Package org.egothor.stemmer

Class MultiTrie2

java.lang.Object
org.egothor.stemmer.Trie
org.egothor.stemmer.MultiTrie
org.egothor.stemmer.MultiTrie2
public class MultiTrie2 extends MultiTrie
The MultiTrie is a Trie of Tries.

It stores words and their associated patch commands. The MultiTrie handles patch commands broken into their constituent parts, as a MultiTrie does, but the commands are delimited by the skip command.

  • Constructor Details

    • MultiTrie2

      public MultiTrie2(DataInput is) throws IOException
      Constructor for the MultiTrie object.
      Parameters:
      is - the input stream
      Throws:
      IOException - if an I/O error occurs

    • MultiTrie2

      public MultiTrie2(boolean forward)
      Constructor for the MultiTrie2 object
      Parameters:
      forward - set to true if the elements should be read left to right

  • Method Details

    • getFully

      public CharSequence getFully(CharSequence key)
      Return the element that is stored in a cell associated with the given key.
      Overrides:
      getFully in class MultiTrie
      Parameters:
      key - the key to the cell holding the desired element
      Returns:
      the element

    • getLastOnPath

      public CharSequence getLastOnPath(CharSequence key)
      Return the element that is stored as last on a path belonging to the given key.
      Overrides:
      getLastOnPath in class MultiTrie
      Parameters:
      key - the key associated with the desired element
      Returns:
      the element that is stored as last on a path

    • store

      public void store(DataOutput os) throws IOException
      Write this data structure to the given output stream.
      Overrides:
      store in class MultiTrie
      Parameters:
      os - the output stream
      Throws:
      IOException - if an I/O error occurs

    • add

      public void add(CharSequence key, CharSequence cmd)
      Add an element to this structure consisting of the given key and patch command.

      This method will return without executing if the cmd parameter's length is 0.

      Overrides:
      add in class MultiTrie
      Parameters:
      key - the key
      cmd - the patch command

    • decompose

      public CharSequence[] decompose(CharSequence cmd)
      Break the given patch command into its constituent pieces. The pieces are delimited by NOOP commands.
      Parameters:
      cmd - the patch command
      Returns:
      an array containing the pieces of the command

    • reduce

      public Trie reduce(Reduce by)
      Remove empty rows from the given Trie and return the newly reduced Trie.
      Overrides:
      reduce in class MultiTrie
      Parameters:
      by - the Trie to reduce
      Returns:
      the newly reduced Trie