/*

 * ====================================================================

 * 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.

 * ====================================================================

 *

 * This software consists of voluntary contributions made by many

 * individuals on behalf of the Apache Software Foundation.  For more

 * information on the Apache Software Foundation, please see

 * <http://www.apache.org/>.

 *

 */



package org.apache.http.message;



import org.apache.http.Header;

import org.apache.http.HeaderElement;

import org.apache.http.ParseException;



/**

 * Basic implementation of {@link Header}.

 * 

 * @since 4.0

 */

public class BasicHeader implements Header, Cloneable {



    private final String name;

    private final String value;

    

    /**

     * Constructor with name and value

     *

     * @param name the header name

     * @param value the header value

     */

    public BasicHeader(final String name, final String value) {

        super();

        if (name == null) {

            throw new IllegalArgumentException("Name may not be null");

        }

        this.name = name;

        this.value = value;

    }



    public String getName() {

        return this.name;

    }



    public String getValue() {

        return this.value;

    }



    public String toString() {

        // no need for non-default formatting in toString()

        return BasicLineFormatter.DEFAULT.formatHeader(null, this).toString();

    }



    public HeaderElement[] getElements() throws ParseException {

        if (this.value != null) {

            // result intentionally not cached, it's probably not used again

            return BasicHeaderValueParser.parseElements(this.value, null);

        } else {

            return new HeaderElement[] {}; 

        }

    }



    public Object clone() throws CloneNotSupportedException {

        return super.clone();

    }

 

}