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 024import org.biojava.utils.ParserException; 025 026/** 027 * <p> 028 * Rename tags using a TagMapper. 029 * </p> 030 * 031 * <p> 032 * This will rename tags as they stream into this listener using a TagMapper. 033 * Once renamed, the events will be forwarded onto a delegate TagValueListener 034 * for further processing. 035 * </p> 036 * 037 * @author Matthew Pocock 038 * @since 1.2 039 */ 040public class TagRenamer extends SimpleTagValueWrapper { 041 private PropertyChanger mapper; 042 043 /** 044 * Build a new TagRenamer with a delegate and mapper. 045 * 046 * @param delegate TagValueListener to pass mapped events onto 047 * @param mapper TagMapper used to rename tags 048 */ 049 public TagRenamer(TagValueListener delegate, PropertyChanger mapper) { 050 super(delegate); 051 this.mapper = mapper; 052 } 053 054 /** 055 * Retrieve the mapper used to rename tags 056 * 057 * @return the current mapper 058 */ 059 public PropertyChanger getMapper() { 060 return mapper; 061 } 062 063 public void startTag(Object tag) 064 throws ParserException { 065 Object newTag = mapper.getNewTag(tag); 066 if(newTag != null) { 067 tag = newTag; 068 } 069 070 super.startTag(tag); 071 } 072} 073