001/* 002 * BioJava development code 003 * 004 * This code may be freely distributed and modified under the 005 * terms of the GNU Lesser General Public Licence. This should 006 * be distributed with the code. If you do not have a copy, 007 * see: 008 * 009 * http://www.gnu.org/copyleft/lesser.html 010 * 011 * Copyright for this code is held jointly by the individual 012 * authors. These should be listed in @author doc comments. 013 * 014 * For more information on the BioJava project and its aims, 015 * or to join the biojava-l mailing list, visit the home page 016 * at: 017 * 018 * http://www.biojava.org/ 019 * 020 */ 021 022package org.biojava.bio.program.tagvalue; 023 024 025/** 026 * <p> 027 * Interface for TagValueListeners that wrap other TagValueListeners 028 * </p> 029 * 030 * <p> 031 * Implementations will tend to intercept the tags or values as they stream 032 * through and modify them in some manner before forwarding them to the delegate 033 * listener. Using classes derived from SimpleTagValueWrapper, it is possible to build 034 * up complex chains of handlers that process and collate information as it 035 * streams through. 036 * </p> 037 * 038 * @author Matthew Pocock 039 * @author David Huen (conversion to interface) 040 * @since 1.2 041 */ 042public interface TagValueWrapper 043 extends 044 TagValueListener 045{ 046 /** 047 * get listener to which all calls will be delegated 048 */ 049 public TagValueListener getDelegate(); 050 051 /** 052 * set listener to which all calls will be delegated 053 */ 054 public void setDelegate(TagValueListener delegate); 055} 056