org.apache.lucene.util.graph

## Class GraphTokenStreamFiniteStrings

- java.lang.Object
- - org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings

-     public final class GraphTokenStreamFiniteStrings
      extends Object

  Consumes a TokenStream and creates an `Automaton` where the transition labels are terms from the `TermToBytesRefAttribute`. This class also provides helpers to explore the different paths of the `Automaton`.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `GraphTokenStreamFiniteStrings(TokenStream in)`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `int[]` | `articulationPoints()` Returns the articulation points (or cut vertices) of the graph: https://en.wikipedia.org/wiki/Biconnected_component
    `Iterator<TokenStream>` | `getFiniteStrings()` Get all finite strings from the automaton.
    `Iterator<TokenStream>` | `getFiniteStrings(int startState, int endState)` Get all finite strings that start at `startState` and end at `endState`.
    `List<AttributeSource>` | `getTerms(int state)` Returns the list of tokens that start at the provided state
    `Term[]` | `getTerms(String field, int state)` Returns the list of terms that start at the provided state
    `boolean` | `hasSidePath(int state)` Returns whether the provided state is the start of multiple side paths of different length (eg: new york, ny)

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### GraphTokenStreamFiniteStrings

          public GraphTokenStreamFiniteStrings(TokenStream in)
                                        throws IOException

      Throws:
        `IOException`

  - ### Method Detail

    - #### hasSidePath

          public boolean hasSidePath(int state)

      Returns whether the provided state is the start of multiple side paths of different length (eg: new york, ny)

    - #### getTerms

          public List<AttributeSource> getTerms(int state)

      Returns the list of tokens that start at the provided state

    - #### getTerms

          public Term[] getTerms(String field,
                                 int state)

      Returns the list of terms that start at the provided state

    - #### getFiniteStrings

          public Iterator<TokenStream> getFiniteStrings()
                                                 throws IOException

      Get all finite strings from the automaton.
      Throws:
        `IOException`

    - #### getFiniteStrings

          public Iterator<TokenStream> getFiniteStrings(int startState,
                                                        int endState)

      Get all finite strings that start at `startState` and end at `endState`.

    - #### articulationPoints

          public int[] articulationPoints()

      Returns the articulation points (or cut vertices) of the graph: https://en.wikipedia.org/wiki/Biconnected_component

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