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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * ====================================================================
 * 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
 * .
 *
 */

package org.apache.http;

/**
 * One element of an HTTP {@link Header header} value consisting of
 * a name / value pair and a number of optional name / value parameters.
 * 
 * Some HTTP headers (such as the set-cookie header) have values that
 * can be decomposed into multiple elements.  Such headers must be in the
 * following form:
 * 
 *  * header  = [ element ] *( "," [ element ] )
 * element = name [ "=" [ value ] ] *( ";" [ param ] )
 * param   = name [ "=" [ value ] ]
 *
 * name    = token
 * value   = ( token | quoted-string )
 *
 * token         = 1*<any char except "=", ",", ";", <"> and
 *                       white space>
 * quoted-string = <"> *( text | quoted-char ) <">
 * text          = any char except <">
 * quoted-char   = "\" char
 * 
 * 
 * Any amount of white space is allowed between any part of the
 * header, element or param and is ignored. A missing value in any
 * element or param will be stored as the empty {@link String};
 * if the "=" is also missing null will be stored instead.
 *
 * @since 4.0
 */
public interface HeaderElement {

    /**
     * Returns header element name.
     *
     * @return header element name
     */
    String getName();

    /**
     * Returns header element value.
     *
     * @return header element value
     */
    String getValue();

    /**
     * Returns an array of name / value pairs.
     *
     * @return array of name / value pairs
     */
    NameValuePair[] getParameters();

    /**
     * Returns the first parameter with the given name.
     *
     * @param name parameter name
     *
     * @return name / value pair
     */
    NameValuePair getParameterByName(String name);

    /**
     * Returns the total count of parameters.
     *
     * @return parameter count
     */
    int getParameterCount();

    /**
     * Returns parameter with the given index.
     *
     * @param index index
     * @return name / value pair
     */
    NameValuePair getParameter(int index);

}