@Override
protected void setup(
final Reducer<Text, CountofDoubleWritable, GeoWaveOutputKey, DistortionEntry>.Context
context)
throws IOException, InterruptedException {
super.setup(context);
final ScopedJobConfiguration config =
new ScopedJobConfiguration(
context.getConfiguration(),
KMeansDistortionMapReduce.class,
KMeansDistortionMapReduce.LOGGER);
final int k = config.getInt(JumpParameters.Jump.COUNT_OF_CENTROIDS, -1);
if (k > 0) {
expectedK = k;
}
try {
centroidManager =
new CentroidManagerGeoWave<Object>(
context, KMeansDistortionMapReduce.class, KMeansDistortionMapReduce.LOGGER);
} catch (final Exception e) {
KMeansDistortionMapReduce.LOGGER.warn("Unable to initialize centroid manager", e);
throw new IOException("Unable to initialize centroid manager", e);
}
batchId =
config.getString(GlobalParameters.Global.PARENT_BATCH_ID, centroidManager.getBatchId());
}
@Override
public Object getValue(
final JobContext context, final Class<?> scope, final Object defaultValue) {
final ScopedJobConfiguration scopedConfig =
new ScopedJobConfiguration(context.getConfiguration(), scope);
if (baseClass.isAssignableFrom(Integer.class)) {
return Integer.valueOf(
scopedConfig.getInt(parent.self(), ((Integer) defaultValue).intValue()));
} else if (baseClass.isAssignableFrom(String.class)) {
return scopedConfig.getString(parent.self(), defaultValue.toString());
} else if (baseClass.isAssignableFrom(Double.class)) {
return scopedConfig.getDouble(parent.self(), (Double) defaultValue);
} else if (baseClass.isAssignableFrom(byte[].class)) {
return scopedConfig.getBytes(parent.self());
} else if ((defaultValue == null) || (defaultValue instanceof Class)) {
try {
return scopedConfig.getInstance(parent.self(), baseClass, (Class) defaultValue);
} catch (InstantiationException | IllegalAccessException e) {
LOGGER.error("Unable to get instance from job context", e);
}
}
return null;
}