content: /*
   * Copyright (C) 2011 The Android Open Source Project
   *
   * 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.
   */
  
  
  package android.filterfw.core;
  
  import java.lang.reflect.Field;
  
  /**
   * @hide
   */
  public class ProgramPort extends FieldPort {
  
      protected String mVarName;
  
      public ProgramPort(Filter filter,
                         String name,
                         String varName,
                         Field field,
                         boolean hasDefault) {
          super(filter, name, field, hasDefault);
          mVarName = varName;
      }
  
      @Override
      public String toString() {
          return "Program " + super.toString();
      }
  
      @Override
      public synchronized void transfer(FilterContext context) {
          if (mValueWaiting) {
              try {
                  Object fieldValue = mField.get(mFilter);
                  if (fieldValue != null) {
                      Program program = (Program)fieldValue;
                      program.setHostValue(mVarName, mValue);
                      mValueWaiting = false;
                  }
              } catch (IllegalAccessException e) {
                  throw new RuntimeException(
                      "Access to program field '" + mField.getName() + "' was denied!");
              } catch (ClassCastException e) {
                  throw new RuntimeException("Non Program field '" + mField.getName()
                      + "' annotated with ProgramParameter!");
              }
          }
      }
  }
  