at.jku.risc.stout.hoau.data

Class EquationSystem<T extends Equation>

java.lang.Object

at.jku.risc.stout.hoau.data.EquationSystem<T>

All Implemented Interfaces:

Cloneable, Iterable<T>

public abstract class EquationSystem<T extends Equation>
extends Object
implements Cloneable, Iterable<T>

A system of Equations

Author:

Alexander Baumgartner

Field Summary

Fields

Modifier and Type	Field and Description
static String	EQ_PREFIX1 The output will look like "EQ_PREFIX1#i# EQ_PREFIX2" where #i# is the index of an equation.
static String	EQ_PREFIX2 If EQ_PREFIX2 is null then the output of the index will also be omitted.
static String	EQ_SEPARATOR The separator is used to separate the equations of this system.

Constructor Summary

Constructors

Constructor and Description
EquationSystem()

Method Summary

Methods

Modifier and Type	Method and Description
void	add(T equation) Adds a new equation to this system.
void	clear() Removes all the equations of this system.
EquationSystem<T>	clone()
T	getFirst() Retrieves the first element of this system of equations or returns null if it is empty.
T	getLast() Retrieves the last element of this system of equations or returns null if it is empty.
boolean	isEmpty() Tests whether the system of equations is empty.
Iterator<T>	iterator()
abstract T	newEquation() You have to implement this method, so that an algorithm is able to instantiate new Equations of arbitrary types.
T	newEquation(TermNode left, TermNode right) Instantiates an equation of the specified type and initializes it with the given TermNodes.
T	popFirst() Retrieves and removes the first element of this system of equations or returns null if it is empty.
T	popLast() Retrieves and removes the last element of this system of equations or returns null if it is empty.
int	size() Returns the number of equations in this system.
String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

EQ_PREFIX1

public static String EQ_PREFIX1

The output will look like "EQ_PREFIX1#i# EQ_PREFIX2" where #i# is the index of an equation.

EQ_PREFIX2

public static String EQ_PREFIX2

If EQ_PREFIX2 is null then the output of the index will also be omitted.

EQ_SEPARATOR

public static String EQ_SEPARATOR

The separator is used to separate the equations of this system.

Constructor Detail

EquationSystem

public EquationSystem()

Method Detail

add

public void add(T equation)

Adds a new equation to this system.

clear

public void clear()

Removes all the equations of this system.

clone

public EquationSystem<T> clone()

Overrides:

clone in class Object

getFirst

public T getFirst()

Retrieves the first element of this system of equations or returns null if it is empty.

getLast

public T getLast()

Retrieves the last element of this system of equations or returns null if it is empty.

isEmpty

public boolean isEmpty()

Tests whether the system of equations is empty.

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Iterable<T extends Equation>

newEquation

public abstract T newEquation()

You have to implement this method, so that an algorithm is able to instantiate new Equations of arbitrary types.

newEquation

public T newEquation(TermNode left,
            TermNode right)

Instantiates an equation of the specified type and initializes it with the given TermNodes.

popFirst

public T popFirst()

Retrieves and removes the first element of this system of equations or returns null if it is empty.

popLast

public T popLast()

Retrieves and removes the last element of this system of equations or returns null if it is empty.

size

public int size()

Returns the number of equations in this system.

toString

public String toString()

Overrides:

toString in class Object