org.apache.drill.exec.store

Enum ColumnExplorer.ImplicitInternalFileColumns

java.lang.Object

java.lang.Enum<ColumnExplorer.ImplicitInternalFileColumns>

org.apache.drill.exec.store.ColumnExplorer.ImplicitInternalFileColumns

All Implemented Interfaces:

Serializable, Comparable<ColumnExplorer.ImplicitInternalFileColumns>, ColumnExplorer.ImplicitFileColumn

Enclosing class:

ColumnExplorer

public static enum ColumnExplorer.ImplicitInternalFileColumns
extends Enum<ColumnExplorer.ImplicitInternalFileColumns>
implements ColumnExplorer.ImplicitFileColumn

Columns that give internal information about file or its parts. Columns are implicit, so should be called explicitly in query.

Enum Constant Summary

Enum Constants

Enum Constant and Description
LAST_MODIFIED_TIME
PROJECT_METADATA
ROW_GROUP_INDEX
ROW_GROUP_LENGTH
ROW_GROUP_START
USE_METADATA

Method Summary

Modifier and Type	Method and Description
String	optionName() Returns option name for obtaining implicit column name.
static ColumnExplorer.ImplicitInternalFileColumns	valueOf(String name) Returns the enum constant of this type with the specified name.
static ColumnExplorer.ImplicitInternalFileColumns[]	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

Methods inherited from interface org.apache.drill.exec.store.ColumnExplorer.ImplicitFileColumn

isOptional

Enum Constant Detail

LAST_MODIFIED_TIME

public static final ColumnExplorer.ImplicitInternalFileColumns LAST_MODIFIED_TIME

ROW_GROUP_INDEX

public static final ColumnExplorer.ImplicitInternalFileColumns ROW_GROUP_INDEX

ROW_GROUP_START

public static final ColumnExplorer.ImplicitInternalFileColumns ROW_GROUP_START

ROW_GROUP_LENGTH

public static final ColumnExplorer.ImplicitInternalFileColumns ROW_GROUP_LENGTH

USE_METADATA

public static final ColumnExplorer.ImplicitInternalFileColumns USE_METADATA

PROJECT_METADATA

public static final ColumnExplorer.ImplicitInternalFileColumns PROJECT_METADATA

Method Detail

values

public static ColumnExplorer.ImplicitInternalFileColumns[] 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 (ColumnExplorer.ImplicitInternalFileColumns c : ColumnExplorer.ImplicitInternalFileColumns.values())
    System.out.println(c);

Returns:

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

valueOf

public static ColumnExplorer.ImplicitInternalFileColumns 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

optionName

public String optionName()

Description copied from interface: ColumnExplorer.ImplicitFileColumn

Returns option name for obtaining implicit column name.

Specified by:

optionName in interface ColumnExplorer.ImplicitFileColumn

Returns:

option name for obtaining implicit column name.