/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.qpid.server.model.validation;
import java.util.Map;
import java.util.Set;
import javax.annotation.processing.AbstractProcessor;
import javax.annotation.processing.RoundEnvironment;
import javax.annotation.processing.SupportedAnnotationTypes;
import javax.lang.model.SourceVersion;
import javax.lang.model.element.AnnotationMirror;
import javax.lang.model.element.AnnotationValue;
import javax.lang.model.element.Element;
import javax.lang.model.element.ElementKind;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.TypeElement;
import javax.lang.model.util.Elements;
import javax.lang.model.util.Types;
import javax.tools.Diagnostic;
@SupportedAnnotationTypes(AttributeFieldValidation.MANAGED_ATTRIBUTE_FIELD_CLASS_NAME)
public class AttributeFieldValidation extends AbstractProcessor
{
public static final String MANAGED_ATTRIBUTE_FIELD_CLASS_NAME = "org.apache.qpid.server.model.ManagedAttributeField";
@Override
public SourceVersion getSupportedSourceVersion()
{
return SourceVersion.latest();
}
@Override
public boolean process(final Set<? extends TypeElement> annotations, final RoundEnvironment roundEnv)
{
Elements elementUtils = processingEnv.getElementUtils();
Types typeUtils = processingEnv.getTypeUtils();
TypeElement annotationElement = elementUtils.getTypeElement(MANAGED_ATTRIBUTE_FIELD_CLASS_NAME);
for (Element e : roundEnv.getElementsAnnotatedWith(annotationElement))
{
for(AnnotationMirror am : e.getAnnotationMirrors())
{
if(typeUtils.isSameType(am.getAnnotationType(), annotationElement.asType()))
{
for(Map.Entry<? extends ExecutableElement, ? extends AnnotationValue> entry : am.getElementValues().entrySet())
{
String elementName = entry.getKey().getSimpleName().toString();
if(elementName.equals("beforeSet") || elementName.equals("afterSet"))
{
String methodName = entry.getValue().getValue().toString();
if(!"".equals(methodName))
{
TypeElement parent = (TypeElement) e.getEnclosingElement();
if(!containsMethod(parent, methodName))
{
processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR,
"Could not find method '"
+ methodName
+ "' which is defined as the "
+ elementName
+ " action", e);
}
}
}
}
}
}
}
return false;
}
private boolean containsMethod(final TypeElement parent, final String methodName)
{
for(Element element : parent.getEnclosedElements())
{
if(element.getKind().equals(ElementKind.METHOD)
&& element.getSimpleName().toString().equals(methodName)
&& ((ExecutableElement)element).getParameters().isEmpty())
{
return true;
}
}
return false;
}
}