parquet.format

Enum DataPageHeaderV2._Fields

java.lang.Object

java.lang.Enum<DataPageHeaderV2._Fields>

parquet.format.DataPageHeaderV2._Fields

All Implemented Interfaces:

Serializable, Comparable<DataPageHeaderV2._Fields>, org.apache.thrift.TFieldIdEnum

Enclosing class:

DataPageHeaderV2

public static enum DataPageHeaderV2._Fields
extends Enum<DataPageHeaderV2._Fields>
implements org.apache.thrift.TFieldIdEnum

The set of fields this struct contains, along with convenience methods for finding and manipulating them.

Enum Constant Summary

Enum Constants

Enum Constant and Description
DEFINITION_LEVELS_BYTE_LENGTH length of the repetition levels
ENCODING Encoding used for data in this page *
IS_COMPRESSED whether the values are compressed.
NUM_NULLS Number of NULL values, in this data page.
NUM_ROWS Number of rows in this data page.
NUM_VALUES Number of values, including NULLs, in this data page.
REPETITION_LEVELS_BYTE_LENGTH length of the definition levels
STATISTICS optional statistics for this column chunk

Method Summary

Methods

Modifier and Type	Method and Description
static DataPageHeaderV2._Fields	findByName(String name) Find the _Fields constant that matches name, or null if its not found.
static DataPageHeaderV2._Fields	findByThriftId(int fieldId) Find the _Fields constant that matches fieldId, or null if its not found.
static DataPageHeaderV2._Fields	findByThriftIdOrThrow(int fieldId) Find the _Fields constant that matches fieldId, throwing an exception if it is not found.
String	getFieldName()
short	getThriftFieldId()
static DataPageHeaderV2._Fields	valueOf(String name) Returns the enum constant of this type with the specified name.
static DataPageHeaderV2._Fields[]	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

NUM_VALUES

public static final DataPageHeaderV2._Fields NUM_VALUES

Number of values, including NULLs, in this data page. *

NUM_NULLS

public static final DataPageHeaderV2._Fields NUM_NULLS

Number of NULL values, in this data page. Number of non-null = num_values - num_nulls which is also the number of values in the data section *

NUM_ROWS

public static final DataPageHeaderV2._Fields NUM_ROWS

Number of rows in this data page. which means pages change on record boundaries (r = 0) *

ENCODING

public static final DataPageHeaderV2._Fields ENCODING

Encoding used for data in this page *

See Also:

Encoding

DEFINITION_LEVELS_BYTE_LENGTH

public static final DataPageHeaderV2._Fields DEFINITION_LEVELS_BYTE_LENGTH

length of the repetition levels

REPETITION_LEVELS_BYTE_LENGTH

public static final DataPageHeaderV2._Fields REPETITION_LEVELS_BYTE_LENGTH

length of the definition levels

IS_COMPRESSED

public static final DataPageHeaderV2._Fields IS_COMPRESSED

whether the values are compressed. Which means the section of the page between definition_levels_byte_length + repetition_levels_byte_length + 1 and compressed_page_size (included) is compressed with the compression_codec. If missing it is considered compressed

STATISTICS

public static final DataPageHeaderV2._Fields STATISTICS

optional statistics for this column chunk

Method Detail

values

public static DataPageHeaderV2._Fields[] 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 (DataPageHeaderV2._Fields c : DataPageHeaderV2._Fields.values())
    System.out.println(c);

Returns:

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

valueOf

public static DataPageHeaderV2._Fields 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

findByThriftId

public static DataPageHeaderV2._Fields findByThriftId(int fieldId)

Find the _Fields constant that matches fieldId, or null if its not found.

findByThriftIdOrThrow

public static DataPageHeaderV2._Fields findByThriftIdOrThrow(int fieldId)

Find the _Fields constant that matches fieldId, throwing an exception if it is not found.

findByName

public static DataPageHeaderV2._Fields findByName(String name)

Find the _Fields constant that matches name, or null if its not found.

getThriftFieldId

public short getThriftFieldId()

Specified by:

getThriftFieldId in interface org.apache.thrift.TFieldIdEnum

getFieldName

public String getFieldName()

Specified by:

getFieldName in interface org.apache.thrift.TFieldIdEnum