org.springframework.data.projection

Enum EntityProjection.ProjectionType

java.lang.Object

java.lang.Enum<EntityProjection.ProjectionType>

org.springframework.data.projection.EntityProjection.ProjectionType

All Implemented Interfaces:

Serializable, Comparable<EntityProjection.ProjectionType>

Enclosing class:

EntityProjection<M,D>

public static enum EntityProjection.ProjectionType
extends Enum<EntityProjection.ProjectionType>

Projection type.

Since:

2.7

Enum Constant Summary

Enum Constants

Enum Constant and Description
CLOSED A closed projection only contains accessor methods that all match properties of the target aggregate.
DTO A DTO projection defines a value type that hold properties for the fields that are supposed to be retrieved.
OPEN An open projection has accessor methods in the interface that can be used to compute new values by using the Value annotation.

Method Summary

Modifier and Type	Method and Description
static EntityProjection.ProjectionType	from(ProjectionInformation information) Obtain the EntityProjection.ProjectionType from a given ProjectionInformation.
static EntityProjection.ProjectionType	valueOf(String name) Returns the enum constant of this type with the specified name.
static EntityProjection.ProjectionType[]	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

DTO

public static final EntityProjection.ProjectionType DTO

A DTO projection defines a value type that hold properties for the fields that are supposed to be retrieved.

OPEN

public static final EntityProjection.ProjectionType OPEN

An open projection has accessor methods in the interface that can be used to compute new values by using the Value annotation.

CLOSED

public static final EntityProjection.ProjectionType CLOSED

A closed projection only contains accessor methods that all match properties of the target aggregate.

Method Detail

values

public static EntityProjection.ProjectionType[] 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 (EntityProjection.ProjectionType c : EntityProjection.ProjectionType.values())
    System.out.println(c);

Returns:

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

valueOf

public static EntityProjection.ProjectionType valueOf(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:

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

NullPointerException - if the argument is null

from

public static EntityProjection.ProjectionType from(ProjectionInformation information)

Obtain the EntityProjection.ProjectionType from a given ProjectionInformation.

Parameters:

information - must not be null.

Returns:

the EntityProjection.ProjectionType according to type and ProjectionInformation.isClosed().