com.holonplatform.core.query

Interface BeanProjection<T>

Type Parameters:

T - Bean result type

All Superinterfaces:

Expression, QueryProjection<T>, TypedExpression<T>

public interface BeanProjection<T>
extends QueryProjection<T>

A QueryProjection which uses a BeanPropertySet to define the projection selection and returns BeanPropertySet.getBeanClass() type results.

Since:

5.0.0

Nested Class Summary

Nested classes/interfaces inherited from interface com.holonplatform.core.Expression

Expression.ExpressionResolverFunction<E extends Expression,R extends Expression>, Expression.InvalidExpressionException

Method Summary

Modifier and Type	Method and Description
Class<? extends T>	getBeanClass() Get the projection bean class.
Optional<Path[]>	getSelection() Get the optional projection selection bean Paths.
default Class<? extends T>	getType() Get the expression type.
static <T> BeanProjection<T>	of(Class<? extends T> beanClass, Path... selection) Create a BeanProjection using given bean class.

Methods inherited from interface com.holonplatform.core.query.QueryProjection

bean, constant, countAll, path, propertySet, propertySet

Methods inherited from interface com.holonplatform.core.TypedExpression

getTemporalType, isCollectionExpression, isConverterExpression

Methods inherited from interface com.holonplatform.core.Expression

validate

Method Detail

getBeanClass

Class<? extends T> getBeanClass()

Get the projection bean class.

Returns:

Projection bean class (not null)

getSelection

Optional<Path[]> getSelection()

Get the optional projection selection bean Paths. If not provided, all valid bean property paths will be used as selection.

Returns:

Optional projection selection paths

getType

default Class<? extends T> getType()

Description copied from interface: TypedExpression

Get the expression type.

Specified by:

getType in interface TypedExpression<T>

Returns:

Expression type

of

static <T> BeanProjection<T> of(Class<? extends T> beanClass,
                                Path... selection)

Create a BeanProjection using given bean class.

Type Parameters:

T - Bean and result type

Parameters:

beanClass - Bean class (not null)

selection - Optional selection paths. If not provided, all valid bean property paths will be used.

Returns:

BeanProjection using given bean class