#region License
/*
* Copyright 2002-2005 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
#region Imports
using System;
using System.Reflection;
using Spring.Core;
#endregion
namespace Spring.Core{
/// <summary>
/// Criteria that is satisfied if the return <see cref="System.Type"/> of a given
/// <see cref="System.Reflection.MethodInfo"/> matches a given <see cref="System.Type"/>.
/// </summary>
/// <author>Rick Evans</author>
public class MethodReturnTypeCriteria : ICriteria
{
#region Constants
/// <summary>
/// The return <see cref="System.Type"/> to match against if no
/// <see cref="System.Type"/> is provided explictly.
/// </summary>
private static readonly Type DefaultType = typeof (void);
#endregion
#region Constructor (s) / Destructor
/// <summary>
/// Creates a new instance of the
/// <see cref="MethodReturnTypeCriteria"/> class.
/// </summary>
public MethodReturnTypeCriteria()
: this(DefaultType)
{
}
/// <summary>
/// Creates a new instance of the
/// <see cref="MethodReturnTypeCriteria"/> class.
/// </summary>
/// <param name="type">
/// The <see cref="System.Type"/> that the return type of a given
/// <see cref="System.Reflection.MethodInfo"/> must match in order to satisfy
/// this criteria.
/// </param>
public MethodReturnTypeCriteria(Type type)
{
ReturnType = type;
}
#endregion
#region Properties
/// <summary>
/// The <see cref="System.Type"/> that the return type of a given
/// <see cref="System.Reflection.MethodInfo"/> must match in order to satisfy
/// this criteria.
/// </summary>
public Type ReturnType
{
get { return _type; }
set { _type = value == null ? DefaultType : value; }
}
#endregion
#region Methods
/// <summary>
/// Does the supplied <paramref name="datum"/> satisfy the criteria encapsulated by
/// this instance?
/// </summary>
/// <param name="datum">The datum to be checked by this criteria instance.</param>
/// <returns>
/// True if the supplied <paramref name="datum"/> satisfies the criteria encapsulated
/// by this instance; false if not or the supplied <paramref name="datum"/> is null.
/// </returns>
public bool IsSatisfied(object datum)
{
bool satisfied = false;
MethodInfo method = datum as MethodInfo;
if (method != null)
{
satisfied = method.ReturnType.Equals(ReturnType);
}
return satisfied;
}
#endregion
#region Fields
private Type _type;
#endregion
}
}
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