/*
 * Copyright 2001-2005 The Apache Software Foundation
 *
 * Licensed 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 net.myvietnam.mvncore.web.fileupload;

import java.io.InputStream;
import java.io.IOException;

/**
 * <p>Abstracts access to the request information needed for file uploads. This
 * interfsace should be implemented for each type of request that may be
 * handled by FileUpload, such as servlets and portlets.</p>
 *
 * @author <a href="mailto:martinc@apache.org">Martin Cooper</a>
 *
 * @since FileUpload 1.1
 *
 * @version $Id: RequestContext.java,v 1.2 2006/02/12 04:43:11 minhnn Exp $
 */
public interface RequestContext {

    /**
     * Retrieve the character encoding for the request.
     *
     * @return The character encoding for the request.
     */
    String getCharacterEncoding();

    /**
     * Retrieve the content type of the request.
     *
     * @return The content type of the request.
     */
    String getContentType();

    /**
     * Retrieve the content length of the request.
     *
     * @return The content length of the request.
     */
    int getContentLength();

    /**
     * Retrieve the input stream for the request.
     *
     * @return The input stream for the request.
     *
     * @throws IOException if a problem occurs.
     */
    InputStream getInputStream() throws IOException;
}