Package org.apache.derby.catalog
Interface UUID
- All Superinterfaces:
Externalizable
,Serializable
- 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.
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Field Summary
FieldsModifier and TypeFieldDescriptionstatic final String
NULL UUIDstatic final int
UUID_BYTE_LENGTH The number of bytes in the array toByteArray returns. -
Method Summary
Modifier and TypeMethodDescriptioncloneMe()
Clone this UUID.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
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Field Details
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NULL
NULL UUID- See Also:
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UUID_BYTE_LENGTH
static final int UUID_BYTE_LENGTHUUID_BYTE_LENGTH The number of bytes in the array toByteArray returns.- See Also:
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Method Details