cd.go.jrepresenter.LinksMapper Maven / Gradle / Ivy

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/*
 * Copyright 2017 ThoughtWorks, Inc.
 *
 * 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 cd.go.jrepresenter;

import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

public class LinksMapper {
    public static  Map toJSON(LinksProvider linksProvider, T model, RequestContext requestContext) {
        List links = linksProvider.getLinks(model, requestContext);
        if (links.isEmpty()) {
            return Collections.emptyMap();
        } else {
            Map linksMap = new LinkedHashMap<>();
            links.forEach(link -> linksMap.put(link.getName(), Collections.singletonMap("href", link.getHref())));
            return Collections.singletonMap("_links", linksMap);
        }

    }
}