new NotSupportedException("You must call Build with a type parameter");
  56                 }
  57
  58                 /// <summary>
  59                 /// Constructs and configures an <see cref="IValidator"/>
  60                 /// instance based on the properties set on the attribute instance.
  61                 /// </summary>
  62                 /// <param name="validatorRunner"></param>
  63                 /// <param name="type"></param>
  64                 /// <returns></returns>
  65                 public override IValidator Build(ValidatorRunner validatorRunner, Type type)
  66                 {
  67                         GroupNotEmptyValidator validator = (GroupNotEmptyValidator)
  68                                                            validatorRunner.ExtendedProperties[group];
  69                         if (validator == null)
  70                         {
  71                                 validatorRunner.ExtendedProperties[group] = validator
  72                                                                             = new GroupNotEmptyValidator(group);
  73                         }
  74                         ConfigureValidatorMessage(validator);
  75
  76                         return validator;
  77                 }
  78         }
  79 }