ucar.units
Class UnitSystemImpl

java.lang.Object
  ucar.units.UnitSystemImpl

All Implemented Interfaces:

Serializable, UnitSystem

Direct Known Subclasses:

SI

public class UnitSystemImpl
extends Object
implements UnitSystem, Serializable

Version:

$Id: UnitSystemImpl.java 64 2006-07-12 22:30:50Z edavis $

Author:

Steven R. Emmerson

See Also:

Serialized Form

Constructor Summary

protected

UnitSystemImpl(UnitDBImpl baseUnitDB, UnitDBImpl derivedUnitDB) Constructs from a base unit database and a derived unit database.

Method Summary

BaseUnit	getBaseUnit(BaseQuantity quantity) Returns the base unit corresponding to a base quantity.
UnitDB	getBaseUnitDB() Returns the base unit database.
UnitDB	getUnitDB() Returns the complete unit database.

Methods inherited from class java.lang.Object

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

Constructor Detail

UnitSystemImpl

protected UnitSystemImpl(UnitDBImpl baseUnitDB,
                         UnitDBImpl derivedUnitDB)
                  throws UnitExistsException

Constructs from a base unit database and a derived unit database.

Parameters:

baseUnitDB - The base unit database. Shall only contain base units.

derivedUnitDB - The derived unit database. Shall not contain any base units.

Throws:

UnitExistsException - A unit with the same identifier exists in both databases.

Method Detail

getBaseUnitDB

public final UnitDB getBaseUnitDB()

Returns the base unit database.

Specified by:

getBaseUnitDB in interface UnitSystem

Returns:

The base unit database.

getUnitDB

public final UnitDB getUnitDB()

Returns the complete unit database.

Specified by:

getUnitDB in interface UnitSystem

Returns:

The complete unit database (both base units and derived units).

getBaseUnit

public final BaseUnit getBaseUnit(BaseQuantity quantity)

Returns the base unit corresponding to a base quantity.

Specified by:

getBaseUnit in interface UnitSystem

Parameters:

quantity - The base quantity.

Returns:

The base unit corresponding to the base quantity in this system of units or null if no such unit exists.