Package org.hibernate.search.engine.search.projection.definition.spi

Class ConstantProjectionDefinition<T>

java.lang.Object

org.hibernate.search.engine.search.projection.definition.spi.AbstractProjectionDefinition<T>

org.hibernate.search.engine.search.projection.definition.spi.ConstantProjectionDefinition<T>

All Implemented Interfaces:

ProjectionDefinition<T>, ToStringTreeAppendable

@Incubating
public final class ConstantProjectionDefinition<T>
extends AbstractProjectionDefinition<T>

Method Summary

Modifier and Type	Method	Description
void	appendTo(ToStringTreeAppender appender)	Appends information about this to the given appender.
SearchProjection<T>	create(ProjectionDefinitionContext context)	Creates a projection with a specific projected type.
static <T> BeanHolder<ConstantProjectionDefinition<T>>	empty(ProjectionCollector.Provider<?,T> collector)
static <T> BeanHolder<ConstantProjectionDefinition<List<T>>>	emptyList()	Deprecated. Use empty(ProjectionCollector.Provider) instead.
static <T> BeanHolder<ConstantProjectionDefinition<T>>	nullValue()
protected String	type()

Methods inherited from class org.hibernate.search.engine.search.projection.definition.spi.AbstractProjectionDefinition

toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.hibernate.search.engine.search.projection.definition.ProjectionDefinition

create

Methods inherited from interface org.hibernate.search.util.common.spi.ToStringTreeAppendable

toStringTree

Method Details

nullValue

public static <T>
BeanHolder<ConstantProjectionDefinition<T>> nullValue()

emptyList

@Deprecated(since="8.0")
public static <T>
BeanHolder<ConstantProjectionDefinition<List<T>>> emptyList()

Deprecated.

Use empty(ProjectionCollector.Provider) instead.

empty

public static <T>
BeanHolder<ConstantProjectionDefinition<T>> empty(ProjectionCollector.Provider<?,T> collector)

type

protected String type()

Specified by:

type in class AbstractProjectionDefinition<T>

appendTo

public void appendTo(ToStringTreeAppender appender)

Description copied from interface: ToStringTreeAppendable

Appends information about this to the given appender.

WARNING: This generally shouldn't be called directly, as ToStringTreeAppender will automatically call this method for ToStringTreeAppendable values passed to ToStringTreeAppender.attribute(String, Object)/ToStringTreeAppender.value(Object).

Implementations should assume that calls to ToStringTreeAppender.startObject()/ToStringTreeAppender.endObject() for this are handled by the caller.

Specified by:

appendTo in interface ToStringTreeAppendable

Overrides:

appendTo in class AbstractProjectionDefinition<T>

Parameters:

appender - A ToStringTreeAppender.

create

public SearchProjection<T> create(ProjectionDefinitionContext context)

Description copied from interface: ProjectionDefinition

Creates a projection with a specific projected type.

Parameters:

context - The context in which the definition is applied.

Returns:

The created SearchPredicate.

See Also:

• SearchProjectionFactory
• ProjectionDefinitionContext