tech.units.indriya

Class AbstractSystemOfUnits

java.lang.Object

tech.units.indriya.AbstractSystemOfUnits

All Implemented Interfaces:

javax.measure.spi.SystemOfUnits, tech.uom.lib.common.function.Nameable

Direct Known Subclasses:

Units

public abstract class AbstractSystemOfUnits
extends Object
implements javax.measure.spi.SystemOfUnits, tech.uom.lib.common.function.Nameable

An abstract base class for unit systems.

Since:

1.0

Version:

2.0, Feb 18, 2020

Author:

Werner Keil

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	AbstractSystemOfUnits.Helper

Field Summary

Fields

Modifier and Type	Field and Description
protected static double	E The natural logarithm.
protected static Logger	logger
protected Map<Class<? extends javax.measure.Quantity>,javax.measure.Unit>	quantityToUnit Holds the mapping quantity to unit.
protected Set<javax.measure.Unit<?>>	units Holds the units.

Constructor Summary

Constructors

Constructor and Description
AbstractSystemOfUnits()

Method Summary

Modifier and Type	Method and Description
abstract String	getName()
<Q extends javax.measure.Quantity<Q>> javax.measure.Unit<Q>	getUnit(Class<Q> quantityType)
javax.measure.Unit<?>	getUnit(String string)
javax.measure.Unit<?>	getUnit(String string, UnitStyle style) Returns a unit with the given string representation in a particular style or null if none is found in this unit system and requested style.
javax.measure.Unit<?>	getUnit(String string, UnitStyle style, boolean ignoreCase) Returns a unit with the given string representation in a particular style or null if none is found in this unit system and requested style.
Set<javax.measure.Unit<?>>	getUnits()
Set<? extends javax.measure.Unit<?>>	getUnits(javax.measure.Dimension dimension)

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected static final Logger logger

E

protected static final double E

The natural logarithm.

See Also:

Constant Field Values

units

protected final Set<javax.measure.Unit<?>> units

Holds the units.

quantityToUnit

protected final Map<Class<? extends javax.measure.Quantity>,javax.measure.Unit> quantityToUnit

Holds the mapping quantity to unit.

Constructor Detail

AbstractSystemOfUnits

public AbstractSystemOfUnits()

Method Detail

getName

public abstract String getName()

Specified by:

getName in interface javax.measure.spi.SystemOfUnits

Specified by:

getName in interface tech.uom.lib.common.function.Nameable

getUnits

public Set<javax.measure.Unit<?>> getUnits()

Specified by:

getUnits in interface javax.measure.spi.SystemOfUnits

getUnits

public Set<? extends javax.measure.Unit<?>> getUnits(javax.measure.Dimension dimension)

Specified by:

getUnits in interface javax.measure.spi.SystemOfUnits

getUnit

public <Q extends javax.measure.Quantity<Q>> javax.measure.Unit<Q> getUnit(Class<Q> quantityType)

Specified by:

getUnit in interface javax.measure.spi.SystemOfUnits

getUnit

public javax.measure.Unit<?> getUnit(String string)

Specified by:

getUnit in interface javax.measure.spi.SystemOfUnits

getUnit

public javax.measure.Unit<?> getUnit(String string,
                                     UnitStyle style,
                                     boolean ignoreCase)

Returns a unit with the given string representation in a particular style or null if none is found in this unit system and requested style.

NOTE: Use ignoreCase carefully, as it will find the FIRST unit for a particular string, e.g. the symbol of SECOND and SIEMENS would be the same without case, but the UPPERCASE letter sorted first.

Parameters:

string - the string representation of a unit, not null.

style - the style of unit representation.

ignoreCase - ignore the case or not?

Returns:

the unit with the given string representation.

Since:

2.0

getUnit

public javax.measure.Unit<?> getUnit(String string,
                                     UnitStyle style)

Returns a unit with the given string representation in a particular style or null if none is found in this unit system and requested style.

Parameters:

string - the string representation of a unit, not null.

style - the style of unit representation.

Returns:

the unit with the given string representation.

Since:

2.0