## Uses of Class
org.apache.lucene.search.FieldComparator

- Packages that use FieldComparator
  Package | Description
  --- | ---
  org.apache.lucene.search | Code to search indices.
  org.apache.lucene.search.comparators | Comparators, used to compare hits so as to determine their sort order when collecting the top results with `TopFieldCollector`.

- - ### Uses of FieldComparator in org.apache.lucene.search

    Subclasses of FieldComparator in org.apache.lucene.search
    Modifier and Type | Class | Description
    --- | --- | ---
    `static class` | `FieldComparator.RelevanceComparator` | Sorts by descending relevance.
    `static class` | `FieldComparator.TermValComparator` | Sorts by field's natural Term sort order.
    `class` | `SimpleFieldComparator<T>` | Base `FieldComparator` implementation that is used for all contexts.

    Fields in org.apache.lucene.search declared as FieldComparator
    Modifier and Type | Field | Description
    --- | --- | ---
    `protected FieldComparator<?>[]` | FieldValueHitQueue.`comparators` |

    Methods in org.apache.lucene.search that return FieldComparator
    Modifier and Type | Method | Description
    --- | --- | ---
    `FieldComparator<?>` | SortedNumericSortField.`getComparator​(int numHits, Pruning pruning)` |
    `FieldComparator<?>` | SortedSetSortField.`getComparator​(int numHits, Pruning pruning)` |
    `FieldComparator<?>` | SortField.`getComparator​(int numHits, Pruning pruning)` | Returns the `FieldComparator` to use for sorting.
    `FieldComparator<?>[]` | FieldValueHitQueue.`getComparators()` |
    `abstract FieldComparator<?>` | FieldComparatorSource.`newComparator​(String fieldname, int numHits, Pruning pruning, boolean reversed)` | Creates a comparator for the field in the given index.

  - ### Uses of FieldComparator in org.apache.lucene.search.comparators

    Subclasses of FieldComparator in org.apache.lucene.search.comparators
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `DocComparator` | Comparator that sorts by asc _doc
    `class` | `DoubleComparator` | Comparator based on `Double.compare(double, double)` for `numHits`.
    `class` | `FloatComparator` | Comparator based on `Float.compare(float, float)` for `numHits`.
    `class` | `IntComparator` | Comparator based on `Integer.compare(int, int)` for `numHits`.
    `class` | `LongComparator` | Comparator based on `Long.compare(long, long)` for `numHits`.
    `class` | `NumericComparator<T extends Number>` | Abstract numeric comparator for comparing numeric values.
    `class` | `TermOrdValComparator` | Sorts by field's natural Term sort order, using ordinals.