/*
 * 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.
 */
package org.apache.tomcat.util.http.fileupload;

import java.util.Iterator;

 This class provides support for accessing the headers for a file or form
item that was received within a multipart/form-data POST
request.
Since:
1.2.1/**
 * <p> This class provides support for accessing the headers for a file or form
 * item that was received within a <code>multipart/form-data</code> POST
 * request.</p>
 *
 * @since 1.2.1
 */
public interface FileItemHeaders {

    
Returns the value of the specified part header as a String.
If the part did not include a header of the specified name, this method
return null.  If there are multiple headers with the same
name, this method returns the first header in the item.  The header
name is case insensitive.
Params:
name – a String specifying the header name
Returns:
a String containing the value of the requested
        header, or null if the item does not have a header
        of that name/**
     * Returns the value of the specified part header as a <code>String</code>.
     *
     * If the part did not include a header of the specified name, this method
     * return <code>null</code>.  If there are multiple headers with the same
     * name, this method returns the first header in the item.  The header
     * name is case insensitive.
     *
     * @param name a <code>String</code> specifying the header name
     * @return a <code>String</code> containing the value of the requested
     *         header, or <code>null</code> if the item does not have a header
     *         of that name
     */
    String getHeader(String name);

    

Returns all the values of the specified item header as an
Iterator of String objects.


If the item did not include any headers of the specified name, this
method returns an empty Iterator. The header name is
case insensitive.

Params:
name – a String specifying the header name
Returns:
an Iterator containing the values of the
        requested header. If the item does not have any headers of
        that name, return an empty Iterator/**
     * <p>
     * Returns all the values of the specified item header as an
     * <code>Iterator</code> of <code>String</code> objects.
     * </p>
     * <p>
     * If the item did not include any headers of the specified name, this
     * method returns an empty <code>Iterator</code>. The header name is
     * case insensitive.
     * </p>
     *
     * @param name a <code>String</code> specifying the header name
     * @return an <code>Iterator</code> containing the values of the
     *         requested header. If the item does not have any headers of
     *         that name, return an empty <code>Iterator</code>
     */
    Iterator<String> getHeaders(String name);

    

Returns an Iterator of all the header names.

Returns:
an Iterator containing all of the names of
        headers provided with this file item. If the item does not have
        any headers return an empty Iterator/**
     * <p>
     * Returns an <code>Iterator</code> of all the header names.
     * </p>
     *
     * @return an <code>Iterator</code> containing all of the names of
     *         headers provided with this file item. If the item does not have
     *         any headers return an empty <code>Iterator</code>
     */
    Iterator<String> getHeaderNames();

}