AbstractSerializablePairLongObjectDeltaEncodedStagedSerde (druid-processing 30.0.1 API)

java.lang.Object
- org.apache.druid.query.aggregation.AbstractSerializablePairLongObjectDeltaEncodedStagedSerde<T>

All Implemented Interfaces:

StagedSerde<T>

Direct Known Subclasses:

SerializablePairLongDoubleDeltaEncodedStagedSerde, SerializablePairLongFloatDeltaEncodedStagedSerde, SerializablePairLongLongDeltaEncodedStagedSerde, SerializablePairLongStringDeltaEncodedStagedSerde
```
public abstract class AbstractSerializablePairLongObjectDeltaEncodedStagedSerde<T extends SerializablePair<Long,?>>
extends Object
implements StagedSerde<T>
```
serializes a Long/Object(Number) pair in the context of a column/segment. Uses the minValue to perform delta encoding/decoding and if the range of the segment fits in an integer (useIntegerDelta), the format is Integer:Byte:Integer otherwise Long:Integer:bytes

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`StorableBuffer`	`serializeDelayed(T value)`	Useful method when some computation is necessary to prepare for serialization without actually writing out all the bytes in order to determine the serialized 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.druid.segment.serde.cell.StagedSerde
deserialize, deserialize, serialize

- Method Detail
  - serializeDelayed
```
public StorableBuffer serializeDelayed(@Nullable
                                       T value)
```
    Description copied from interface: StagedSerde
    
    Useful method when some computation is necessary to prepare for serialization without actually writing out all the bytes in order to determine the serialized size. It allows encapsulation of the size computation and the final logical to actually store into a ByteBuffer. It also allows for callers to pack multiple serialized objects into a single ByteBuffer without extra copies of a byte[]/ByteBuffer by using the StorableBuffer instance returned
    
    Specified by:
    
    serializeDelayed in interface StagedSerde<T extends SerializablePair<Long,?>>
    
    Parameters:
    
    value - - object to serialize
    
    Returns:
    
    an object that reports its serialized size and how to serialize the object to a ByteBuffer