package lia.analysis.codec;import org.apache.lucene.analysis.TokenFilter;import org.apache.lucene.analysis.Token;import org.apache.lucene.analysis.TokenStream;import org.apache.commons.codec.language.Metaphone;import org.apache.commons.codec.EncoderException;import org.apache.commons.codec.StringEncoder;import java.io.IOException;public class MetaphoneReplacementFilter extends TokenFilter {  public static final String METAPHONE = "METAPHONE";  private StringEncoder metaphoner = new Metaphone();  public MetaphoneReplacementFilter(TokenStream input) {    super(input);  }  public Token next() throws IOException {    // pull next token from stream    Token t = input.next();    if (t == null) return null;   // all done    try {      return new Token(metaphoner.encode(t.termText()),                       t.startOffset(),                       t.endOffset(),                       METAPHONE);    } catch (EncoderException e) {      // if cannot encode, simply return original token      return t;    }  }}