Module org.elasticsearch.server

Package org.elasticsearch.index.codec.tsdb.pipeline.numeric

Class NumericBlockDecoder

java.lang.Object

org.elasticsearch.index.codec.tsdb.pipeline.numeric.NumericBlockDecoder

public final class NumericBlockDecoder
extends Object

Per-field block decoder owning a mutable DecodingContext.

A single instance decodes all blocks for one field. The context holds per-block mutable state (stage bitmap, metadata buffer, data input reference) that is cleared via DecodingContext.clear() at the start of each block and reused for the next. This zero-allocation-per-block design avoids GC pressure on the decode hot path, but makes the instance NOT thread-safe: concurrent callers must each obtain their own instance via NumericDecoder.newBlockDecoder().

Method Summary

Modifier and Type	Method	Description
int	blockSize()	Returns the number of values per block.
void	decode(long[] values, int count, org.apache.lucene.store.DataInput in)	Decodes a block of values by reading the payload and reversing transforms.

Methods inherited from class java.lang.Object

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

Method Details

decode

public void decode(long[] values,
 int count,
 org.apache.lucene.store.DataInput in)
            throws IOException

Decodes a block of values by reading the payload and reversing transforms.

Parameters:

values - the output array to populate

count - the expected number of values

in - the data input to read from

Throws:

IOException - if an I/O error occurs

blockSize

public int blockSize()

Returns the number of values per block.

Returns:

the number of values per block