Package biz.chitec.quarterback.util.logic

Classes to build logical expressions in tree form.

See:
Description

Interface Summary

LogicExpr	Interface for logic expressions.
LogicExpr.Converter	Special interface for value conversion.
LogicExpr.UniverseGenerator	Special interface for universe generation.

Class Summary

AlgebraicExpr	Common superclass for AND, OR and further operations of Boolean algebra
ANDExpr	Interface for logic expressions
ArithmeticExpr	Base for logical expressions which work as arithmetic comparators Keeps helper classes and defines the overall workflow for the different arithmetic checks.
BetweenExpr	Logic expression checking whether a certain value of the universe is in the given collection of values.
BooleanCompareExpr	Compares a value to a given boolean value.
ConstantExpr	Interface for logic expressions
ContainsExpr	Interface for logic expressions
EqualsExpr	Tests for equality between the representation of the left argument in the universe and the constant in the right argument.
EvaluatorExpr	Convenience method small evaluating expressions which grounds everything without evaluate().
FilterExpr	Interface for logic expressions
GreaterThanExpr	Logical expression checking whether a certain value in the universe is less than a given number The value in the universe has to be of type Number, otherwise checks will always return false.
GreaterThanOrEqualsExpr	Logical expression checking whether a certain value in the universe is less than a given number The value in the universe has to be of type Number, otherwise checks will always return false.
InExpr	Logic expression checking whether a certain value of the universe is in the given collection of values.
IntCompareExpr	Compares a value to some of the given String values.
LessThanExpr	Logical expression checking whether a certain value in the universe is less than a given number The value in the universe has to be of type Number, otherwise checks will always return false.
LessThanOrEqualsExpr	Logical expression checking whether a certain value in the universe is less than a given number The value in the universe has to be of type Number, otherwise checks will always return false.
LikeExpr	Logic expression checking whether a certain value of the universe is string-wise like the given mask.
LogicExprUtilities	Helper methods for logic expressions.
NOTExpr	Interface for logic expressions
ORExpr	Interface for logic expressions
SmartCompareExpr	Compares a value to something else.
StringCompareExpr	Compares a value to some of the given String values.

Package biz.chitec.quarterback.util.logic Description

Classes to build logical expressions in tree form.

Package Specification

The classes in this package can be used to build up logical expressions which can be used lateron to reason about the truth of an expression. Each expression takes other expressions as parameters and can produce a logical evaluation of those ones.

Author:

chitec/Dirk Hillbrecht 2000-2002