Package org.apache.parquet.format

Enum ColumnOrder._Fields

java.lang.Object

java.lang.Enum<ColumnOrder._Fields>

org.apache.parquet.format.ColumnOrder._Fields

All Implemented Interfaces:

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

Enclosing class:

ColumnOrder

public static enum ColumnOrder._Fields
extends Enum<ColumnOrder._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

Description

TYPE__ORDER

The sort orders for logical types are: UTF8 - unsigned byte-wise comparison INT8 - signed comparison INT16 - signed comparison INT32 - signed comparison INT64 - signed comparison UINT8 - unsigned comparison UINT16 - unsigned comparison UINT32 - unsigned comparison UINT64 - unsigned comparison DECIMAL - signed comparison of the represented value DATE - signed comparison TIME_MILLIS - signed comparison TIME_MICROS - signed comparison TIMESTAMP_MILLIS - signed comparison TIMESTAMP_MICROS - signed comparison INTERVAL - unsigned comparison JSON - unsigned byte-wise comparison BSON - unsigned byte-wise comparison ENUM - unsigned byte-wise comparison LIST - undefined MAP - undefined In the absence of logical types, the sort order is determined by the physical type: BOOLEAN - false, true INT32 - signed comparison INT64 - signed comparison INT96 (only used for legacy timestamps) - undefined FLOAT - signed comparison of the represented value (*) DOUBLE - signed comparison of the represented value (*) BYTE_ARRAY - unsigned byte-wise comparison FIXED_LEN_BYTE_ARRAY - unsigned byte-wise comparison (*) Because the sorting order is not specified properly for floating point values (relations vs.

Method Summary

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

TYPE__ORDER

public static final ColumnOrder._Fields TYPE__ORDER

The sort orders for logical types are: UTF8 - unsigned byte-wise comparison INT8 - signed comparison INT16 - signed comparison INT32 - signed comparison INT64 - signed comparison UINT8 - unsigned comparison UINT16 - unsigned comparison UINT32 - unsigned comparison UINT64 - unsigned comparison DECIMAL - signed comparison of the represented value DATE - signed comparison TIME_MILLIS - signed comparison TIME_MICROS - signed comparison TIMESTAMP_MILLIS - signed comparison TIMESTAMP_MICROS - signed comparison INTERVAL - unsigned comparison JSON - unsigned byte-wise comparison BSON - unsigned byte-wise comparison ENUM - unsigned byte-wise comparison LIST - undefined MAP - undefined In the absence of logical types, the sort order is determined by the physical type: BOOLEAN - false, true INT32 - signed comparison INT64 - signed comparison INT96 (only used for legacy timestamps) - undefined FLOAT - signed comparison of the represented value (*) DOUBLE - signed comparison of the represented value (*) BYTE_ARRAY - unsigned byte-wise comparison FIXED_LEN_BYTE_ARRAY - unsigned byte-wise comparison (*) Because the sorting order is not specified properly for floating point values (relations vs. total ordering) the following compatibility rules should be applied when reading statistics: - If the min is a NaN, it should be ignored. - If the max is a NaN, it should be ignored. - If the min is +0, the row group may contain -0 values as well. - If the max is -0, the row group may contain +0 values as well. - When looking for NaN values, min and max should be ignored.

Method Detail

values

public static ColumnOrder._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 (ColumnOrder._Fields c : ColumnOrder._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 ColumnOrder._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 ColumnOrder._Fields findByThriftId(int fieldId)

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

findByThriftIdOrThrow

public static ColumnOrder._Fields findByThriftIdOrThrow(int fieldId)

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

findByName

public static ColumnOrder._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