#region License
/*
* Copyright 2002-2004 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#endregion
using System;
using System.Collections;
using Common.Logging;
using Spring.Expressions;
using Spring.Util;
namespace Spring.Validation.Actions{
public class ExceptionAction : BaseValidationAction
{
private ILog log = LogManager.GetLogger(typeof(ExceptionAction));
private IExpression throwsExpression;
/// <summary>
/// Initializes a new instance of the <see cref="ExceptionAction"/> class.
/// </summary>
public ExceptionAction()
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ExceptionAction"/> class.
/// </summary>
/// <param name="exceptionExpression">Expression that defines the exception to throw when the validator is not valid.</param>
public ExceptionAction(string exceptionExpression)
: this((exceptionExpression != null ? Expression.Parse(exceptionExpression) : null))
{}
/// <summary>
/// Initializes a new instance of the <see cref="ExceptionAction"/> class with an expression
/// that defines the exception to throw.
/// </summary>
public ExceptionAction(IExpression throwsExpression)
{
this.throwsExpression = throwsExpression;
}
/// <summary>
/// Gets or sets the exception to throw
/// </summary>
/// <value>The throws.</value>
public IExpression ThrowsExpression
{
get { return throwsExpression; }
set { throwsExpression = value; }
}
/// <summary>
/// Called when associated validator is invalid.
/// </summary>
/// <param name="validationContext">Validation context.</param>
/// <param name="contextParams">Additional context parameters.</param>
/// <param name="errors">Validation errors container.</param>
protected override void OnInvalid(object validationContext, IDictionary contextParams, IValidationErrors errors)
{
if (throwsExpression != null)
{
object o = null;
try
{
o = throwsExpression.GetValue(null, contextParams);
}
catch (Exception e)
{
log.Error("Was not able to evaluate action expression [" + throwsExpression + "]", e);
}
Exception exception = o as Exception;
if (exception != null)
{
throw exception;
}
}
throw new ValidationException(errors);
}
}
}
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