GeoWaveReducer.java 文件源码

protected void reduceWritableValues(
        final GeoWaveInputKey key,
        final Iterable<ObjectWritable> values,
        final Reducer<GeoWaveInputKey, ObjectWritable, GeoWaveInputKey, ObjectWritable>.Context context )
        throws IOException,
        InterruptedException {
    final HadoopWritableSerializer<?, Writable> serializer = serializationTool
            .getHadoopWritableSerializerForAdapter(key.getAdapterId());
    final Iterable<Object> transformedValues = Iterables.transform(
            values,
            new Function<ObjectWritable, Object>() {
                @Override
                public Object apply(
                        final ObjectWritable writable ) {
                    final Object innerObj = writable.get();
                    return innerObj instanceof Writable ? serializer.fromWritable((Writable) innerObj) : innerObj;
                }
            });
    reduceNativeValues(
            key,
            transformedValues,
            new NativeReduceContext(
                    context,
                    serializationTool));
}