Module org.apache.arrow.vector

Package org.apache.arrow.vector.util

Class UuidUtility

java.lang.Object

org.apache.arrow.vector.util.UuidUtility

public class UuidUtility
extends Object

Utility class for UUID conversions and operations.

Provides methods to convert between UUID objects and byte representations used in Arrow vectors.

See Also:

• UuidVector
• UuidType

Constructor Summary

Constructors

Constructor	Description
UuidUtility()

Method Summary

Modifier and Type	Method	Description
static byte[]	getBytesFromUUID(UUID uuid)	Converts a UUID to a 16-byte array.
static UUID	uuidFromArrowBuf(ArrowBuf buffer, long index)	Constructs a UUID from bytes stored in an ArrowBuf at the specified index.

Methods inherited from class java.lang.Object

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

Constructor Details

UuidUtility

public UuidUtility()

Method Details

getBytesFromUUID

public static byte[] getBytesFromUUID(UUID uuid)

Converts a UUID to a 16-byte array.

The UUID is stored in big-endian byte order, with the most significant bits first.

Parameters:

uuid - the UUID to convert

Returns:

a 16-byte array representing the UUID

uuidFromArrowBuf

public static UUID uuidFromArrowBuf(ArrowBuf buffer,
 long index)

Constructs a UUID from bytes stored in an ArrowBuf at the specified index.

Reads 16 bytes from the buffer starting at the given index and interprets them as a UUID in big-endian byte order.

Parameters:

buffer - the buffer containing UUID data

index - the byte offset in the buffer where the UUID starts

Returns:

the UUID constructed from the buffer data