Package org.h2.engine
Enum Class Mode.UniqueIndexNullsHandling
- All Implemented Interfaces:
Serializable
,Comparable<Mode.UniqueIndexNullsHandling>
,Constable
- Enclosing class:
- Mode
Determines how rows with
NULL
values in indexed columns are handled
in unique indexes.-
Nested Class Summary
Nested classes/interfaces inherited from class java.lang.Enum
Enum.EnumDesc<E extends Enum<E>>
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Enum Constant Summary
Enum ConstantsEnum ConstantDescriptionMultiple rows with identical values in indexed columns with all indexedNULL
values are allowed in unique index.Multiple rows with identical values in indexed columns with at least one indexedNULL
value are allowed in unique index.Multiple rows with identical values in indexed columns are not allowed in unique index. -
Method Summary
Modifier and TypeMethodDescriptionReturns the enum constant of this class with the specified name.static Mode.UniqueIndexNullsHandling[]
values()
Returns an array containing the constants of this enum class, in the order they are declared.
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Enum Constant Details
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ALLOW_DUPLICATES_WITH_ANY_NULL
Multiple rows with identical values in indexed columns with at least one indexedNULL
value are allowed in unique index. -
ALLOW_DUPLICATES_WITH_ALL_NULLS
Multiple rows with identical values in indexed columns with all indexedNULL
values are allowed in unique index. -
FORBID_ANY_DUPLICATES
Multiple rows with identical values in indexed columns are not allowed in unique index.
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Method Details
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values
Returns an array containing the constants of this enum class, in the order they are declared.- Returns:
- an array containing the constants of this enum class, in the order they are declared
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valueOf
Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)- Parameters:
name
- the name of the enum constant to be returned.- Returns:
- the enum constant with the specified name
- Throws:
IllegalArgumentException
- if this enum class has no constant with the specified nameNullPointerException
- if the argument is null
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