BlockDecoder (Lucene 9.0.0 codecs API)

```
public interface BlockDecoder
```
Decodes the raw bytes of a block when the index is read, according to the BlockEncoder used during the writing of the index.
For example, implementations may decompress or decrypt.

See Also:

BlockEncoder

WARNING: This API is experimental and might change in incompatible ways in the next release.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`BytesRef`	`decode(DataInput blockBytes, long length)`	Decodes all the bytes of one block in a single operation.

- Method Detail
  - decode
```
BytesRef decode(DataInput blockBytes,
                long length)
         throws IOException
```
    Decodes all the bytes of one block in a single operation. The decoding is per block.
    
    Parameters:
    
    blockBytes - The input block bytes to read.
    
    length - The number of bytes to read from the input.
    
    Returns:
    
    The decoded block bytes.
    
    Throws:
    
    IOException - If a decoding error occurs.