MillimeterUnitSet.java example

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package org.jowidgets.unit.tools.units;

import org.jowidgets.unit.api.IUnit;
import org.jowidgets.unit.api.IUnitBuilder;
import org.jowidgets.unit.api.IUnitSet;
import org.jowidgets.unit.api.IUnitSetBuilder;
import org.jowidgets.unit.api.Unit;
import org.jowidgets.unit.api.UnitSet;

public final class MillimeterUnitSet {

    public static final IUnit MILLI_METER = mm();
    public static final IUnit CENTI_METER = cm();
    public static final IUnit METER = m();
    public static final IUnit KILO_METER = km();

    private static final IUnitSet INSTANCE = createInstance();

    private MillimeterUnitSet() {}

    private static IUnit mm() {
        final IUnitBuilder builder = Unit.builder();
        builder.abbreviation(Messages.getMessage("MillimeterBaseUnitSet.mm_abbreviation"));
        builder.name(Messages.getMessage("MillimeterBaseUnitSet.mm_name"));
        return builder.build();
    }

    private static IUnit cm() {
        final IUnitBuilder builder = Unit.builder();
        builder.abbreviation(Messages.getMessage("MillimeterBaseUnitSet.cm_abbreviation"));
        builder.name(Messages.getMessage("MillimeterBaseUnitSet.cm_name"));
        builder.conversionFactor(10);
        return builder.build();
    }

    private static IUnit m() {
        final IUnitBuilder builder = Unit.builder();
        builder.abbreviation(Messages.getMessage("MillimeterBaseUnitSet.m_abbreviation"));
        builder.name(Messages.getMessage("MillimeterBaseUnitSet.m_name"));
        builder.conversionFactor(1000);
        return builder.build();
    }

    private static IUnit km() {
        final IUnitBuilder builder = Unit.builder();
        builder.abbreviation(Messages.getMessage("MillimeterBaseUnitSet.km_abbreviation"));
        builder.name(Messages.getMessage("MillimeterBaseUnitSet.km_name"));
        builder.conversionFactor(1000000);
        return builder.build();
    }

    private static IUnitSet createInstance() {
        final IUnitSetBuilder builder = UnitSet.builder();
        builder.add(MILLI_METER);
        builder.add(CENTI_METER);
        builder.add(METER);
        builder.add(KILO_METER);
        return builder.build();
    }

    public static IUnitSet instance() {
        return INSTANCE;
    }

}