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    1   //========================================================================
    2   //$Id: PostConstructCallback.java 1540 2007-01-19 12:24:10Z janb $
    3   //Copyright 2006 Mort Bay Consulting Pty. Ltd.
    4   //------------------------------------------------------------------------
    5   //Licensed under the Apache License, Version 2.0 (the "License");
    6   //you may not use this file except in compliance with the License.
    7   //You may obtain a copy of the License at
    8   //http://www.apache.org/licenses/LICENSE-2.0
    9   //Unless required by applicable law or agreed to in writing, software
    10  //distributed under the License is distributed on an "AS IS" BASIS,
    11  //WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  //See the License for the specific language governing permissions and
    13  //limitations under the License.
    14  //========================================================================
    15
    16  package org.mortbay.jetty.plus.annotation;
    17
    18  import java.lang.reflect.Method;
    19  import java.lang.reflect.Modifier;
    20
    21  import org.mortbay.log.Log;
    22
    23  /**
    24   * PostConstructCallback
    25   *
    26   *
    27   */
    28  public class PostConstructCallback extends LifeCycleCallback
    29  {
    30
    31      /**
    32       * Commons Annotation Specification section 2.5
    33       *  - no params
    34       *  - must be void return
    35       *  - no checked exceptions
    36       *  - cannot be static
    37       * @see org.mortbay.jetty.plus.annotation.LifeCycleCallback#validate(java.lang.Class, java.lang.reflect.Method)
    38       */
    39      public void validate(Class clazz, Method method)
    40      {
    41          if (method.getExceptionTypes().length > 0)
    42              throw new IllegalArgumentException(clazz.getName()+"."+method.getName()+ " cannot not throw a checked exception");
    43
    44          if (!method.getReturnType().equals(Void.TYPE))
    45              throw new IllegalArgumentException(clazz.getName()+"."+method.getName()+ " cannot not have a return type");
    46
    47          if (Modifier.isStatic(method.getModifiers()))
    48              throw new IllegalArgumentException(clazz.getName()+"."+method.getName()+ " cannot be static");
    49      }
    50
    51
    52      public void callback (Object instance)
    53      throws Exception
    54      {
    55          super.callback(instance);
    56      }
    57
    58      public boolean equals (Object o)
    59      {
    60          if (super.equals(o) && (o instanceof PostConstructCallback))
    61              return true;
    62          return false;
    63      }
    64  }