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## org.biojava.bio.seq.io
Class CrossProductTokenization

    java.lang.Object
      org.biojava.utils.Unchangeable
          org.biojava.bio.seq.io.WordTokenization
              org.biojava.bio.seq.io.CrossProductTokenization

All Implemented Interfaces:
  Serializable, Annotatable, SymbolTokenization, Changeable

    public class CrossProductTokenization

extends WordTokenization

Tokenization for cross-product alphabets. This class handles the general case of tokens of the form (foo bar baz), where each element is handled by a sub-tokenization. By default, these will be the "name" tokenizations of each of the sub-alphabets, but any tokenization can be used.

Since:
  1.2
Author:
  Thomas Down, Greg Cox
See Also:
  Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.biojava.bio.seq.io.SymbolTokenization
`SymbolTokenization.TokenType`

Nested classes/interfaces inherited from interface org.biojava.bio.Annotatable
`Annotatable.AnnotationForwarder`

Field Summary

Fields inherited from interface org.biojava.bio.seq.io.SymbolTokenization
`CHARACTER, FIXEDWIDTH, SEPARATED, UNKNOWN`

Fields inherited from interface org.biojava.bio.Annotatable
`ANNOTATION`

Constructor Summary
`CrossProductTokenization(Alphabet alpha)`
`CrossProductTokenization(Alphabet alpha, List tokenizers)`

Method Summary
`Symbol` | `parseToken(String token)` Returns the symbol for a single token.
`String` | `tokenizeSymbol(Symbol s)` Return a token representing a single symbol.

Methods inherited from class org.biojava.bio.seq.io.WordTokenization
`getAlphabet, getAnnotation, getTokenType, parseStream, parseString, splitString, tokenizeSymbolList`

Methods inherited from class org.biojava.utils.Unchangeable
`addChangeListener, addChangeListener, addForwarder, getForwarders, getListeners, isUnchanging, removeChangeListener, removeChangeListener, removeForwarder`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface org.biojava.utils.Changeable
`addChangeListener, addChangeListener, isUnchanging, removeChangeListener, removeChangeListener`

Constructor Detail

### CrossProductTokenization

    public CrossProductTokenization(Alphabet alpha)
                             throws BioException

Throws:
  `BioException`

### CrossProductTokenization

    public CrossProductTokenization(Alphabet alpha,
                                    List tokenizers)

Method Detail

### parseToken

    public Symbol parseToken(String token)
                      throws IllegalSymbolException

  Description copied from interface: `SymbolTokenization`
  Returns the symbol for a single token.

  The Symbol will be a member of the alphabet. If the token is not recognized as mapping to a symbol, an exception will be thrown.

  Parameters:
    `token` - the token to retrieve a Symbol for
  Returns:
    the Symbol for that token
  Throws:
    `IllegalSymbolException` - if there is no Symbol for the token

### tokenizeSymbol

    public String tokenizeSymbol(Symbol s)
                          throws IllegalSymbolException

  Description copied from interface: `SymbolTokenization`
  Return a token representing a single symbol.

  Parameters:
    `s` - The symbol
  Throws:
    `IllegalSymbolException` - if the symbol isn't recognized.

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