org.apache.lucene.search.suggest.document

## Class CompletionScorer

- java.lang.Object
- - org.apache.lucene.search.BulkScorer
  - - org.apache.lucene.search.suggest.document.CompletionScorer

-     public class CompletionScorer
      extends BulkScorer

  Expert: Responsible for executing the query against an appropriate suggester and collecting the results via a collector. `score(LeafCollector, Bits, int, int)` is called for each leaf reader. `accept(int,Bits)` and `score(float, float)` is called for every matched completion (i.e. document)
  WARNING: This API is experimental and might change in incompatible ways in the next release.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected CompletionWeight` | `weight` weight that created this scorer

  - ### Constructor Summary

    Constructors
    Modifier | Constructor and Description
    --- | ---
    `protected` | `CompletionScorer(CompletionWeight weight, NRTSuggester suggester, LeafReader reader, Bits filterDocs, boolean filtered, Automaton automaton)` Creates a scorer for a field-specific `suggester` scoped by `acceptDocs`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `boolean` | `accept(int docID, Bits liveDocs)` Returns true if a document with `docID` is accepted, false if the docID maps to a deleted document or has been filtered out
    `long` | `cost()`
    `float` | `score(float weight, float boost)` Returns the score for a matched completion based on the query time boost and the index time weight.
    `int` | `score(LeafCollector collector, Bits acceptDocs, int min, int max)`

    - ### Methods inherited from class org.apache.lucene.search.BulkScorer

      `score`

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

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

- - ### Field Detail

    - #### weight

          protected final CompletionWeight weight

      weight that created this scorer

  - ### Constructor Detail

    - #### CompletionScorer

          protected CompletionScorer(CompletionWeight weight,
                                     NRTSuggester suggester,
                                     LeafReader reader,
                                     Bits filterDocs,
                                     boolean filtered,
                                     Automaton automaton)
                              throws IOException

      Creates a scorer for a field-specific `suggester` scoped by `acceptDocs`
      Throws:
        `IOException`

  - ### Method Detail

    - #### score

          public int score(LeafCollector collector,
                           Bits acceptDocs,
                           int min,
                           int max)
                    throws IOException

      Specified by:
        `score` in class `BulkScorer`
      Throws:
        `IOException`

    - #### cost

          public long cost()

      Specified by:
        `cost` in class `BulkScorer`

    - #### accept

          public final boolean accept(int docID,
                                      Bits liveDocs)

      Returns true if a document with `docID` is accepted, false if the docID maps to a deleted document or has been filtered out
      Parameters:
        `liveDocs` - the `Bits` representing live docs, or possibly `null` if all docs are live

    - #### score

          public float score(float weight,
                             float boost)

      Returns the score for a matched completion based on the query time boost and the index time weight.

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