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 *
 * Copyright (c) 2010-2011 Oracle and/or its affiliates. All rights reserved.
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 * The contents of this file are subject to the terms of either the GNU
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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
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 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
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 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * 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
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package com.sun.jersey.server.impl.model.method;

import com.sun.jersey.core.header.MediaTypes;
import com.sun.jersey.api.core.HttpContext;
import com.sun.jersey.api.uri.UriTemplate;
import com.sun.jersey.spi.dispatch.RequestDispatcher;
import java.util.List;
import java.util.Map;
import javax.ws.rs.core.Response;

/**
 *
 * @author [email protected]
 */
public final class ResourceHttpOptionsMethod extends ResourceMethod {
    
    public static class OptionsRequestDispatcher implements RequestDispatcher {
        protected final String allow;
        
        public OptionsRequestDispatcher(Map> methods) {
            this.allow = getAllow(methods);
        }
        
        private String getAllow(Map> methods) {
            StringBuilder s = new StringBuilder("OPTIONS");
            for (String method : methods.keySet()) {
                s.append(',').append(method);
            }

            return s.toString();
        }
    
        public void dispatch(Object resource, HttpContext context) {
            Response r = Response.noContent().header("Allow", allow).build();
            context.getResponse().setResponse(r);
        }
    }
    
    public ResourceHttpOptionsMethod(Map> methods) {
        super("OPTIONS",
                UriTemplate.EMPTY,
                MediaTypes.GENERAL_MEDIA_TYPE_LIST, 
                MediaTypes.GENERAL_MEDIA_TYPE_LIST,
                false,
                new OptionsRequestDispatcher(methods));
    }
    
    @Override
    public String toString() {
        return "OPTIONS";
    }
}