Package io.deephaven.parquet.table

Class ParquetInstructions.Builder

java.lang.Object

io.deephaven.parquet.table.ParquetInstructions.Builder

Enclosing class:

ParquetInstructions

public static class ParquetInstructions.Builder
extends Object

Constructor Summary

Constructors

Constructor	Description
Builder()
Builder(ParquetInstructions parquetInstructions)

Method Summary

Modifier and Type	Method	Description
ParquetInstructions.Builder	addColumnCodec(String columnName, String codecName)
ParquetInstructions.Builder	addColumnCodec(String columnName, String codecName, String codecArgs)
ParquetInstructions.Builder	addColumnNameMapping(String parquetColumnName, String columnName)
ParquetInstructions	build()
Set<String>	getTakenNames()
ParquetInstructions.Builder	setCompressionCodecName(String compressionCodecName)
ParquetInstructions.Builder	setIsLegacyParquet(boolean isLegacyParquet)
ParquetInstructions.Builder	setIsRefreshing(boolean isRefreshing)
ParquetInstructions.Builder	setMaximumDictionaryKeys(int maximumDictionaryKeys)	Set the maximum number of unique keys the writer should add to a dictionary page before switching to non-dictionary encoding; never evaluated for non-String columns, ignored if use dictionary is set for the column.
ParquetInstructions.Builder	setMaximumDictionarySize(int maximumDictionarySize)	Set the maximum number of bytes the writer should add to the dictionary before switching to non-dictionary encoding; never evaluated for non-String columns, ignored if use dictionary is set for the column.
ParquetInstructions.Builder	setSpecialInstructions(Object specialInstructions)
ParquetInstructions.Builder	setTargetPageSize(int targetPageSize)
ParquetInstructions.Builder	useDictionary(String columnName, boolean useDictionary)	Set a hint that the writer should use dictionary-based encoding for writing this column; never evaluated for non-String columns.

Methods inherited from class java.lang.Object

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

Constructor Details

Builder

public Builder()

Builder

public Builder(ParquetInstructions parquetInstructions)

Method Details

addColumnNameMapping

public ParquetInstructions.Builder addColumnNameMapping(String parquetColumnName,
 String columnName)

getTakenNames

public Set<String> getTakenNames()

addColumnCodec

public ParquetInstructions.Builder addColumnCodec(String columnName,
 String codecName)

addColumnCodec

public ParquetInstructions.Builder addColumnCodec(String columnName,
 String codecName,
 String codecArgs)

useDictionary

public ParquetInstructions.Builder useDictionary(String columnName,
 boolean useDictionary)

Set a hint that the writer should use dictionary-based encoding for writing this column; never evaluated for non-String columns.

Parameters:

columnName - The column name

useDictionary - The hint value

setCompressionCodecName

public ParquetInstructions.Builder setCompressionCodecName(String compressionCodecName)

setMaximumDictionaryKeys

public ParquetInstructions.Builder setMaximumDictionaryKeys(int maximumDictionaryKeys)

Set the maximum number of unique keys the writer should add to a dictionary page before switching to non-dictionary encoding; never evaluated for non-String columns, ignored if use dictionary is set for the column.

Parameters:

maximumDictionaryKeys - The maximum number of dictionary keys; must be >= 0

setMaximumDictionarySize

public ParquetInstructions.Builder setMaximumDictionarySize(int maximumDictionarySize)

Set the maximum number of bytes the writer should add to the dictionary before switching to non-dictionary encoding; never evaluated for non-String columns, ignored if use dictionary is set for the column.

Parameters:

maximumDictionarySize - The maximum size of dictionary (in bytes); must be >= 0

setIsLegacyParquet

public ParquetInstructions.Builder setIsLegacyParquet(boolean isLegacyParquet)

setTargetPageSize

public ParquetInstructions.Builder setTargetPageSize(int targetPageSize)

setIsRefreshing

public ParquetInstructions.Builder setIsRefreshing(boolean isRefreshing)

setSpecialInstructions

public ParquetInstructions.Builder setSpecialInstructions(Object specialInstructions)

build

public ParquetInstructions build()