Package io.trino.parquet

Enum ParquetEncoding

java.lang.Object

java.lang.Enum<ParquetEncoding>

io.trino.parquet.ParquetEncoding

All Implemented Interfaces:

Serializable, Comparable<ParquetEncoding>

public enum ParquetEncoding
extends Enum<ParquetEncoding>

Enum Constant Summary

Enum Constants

Enum Constant	Description
BIT_PACKED
DELTA_BINARY_PACKED
DELTA_BYTE_ARRAY
DELTA_LENGTH_BYTE_ARRAY
PLAIN
PLAIN_DICTIONARY
RLE
RLE_DICTIONARY

Method Summary

Modifier and Type	Method	Description
org.apache.parquet.column.values.ValuesReader	getDictionaryBasedValuesReader(org.apache.parquet.column.ColumnDescriptor descriptor, ValuesType valuesType, Dictionary dictionary)
org.apache.parquet.column.values.ValuesReader	getValuesReader(org.apache.parquet.column.ColumnDescriptor descriptor, ValuesType valuesType)
Dictionary	initDictionary(org.apache.parquet.column.ColumnDescriptor descriptor, DictionaryPage dictionaryPage)
boolean	usesDictionary()
static ParquetEncoding	valueOf(String name)	Returns the enum constant of this type with the specified name.
static ParquetEncoding[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

PLAIN

public static final ParquetEncoding PLAIN

RLE

public static final ParquetEncoding RLE

BIT_PACKED

public static final ParquetEncoding BIT_PACKED

PLAIN_DICTIONARY

public static final ParquetEncoding PLAIN_DICTIONARY

DELTA_BINARY_PACKED

public static final ParquetEncoding DELTA_BINARY_PACKED

DELTA_LENGTH_BYTE_ARRAY

public static final ParquetEncoding DELTA_LENGTH_BYTE_ARRAY

DELTA_BYTE_ARRAY

public static final ParquetEncoding DELTA_BYTE_ARRAY

RLE_DICTIONARY

public static final ParquetEncoding RLE_DICTIONARY

Method Detail

values

public static ParquetEncoding[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (ParquetEncoding c : ParquetEncoding.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static ParquetEncoding valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

usesDictionary

public boolean usesDictionary()

initDictionary

public Dictionary initDictionary(org.apache.parquet.column.ColumnDescriptor descriptor,
                                 DictionaryPage dictionaryPage)
                          throws IOException

Throws:

IOException

getValuesReader

public org.apache.parquet.column.values.ValuesReader getValuesReader(org.apache.parquet.column.ColumnDescriptor descriptor,
                                                                     ValuesType valuesType)

getDictionaryBasedValuesReader

public org.apache.parquet.column.values.ValuesReader getDictionaryBasedValuesReader(org.apache.parquet.column.ColumnDescriptor descriptor,
                                                                                    ValuesType valuesType,
                                                                                    Dictionary dictionary)