| /* Constructed.java -- Constructed type. |
| Copyright (C) 2006 Free Software Foundation, Inc. |
| |
| This file is a part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or (at |
| your option) any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 |
| USA |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.javax.net.ssl.provider; |
| |
| /** |
| * The base interface to SSL constructed types. |
| * |
| * <p><b>Contract for ByteBuffer-based constructed types:</b> |
| * |
| * <p>Most implementations of this interface supported by this library |
| * take a "view" of an underlying ByteBuffer. The general contract of |
| * such classes is that they <em>will not</em> modify the position or |
| * limit of the buffer when doing read operations. That is, the position |
| * of the underlying buffer <em>should</em> remain at 0 throughout the |
| * lifetime of the object, and the limit should be either set to the |
| * capacity of the buffer, or to the size of the object (in most cases, |
| * the length of the protocol object is determined by the contents of |
| * the object, so the limit isn't useful in such cases. Of course, if the |
| * limit is set to something other than the object's length, it must be |
| * larger than the object length). |
| * |
| * <p>Setter methods (usually in a class that implements the {@link Builder} |
| * interface) may modify the limit, but the general contract remains that |
| * the position remain at zero, and that the limit be at least as large as |
| * the object length. |
| * |
| * <p>Thus, very often the code will use <em>absolute</em> getters and setters |
| * for primitive types, or it will use the {@link java.nio.ByteBuffer#duplicate()} |
| * method, and sometimes the {@link java.nio.ByteBuffer#slice()} method, and |
| * will change the position or limit of the duplicate buffer. |
| */ |
| public interface Constructed |
| { |
| /** |
| * Returns the total length, in bytes, of this structure. |
| * |
| * @return The length of this structure. |
| */ |
| int length(); |
| |
| /** |
| * Returns a printable representation of this structure, with the |
| * given prefix prepended to each line. |
| * |
| * @param prefix The prefix to prepend to each line of the |
| * output. This value may be <code>null</code>. |
| * @return A printable representation of this structure. |
| */ |
| String toString(String prefix); |
| } |