//===============================================================================
// Microsoft patterns & practices Enterprise Library
// Validation Application Block
//===============================================================================
// Copyright © Microsoft Corporation. All rights reserved.
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY
// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
// LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
// FITNESS FOR A PARTICULAR PURPOSE.
//===============================================================================
using System.Collections.Generic;
using Transformalize.Libs.EnterpriseLibrary.Common.Configuration;
using Transformalize.Libs.EnterpriseLibrary.Validation.Configuration;
namespace Transformalize.Libs.EnterpriseLibrary.Validation.Validators
{
/// <summary>
/// Validates an object by checking if it belongs to a set.
/// </summary>
[ConfigurationElementType(typeof(DomainValidatorData))]
public class DomainValidator<T> : ValueValidator<T>
{
private IEnumerable<T> domain;
/// <summary>
/// <para>Initializes a new instance of the <see cref="DomainValidator{T}"/>.</para>
/// </summary>
/// <param name="domain">List of values to be used in the validation.</param>
public DomainValidator(IEnumerable<T> domain)
: this(domain, false)
{ }
/// <summary>
/// <para>Initializes a new instance of the <see cref="DomainValidator{T}"/>.</para>
/// </summary>
/// <param name="negated">True if the validator must negate the result of the validation.</param>
/// <param name="domain">List of values to be used in the validation.</param>
public DomainValidator(bool negated, params T[] domain)
: this(new List<T>(domain), null, negated)
{
}
/// <summary>
/// <para>Initializes a new instance of the <see cref="DomainValidator{T}"/>.</para>
/// </summary>
/// <param name="messageTemplate">The message template to use when logging results.</param>
/// <param name="domain">List of values to be used in the validation.</param>
public DomainValidator(string messageTemplate, params T[] domain)
: this(new List<T>(domain), messageTemplate, false)
{ }
/// <summary>
/// <para>Initializes a new instance of the <see cref="DomainValidator{T}"/>.</para>
/// </summary>
/// <param name="domain">List of values to be used in the validation.</param>
/// <param name="negated">True if the validator must negate the result of the validation.</param>
public DomainValidator(IEnumerable<T> domain, bool negated)
: this(domain, null, negated)
{
}
/// <summary>
/// <para>Initializes a new instance of the <see cref="DomainValidator{T}"/>.</para>
/// </summary>
/// <param name="domain">List of values to be used in the validation.</param>
/// <param name="messageTemplate">The message template to use when logging results.</param>
/// <param name="negated">True if the validator must negate the result of the validation.</param>
public DomainValidator(IEnumerable<T> domain, string messageTemplate, bool negated)
: base(messageTemplate, null, negated)
{
ValidatorArgumentsValidatorHelper.ValidateDomainValidator(domain);
this.domain = domain;
}
/// <summary>
/// Implements the validation logic for the receiver.
/// </summary>
/// <param name="objectToValidate">The object to validate.</param>
/// <param name="currentTarget">The object on the behalf of which the validation is performed.</param>
/// <param name="key">The key that identifies the source of <paramref name="objectToValidate"/>.</param>
/// <param name="validationResults">The validation results to which the outcome of the validation should be stored.</param>
protected override void DoValidate(T objectToValidate, object currentTarget, string key, ValidationResults validationResults)
{
bool logError = false;
bool isObjectToValidateNull = objectToValidate == null;
if (!isObjectToValidateNull)
{
logError = true;
foreach (T element in domain)
{
if (element.Equals(objectToValidate))
{
logError = false;
break;
}
}
}
if (isObjectToValidateNull || (logError != Negated))
{
this.LogValidationResult(validationResults,
GetMessage(objectToValidate, key),
currentTarget,
key);
}
}
/// <summary>
/// Gets the Default Message Template when the validator is non negated.
/// </summary>
protected override string DefaultNonNegatedMessageTemplate
{
get { return Resources.DomainNonNegatedDefaultMessageTemplate; }
}
/// <summary>
/// Gets the Default Message Template when the validator is negated.
/// </summary>
protected override string DefaultNegatedMessageTemplate
{
get { return Resources.DomainNegatedDefaultMessageTemplate; }
}
/// <summary>
/// The set of items we're checking for membership in.
/// </summary>
public List<T> Domain
{
get { return new List<T>(this.domain); }
}
}
}