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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one
    3    * or more contributor license agreements.  See the NOTICE file
    4    * distributed with this work for additional information
    5    * regarding copyright ownership.  The ASF licenses this file
    6    * to you under the Apache License, Version 2.0 (the
    7    * "License"); you may not use this file except in compliance
    8    * with the License.  You may obtain a copy of the License at
    9    *
    10   *   http://www.apache.org/licenses/LICENSE-2.0
    11   *
    12   * Unless required by applicable law or agreed to in writing,
    13   * software distributed under the License is distributed on an
    14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    15   * KIND, either express or implied.  See the License for the
    16   * specific language governing permissions and limitations
    17   * under the License.
    18   */
    19
    20  package org.apache.myfaces.orchestra.conversation.spring;
    21
    22  import java.io.Serializable;
    23
    24  import org.aopalliance.aop.Advice;
    25  import org.springframework.aop.Pointcut;
    26  import org.springframework.aop.PointcutAdvisor;
    27
    28  /**
    29   * Define a trivial Advisor object that always applies to the class passed to it.
    30   * <p>
    31   * Spring requires Advisor objects to be returned rather than Advices. Advisors can implement various interfaces to
    32   * control which classes or methods they get applied to, but here the OrchestraAdvisorBeanPostProcessor only returns an
    33   * instance of this for classes that it really *should* apply to, and the advices always apply to all methods, so there
    34   * is really nothing for this Advisor to do.
    35   * <p>
    36   * TODO: maybe it would be nice to allow an orchestra scope object to hold Advisors as well as just Advices, so that
    37   * users can configure specific code to run only for specific methods of orchestra beans.
    38   * <p>
    39   * NB: In Spring2.5, this class can simply implement Advisor, and it will be applied to all methods. However in
    40   * Spring2.0, class DefaultAdvisorChainFactory only accepts PointcutAdvisor or IntroductionAdvisor, and silently ignores
    41   * Advisor classes that are not of those types. So here for Spring2.x compatibility we need to make this class a
    42   * PointcutAdvisor with a dummy pointcut that matches all methods...
    43   */
    44  class SimpleAdvisor implements PointcutAdvisor, Serializable
    45  {
    46      private Advice advice;
    47
    48      public SimpleAdvisor(Advice advice)
    49      {
    50          this.advice = advice;
    51      }
    52
    53      public Advice getAdvice()
    54      {
    55          return advice;
    56      }
    57
    58      public boolean isPerInstance()
    59      {
    60          return false;
    61      }
    62
    63      public Pointcut getPointcut()
    64      {
    65          return Pointcut.TRUE;
    66      }
    67  }