BodyExtractor.java

/*
 * Copyright (C) 2016 the original author or authors.
 *
 * 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 ro.pippo.controller.extractor;

import org.kohsuke.MetaInfServices;
import ro.pippo.controller.MethodParameter;
import ro.pippo.core.route.RouteContext;

import java.util.Collection;

/**
 * @author Decebal Suiu
 * @author James Moger
 */
@MetaInfServices
public class BodyExtractor implements MethodParameterExtractor {

    @Override
    public boolean isApplicable(MethodParameter parameter) {
        return parameter.isAnnotationPresent(Body.class);
    }

    @Override
    @SuppressWarnings("unchecked")
    public Object extract(MethodParameter parameter, RouteContext routeContext) {
        Class<?> parameterType = parameter.getParameterType();
        if (Collection.class.isAssignableFrom(parameterType)) {
            Class<? extends Collection> collectionType = (Class<? extends Collection>) parameterType;

            // TODO improve body collection support
            return routeContext.createEntityFromBody(collectionType);
        }

        return routeContext.createEntityFromBody(parameterType);
    }

}