Package org.apache.pinot.common.function.scalar

Class DataTypeConversionFunctions

java.lang.Object

org.apache.pinot.common.function.scalar.DataTypeConversionFunctions

public class DataTypeConversionFunctions
extends Object

Contains function to convert a datatype to another datatype.

Method Summary

Modifier and Type	Method	Description
static byte[]	base64Decode(String input)	decode base64 encoded string to bytes using Base64
static byte[]	base64Encode(byte[] input)	encode byte array to base64 using Base64
static byte[]	bigDecimalToBytes(String number)	Converts big decimal string representation to bytes.
static String	bytesToBigDecimal(byte[] bytes)	Converts bytes value representation generated by bigDecimalToBytes(String) back to string big decimal
static String	bytesToHex(byte[] bytes)	convert simple bytes array to hex string
static Object	cast(Object value, String targetTypeLiteral)
static byte[]	hexToBytes(String hex)	convert simple hex string to byte array

Methods inherited from class java.lang.Object

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

Method Detail

cast

public static Object cast(Object value,
                          String targetTypeLiteral)

bigDecimalToBytes

public static byte[] bigDecimalToBytes(String number)

Converts big decimal string representation to bytes. Only scale of upto 2 bytes is supported by the function

Parameters:

number - big decimal number in plain string. e.g. '1234.12121'

Returns:

The result byte array contains the bytes of the unscaled value appended to bytes of the scale in BIG ENDIAN order.

bytesToBigDecimal

public static String bytesToBigDecimal(byte[] bytes)

Converts bytes value representation generated by bigDecimalToBytes(String) back to string big decimal

Parameters:

bytes - array that contains the bytes of the unscaled value appended to 2 bytes of the scale in BIG ENDIAN order.

Returns:

plain string representation of big decimal

hexToBytes

public static byte[] hexToBytes(String hex)

convert simple hex string to byte array

Parameters:

hex - a plain hex string e.g. 'f0e1a3b2'

Returns:

byte array representation of hex string

bytesToHex

public static String bytesToHex(byte[] bytes)

convert simple bytes array to hex string

Parameters:

bytes - any byte array

Returns:

plain hex string e.g. 'f012be3c'

base64Encode

public static byte[] base64Encode(byte[] input)

encode byte array to base64 using Base64

Parameters:

input - original byte array

Returns:

base64 encoded byte array

base64Decode

public static byte[] base64Decode(String input)

decode base64 encoded string to bytes using Base64

Parameters:

input - base64 encoded string

Returns:

decoded byte array