How to use

getBaseUnits

method

in

javax.measure.Unit

@Override
public Map<? extends Unit<?>, Integer> getBaseUnits() {
 return parentUnit.getBaseUnits();
}

@Override
public Map<? extends Unit<?>, Integer> getBaseUnits() {
 return lower.getBaseUnits();
}

@Override
public Map<? extends Unit<?>, Integer> getBaseUnits() {
 return parentUnit.getBaseUnits();
}

@Override
public Map<? extends Unit<?>, Integer> getBaseUnits() {
 return actualUnit.getBaseUnits();
}

/**
 * Returns the fundamental (base) dimensions and their exponent whose product is this dimension or <code>null</code> if this dimension is a
 * fundamental dimension.
 *
 * @return the mapping between the base dimensions and their exponent.
 * @since 1.0
 */
@SuppressWarnings("rawtypes")
public Map<? extends Dimension, Integer> getBaseDimensions() {
 Map<? extends Unit, Integer> pseudoUnits = pseudoUnit.getBaseUnits();
 if (pseudoUnits == null)
  return null;
 final Map<QuantityDimension, Integer> baseDimensions = new HashMap<>();
 for (Map.Entry<? extends Unit, Integer> entry : pseudoUnits.entrySet()) {
  baseDimensions.put(new QuantityDimension(entry.getKey()), entry.getValue());
 }
 return baseDimensions;
}

/**
 * Returns the fundamental (base) dimensions and their exponent whose product is this dimension or <code>null</code> if this dimension is a
 * fundamental dimension.
 *
 * @return the mapping between the base dimensions and their exponent.
 * @since 1.0
 */
@SuppressWarnings("rawtypes")
public Map<? extends Dimension, Integer> getBaseDimensions() {
 Map<? extends Unit, Integer> pseudoUnits = pseudoUnit.getBaseUnits();
 if (pseudoUnits == null)
  return null;
 final Map<QuantityDimension, Integer> baseDimensions = new HashMap<QuantityDimension, Integer>();
 for (Map.Entry<? extends Unit, Integer> entry : pseudoUnits.entrySet()) {
  baseDimensions.put(new QuantityDimension(entry.getKey()), entry.getValue());
 }
 return baseDimensions;
}

/**
 * Returns the fundamental (base) dimensions and their exponent whose product is this dimension or <code>null</code> if this dimension is a
 * fundamental dimension.
 *
 * @return the mapping between the base dimensions and their exponent.
 * @since 1.0
 */
@SuppressWarnings("rawtypes")
public Map<? extends Dimension, Integer> getBaseDimensions() {
 Map<? extends Unit, Integer> pseudoUnits = pseudoUnit.getBaseUnits();
 if (pseudoUnits == null)
  return null;
 final Map<QuantityDimension, Integer> baseDimensions = new HashMap<>();
 for (Map.Entry<? extends Unit, Integer> entry : pseudoUnits.entrySet()) {
  baseDimensions.put(new QuantityDimension(entry.getKey()), entry.getValue());
 }
 return baseDimensions;
}

@SuppressWarnings("unchecked")
private static int productPrecedenceInternal(Unit<?> unit, Appendable buffer, SymbolMap symbolMap) throws IOException {
 Map<Unit<?>, Integer> productUnits = (Map<Unit<?>, Integer>) unit.getBaseUnits();
 int negativeExponentCount = 0;

@SuppressWarnings("unchecked")
private static int productPrecedenceInternal(Unit<?> unit, Appendable buffer, SymbolMap symbolMap) throws IOException {
 Map<Unit<?>, Integer> productUnits = (Map<Unit<?>, Integer>) unit.getBaseUnits();
 int negativeExponentCount = 0;

/**
 * Tests {@link SystemUnit#getBaseUnits()}. This method indirectly tests the results of
 * {@link SystemUnit#multiply(Unit)}, {@link SystemUnit#divide(Unit)} and {@link SystemUnit#pow(int)}
 * since this test uses constants that were created with above operations.
 */
@Test
public void testGetBaseDimensions() {
  assertNull("METRE",  Units.METRE .getBaseUnits());      // Null value as per JSR-363 specification.
  assertNull("SECOND", Units.SECOND.getBaseUnits());
  assertTrue("UNITY",  Units.UNITY .getBaseUnits().isEmpty());
  assertMapEquals(Collections.singletonMap(Units.METRE, 3), Units.CUBIC_METRE.getBaseUnits());
  final Map<Unit<?>,Integer> expected = new HashMap<>(4);
  assertNull(expected.put(Units.KILOGRAM, 1));
  assertNull(expected.put(Units.METRE,    1));
  assertNull(expected.put(Units.SECOND,  -2));
  assertMapEquals(expected, Units.NEWTON.getBaseUnits());
}

Map<? extends Unit<?>, Integer> c = unscaled.getBaseUnits();
if (c == null) c = Collections.singletonMap(unit, 1);
components = c;

 buffer.append(symbol);
 return NOOP_PRECEDENCE;
} else if (unit.getBaseUnits() != null) {
 Map<Unit<?>, Integer> productUnits = (Map<Unit<?>, Integer>) unit.getBaseUnits();
 int negativeExponentCount = 0;

} else {
  components = unit.getBaseUnits();
  if (components == null) {
    components = Collections.singletonMap(unit, 1);

 buffer.append(symbol);
 return NOOP_PRECEDENCE;
} else if (unit.getBaseUnits() != null) {
 Map<Unit<?>, Integer> productUnits = (Map<Unit<?>, Integer>) unit.getBaseUnits();
 int negativeExponentCount = 0;

if (symbol != null) {
 return noopPrecedenceInternal(buffer, symbol);
} else if (unit.getBaseUnits() != null) {
 return productPrecedenceInternal(unit, buffer, symbolMap);
} else if (unit instanceof BaseUnit<?>) {

if (symbol != null) {
 return noopPrecedenceInternal(buffer, symbol);
} else if (unit.getBaseUnits() != null) {
 return productPrecedenceInternal(unit, buffer, symbolMap);
} else if (unit instanceof BaseUnit<?>) {

/**
 * Tests {@link SystemUnit#multiply(Unit)}.
 */
@Test
@DependsOnMethod("testEqualsAndHashCode")
public void testMultiply() {
  assertSame(Units.METRE,        Units.METRE.multiply(Units.UNITY));
  assertSame(Units.SQUARE_METRE, Units.METRE.multiply(Units.METRE));
  assertSame(Units.CUBIC_METRE,  Units.METRE.multiply(Units.SQUARE_METRE));
  assertSame(Units.CUBIC_METRE,  Units.SQUARE_METRE.multiply(Units.METRE));
  final Map<Unit<?>,Integer> expected = new HashMap<>(4);
  assertNull(expected.put(Units.METRE,  1));
  assertNull(expected.put(Units.SECOND, 1));
  assertMapEquals(expected, Units.METRE.multiply(Units.SECOND).getBaseUnits());
}