org.apache.derby.catalog

Interface UUID

All Superinterfaces:

java.io.Externalizable, java.io.Serializable

All Known Implementing Classes:

BasicUUID

public interface UUID
extends java.io.Externalizable

An interface for accessing Derby UUIDs, unique identifiers.

The values in the system catalog held in ID columns with a type of CHAR(36) are the string representations of these UUIDs.

A UUID implements equals() and hashCode based on value equality.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	NULL NULL UUID
static int	UUID_BYTE_LENGTH UUID_BYTE_LENGTH The number of bytes in the array toByteArray returns.

Method Summary

Modifier and Type	Method and Description
UUID	cloneMe() Clone this UUID.
java.lang.String	toANSIidentifier() Produce a string representation of this UUID which is suitable for use as a unique ANSI identifier.

Methods inherited from interface java.io.Externalizable

readExternal, writeExternal

Field Detail

NULL

static final java.lang.String NULL

NULL UUID

See Also:

Constant Field Values

UUID_BYTE_LENGTH

static final int UUID_BYTE_LENGTH

UUID_BYTE_LENGTH The number of bytes in the array toByteArray returns.

See Also:

Constant Field Values

Method Detail

toANSIidentifier

java.lang.String toANSIidentifier()

Produce a string representation of this UUID which is suitable for use as a unique ANSI identifier.

cloneMe

UUID cloneMe()

Clone this UUID.

Returns:

a copy of this UUID