101: Expose Prefix name via API

Task-Url: https://github.com/unitsofmeasurement/unit-api/issues/issues/101

Author: keilw

src/main/java/javax/measure/BinaryPrefix.java

@@ -35,7 +35,7 @@
  * </p>
  *
  * @author <a href="mailto:units@catmedia.us">Werner Keil</a>
- * @version 1.3, April 20, 2018
+ * @version 1.4, August 8, 2018
  * @see <a href="https://en.wikipedia.org/wiki/Binary_prefix">Wikipedia: Binary Prefix</a>
  * @since 2.0
  */
@@ -176,21 +176,34 @@ public static <Q extends Quantity<Q>> Unit<Q> YOBI(Unit<Q> unit) {
    *
    * @return this prefix symbol, not {@code null}.
    */
+  @Override
   public String getSymbol() {
     return symbol;
   }
 
   /**
    * Base part of the associated factor in base^exponent representation.
    */
+  @Override
   public int getBase() {
     return base;
   }
 
   /**
    * Exponent part of the associated factor in base^exponent representation.
    */
+  @Override
   public int getExponent() {
     return exponent;
   }
+
+  /**
+   * Returns the name of this prefix.
+   *
+   * @return this prefix name, not {@code null}.
+   */
+  @Override
+  public String getName() {
+    return name();
+  }
 }

src/main/java/javax/measure/MetricPrefix.java

@@ -50,7 +50,7 @@
  * @see <a href="http://en.wikipedia.org/wiki/Metric_prefix">Wikipedia: Metric Prefix</a>
  * @author <a href="mailto:jean-marie@dautelle.com">Jean-Marie Dautelle</a>
  * @author <a href="mailto:units@catmedia.us">Werner Keil</a>
- * @version 1.8, 2018-04-20
+ * @version 1.9, 2018-08-08
  * @since 2.0
  */
 public enum MetricPrefix implements Prefix {
@@ -374,22 +374,34 @@ public static <Q extends Quantity<Q>> Unit<Q> YOCTO(Unit<Q> unit) {
    *
    * @return this prefix symbol, not {@code null}.
    */
+  @Override
   public String getSymbol() {
     return symbol;
   }
 
   /**
    * Base part of the associated factor in base^exponent representation.
    */
+  @Override
   public int getBase() {
     return base;
   }
 
   /**
    * Exponent part of the associated factor in base^exponent representation.
    */
+  @Override
   public int getExponent() {
     return exponent;
   }
 
+  /**
+   * Returns the name of this prefix.
+   *
+   * @return this prefix name, not {@code null}.
+   */
+  @Override
+  public String getName() {
+    return name();
+  }
 }

src/main/java/javax/measure/Prefix.java

@@ -35,7 +35,7 @@
  *
  * @see <a href="http://en.wikipedia.org/wiki/Unit_prefix">Wikipedia: Unit Prefix</a>
  * @author <a href="mailto:units@catmedia.us">Werner Keil</a>
- * @version 0.9, 2018-06-17
+ * @version 1.0, 2018-08-08
  * @since 2.0
  */
 public interface Prefix {
@@ -61,4 +61,11 @@ public interface Prefix {
    */
   public int getExponent();
 
+  /**
+   * Returns the name of this prefix.
+   *
+   * @return this prefix name, not {@code null}.
+   *
+   */
+  String getName();
 }