1 // 2 // ======================================================================== 3 // Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd. 4 // ------------------------------------------------------------------------ 5 // All rights reserved. This program and the accompanying materials 6 // are made available under the terms of the Eclipse Public License v1.0 7 // and Apache License v2.0 which accompanies this distribution. 8 // 9 // The Eclipse Public License is available at 10 // http://www.eclipse.org/legal/epl-v10.html 11 // 12 // The Apache License v2.0 is available at 13 // http://www.opensource.org/licenses/apache2.0.php 14 // 15 // You may elect to redistribute this code under either of these licenses. 16 // ======================================================================== 17 // 18 19 package org.eclipse.jetty.client.api; 20 21 import java.nio.ByteBuffer; 22 23 import org.eclipse.jetty.client.util.ByteBufferContentProvider; 24 import org.eclipse.jetty.client.util.PathContentProvider; 25 26 /** 27 * {@link ContentProvider} provides a repeatable source of request content. 28 * <p /> 29 * Implementations should return a new "view" over the same content every time {@link #iterator()} is invoked. 30 * <p /> 31 * Applications should rely on utility classes such as {@link ByteBufferContentProvider} 32 * or {@link PathContentProvider}. 33 */ 34 public interface ContentProvider extends Iterable<ByteBuffer> 35 { 36 /** 37 * @return the content length, if known, or -1 if the content length is unknown 38 */ 39 long getLength(); 40 }