CompressionFactory.LongEncodingWriter (druid-processing 28.0.0 API)

All Known Implementing Classes:

DeltaLongEncodingWriter, LongsLongEncodingWriter, TableLongEncodingWriter

Enclosing class:

CompressionFactory
```
public static interface CompressionFactory.LongEncodingWriter
```
This writer output encoded values to the given ByteBuffer or OutputStream. setBuffer(ByteBuffer) or setOutputStream(WriteOutBytes) must be called before any value is written, and flush() must be called before calling setBuffer or setOutputStream again to set another output.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`flush()`	Flush the unwritten content to the current output.
`int`	`getBlockSize(int bytesPerBlock)`	Get the number of values that can be encoded into each block for the given block size in bytes
`int`	`getNumBytes(int values)`	Get the number of bytes required to encoding the given number of values
`int`	`metaSize()`
`void`	`putMeta(ByteBuffer metaOut, CompressionStrategy strategy)`	Output the header values of the associating encoding format to the given outputStream.
`void`	`setBuffer(ByteBuffer buffer)`	Data will be written starting from current position of the buffer, and the position of the buffer will be updated as content is written.
`void`	`setOutputStream(WriteOutBytes output)`
`void`	`write(long value)`

- Method Detail
  - setBuffer
```
void setBuffer(ByteBuffer buffer)
```
    Data will be written starting from current position of the buffer, and the position of the buffer will be updated as content is written.
  - setOutputStream
```
void setOutputStream(WriteOutBytes output)
```
  - write
```
void write(long value)
    throws IOException
```
    Throws:
    
    IOException
  - flush
```
void flush()
    throws IOException
```
    Flush the unwritten content to the current output.
    
    Throws:
    
    IOException
  - putMeta
```
void putMeta(ByteBuffer metaOut,
             CompressionStrategy strategy)
```
    Output the header values of the associating encoding format to the given outputStream. The header also include bytes for compression strategy and encoding format(optional) as described above in Compression Storage Format.
  - metaSize
```
int metaSize()
```
  - getBlockSize
```
int getBlockSize(int bytesPerBlock)
```
    Get the number of values that can be encoded into each block for the given block size in bytes
  - getNumBytes
```
int getNumBytes(int values)
```
    Get the number of bytes required to encoding the given number of values