# FileUpload.java

    /*
     * 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.commons.fileupload;

    /**
     * <p>High level API for processing file uploads.</p>
     *
     * <p>This class handles multiple files per single HTML widget, sent using
     * {@code multipart/mixed} encoding type, as specified by
     * <a href="http://www.ietf.org/rfc/rfc1867.txt">RFC 1867</a>.  Use {@link
     * #parseRequest(RequestContext)} to acquire a list
     * of {@link org.apache.commons.fileupload.FileItem FileItems} associated
     * with a given HTML widget.</p>
     *
     * <p>How the data for individual parts is stored is determined by the factory
     * used to create them; a given part may be in memory, on disk, or somewhere
     * else.</p>
     */
    public class FileUpload
        extends FileUploadBase {

        /**
         * The factory to use to create new form items.
         */
        private FileItemFactory fileItemFactory;

        /**
         * Constructs an uninitialized instance of this class.
         *
         * A factory must be
         * configured, using {@code setFileItemFactory()}, before attempting
         * to parse requests.
         *
         * @see #FileUpload(FileItemFactory)
         */
        public FileUpload() {
        }

        /**
         * Constructs an instance of this class which uses the supplied factory to
         * create {@code FileItem} instances.
         *
         * @see #FileUpload()
         * @param fileItemFactory The factory to use for creating file items.
         */
        public FileUpload(final FileItemFactory fileItemFactory) {
            this.fileItemFactory = fileItemFactory;
        }

        /**
         * Returns the factory class used when creating file items.
         *
         * @return The factory class for new file items.
         */
        @Override
        public FileItemFactory getFileItemFactory() {
            return fileItemFactory;
        }

        /**
         * Sets the factory class to use when creating file items.
         *
         * @param fileItemFactory The factory class for new file items.
         */
        @Override
        public void setFileItemFactory(final FileItemFactory fileItemFactory) {
            this.fileItemFactory = fileItemFactory;
        }

    }