com.holonplatform.core

Interface ConverterExpression<T>

Type Parameters:

T - Expression type

All Superinterfaces:

Expression, TypedExpression<T>

All Known Subinterfaces:

BeanProperty<T>, BeanProperty.Builder<T>, BooleanBeanProperty, BooleanProperty, BooleanProperty.BooleanPropertyBuilder, CloneableProperty<T,P,B>, CloneableProperty.CloneablePathProperty<T,P>, CollectionConstantExpression<T>, CollectionPathProperty<E,C>, CollectionProperty<E,C>, CollectionProperty.ListProperty<T>, CollectionProperty.SetProperty<T>, ConstantConverterExpression<T,E>, ConstantExpression<T>, ListPathProperty<T>, ListPathProperty.ListPathPropertyBuilder<T>, ListVirtualProperty<T>, ListVirtualProperty.ListVirtualPropertyBuilder<T>, NullExpression<T>, NumericBeanProperty<N>, NumericProperty<N>, NumericProperty.NumericPropertyBuilder<N>, PathProperty<T>, PathProperty.PathPropertyBuilder<T>, Property<T>, PropertyBoxProperty, PropertyBoxProperty.PropertyBoxPropertyBuilder, QueryFunction.Avg, QueryFunction.Count, QueryFunction.Max<T>, QueryFunction.Min<T>, QueryFunction.PropertyQueryFunction<T,A>, QueryFunction.Sum<T>, SetPathProperty<T>, SetPathProperty.SetPathPropertyBuilder<T>, SetVirtualProperty<T>, SetVirtualProperty.SetVirtualPropertyBuilder<T>, StringBeanProperty, StringFunction, StringFunction.Lower, StringFunction.Upper, StringProperty, StringProperty.StringPropertyBuilder, TemporalBeanProperty<T>, TemporalFunction.Day, TemporalFunction.Hour, TemporalFunction.Month, TemporalFunction.Year, TemporalProperty<T>, TemporalProperty.TemporalPropertyBuilder<T>, VirtualProperty<T>, VirtualProperty.Builder<T,P,B>, VirtualProperty.VirtualPropertyBuilder<T>

All Known Implementing Classes:

AbstractConverterExpression, DefaultCollectionConstantExpression, DefaultConstantConverterExpression, DefaultNullExpression

public interface ConverterExpression<T>
extends TypedExpression<T>

A TypedExpression which supports an optional ExpressionValueConverter to perform expression type conversion.

Since:

5.1.0

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
Optional<ExpressionValueConverter<T,?>>	getExpressionValueConverter() Get the expression value type converter, if available.
default Class<?>	getModelType() Get the model expression type.
default Object	getModelValue(T value) Get the model data type value of given value, using the ExpressionValueConverter to convert the value, if available.

Methods inherited from interface com.holonplatform.core.TypedExpression

getTemporalType, getType, isCollectionExpression, isConverterExpression

Methods inherited from interface com.holonplatform.core.Expression

validate

Method Detail

getExpressionValueConverter

Optional<ExpressionValueConverter<T,?>> getExpressionValueConverter()

Get the expression value type converter, if available.

Returns:

Optional ExpressionValueConverter

getModelValue

default Object getModelValue(T value)

Get the model data type value of given value, using the ExpressionValueConverter to convert the value, if available. If an ExpressionValueConverter is not available, the provided value itself is returned.

Parameters:

value - The expression value

Returns:

The model-converted expression value if an ExpressionValueConverter is available, otherwise provided value itself is returned.

getModelType

default Class<?> getModelType()

Get the model expression type.

Returns:

The model expression type if an ExpressionValueConverter is available, otherwise returns the expression type