org.apache.derby.catalog: public interface: UUID

org.apache.derby.catalog
public interface: UUID [javadoc | source]

All Implemented Interfaces:
Externalizable

All Known Implementing Classes:
BasicUUID

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
static int UUID_BYTE_LENGTH UUID_BYTE_LENGTH The number of bytes in the array toByteArray returns.

Method from org.apache.derby.catalog.UUID Summary:
cloneMe, toANSIidentifier, toByteArray, toHexString
Method from org.apache.derby.catalog.UUID Detail:

public UUID cloneMe()
Clone this UUID.
public String toANSIidentifier()
Produce a string representation of this UUID which is suitable for use as a unique ANSI identifier.
public byte[] toByteArray()
Produce a byte array representation of this UUID which can be passed to UUIDFactory.recreateUUID later on to reconstruct it.
public String toHexString()
Create a hex string representation of this UUID.