com.holonplatform.core.query

Interface QueryFunction<T>

Type Parameters:

T - Function result type

All Superinterfaces:

Expression

All Known Subinterfaces:

QueryFunction.Avg, QueryFunction.Count, QueryFunction.Max<T>, QueryFunction.Min<T>, QueryFunction.Sum<T>

public interface QueryFunction<T>
extends Expression

Represents a generic function to be used in a Query definition.

Since:

5.0.0

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	QueryFunction.Avg A function which represents the average value of a query result.
static interface	QueryFunction.Count A function which represents the count of a query result values.
static interface	QueryFunction.Max<T> A function which represents the largest value of a query result.
static interface	QueryFunction.Min<T> A function which represents the smallest value of a query result.
static interface	QueryFunction.Sum<T> A function which represents the sum of a query result values.

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>	getResultType() Get the function result type.

Methods inherited from interface com.holonplatform.core.Expression

validate

Method Detail

getResultType

Class<? extends T> getResultType()

Get the function result type.

Returns:

Function result type