com.facebook.presto.spi.block

Interface BlockBuilder

All Superinterfaces:

Block

All Known Implementing Classes:

ArrayBlockBuilder, ArrayElementBlockWriter, FixedWidthBlockBuilder, InterleavedBlockBuilder, VariableWidthBlockBuilder

public interface BlockBuilder
extends Block

Method Summary

Modifier and Type	Method and Description
BlockBuilder	appendNull() Appends a null value to the block.
default BlockBuilder	beginBlockEntry() Return a writer to the current entry.
Block	build() Builds the block.
BlockBuilder	closeEntry() Write a byte to the current entry;
BlockBuilder	writeByte(int value) Write a byte to the current entry;
BlockBuilder	writeBytes(io.airlift.slice.Slice source, int sourceIndex, int length) Write a byte sequences to the current entry;
BlockBuilder	writeDouble(double value) Write a double to the current entry;
BlockBuilder	writeFloat(float v) Write a float to the current entry;
BlockBuilder	writeInt(int value) Write a int to the current entry;
BlockBuilder	writeLong(long value) Write a long to the current entry;
default BlockBuilder	writeObject(Object value) Write an object to the current entry;
BlockBuilder	writeShort(int value) Write a short to the current entry;

Methods inherited from interface com.facebook.presto.spi.block.Block

assureLoaded, bytesCompare, bytesEqual, compareTo, copyPositions, copyRegion, equals, getByte, getDouble, getEncoding, getFloat, getInt, getLength, getLong, getObject, getPositionCount, getRegion, getRetainedSizeInBytes, getShort, getSingleValueBlock, getSizeInBytes, getSlice, hash, isNull, writeBytesTo, writePositionTo

Method Detail

writeByte

BlockBuilder writeByte(int value)

Write a byte to the current entry;

writeShort

BlockBuilder writeShort(int value)

Write a short to the current entry;

writeInt

BlockBuilder writeInt(int value)

Write a int to the current entry;

writeLong

BlockBuilder writeLong(long value)

Write a long to the current entry;

writeFloat

BlockBuilder writeFloat(float v)

Write a float to the current entry;

writeDouble

BlockBuilder writeDouble(double value)

Write a double to the current entry;

writeBytes

BlockBuilder writeBytes(io.airlift.slice.Slice source,
                        int sourceIndex,
                        int length)

Write a byte sequences to the current entry;

writeObject

default BlockBuilder writeObject(Object value)

Write an object to the current entry;

beginBlockEntry

default BlockBuilder beginBlockEntry()

Return a writer to the current entry. The caller can operate on the returned caller to incrementally build the object. This is generally more efficient than building the object elsewhere and call writeObject afterwards because a large chunk of memory could potentially be unnecessarily copied in this process.

closeEntry

BlockBuilder closeEntry()

Write a byte to the current entry;

appendNull

BlockBuilder appendNull()

Appends a null value to the block.

build

Block build()

Builds the block. This method can be called multiple times.