Module com.speedment.runtime.compute

Package com.speedment.runtime.compute.expression

Expression builders that can produce efficient and type-safe implementations of the interfaces in the com.speedment.enterprise.aggregator.function package.

This package is part of the API.

Since:

3.1.0

Author:

Emil Forslund

Interface Summary

Interface	Description
BinaryExpression<T,FIRST extends Expression<T>,SECOND extends Expression<T>>	An Expression that has two operands, both are implementations of Expression.
BinaryObjExpression<T,FIRST extends Expression<T>,V>	An Expression that has two operands, one is another Expression and the other is a primitive int.
ComposedExpression<T,A>	Specialized Expression interface used when a ComposedExpression.firstStep() function is first applied to an incomming entity, before a ComposedExpression.secondStep() expression is applied to get the result.
ConstantExpression<T,V>	Specialized Expression that always returns the same value, regardless of the input.
Expression<T>	The base interface for all expressions.
JoiningExpression<T>	A special type of ToString expression that joins several strings together using optionally a separator, a prefix and a suffix.
MapperExpression<T,INNER extends Expression<T>,MAPPER>	Specialized expression that takes the result of an inner expression and applies a mapping function to it.
NonNullableExpression<T,INNER extends Expression<T>>	Specialized Expression that is not nullable, but that wraps an expression that is and that has some routine for dealing with null values determined by NonNullableExpression.nullStrategy().
NullableExpression<T,INNER extends Expression<T>>	Specific type of Expression that has an inner expression that is used for elements that does not pass the isNull predicate.
UnaryExpression<T,INNER extends Expression<T>>	An Expression that has a single operand that implements Expression.

Class Summary

Class	Description
Expressions	Common mathematical expressions often used on Speedment entities.

Enum Summary

Enum	Description
BinaryExpression.Operator	Operator types that could be returned by BinaryExpression.operator().
BinaryObjExpression.Operator	Operator types that could be returned by BinaryObjExpression.operator().
ExpressionType	Every expression type has a corresponding interface to get a type-safe way of applying the expression without boxing any values.
MapperExpression.MapperType	Enumeration of all possible mapping types.
NonNullableExpression.NullStrategy	The strategies possible when dealing with null-values.
UnaryExpression.Operator	The unary expression operator type.