io.druid.data.input

Class Rows

java.lang.Object

io.druid.data.input.Rows

public class Rows
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static Long	LONG_ZERO

Constructor Summary

Constructors

Constructor and Description
Rows()

Method Summary

Modifier and Type	Method and Description
static Number	objectToNumber(String name, Object inputValue) Convert an object to a number.
static List<String>	objectToStrings(Object inputValue) Convert an object to a list of strings.
static List<Object>	toGroupKey(long timeStamp, InputRow inputRow)

Methods inherited from class java.lang.Object

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

Field Detail

LONG_ZERO

public static final Long LONG_ZERO

Constructor Detail

Rows

public Rows()

Method Detail

toGroupKey

public static List<Object> toGroupKey(long timeStamp,
                                      InputRow inputRow)

Parameters:

timeStamp - rollup up timestamp to be used to create group key

inputRow - input row

Returns:

groupKey for the given input row

objectToStrings

public static List<String> objectToStrings(Object inputValue)

Convert an object to a list of strings.

objectToNumber

public static Number objectToNumber(String name,
                                    Object inputValue)

Convert an object to a number. Nulls are treated as zeroes.

Parameters:

name - field name of the object being converted (may be used for exception messages)

inputValue - the actual object being converted

Returns:

a number

Throws:

NullPointerException - if the string is null

ParseException - if the column cannot be converted to a number