org.h2.engine

Enum Mode.UniqueIndexNullsHandling

java.lang.Object

java.lang.Enum<Mode.UniqueIndexNullsHandling>

org.h2.engine.Mode.UniqueIndexNullsHandling

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<Mode.UniqueIndexNullsHandling>

Enclosing class:

Mode

public static enum Mode.UniqueIndexNullsHandling
extends java.lang.Enum<Mode.UniqueIndexNullsHandling>

Determines how rows with NULL values in indexed columns are handled in unique indexes.

Enum Constant Summary

Enum Constants

Enum Constant and Description
ALLOW_DUPLICATES_WITH_ALL_NULLS Multiple rows with identical values in indexed columns with all indexed NULL values are allowed in unique index.
ALLOW_DUPLICATES_WITH_ANY_NULL Multiple rows with identical values in indexed columns with at least one indexed NULL value are allowed in unique index.
FORBID_ANY_DUPLICATES Multiple rows with identical values in indexed columns are not allowed in unique index.

Method Summary

Methods

Modifier and Type	Method and Description
static Mode.UniqueIndexNullsHandling	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static Mode.UniqueIndexNullsHandling[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

ALLOW_DUPLICATES_WITH_ANY_NULL

public static final Mode.UniqueIndexNullsHandling ALLOW_DUPLICATES_WITH_ANY_NULL

Multiple rows with identical values in indexed columns with at least one indexed NULL value are allowed in unique index.

ALLOW_DUPLICATES_WITH_ALL_NULLS

public static final Mode.UniqueIndexNullsHandling ALLOW_DUPLICATES_WITH_ALL_NULLS

Multiple rows with identical values in indexed columns with all indexed NULL values are allowed in unique index.

FORBID_ANY_DUPLICATES

public static final Mode.UniqueIndexNullsHandling FORBID_ANY_DUPLICATES

Multiple rows with identical values in indexed columns are not allowed in unique index.

Method Detail

values

public static Mode.UniqueIndexNullsHandling[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (Mode.UniqueIndexNullsHandling c : Mode.UniqueIndexNullsHandling.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static Mode.UniqueIndexNullsHandling valueOf(java.lang.String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (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:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null