View Javadoc

    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  package org.apache.myfaces.orchestra.viewController;
    20
    21  import org.apache.myfaces.orchestra.annotation.AnnotationInfo;
    22  import org.apache.myfaces.orchestra.annotation.AnnotationInfoManager;
    23  import org.apache.myfaces.orchestra.lib.OrchestraException;
    24
    25  import java.lang.reflect.InvocationTargetException;
    26  import java.lang.reflect.Method;
    27
    28  /**
    29   * Execute the various viewController events on the viewController by calling
    30   * the corresponding annotated method.
    31   */
    32  public class AnnotationsViewControllerExecutor extends AbstractViewControllerExecutor
    33  {
    34      private final AnnotationInfoManager annotationInfoManager;
    35
    36      public AnnotationsViewControllerExecutor(AnnotationInfoManager annotationInfoManager)
    37      {
    38          this.annotationInfoManager = annotationInfoManager;
    39      }
    40
    41      protected void invokeMethod(Object bean, Method method)
    42      {
    43          try
    44          {
    45              method.invoke(bean, (Object[]) null);
    46          }
    47          catch (IllegalAccessException e)
    48          {
    49              throw new OrchestraException(e);
    50          }
    51          catch (InvocationTargetException e)
    52          {
    53              throw new OrchestraException(e);
    54          }
    55      }
    56
    57      public boolean invokeInitView(String beanName, Object bean)
    58      {
    59          AnnotationInfo annotationsInfo = annotationInfoManager.getAnnotationInfoByBeanName(beanName);
    60          if (annotationsInfo != null)
    61          {
    62              Method method = annotationsInfo.getInitViewMethod();
    63              if (method != null)
    64              {
    65                  invokeMethod(bean, method);
    66                  return true;
    67              }
    68          }
    69          return false;
    70      }
    71
    72      public boolean invokePreRenderView(String beanName, Object bean)
    73      {
    74          AnnotationInfo annotationsInfo = annotationInfoManager.getAnnotationInfoByBeanName(beanName);
    75          if (annotationsInfo != null)
    76          {
    77              Method method = annotationsInfo.getPreRenderViewMethod();
    78              if (method != null)
    79              {
    80                  invokeMethod(bean, method);
    81                  return true;
    82              }
    83          }
    84          return false;
    85      }
    86
    87      public boolean invokePreProcess(String beanName, Object bean)
    88      {
    89          AnnotationInfo annotationsInfo = annotationInfoManager.getAnnotationInfoByBeanName(beanName);
    90          if (annotationsInfo != null)
    91          {
    92              Method method = annotationsInfo.getPreProcessMethod();
    93              if (method != null)
    94              {
    95                  invokeMethod(bean, method);
    96                  return true;
    97              }
    98          }
    99          return false;
    100     }
    101 }