Support Jawbone activity distance with decimal

Jawbone documentation stated that the "meters" value in workouts was of type int, which was supported by all of the test data we had ever seen. However, it was brought to our attention that the value can contain a number with decimal values, which failed to map using an integer-based json mapper. We switched the mapper to use BigDecimal instead of integer as the parsing type, which handles both integer and double data at high precision.

Author: schaefba

java-shim-sdk/src/main/java/org/openmhealth/shim/common/mapper/JsonNodeMappingSupport.java

@@ -5,6 +5,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.math.BigDecimal;
 import java.time.*;
 import java.time.format.DateTimeFormatter;
 import java.time.format.DateTimeParseException;
@@ -83,6 +84,7 @@ public static String asRequiredString(JsonNode parentNode, String path) {
     }
 
     // TODO add tests
+
     /**
      * @param parentNode a parent node
      * @param path the path to a child node
@@ -108,6 +110,7 @@ public static Long asRequiredLong(JsonNode parentNode, String path) {
     }
 
     // TODO add tests
+
     /**
      * @param parentNode a parent node
      * @param path the path to a child node
@@ -397,6 +400,17 @@ public static Optional<Integer> asOptionalInteger(JsonNode parentNode, String pa
         return asOptionalValue(parentNode, path, JsonNode::isIntegralNumber, JsonNode::intValue);
     }
 
+    /**
+     * @param parentNode a parent node
+     * @param path the path to a child node
+     * @return the value of the child node as a Big Decimal, or an empty optional if the child doesn't exist or if the
+     * value of the child node isn't numeric
+     */
+    public static Optional<BigDecimal> asOptionalBigDecimal(JsonNode parentNode, String path) {
+
+        return asOptionalValue(parentNode, path, JsonNode::isNumber, JsonNode::decimalValue);
+    }
+
     /**
      * @param parentNode a parent node
      * @param path the path to a child node

shim-server/src/main/java/org/openmhealth/shim/jawbone/mapper/JawbonePhysicalActivityDataPointMapper.java

@@ -46,7 +46,6 @@
  * @author Emerson Farrugia
  * @author Danilo Bonilla
  * @author Chris Schaefbauer
- *
  * @see <a href="https://jawbone.com/up/developer/endpoints/workouts">API documentation</a>
  */
 public class JawbonePhysicalActivityDataPointMapper extends JawboneDataPointMapper<PhysicalActivity> {
@@ -100,7 +99,8 @@ protected Optional<PhysicalActivity> getMeasure(JsonNode workoutNode) {
 
         PhysicalActivity.Builder builder = new PhysicalActivity.Builder(activityName);
 
-        asOptionalInteger(workoutNode, "details.meters")
+
+        asOptionalBigDecimal(workoutNode, "details.meters")
                 .ifPresent(distance -> builder.setDistance(new LengthUnitValue(METER, distance)));
 
         Optional<Long> endTimestamp = asOptionalLong(workoutNode, "time_completed");
@@ -152,7 +152,7 @@ public String getActivityName(@Nullable String title, @Nullable Integer workoutT
      */
     public SelfReportedIntensity asSelfReportedIntensity(int intensityValue) {
 
-        switch (intensityValue) {
+        switch ( intensityValue ) {
             case 1:
                 return LIGHT;
             case 2:

shim-server/src/test/java/org/openmhealth/shim/jawbone/mapper/JawbonePhysicalActivityDataPointMapperUnitTests.java

@@ -101,7 +101,7 @@ public void asDataPointsShouldReturnCorrectMissingSensedDataPoints() {
         List<DataPoint<PhysicalActivity>> dataPoints = mapper.asDataPoints(singletonList(responseNode));
 
         PhysicalActivity expectedPhysicalActivity = new PhysicalActivity.Builder("Bike")
-                .setDistance(new LengthUnitValue(METER, 1188))
+                .setDistance(new LengthUnitValue(METER, 6318.2688961))
                 .setEffectiveTimeFrame(
                         TimeInterval.ofEndDateTimeAndDuration(OffsetDateTime.parse("2015-04-29T16:07:07-04:00"),
                                 new DurationUnitValue(SECOND, 343)))

shim-server/src/test/resources/org/openmhealth/shim/jawbone/mapper/jawbone-workouts.json

@@ -48,7 +48,7 @@
                     "goal": 0,
                     "intensity": null,
                     "km": 1.188,
-                    "meters": 1188,
+                    "meters": 6318.2688961,
                     "place_acc": 0,
                     "steps": 0,
                     "time": 343,