ProxyFactory.cs :  » Inversion-of-Control-Dependency-Injection » Spring.net » Spring » Aop » Framework » C# / CSharp Open Source

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C# / CSharp Open Source » Inversion of Control Dependency Injection » Spring.net 
Spring.net » Spring » Aop » Framework » ProxyFactory.cs
#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 AopAlliance.Intercept;

#endregion

namespace Spring.Aop.Framework{
  /// <summary>
  /// Factory for AOP proxies for programmatic use, rather than via a
  /// Spring.NET IoC container.
  /// </summary>
  /// <remarks>
  /// <p>
  /// This class provides a simple way of obtaining and configuring AOP
  /// proxies in code.
  /// </p>
  /// </remarks>
  /// <author>Rod Johnson</author>
  /// <author>Aleksandar Seovic (.NET)</author>
  [Serializable]
    public class ProxyFactory : AdvisedSupport
  {
      /// <summary>
    /// Creates a new instance of the <see cref="Spring.Aop.Framework.ProxyFactory"/>
    /// class.
    /// </summary>
    public ProxyFactory()
    {
    }

    /// <summary>
    /// Creates a new instance of the <see cref="Spring.Aop.Framework.ProxyFactory"/>
    /// class that proxys all of the interfaces exposed by the supplied
    /// <paramref name="target"/>.
    /// </summary>
    /// <param name="target">The object to proxy.</param>
    /// <exception cref="AopConfigException">
    /// If the <paramref name="target"/> is <cref lang="null"/>.
    /// </exception>
    public ProxyFactory(object target) : base(target)
    {
    }

      /// <summary>
      /// Creates a new instance of the <see cref="Spring.Aop.Framework.ProxyFactory"/>
      /// class that has no target object, only interfaces.
      /// </summary>
      /// <remarks>
      /// <p>
      /// Interceptors must be added if this factory is to do anything useful.
      /// </p>
      /// </remarks>
      /// <param name="interfaces">The interfaces to implement.</param>
      public ProxyFactory(Type[] interfaces) : base(interfaces)
      {
      }

        /// <summary>
        /// Creates a new instance of the <see cref="ProxyFactory"/> class for the 
        /// given interface and interceptor.
        /// </summary>
        /// <remarks>Convenience method for creating a proxy for a single interceptor
        /// , assuming that the interceptor handles all calls itself rather than delegating
        /// to a target, like in the case of remoting proxies.</remarks>
        /// <param name="proxyInterface">The interface that the proxy should implement.</param>
        /// <param name="interceptor">The interceptor that the proxy should invoke.</param>
        public ProxyFactory(Type proxyInterface, IInterceptor interceptor)
        {
            AddInterface(proxyInterface);
            AddAdvice(interceptor);
        }


        /// <summary>
        /// Create a new instance of the <see cref="ProxyFactory"/> class for the specified
        /// <see cref="ITargetSource"/> making the proxy implement the specified interface.
        /// </summary>
        /// <remarks></remarks>
        /// <param name="proxyInterface">The interface that the proxy should implement.</param>
        /// <param name="targetSource">The target source that the proxy should invoek.</param>
        public ProxyFactory(Type proxyInterface, ITargetSource targetSource)
        {
            AddInterface(proxyInterface);
            TargetSource = targetSource;
        }

      /// <summary>
      /// Creates a new proxy according to the settings in this factory.
      /// </summary>
      /// <remarks>
      /// <p>
      /// Can be called repeatedly; the effect of repeated invocations will
      /// (of course) vary if interfaces have been added or removed.
      /// </p>
      /// </remarks>
      /// <returns>An AOP proxy for target object.</returns>
      public virtual object GetProxy()
      {
          IAopProxy proxy = CreateAopProxy();
          return proxy.GetProxy();
      }

        #region Convenience Methods (Static) For Proxy Creation

      /// <summary>
      /// Creates a new proxy for the supplied <paramref name="proxyInterface"/>
      /// and <paramref name="interceptor"/>.
      /// </summary>
      /// <remarks>
      /// <p>
      /// This is a convenience method for creating a proxy for a single
      /// interceptor.
      /// </p>
      /// </remarks>
      /// <param name="proxyInterface">
      /// The interface that the proxy must implement.
      /// </param>
      /// <param name="interceptor">
      /// The interceptor that the proxy must invoke.
      /// </param>
      /// <returns>
      /// A new AOP proxy for the supplied <paramref name="proxyInterface"/>
      /// and <paramref name="interceptor"/>.
      /// </returns>
      public static object GetProxy(Type proxyInterface, IInterceptor interceptor)
      {
          ProxyFactory proxyFactory = new ProxyFactory();
          proxyFactory.AddInterface(proxyInterface);
          proxyFactory.AddAdvice(interceptor);
          return proxyFactory.GetProxy();
      }

      #endregion

  }
}
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