data
Class NumberValue

java.lang.Object
  data.NumberValue

All Implemented Interfaces:

Cloneable, Comparable, Serializable, Value

Direct Known Subclasses:

DoubleValue, IntegerValue

public abstract class NumberValue

extends Object

implements Value

Values that operate on numbers.

All the operations are implemented as you would expect, the implementation is given in concrete subclasses.

Since:

v2.0

Author:

Steffen Zschaler

See Also:

Serialized Form

Constructor Summary

NumberValue(Number nbValue)
Create a new NumberValue.

Method Summary

abstract Object	clone() Clone this value.
Number	getValue() Get the actual value of the object.
boolean	isAddZero() Check whether this is the zero element with respect to addition.
boolean	isGreaterZero()
boolean	isLessZero()
boolean	isMulOne() Check whether this is the one element with respect to multiplication.
boolean	isMulZero() Check whether this is the zero element with respect to multiplication.
void	setValue(Number nbValue) Set the actual value of the object.
String	toString() Return a String representation of the object.

Methods inherited from class java.lang.Object

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

Methods inherited from interface data.Value

add, addAccumulating, divide, divideAccumulating, multiply, multiply, multiply, multiply, multiply, multiplyAccumulating, multiplyAccumulating, multiplyAccumulating, multiplyAccumulating, multiplyAccumulating, subtract, subtractAccumulating

Methods inherited from interface java.lang.Comparable

compareTo

Constructor Detail

NumberValue

public NumberValue(Number nbValue)

Create a new NumberValue.

Parameters:

nbValue - the actual initial value.

Method Detail

setValue

public void setValue(Number nbValue)

Set the actual value of the object.

Parameters:

nbValue - the new actual value.

Override:

Sometimes Override if you want to impose restrictions on the class of the actual value.

getValue

public Number getValue()

Get the actual value of the object.

Override:

Never

isAddZero

public boolean isAddZero()

Description copied from interface: Value

Check whether this is the zero element with respect to addition.

Specified by:

isAddZero in interface Value

Returns:

true if this is the zero element with respect to addition, i.e. if for any value v: (v.getClass() == this.getClass()) -> ((v.add (this).equals (v)) && (this.add (v).equals (v))).

Override:

Sometimes The default implementation returns

 (getValue().longValue() == 0)
 

isGreaterZero

public boolean isGreaterZero()

Override:

Sometimes The default implementation returns

 (getValue().longValue() > 0)
 

isLessZero

public boolean isLessZero()

Override:

Sometimes The default implementation returns

 (getValue().longValue() <= 0)
 

isMulZero

public boolean isMulZero()

Description copied from interface: Value

Check whether this is the zero element with respect to multiplication.

Specified by:

isMulZero in interface Value

Returns:

true if this is the zero element with respect to multiplication, i.e. if for any value v: (v.getClass() == this.getClass()) -> ((v.multiply (this).equals (this)) && (this.multiply (v).equals (this))).

Override:

Sometimes The default implementation returns

 isAddZero()
 

isMulOne

public boolean isMulOne()

Description copied from interface: Value

Check whether this is the one element with respect to multiplication.

Specified by:

isMulOne in interface Value

Returns:

true if this is the one element with respect to multiplication, i.e. if for any value v: (v.getClass() == this.getClass()) -> ((v.multiply (this).equals (v)) && (this.multiply (v).equals (v))).

Override:

Sometimes The default implementation returns

 (getValue().longValue() == 1)
 

clone

public abstract Object clone()

Description copied from interface: Value

Clone this value.

Specified by:

clone in interface Value

Override:

Always

toString

public String toString()

Return a String representation of the object.

Override:

Sometimes The default implementation returns

 getValue().toString()