com.speedment.runtime.compute.expression

Interface MapperExpression<T,INNER extends Expression<T>,MAPPER>

Type Parameters:

T - the input entity type

INNER - the type of the inner expression

MAPPER - the functional interface used to map from the type returned by the inner expression and the resulting type of this expression

All Superinterfaces:

Expression<T>

public interface MapperExpression<T,INNER extends Expression<T>,MAPPER>
extends Expression<T>

Specialized expression that takes the result of an inner expression and applies a mapping function to it.

Equality is determined by looking at inner(), mapper() and mapperType().

Since:

3.1.0

Author:

Emil Forslund

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	MapperExpression.MapperType Enumeration of all possible mapping types.

Method Summary

Modifier and Type	Method and Description
INNER	inner() Returns the inner expression used in this.
MAPPER	mapper() Returns the mapping operation applied to the result from the inner operation.
MapperExpression.MapperType	mapperType() Returns the type of mapper that the mapper()-method returns an instance of.

Methods inherited from interface com.speedment.runtime.compute.expression.Expression

expressionType

Method Detail

inner

INNER inner()

Returns the inner expression used in this.

Returns:

the inner expression

mapper

MAPPER mapper()

Returns the mapping operation applied to the result from the inner operation.

Returns:

the mapping operation

mapperType

MapperExpression.MapperType mapperType()

Returns the type of mapper that the mapper()-method returns an instance of.

Returns:

the type of mapper