Module storm.foundation

Package st.orm

Enum Class Polymorphic.Strategy

java.lang.Object

java.lang.Enum<Polymorphic.Strategy>

st.orm.Polymorphic.Strategy

All Implemented Interfaces:

Serializable, Comparable<Polymorphic.Strategy>, Constable

Enclosing class:

Polymorphic

public static enum Polymorphic.Strategy
extends Enum<Polymorphic.Strategy>

The inheritance strategies for sealed entity hierarchies.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
JOINED	A base table holds shared fields and each subtype has its own extension table with subtype-specific fields, linked by the primary key.
SINGLE_TABLE	All subtypes share a single database table with a discriminator column.

Method Summary

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

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

SINGLE_TABLE

public static final Polymorphic.Strategy SINGLE_TABLE

All subtypes share a single database table with a discriminator column. Subtype-specific columns are NULL for rows of other subtypes.

JOINED

public static final Polymorphic.Strategy JOINED

A base table holds shared fields and each subtype has its own extension table with subtype-specific fields, linked by the primary key. A Discriminator column in the base table is optional: when present, Storm reads the discriminator value directly; when absent, Storm resolves the concrete type at query time by generating an expression that checks which extension table has a matching row.

Method Details

values

public static Polymorphic.Strategy[] 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

valueOf

public static Polymorphic.Strategy valueOf(String name)

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 name

NullPointerException - if the argument is null