org.apache.lucene.util.packed

## Class PackedInts.NullReader

- java.lang.Object
- - org.apache.lucene.index.LegacyNumericDocValues
  - - org.apache.lucene.util.packed.PackedInts.Reader
    - - org.apache.lucene.util.packed.PackedInts.NullReader

- All Implemented Interfaces:
    Accountable
  Enclosing class:
    PackedInts

      public static final class PackedInts.NullReader
      extends PackedInts.Reader

  A `PackedInts.Reader` which has all its values equal to 0 (bitsPerValue = 0).

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `NullReader(int valueCount)` Sole constructor.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `long` | `get(int index)` Returns the numeric value for the specified document ID.
    `int` | `get(int index, long[] arr, int off, int len)` Bulk get: read at least one and at most `len` longs starting from `index` into `arr[off:off+len]` and return the actual number of values that have been read.
    `long` | `ramBytesUsed()` Return the memory usage of this object in bytes.
    `int` | `size()`

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

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

    - ### Methods inherited from interface org.apache.lucene.util.Accountable

      `getChildResources`

- - ### Constructor Detail

    - #### NullReader

          public NullReader(int valueCount)

      Sole constructor.

  - ### Method Detail

    - #### get

          public long get(int index)

      Description copied from class: `LegacyNumericDocValues`
      Returns the numeric value for the specified document ID.
      Specified by:
        `get` in class `LegacyNumericDocValues`
      Parameters:
        `index` - document ID to lookup
      Returns:
        numeric value

    - #### get

          public int get(int index,
                         long[] arr,
                         int off,
                         int len)

      Description copied from class: `PackedInts.Reader`
      Bulk get: read at least one and at most `len` longs starting from `index` into `arr[off:off+len]` and return the actual number of values that have been read.
      Overrides:
        `get` in class `PackedInts.Reader`

    - #### size

          public int size()

      Specified by:
        `size` in class `PackedInts.Reader`
      Returns:
        the number of values.

    - #### ramBytesUsed

          public long ramBytesUsed()

      Description copied from interface: `Accountable`
      Return the memory usage of this object in bytes. Negative values are illegal.

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