// Copyright 2010 The Apache Software Foundation
//
// 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 org.apache.tapestry5.ioc.internal;
import org.apache.tapestry5.ioc.GreenMarker;
import org.apache.tapestry5.ioc.Greeter;
import org.apache.tapestry5.ioc.Invocation;
import org.apache.tapestry5.ioc.MethodAdvice;
import org.apache.tapestry5.ioc.RedMarker;
import org.apache.tapestry5.ioc.ServiceResources;
import org.apache.tapestry5.ioc.annotations.Decorate;
import org.apache.tapestry5.ioc.annotations.Local;
import org.apache.tapestry5.ioc.annotations.Marker;
import org.apache.tapestry5.ioc.annotations.Order;
import org.apache.tapestry5.ioc.services.AspectDecorator;
import org.apache.tapestry5.ioc.services.AspectInterceptorBuilder;
public class DecorateByMarkerModule
{
@Decorate(serviceInterface=Greeter.class)
@GreenMarker
public static <T> T greeter(ServiceResources resources, T delegate, AspectDecorator aspectDecorator)
{
return doDecorate("foo", resources, delegate, aspectDecorator);
}
@Decorate(serviceInterface=Greeter.class, id="bar")
@GreenMarker
@Order("after:Greeter")
public static <T> T greeter2(ServiceResources resources, T delegate, AspectDecorator aspectDecorator)
{
return doDecorate("bar", resources, delegate, aspectDecorator);
}
@Decorate(serviceInterface=Greeter.class, id="baz")
@GreenMarker
@Order({"after:Greeter", "before:bar"})
public static <T> T greeter3(ServiceResources resources, T delegate, AspectDecorator aspectDecorator)
{
return doDecorate("baz", resources, delegate, aspectDecorator);
}
@Decorate(serviceInterface=Greeter.class, id="barney")
@Local
public static <T> T localAdvise(ServiceResources resources, T delegate, AspectDecorator aspectDecorator)
{
return doDecorate("barney", resources, delegate, aspectDecorator);
}
private static <T> T doDecorate(final String decoratorId, ServiceResources resources, T delegate, AspectDecorator aspectDecorator)
{
Class<T> serviceInterface = resources.getServiceInterface();
AspectInterceptorBuilder<T> builder = aspectDecorator.createBuilder(serviceInterface, delegate, String.format(
"<Interceptor for %s(%s)>", resources.getServiceId(), serviceInterface.getName()));
builder.adviseAllMethods(new MethodAdvice()
{
public void advise(Invocation invocation)
{
invocation.proceed();
Object result = invocation.getResult();
invocation.overrideResult(String.format("Decorated by %s[%s]", decoratorId, result));
}
});
return builder.build();
}
@Marker(RedMarker.class)
public Greeter buildRedGreeter()
{
return new Greeter()
{
public String getGreeting()
{
return "Red";
}
};
}
}