/// <summary>
/// Gets a validator for the specified target type.
/// </summary>
/// <param name="targetType">The target type.</param>
/// <returns>The <see cref="IValidator" /> for the specified type or <c>null</c> if no validator is available for the specified type.</returns>
/// <exception cref="ArgumentNullException">The <paramref name="targetType" /> is <c>null</c>.</exception>
/// <remarks>If there are more than once validator provider and they retrieve more than once validator all of these will be aggregated into a single <see cref="CompositeValidator" />.</remarks>
protected override IValidator GetValidator(Type targetType)
{
IValidator validator;
lock (_syncObj)
{
IList <IValidator> discoveredValidators = _validatorProviders.Select(validatorProvider => validatorProvider.GetValidator(targetType)).Where(discoveredValidator => discoveredValidator != null).ToList();
if (discoveredValidators.Count > 1)
{
var composite = new CompositeValidator();
foreach (IValidator discoveredValidator in discoveredValidators)
{
composite.Add(discoveredValidator);
}
validator = composite;
}
else
{
validator = discoveredValidators.FirstOrDefault();
}
}
return(validator);
}
/// <summary>
/// Gets a validator for the specified target type.
/// </summary>
/// <param name="targetType">The target type.</param>
/// <returns>The <see cref="IValidator" /> for the specified type or <c>null</c> if no validator is available for the specified type.</returns>
/// <exception cref="ArgumentNullException">The <paramref name="targetType" /> is <c>null</c>.</exception>
/// <remarks>If there are more than once validator provider and they retrieve more than once validator all of these will be aggregated into a single <see cref="CompositeValidator" />.</remarks>
protected override IValidator GetValidator(Type targetType)
{
IValidator validator;
lock (_syncObj)
{
IList<IValidator> discoveredValidators = _validatorProviders.Select(validatorProvider => validatorProvider.GetValidator(targetType)).Where(discoveredValidator => discoveredValidator != null).ToList();
if (discoveredValidators.Count > 1)
{
var composite = new CompositeValidator();
foreach (var discoveredValidator in discoveredValidators)
{
composite.Add(discoveredValidator);
}
validator = composite;
}
else
{
validator = discoveredValidators.FirstOrDefault();
}
}
return validator;
}