How to use

changeImplementation

method

in

org.apache.tapestry5.plastic.PlasticMethod

private void bridgeServiceMethodToFilterMethod(PlasticMethod method, final PlasticField filterField,
                        final PlasticField nextField, final int position, MethodSignature ms, final MethodSignature fms)
{
  method.changeImplementation(new InstructionBuilderCallback()
  {
    @Override
    public void doBuild(InstructionBuilder builder)
    {
      builder.loadThis().getField(filterField);
      int argumentIndex = 0;
      for (int i = 0; i < fms.getParameterTypes().length; i++)
      {
        if (i == position)
        {
          builder.loadThis().getField(nextField);
        } else
        {
          builder.loadArgument(argumentIndex++);
        }
      }
      builder.invoke(fms.getMethod()).returnResult();
    }
  });
}

private void bridgeServiceMethodToFilterMethod(PlasticMethod method, final PlasticField filterField,
                        final PlasticField nextField, final int position, MethodSignature ms, final MethodSignature fms)
{
  method.changeImplementation(new InstructionBuilderCallback()
  {
    @Override
    public void doBuild(InstructionBuilder builder)
    {
      builder.loadThis().getField(filterField);
      int argumentIndex = 0;
      for (int i = 0; i < fms.getParameterTypes().length; i++)
      {
        if (i == position)
        {
          builder.loadThis().getField(nextField);
        } else
        {
          builder.loadArgument(argumentIndex++);
        }
      }
      builder.invoke(fms.getMethod()).returnResult();
    }
  });
}

public void implementNoOpMethod(MethodDescription method, String format, Object... arguments)
{
  final String message = String.format(format, arguments);
  plasticClass.introduceMethod(method).changeImplementation(new InstructionBuilderCallback()
  {
    public void doBuild(InstructionBuilder builder)
    {
      builder.throwException(RuntimeException.class, message);
    }
  });
}

@Override
public PlasticMethod introduceMethod(MethodDescription description, InstructionBuilderCallback callback)
{
  check();
  // TODO: optimize this so that a default implementation is not created.
  return introduceMethod(description).changeImplementation(callback);
}

@Override
public PlasticMethod introduceMethod(MethodDescription description, InstructionBuilderCallback callback)
{
  check();
  // TODO: optimize this so that a default implementation is not created.
  return introduceMethod(description).changeImplementation(callback);
}

private void implementDispatchMethod(final PlasticClass plasticClass, final boolean isRoot, final MutableComponentModel model, final Flow<EventHandlerMethod> eventHandlerMethods)
  plasticClass.introduceMethod(TransformConstants.DISPATCH_COMPONENT_EVENT_DESCRIPTION).changeImplementation(new InstructionBuilderCallback()

private void implementMethod(PlasticClass plasticClass, final Method method, final PlasticField commandsField)
  plasticClass.introduceMethod(method).changeImplementation(new InstructionBuilderCallback()

private void implementMethod(PlasticClass plasticClass, final Method method, final PlasticField commandsField)
  plasticClass.introduceMethod(method).changeImplementation(new InstructionBuilderCallback()

/**
 * Creates a method that does a conversion from Object to the expected root type, with
 * a null check.
 */
private void implementGetRoot()
{
  getRootMethod = plasticClass.introducePrivateMethod(PlasticUtils.toTypeName(rootType), "getRoot",
      SINGLE_OBJECT_ARGUMENT, null);
  getRootMethod.changeImplementation(new InstructionBuilderCallback()
  {
    public void doBuild(InstructionBuilder builder)
    {
      builder.loadArgument(0).dupe().when(Condition.NULL, new InstructionBuilderCallback()
      {
        public void doBuild(InstructionBuilder builder)
        {
          builder.throwException(NullPointerException.class,
              String.format("Root object of property expression '%s' is null.", expression));
        }
      });
      builder.checkcast(rootType).returnResult();
    }
  });
}

method.changeImplementation(new InstructionBuilderCallback()

method.changeImplementation(new InstructionBuilderCallback()

delegateMethod.changeImplementation(new InstructionBuilderCallback()

delegateMethod.changeImplementation(new InstructionBuilderCallback()

interfaceMethod.changeImplementation(new InstructionBuilderCallback()

delegateMethod.changeImplementation(new InstructionBuilderCallback()
plasticClass.introduceMethod(WRITE_REPLACE).changeImplementation(new InstructionBuilderCallback()

delegateMethod.changeImplementation(returnCreateObject);

delegateMethod.changeImplementation(new InstructionBuilderCallback()
plasticClass.introduceMethod(WRITE_REPLACE).changeImplementation(new InstructionBuilderCallback()

    null, null);
delegateMethod.changeImplementation(new InstructionBuilderCallback()

    null, null);
delegateMethod.changeImplementation(new InstructionBuilderCallback()

    SINGLE_OBJECT_ARGUMENT, null);
navMethod.changeImplementation(new InstructionBuilderCallback()