com.codetaco.math

Class Equ<T>

java.lang.Object

com.codetaco.math.Equ<T>

public class Equ<T>
extends Object

Create an instance of this class and send it an evaluate() message. The result will always be an instance of Double or String or ZonedDateTime. You can also register your own functions and operators by calling the static methods registerFunction and registerOperator. These add to a static Map so there are then available for the duration of your application. A support instance can be handed to an instance of Equ with the setSupport() method. This must be done prior to calling evaluate. When a variable is found in the equation then the support instance is asked to instantiate the variable. It is expected that it will do what is necessary to come up with it. The test cases show a support instance that maintains a local Map of variable name / value pairs. But a database could be used as well.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Equ.Builder<B>

Method Summary

Modifier and Type	Method and Description
static <B> Equ.Builder<B>	builder(Class<B> returnType)
T	evaluate()
Double	getDouble(String variableName)
Integer	getInteger(String variableName)
Long	getLong(String variableName)
String	getString(String variableName)
ZonedDateTime	getZonedDateTime(String variableName)
String	showRPN()
String	toString()
void	variable(String variableName, Object value)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

builder

public static <B> Equ.Builder<B> builder(Class<B> returnType)

evaluate

public T evaluate()

variable

public void variable(String variableName,
                     Object value)

getString

public String getString(String variableName)

toString

public String toString()

Overrides:

toString in class Object

getLong

public Long getLong(String variableName)

getInteger

public Integer getInteger(String variableName)

getZonedDateTime

public ZonedDateTime getZonedDateTime(String variableName)

getDouble

public Double getDouble(String variableName)

showRPN

public String showRPN()