cc.mallet.extract
Class StringTokenization

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractList<E>
          java.util.ArrayList<Token>
              cc.mallet.types.TokenSequence
                  cc.mallet.extract.StringTokenization

All Implemented Interfaces:

Tokenization, Sequence, java.io.Serializable, java.lang.Cloneable, java.lang.Iterable<Token>, java.util.Collection<Token>, java.util.List<Token>, java.util.RandomAccess

public class StringTokenization
extends TokenSequence
implements Tokenization

See Also:

Serialized Form

Field Summary

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

StringTokenization(java.lang.CharSequence seq)
Create an empty StringTokenization

StringTokenization(java.lang.CharSequence string, CharSequenceLexer lexer)
Creates a tokenization of the given string.

Method Summary

java.lang.Object	getDocument() Returns the document of which this is a tokenization.
Span	getSpan(int i)
Span	subspan(int firstToken, int lastToken) Returns a span formed by concatenating the spans from start to end.

Methods inherited from class cc.mallet.types.TokenSequence

add, addAll, getNumericProperty, getProperties, getProperty, hasProperty, removeLast, setNumericProperty, setProperty, toFeatureSequence, toFeatureVector, toString, toStringShort

Methods inherited from class java.util.ArrayList

add, add, addAll, addAll, clear, clone, contains, ensureCapacity, get, indexOf, isEmpty, lastIndexOf, remove, remove, removeRange, set, size, toArray, toArray, trimToSize

Methods inherited from class java.util.AbstractList

equals, hashCode, iterator, listIterator, listIterator, subList

Methods inherited from class java.util.AbstractCollection

containsAll, removeAll, retainAll

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface cc.mallet.types.Sequence

get, size

Methods inherited from interface java.util.List

containsAll, equals, hashCode, iterator, listIterator, listIterator, removeAll, retainAll, subList

Constructor Detail

StringTokenization

public StringTokenization(java.lang.CharSequence seq)

Create an empty StringTokenization

StringTokenization

public StringTokenization(java.lang.CharSequence string,
                          CharSequenceLexer lexer)

Creates a tokenization of the given string. Tokens are added from all the matches of the given lexer.

Method Detail

subspan

public Span subspan(int firstToken,
                    int lastToken)

Description copied from interface: Tokenization

Returns a span formed by concatenating the spans from start to end. In more detail:

• The start of the new span will be the start index of getSpan(start).
• The end of the new span will be the start index of getSpan(end).
• Unless start == end, the new span will completely include getSpan(start).
• The new span will never intersect getSpan(end)
• If start == end, then the new span contains no text.

Specified by:

subspan in interface Tokenization

Parameters:

firstToken - The index of the first token in the new span (inclusive). This is an index of a token, *not* an index into the document.

lastToken - The index of the first token in the new span (exclusive). This is an index of a token, *not* an index into the document.

Returns:

A span into this tokenization's document

getSpan

public Span getSpan(int i)

Specified by:

getSpan in interface Tokenization

getDocument

public java.lang.Object getDocument()

Description copied from interface: Tokenization

Returns the document of which this is a tokenization.

Specified by:

getDocument in interface Tokenization