/*
* Copyright (C) 2003-2011 eXo Platform SAS.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.etk.reflect.apt.jxlr.metadata;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import javax.lang.model.element.AnnotationMirror;
import javax.lang.model.element.AnnotationValue;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.VariableElement;
import javax.lang.model.util.ElementFilter;
import org.etk.reflect.api.metadata.AnnotationMetadata;
/**
* Created by The eXo Platform SAS
* Author : eXoPlatform
* exo@exoplatform.com
* Jul 13, 2011
*/
public abstract class JxLAnnotationMetadata<E> implements AnnotationMetadata<Object, E, AnnotationMirror, ExecutableElement> {
@Override
public Object getAnnotationType(AnnotationMirror annotationMirror) {
return annotationMirror.getAnnotationType();
}
@Override
public Collection<ExecutableElement> getAnnotationParameters(AnnotationMirror annotation) {
return ElementFilter.methodsIn(annotation.getAnnotationType().asElement().getEnclosedElements());
}
@Override
public String getAnnotationParameterName(ExecutableElement parameter) {
return parameter.getSimpleName().toString();
}
@Override
public Object getAnnotationParameterType(ExecutableElement parameter) {
return parameter.getReturnType();
}
@Override
public List<?> getAnnotationParameterValue(AnnotationMirror annotation, ExecutableElement parameter) {
AnnotationValue annotationValue = annotation.getElementValues().get(parameter);
if (annotationValue == null) {
throw new UnsupportedOperationException();
} else {
Object value = annotationValue.getValue();
if (value instanceof List) {
List list = new ArrayList((List)value);
for (int i = 0;i < list.size();i++) {
list.set(i, unwrap(list.get(i)));
}
return list;
} else {
return Arrays.asList(unwrap(value));
}
}
}
private Object unwrap(Object o) {
if (o instanceof VariableElement) {
return ((VariableElement)o).getSimpleName().toString();
} else if (o instanceof AnnotationValue) {
return ((AnnotationValue)o).getValue();
} else {
return o;
}
}
}