acceptablemediatype.java

来自「resetful样式的ws样例,一种面向资源的webservices服务」· Java 代码 · 共 89 行

/*
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://jersey.dev.java.net/CDDL+GPL.html
 * or jersey/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at jersey/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
 * identifying information: "Portions Copyrighted [year]
 * [name of copyright owner]"
 * 
 * Contributor(s):
 * 
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.jersey.impl.http.header;

import com.sun.jersey.impl.http.header.reader.HttpHeaderReader;
import java.text.ParseException;
import javax.ws.rs.core.MediaType;
import java.util.Map;

public final class AcceptableMediaType extends MediaType implements QualityFactor {
    private final int q;

    public AcceptableMediaType(String p, String s) {
        super(p, s);
        q = DEFAULT_QUALITY_FACTOR;
    }
    
    public AcceptableMediaType(String p, String s, int q, Map<String, String> parameters) {
        super(p, s, parameters);
        this.q = q;
    }
        
    public int getQuality() {
        return q;
    }
    
    public static AcceptableMediaType valueOf(HttpHeaderReader reader) throws ParseException {
        // Skip any white space
        reader.hasNext();
        
        // Get the type
        String type = reader.nextToken();
        String subType = "*";
        // Some HTTP implements use "*" to mean "*/*"
        if (reader.hasNextSeparator('/', false)) {
            reader.next(false);
            // Get the subtype
            subType = reader.nextToken();
        }
        
        Map<String, String> parameters = null;
        int quality = DEFAULT_QUALITY_FACTOR;
        if (reader.hasNext()) {
            parameters = HttpHeaderReader.readParameters(reader);
            if (parameters != null) {
                String v = parameters.get(QUALITY_FACTOR);
                if (v != null)
                    quality = HttpHeaderReader.readQualityFactor(v);
            }
        }
        
        return new AcceptableMediaType(type, subType, quality, parameters);  
    }
}