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Package org.hibernate.dialect.unique

Support for org.hibernate.dialect.Dialect-specific unique constraint definition.

See Also: org.hibernate.dialect.unique.UniqueDelegate

Interface Summary

Modifier and Type	Interface and Description
public interface	UniqueDelegate Dialect-level delegate responsible for applying unique constraints in DDL.

Class Summary

Modifier and Type	Class and Description
public class	AlterTableUniqueDelegate A `UniqueDelegate` which uses `alter table` commands to create and drop the unique constraint.
public class	AlterTableUniqueIndexDelegate A `UniqueDelegate` which uses `create unique index` commands when necessary.
public class	CreateTableUniqueDelegate A `UniqueDelegate` which includes the unique constraint in the `create table` statement, except when called during schema migration.
public class	DefaultUniqueDelegate Deprecated since 6.2. use `org.hibernate.dialect.unique.AlterTableUniqueDelegate`
public class	SkipNullableUniqueDelegate A `UniqueDelegate` that only creates unique constraints on not-null columns, and ignores requests for uniqueness for nullable columns.