import java.lang.annotation.ElementType;

import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;

import java.lang.annotation.Target;



@Target( ...{ ElementType.METHOD })

@Retention(RetentionPolicy.RUNTIME)

public @interface InjectPageLink ...{

    String value();

}   

import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import org.apache.hivemind.ApplicationRuntimeException;
import org.apache.hivemind.Location;
import org.apache.hivemind.service.BodyBuilder;
import org.apache.hivemind.service.MethodSignature;
import org.apache.tapestry.annotations.AnnotationUtils;
import org.apache.tapestry.annotations.MethodAnnotationEnhancementWorker;    
  import org.apache.tapestry.engine.ILink;
import org.apache.tapestry.enhance.EnhancementOperation;
import org.apache.tapestry.spec.IComponentSpecification;

public class InjectPageLinkAnnotationWorker implements 
               MethodAnnotationEnhancementWorker ...{
public void performEnhancement(EnhancementOperation op,
                        IComponentSpecification spec, 
                         Method method, Location location) ...{
if (!method.getReturnType().equals(ILink.class)) throw new 
                ApplicationRuntimeException(
"InjectPage annotation must return ILink");
InjectPageLink injectPageLink = method.getAnnotation(InjectPageLink.class);
String pageName = injectPageLink.value();
BodyBuilder builder = new BodyBuilder();
 builder.begin();
builder.addln(
"return getPage().getRequestCycle().getInfrastructure().getServiceMap().getService(  
           org.apache.tapestry.Tapestry.PAGE_SERVICE).getLink(false,\"{0}\");",pageName);
builder.end();
op.addMethod(Modifier.PUBLIC, new MethodSignature(method), 
     builder.toString(), location);
if (isGetter(method))
op.claimReadonlyProperty(AnnotationUtils.getPropertyName(method));
}
boolean isGetter(Method method) ...{
return method.getName().startsWith("get") && method.getParameterTypes().length == 0;   
}
}  

import java.lang.annotation.ElementType;

import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;

import java.lang.annotation.Target;



@Target( ...{ ElementType.METHOD })

@Retention(RetentionPolicy.RUNTIME)

public @interface InjectExternalLink ...{

    String value();

}