com.holonplatform.core.query

Interface QueryFunction.NoArgQueryFunction<T>

Type Parameters:

T - Function result type

All Superinterfaces:

Expression, QueryExpression<T>, QueryFunction<T,Void>, QueryProjection<T>, TypedExpression<T>

Enclosing interface:

QueryFunction<T,A>

public static interface QueryFunction.NoArgQueryFunction<T>
extends QueryFunction<T,Void>

A QueryFunction which do not support any argument.

Nested Class Summary

Nested classes/interfaces inherited from interface com.holonplatform.core.query.QueryFunction

QueryFunction.Avg, QueryFunction.Count, QueryFunction.Max<T>, QueryFunction.Min<T>, QueryFunction.NoArgQueryFunction<T>, QueryFunction.PropertyQueryFunction<T,A>, QueryFunction.Sum<T extends Number>

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
default List<TypedExpression<? extends Void>>	getExpressionArguments() If the function supports expression arguments, returns the arguments list.

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

avg, count, currentDate, currentLocalDate, currentLocalDateTime, currentTimestamp, day, hour, lower, max, min, month, sum, upper, year

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

between, count, eq, eq, goe, goe, gt, gt, in, in, in, isNotNull, isNull, loe, loe, lt, lt, max, min, neq, neq, nin, nin, nin

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

bean, constant, countAll, path, propertySet, propertySet

Methods inherited from interface com.holonplatform.core.TypedExpression

getTemporalType, getType, isCollectionExpression, isConverterExpression

Methods inherited from interface com.holonplatform.core.Expression

validate

Method Detail

getExpressionArguments

default List<TypedExpression<? extends Void>> getExpressionArguments()

Description copied from interface: QueryFunction

If the function supports expression arguments, returns the arguments list.

Specified by:

getExpressionArguments in interface QueryFunction<T,Void>

Returns:

Function arguments, an empty list if none