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JAnnocessor Model Adapter

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/**
 * Copyright 2011 Nikolche Mihajlovski
 *
 * This file is part of JAnnocessor.
 *
 * JAnnocessor is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * JAnnocessor 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with JAnnocessor.  If not, see .
 */

package org.jannocessor.adapter.structure;

import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

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.type.TypeMirror;
import javax.lang.model.util.Elements;
import javax.lang.model.util.Types;

import org.jannocessor.adapter.JavaCodeModelAdapter;
import org.jannocessor.collection.Power;
import org.jannocessor.collection.api.PowerList;
import org.jannocessor.collection.api.PowerMap;
import org.jannocessor.model.CodeNode;
import org.jannocessor.model.JavaElement;
import org.jannocessor.model.structure.JavaMetadata;
import org.jannocessor.model.type.JavaType;
import org.jannocessor.model.util.ModelUtils;
import org.jannocessor.model.variable.JavaEnumConstant;

public class JavaMetadataAdapter extends JavaCodeModelAdapter implements
		JavaMetadata {

	private static final long serialVersionUID = -7187042825188441175L;

	private final AnnotationMirror annotationMirror;

	public JavaMetadataAdapter(AnnotationMirror annotationMirror,
			Elements elementUtils, Types typeUtils) {
		super(elementUtils, typeUtils);
		this.annotationMirror = annotationMirror;

	}

	@Override
	public JavaType getAnnotation() {
		return getTypeAdapter(annotationMirror.getAnnotationType());
	}

	@Override
	public PowerMap getValues() {
		return extractValues(annotationMirror.getElementValues());
	}

	public PowerMap getValuesWithDefaults() {
		// FIXME: publish to the API as read-only property
		return extractValues(getElementUtils().getElementValuesWithDefaults(
				annotationMirror));
	}

	private PowerMap extractValues(
			Map elementValues) {
		PowerMap values = Power.map();

		for (Entry entry : elementValues
				.entrySet()) {
			String key = entry.getKey().getSimpleName().toString();
			Object value = translate(entry.getValue().getValue());
			values.put(key, value);
		}

		return values;
	}

	@SuppressWarnings("unchecked")
	private Object translate(Object value) {
		if (value instanceof List) {
			PowerList