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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010-2011 Oracle and/or its affiliates. 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
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/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 packager/legal/LICENSE.txt.
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 * GPL Classpath Exception:
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package com.sun.jersey.api.client;

import com.sun.jersey.core.header.OutBoundHeaders;
import java.util.Locale;
import javax.ws.rs.core.Cookie;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;

/**
 * A partial implementation of {@link RequestBuilder} that implements
 * the methods on {@link RequestBuilder} but leaves undefined the build 
 * methods for constructing the request.
 * 
 * @param  the type than implements {@link RequestBuilder}.
 * @author [email protected]
 */
@SuppressWarnings("unchecked")
public abstract class PartialRequestBuilder 
        implements RequestBuilder {

    protected Object entity;
    
    protected MultivaluedMap metadata;
    
    protected PartialRequestBuilder() {
        metadata = new OutBoundHeaders();
    }
    
    public T entity(Object entity) {
        this.entity = entity;
        return (T)this;
    }

    public T entity(Object entity, MediaType type) {
        entity(entity);
        type(type);
        return (T)this;
    }

    public T entity(Object entity, String type) {
        entity(entity);
        type(type);
        return (T)this;
    }
    
    public T type(MediaType type) {
        getMetadata().putSingle("Content-Type", type);        
        return (T)this;
    }
        
    public T type(String type) {
        getMetadata().putSingle("Content-Type", MediaType.valueOf(type));        
        return (T)this;
    }
        
    public T accept(MediaType... types) {
        for (MediaType type : types)
            getMetadata().add("Accept", type);
        return (T)this;
    }
    
    public T accept(String... types) {
        for (String type : types)
            getMetadata().add("Accept", type);
        return (T)this;
    }
    
    public T acceptLanguage(Locale... locales) {
        for (Locale locale : locales)
            getMetadata().add("Accept-Language", locale);
        return (T)this;
    }

    public T acceptLanguage(String... locales) {
        for (String locale : locales)
            getMetadata().add("Accept-Language", locale);
        return (T)this;
    }    
    
    public T cookie(Cookie cookie) {
        getMetadata().add("Cookie", cookie);
        return (T)this;
    }
    
    public T header(String name, Object value) {
        getMetadata().add(name, value);
        return (T)this;
    }
    
    private MultivaluedMap getMetadata() {
        if (metadata != null) return metadata;
        
        return metadata = new OutBoundHeaders();
    }
}