How to use

getSubset

method

in

org.janusgraph.diskstorage.configuration.Configuration

@Override
public Map<String, Object> getSubset(ConfigNamespace umbrella,
    String... umbrellaElements) {
  ImmutableMap.Builder<String, Object> b = ImmutableMap.builder();
  Map<String, Object> fm = first.getSubset(umbrella, umbrellaElements);
  Map<String, Object> sm = second.getSubset(umbrella, umbrellaElements);
  b.putAll(first.getSubset(umbrella, umbrellaElements));
  for (Map.Entry<String, Object> secondEntry : sm.entrySet()) {
    if (!fm.containsKey(secondEntry.getKey())) {
      b.put(secondEntry);
    }
  }
  return b.build();
}
@Override

@Override
public Map<String, Object> getSubset(ConfigNamespace umbrella, String... umbrellaElements) {
  return config.getSubset(umbrella,concat(umbrellaElements));
}

static void applySettingsFromJanusGraphConf(Map<String, Object> settings,
                      Configuration config) {
  int keysLoaded = 0;
  final Map<String,Object> configSub = config.getSubset(ElasticSearchIndex.ES_CREATE_EXTRAS_NS);
  for (Map.Entry<String,Object> entry : configSub.entrySet()) {
    String key = entry.getKey();
    Object val = entry.getValue();
    if (null == val) continue;
    if (List.class.isAssignableFrom(val.getClass())) {
      // Pretty print lists using comma-separated values and no surrounding square braces for ES
      List l = (List) val;
      settings.put(key, Joiner.on(",").join(l));
    } else if (val.getClass().isArray()) {
      // As with Lists, but now for arrays
      // The Object copy[] business lets us avoid repetitive primitive array type checking and casting
      Object copy[] = new Object[Array.getLength(val)];
      for (int i= 0; i < copy.length; i++) {
        copy[i] = Array.get(val, i);
      }
      settings.put(key, Joiner.on(",").join(copy));
    } else {
      // Copy anything else unmodified
      settings.put(key, val.toString());
    }
    log.debug("[ES ext.* cfg] Set {}: {}", key, val);
    keysLoaded++;
  }
  log.debug("Loaded {} settings from the {} JanusGraph config namespace", keysLoaded, ElasticSearchIndex.ES_CREATE_EXTRAS_NS);
}

Map<String,Object> configSub = config.getSubset(HBASE_CONFIGURATION_NAMESPACE);
for (Map.Entry<String,Object> entry : configSub.entrySet()) {
  logger.info("HBase configuration: setting {}={}", entry.getKey(), entry.getValue());

Map<String, Object> jobConfMap = conf.getSubset(confRoot);
for (Map.Entry<String, Object> jobConfEntry : jobConfMap.entrySet()) {
  hadoopJobConf.set((ConfigOption) ConfigElement.parse(confRoot, jobConfEntry.getKey()).element, jobConfEntry.getValue());

Map<String, Object> jobConfMap = conf.getSubset(confRoot);
for (Map.Entry<String, Object> jobConfEntry : jobConfMap.entrySet()) {
  hadoopJobConf.set((ConfigOption) ConfigElement.parse(confRoot, jobConfEntry.getKey()).element, jobConfEntry.getValue());

allowMappingUpdate = config.get(ALLOW_MAPPING_UPDATE);
createSleep = config.get(CREATE_SLEEP);
ingestPipelines = config.getSubset(ES_INGEST_PIPELINES);
final ElasticSearchSetup.Connection c = interfaceConfiguration(config);
client = c.getClient();