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(byte[] input)	Decodes Base64 encoded bytes.
static byte[]	base64Encode(byte[] input)	Encodes bytes using Base64.
static byte[]	bigDecimalToBytes(BigDecimal bigDecimal)	Converts BigDecimal to bytes.
static BigDecimal	bytesToBigDecimal(byte[] bytes)	Converts serialized BigDecimal bytes to value.
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(BigDecimal bigDecimal)

Converts BigDecimal to bytes. Only scale of upto 2 bytes is supported by the function

Parameters:

bigDecimal - big decimal number

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 BigDecimal bytesToBigDecimal(byte[] bytes)

Converts serialized BigDecimal bytes to value.

Parameters:

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

Returns:

big decimal number

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)

Encodes bytes using Base64.

Parameters:

input - original bytes

Returns:

base64 encoded bytes

base64Decode

public static byte[] base64Decode(byte[] input)

Decodes Base64 encoded bytes.

Parameters:

input - base64 encoded bytes

Returns:

decoded bytes