dw.value
Class Quantity
Object
dw.value.Quantity
Represents the quantity of an item.
Properties
available  :  boolean  (Read Only)
Identifies if the instance contains settings for value and unit.
decimalValue  :  Decimal  (Read Only)
The quantity as Decimal, null is returned when the quantity is not available.
unit  :  String  (Read Only)
The value for unit which identifies the unit of measure for the quantity. Examples of unit are 'inches' or 'pounds'.
value  :  Number  (Read Only)
The quantity value.
Constructor Summary
Quantity(value : Number, unit : String)
Creates a new quantity instance with the specified value and unit.
Method Summary
add(value : Quantity) : Quantity
Add Quantity object to the current object.
compareTo(other : Quantity) : Number
Compares two Quantity values.
divide(divisor : Number) : Quantity
Divide Quantity object by specified divisor.
equals(other : Object) : boolean
Compares two decimal values whether they are equivalent.
getDecimalValue() : Decimal
Returns the quantity as Decimal, null is returned when the quantity is not available.
getUnit() : String
Returns the value for unit which identifies the unit of measure for the quantity.
getValue() : Number
Returns the quantity value.
hashCode() : Number
Calculates the hash code for a decimal.
isAvailable() : boolean
Identifies if the instance contains settings for value and unit.
isOfSameUnit(value : Quantity) : boolean
Identifies if two Quantities have the same unit.
multiply(factor : Number) : Quantity
Multiply Quantity object by specified factor.
newQuantity(value : Decimal) : Quantity
Method returns a new instance of Quantity with the same unit but different value.
round(precision : Number) : Quantity
Rounds the Quantity value to the number of specified decimal digits.
subtract(value : Quantity) : Quantity
Subtract Quantity object from the current object.
toString() : String
Returns a string representation of this quantity object.
valueOf() : Object
According to the ECMA spec returns the "natural" primitive value.
Methods inherited from class Object
Constructor Detail
Quantity
public Quantity(value : Number, unit : String)
Creates a new quantity instance with the specified value and unit.
Parameters:
value - the actual quantity, must not be null
unit - the unit identifier for the quantity, must not be null

Method Detail
add
add(value : Quantity) : Quantity
Add Quantity object to the current object. Only objects representing the same unit can be added.
Parameters:
value - Quantity object
Returns:
Quantity object representing the sum of the operands

compareTo
compareTo(other : Quantity) : Number
Compares two Quantity values. An exception is thrown if the two Quantities values are of different unit. If one of the Quantity values represents the N/A value it is treated as 0.0.
Parameters:
other - the other quantity to compare.
Returns:
the comparison.

divide
divide(divisor : Number) : Quantity
Divide Quantity object by specified divisor.
Parameters:
divisor - divisor
Returns:
Quantity object representing division result

equals
equals(other : Object) : boolean
Compares two decimal values whether they are equivalent.
Parameters:
other - the object to compare against this quantity instance.
Returns:
true if equal, false otherwise.

getDecimalValue
getDecimalValue() : Decimal
Returns the quantity as Decimal, null is returned when the quantity is not available.
Returns:
the quantity as Decimal

getUnit
getUnit() : String
Returns the value for unit which identifies the unit of measure for the quantity. Examples of unit are 'inches' or 'pounds'.
Returns:
the unit value.

getValue
getValue() : Number
Returns the quantity value.
Returns:
the quantity value.
See Also:

hashCode
hashCode() : Number
Calculates the hash code for a decimal.
Returns:
the hash code.

isAvailable
isAvailable() : boolean
Identifies if the instance contains settings for value and unit.
Returns:
true if the instance is initialized with value and unit, false if the state is 'not available'.

isOfSameUnit
isOfSameUnit(value : Quantity) : boolean
Identifies if two Quantities have the same unit.
Parameters:
value - the second quantity for the comparison.
Returns:
true if both quantities have the same unit, false otherwise.

multiply
multiply(factor : Number) : Quantity
Multiply Quantity object by specified factor.
Parameters:
factor - multiplication factor
Returns:
Quantity object representing multiplication result

newQuantity
newQuantity(value : Decimal) : Quantity
Method returns a new instance of Quantity with the same unit but different value. An N/A instance is returned if value is null.
Parameters:
value - as a decimal
Returns:
new Quantity instance with same unit

round
round(precision : Number) : Quantity
Rounds the Quantity value to the number of specified decimal digits.
Parameters:
precision - number of decimal digits after the decimal point
Returns:
the new rounded Quantity value

subtract
subtract(value : Quantity) : Quantity
Subtract Quantity object from the current object. Only objects representing the same unit can be subtracted.
Parameters:
value - Quantity object to subtract
Returns:
Quantity object representing the result of subtraction

toString
toString() : String
Returns a string representation of this quantity object.
Returns:
a string representation of this quantity object.

valueOf
valueOf() : Object
According to the ECMA spec returns the "natural" primitive value. Here the value portion of the Quantity is returned.

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