aspects/fom-aspects/src/main/java/org/apache/axiom/fom/LinkUtil.java

/*
 * 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.axiom.fom;

import java.util.List;

import javax.activation.MimeType;

import org.apache.abdera.model.Link;
import org.apache.abdera.util.MimeTypeHelper;

public final class LinkUtil {
    private LinkUtil() {}

    public static Link selectLink(List<Link> links, String type, String hreflang) {
        for (Link link : links) {
            MimeType mt = link.getMimeType();
            boolean typematch = MimeTypeHelper.isMatch((mt != null) ? mt.toString() : null, type);
            boolean langmatch =
                "*".equals(hreflang) || ((hreflang != null) ? hreflang.equals(link.getHrefLang())
                    : link.getHrefLang() == null);
            if (typematch && langmatch)
                return link;
        }
        return null;
    }
}