org.apache.druid.data.input

Class Rows

java.lang.Object

org.apache.druid.data.input.Rows

public final class Rows
extends Object

Method Summary

Modifier and Type	Method and Description
static <T extends Number> Number	objectToNumber(String name, Object inputValue, boolean throwParseExceptions) 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

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

@Nullable
public static <T extends Number> Number objectToNumber(String name,
                                                                 Object inputValue,
                                                                 boolean throwParseExceptions)

Convert an object to a number. If NullHandling.replaceWithDefault() is true, this method will never return null. If false, it will return NullHandling.defaultLongValue() instead of null.

Parameters:

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

inputValue - the actual object being converted

throwParseExceptions - whether this method should throw a ParseException or use a default/null value when is not numeric

Returns:

a Number; will not necessarily be the same type as

Throws:

ParseException - if the input cannot be converted to a number and throwParseExceptions is true