org.apache.lucene.store

## Class ByteArrayDataInput

- java.lang.Object
- - org.apache.lucene.store.DataInput
  - - org.apache.lucene.store.ByteArrayDataInput

- All Implemented Interfaces:
    Cloneable

      public final class ByteArrayDataInput
      extends DataInput

  DataInput backed by a byte array. WARNING: This class omits all low-level checks.
  WARNING: This API is experimental and might change in incompatible ways in the next release.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `ByteArrayDataInput()`
    `ByteArrayDataInput(byte[] bytes)`
    `ByteArrayDataInput(byte[] bytes, int offset, int len)`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `boolean` | `eof()`
    `int` | `getPosition()`
    `int` | `length()`
    `byte` | `readByte()` Reads and returns a single byte.
    `void` | `readBytes(byte[] b, int offset, int len)` Reads a specified number of bytes into an array at the specified offset.
    `int` | `readInt()` Reads four bytes and returns an int.
    `long` | `readLong()` Reads eight bytes and returns a long.
    `short` | `readShort()` Reads two bytes and returns a short.
    `int` | `readVInt()` Reads an int stored in variable-length format.
    `long` | `readVLong()` Reads a long stored in variable-length format.
    `void` | `reset(byte[] bytes)`
    `void` | `reset(byte[] bytes, int offset, int len)`
    `void` | `rewind()`
    `void` | `setPosition(int pos)`
    `void` | `skipBytes(long count)` Skip over `numBytes` bytes.

    - ### Methods inherited from class org.apache.lucene.store.DataInput

      `clone, readBytes, readLELongs, readMapOfStrings, readSetOfStrings, readString, readZInt, readZLong`

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

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

- - ### Constructor Detail

    - #### ByteArrayDataInput

          public ByteArrayDataInput(byte[] bytes)

    - #### ByteArrayDataInput

          public ByteArrayDataInput(byte[] bytes,
                                    int offset,
                                    int len)

    - #### ByteArrayDataInput

          public ByteArrayDataInput()

  - ### Method Detail

    - #### reset

          public void reset(byte[] bytes)

    - #### rewind

          public void rewind()

    - #### getPosition

          public int getPosition()

    - #### setPosition

          public void setPosition(int pos)

    - #### reset

          public void reset(byte[] bytes,
                            int offset,
                            int len)

    - #### length

          public int length()

    - #### eof

          public boolean eof()

    - #### skipBytes

          public void skipBytes(long count)

      Description copied from class: `DataInput`
      Skip over `numBytes` bytes. The contract on this method is that it should have the same behavior as reading the same number of bytes into a buffer and discarding its content. Negative values of `numBytes` are not supported.
      Overrides:
        `skipBytes` in class `DataInput`

    - #### readShort

          public short readShort()

      Description copied from class: `DataInput`
      Reads two bytes and returns a short.
      Overrides:
        `readShort` in class `DataInput`
      See Also:
        `DataOutput.writeByte(byte)`

    - #### readInt

          public int readInt()

      Description copied from class: `DataInput`
      Reads four bytes and returns an int.
      Overrides:
        `readInt` in class `DataInput`
      See Also:
        `DataOutput.writeInt(int)`

    - #### readLong

          public long readLong()

      Description copied from class: `DataInput`
      Reads eight bytes and returns a long.
      Overrides:
        `readLong` in class `DataInput`
      See Also:
        `DataOutput.writeLong(long)`

    - #### readVInt

          public int readVInt()

      Description copied from class: `DataInput`
      Reads an int stored in variable-length format. Reads between one and five bytes. Smaller values take fewer bytes. Negative numbers are supported, but should be avoided.

      The format is described further in `DataOutput.writeVInt(int)`.

      Overrides:
        `readVInt` in class `DataInput`
      See Also:
        `DataOutput.writeVInt(int)`

    - #### readVLong

          public long readVLong()

      Description copied from class: `DataInput`
      Reads a long stored in variable-length format. Reads between one and nine bytes. Smaller values take fewer bytes. Negative numbers are not supported.

      The format is described further in `DataOutput.writeVInt(int)`.

      Overrides:
        `readVLong` in class `DataInput`
      See Also:
        `DataOutput.writeVLong(long)`

    - #### readByte

          public byte readByte()

      Description copied from class: `DataInput`
      Reads and returns a single byte.
      Specified by:
        `readByte` in class `DataInput`
      See Also:
        `DataOutput.writeByte(byte)`

    - #### readBytes

          public void readBytes(byte[] b,
                                int offset,
                                int len)

      Description copied from class: `DataInput`
      Reads a specified number of bytes into an array at the specified offset.
      Specified by:
        `readBytes` in class `DataInput`
      Parameters:
        `b` - the array to read bytes into
        `offset` - the offset in the array to start storing bytes
        `len` - the number of bytes to read
      See Also:
        `DataOutput.writeBytes(byte[],int)`

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