org.apache.lucene.util.packed

## Class PackedLongValues

- java.lang.Object
- - org.apache.lucene.util.LongValues
  - - org.apache.lucene.util.packed.PackedLongValues

- All Implemented Interfaces:
    Accountable

      public class PackedLongValues
      extends LongValues
      implements Accountable

  Utility class to compress integers into a `LongValues` instance.

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class and Description
    --- | ---
    `static class` | `PackedLongValues.Builder` A Builder for a `PackedLongValues` instance.
    `class` | `PackedLongValues.Iterator` An iterator over long values.

  - ### Field Summary

    - ### Fields inherited from class org.apache.lucene.util.LongValues

      `IDENTITY, ZEROES`

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `static PackedLongValues.Builder` | `deltaPackedBuilder(float acceptableOverheadRatio)`
    `static PackedLongValues.Builder` | `deltaPackedBuilder(int pageSize, float acceptableOverheadRatio)` Return a new `PackedLongValues.Builder` that will compress efficiently integers that are close to each other.
    `long` | `get(long index)` Get value at `index`.
    `PackedLongValues.Iterator` | `iterator()` Return an iterator over the values of this array.
    `static PackedLongValues.Builder` | `monotonicBuilder(float acceptableOverheadRatio)`
    `static PackedLongValues.Builder` | `monotonicBuilder(int pageSize, float acceptableOverheadRatio)` Return a new `PackedLongValues.Builder` that will compress efficiently integers that would be a monotonic function of their index.
    `static PackedLongValues.Builder` | `packedBuilder(float acceptableOverheadRatio)`
    `static PackedLongValues.Builder` | `packedBuilder(int pageSize, float acceptableOverheadRatio)` Return a new `PackedLongValues.Builder` that will compress efficiently positive integers.
    `long` | `ramBytesUsed()` Return the memory usage of this object in bytes.
    `long` | `size()` Get the number of values in this array.

    - ### 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`

- - ### Method Detail

    - #### packedBuilder

          public static PackedLongValues.Builder packedBuilder(int pageSize,
                                                               float acceptableOverheadRatio)

      Return a new `PackedLongValues.Builder` that will compress efficiently positive integers.

    - #### packedBuilder

          public static PackedLongValues.Builder packedBuilder(float acceptableOverheadRatio)

      See Also:
        `packedBuilder(int, float)`

    - #### deltaPackedBuilder

          public static PackedLongValues.Builder deltaPackedBuilder(int pageSize,
                                                                    float acceptableOverheadRatio)

      Return a new `PackedLongValues.Builder` that will compress efficiently integers that are close to each other.

    - #### deltaPackedBuilder

          public static PackedLongValues.Builder deltaPackedBuilder(float acceptableOverheadRatio)

      See Also:
        `deltaPackedBuilder(int, float)`

    - #### monotonicBuilder

          public static PackedLongValues.Builder monotonicBuilder(int pageSize,
                                                                  float acceptableOverheadRatio)

      Return a new `PackedLongValues.Builder` that will compress efficiently integers that would be a monotonic function of their index.

    - #### monotonicBuilder

          public static PackedLongValues.Builder monotonicBuilder(float acceptableOverheadRatio)

      See Also:
        `monotonicBuilder(int, float)`

    - #### size

          public final long size()

      Get the number of values in this array.

    - #### get

          public final long get(long index)

      Description copied from class: `LongValues`
      Get value at `index`.
      Specified by:
        `get` in class `LongValues`

    - #### ramBytesUsed

          public long ramBytesUsed()

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

    - #### iterator

          public PackedLongValues.Iterator iterator()

      Return an iterator over the values of this array.

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