List of usage examples for org.apache.commons.collections4 ListUtils emptyIfNull
public static <T> List<T> emptyIfNull(final List<T> list)
null, or the argument itself otherwise. From source file:org.apache.samza.execution.ExecutionPlanner.java
/** * Groups streams participating in joins together. *///w ww. j av a 2s . com private static List<StreamSet> groupJoinedStreams(JobGraph jobGraph) { // Group input operator specs (input/intermediate streams) by the joins they participate in. Multimap<OperatorSpec, InputOperatorSpec> joinOpSpecToInputOpSpecs = OperatorSpecGraphAnalyzer .getJoinToInputOperatorSpecs(jobGraph.getApplicationDescriptorImpl().getInputOperators().values()); Map<String, TableDescriptor> tableDescriptors = jobGraph.getTables().stream() .collect(Collectors.toMap(TableDescriptor::getTableId, Function.identity())); // Convert every group of input operator specs into a group of corresponding stream edges. List<StreamSet> streamSets = new ArrayList<>(); for (OperatorSpec joinOpSpec : joinOpSpecToInputOpSpecs.keySet()) { Collection<InputOperatorSpec> joinedInputOpSpecs = joinOpSpecToInputOpSpecs.get(joinOpSpec); StreamSet streamSet = getStreamSet(joinOpSpec.getOpId(), joinedInputOpSpecs, jobGraph); // If current join is a stream-table join, add the stream edges corresponding to side-input // streams associated with the joined table (if any). if (joinOpSpec instanceof StreamTableJoinOperatorSpec) { StreamTableJoinOperatorSpec streamTableJoinOperatorSpec = (StreamTableJoinOperatorSpec) joinOpSpec; TableDescriptor tableDescriptor = tableDescriptors.get(streamTableJoinOperatorSpec.getTableId()); if (tableDescriptor instanceof LocalTableDescriptor) { LocalTableDescriptor localTableDescriptor = (LocalTableDescriptor) tableDescriptor; Collection<String> sideInputs = ListUtils.emptyIfNull(localTableDescriptor.getSideInputs()); Iterable<StreamEdge> sideInputStreams = sideInputs.stream() .map(jobGraph::getStreamEdge)::iterator; Iterable<StreamEdge> streams = streamSet.getStreamEdges(); streamSet = new StreamSet(streamSet.getSetId(), Iterables.concat(streams, sideInputStreams)); } } streamSets.add(streamSet); } return Collections.unmodifiableList(streamSets); }
From source file:org.apache.syncope.core.misc.utils.MappingUtils.java
/** * Set attribute values, according to the given {@link MappingItem}, to any object from attribute received from * connector./*from w ww . j av a2s . co m*/ * * @param <T> any object * @param mappingItem mapping item * @param attr attribute received from connector * @param anyTO any object * @param anyUtils any utils */ @Transactional(readOnly = true) public <T extends AnyTO> void setIntValues(final MappingItem mappingItem, final Attribute attr, final T anyTO, final AnyUtils anyUtils) { List<Object> values = null; if (attr != null) { values = attr.getValue(); for (MappingItemTransformer transformer : getMappingItemTransformers(mappingItem)) { values = transformer.beforeSync(values); } } values = ListUtils.emptyIfNull(values); switch (mappingItem.getIntMappingType()) { case UserKey: case GroupKey: case AnyObjectKey: break; case Password: if (anyTO instanceof UserTO && !values.isEmpty()) { ((UserTO) anyTO).setPassword(ConnObjectUtils.getPassword(values.get(0))); } break; case Username: if (anyTO instanceof UserTO) { ((UserTO) anyTO) .setUsername(values.isEmpty() || values.get(0) == null ? null : values.get(0).toString()); } break; case GroupName: if (anyTO instanceof GroupTO) { ((GroupTO) anyTO) .setName(values.isEmpty() || values.get(0) == null ? null : values.get(0).toString()); } break; case GroupOwnerSchema: if (anyTO instanceof GroupTO && attr != null) { // using a special attribute (with schema "", that will be ignored) for carrying the // GroupOwnerSchema value AttrTO attrTO = new AttrTO(); attrTO.setSchema(StringUtils.EMPTY); if (values.isEmpty() || values.get(0) == null) { attrTO.getValues().add(StringUtils.EMPTY); } else { attrTO.getValues().add(values.get(0).toString()); } ((GroupTO) anyTO).getPlainAttrs().add(attrTO); } break; case UserPlainSchema: case GroupPlainSchema: case AnyObjectPlainSchema: AttrTO attrTO = new AttrTO(); attrTO.setSchema(mappingItem.getIntAttrName()); PlainSchema schema = plainSchemaDAO.find(mappingItem.getIntAttrName()); for (Object value : values) { AttrSchemaType schemaType = schema == null ? AttrSchemaType.String : schema.getType(); if (value != null) { PlainAttrValue attrValue = anyUtils.newPlainAttrValue(); switch (schemaType) { case String: attrValue.setStringValue(value.toString()); break; case Binary: attrValue.setBinaryValue((byte[]) value); break; default: try { attrValue.parseValue(schema, value.toString()); } catch (ParsingValidationException e) { LOG.error("While parsing provided value {}", value, e); attrValue.setStringValue(value.toString()); schemaType = AttrSchemaType.String; } break; } attrTO.getValues().add(attrValue.getValueAsString(schemaType)); } } anyTO.getPlainAttrs().add(attrTO); break; case UserDerivedSchema: case GroupDerivedSchema: case AnyObjectDerivedSchema: attrTO = new AttrTO(); attrTO.setSchema(mappingItem.getIntAttrName()); anyTO.getDerAttrs().add(attrTO); break; case UserVirtualSchema: case GroupVirtualSchema: case AnyObjectVirtualSchema: attrTO = new AttrTO(); attrTO.setSchema(mappingItem.getIntAttrName()); // virtual attributes don't get transformed, iterate over original attr.getValue() for (Object value : (attr == null || attr.getValue() == null) ? Collections.emptyList() : attr.getValue()) { if (value != null) { attrTO.getValues().add(value.toString()); } } anyTO.getVirAttrs().add(attrTO); break; default: } }
From source file:org.apache.syncope.core.provisioning.java.VirAttrHandlerImpl.java
@Override public List<String> getValues(final Any<?> any, final VirSchema schema) { if (!anyUtilsFactory.getInstance(any).getAllowedSchemas(any, VirSchema.class).forSelfContains(schema)) { LOG.debug("{} not allowed for {}", schema, any); return Collections.emptyList(); }//from w ww . j ava 2 s . com return ListUtils.emptyIfNull(getValues(any, Collections.singleton(schema)).get(schema)); }
From source file:org.apache.syncope.core.provisioning.java.VirAttrHandlerImpl.java
@Override public List<String> getValues(final Any<?> any, final Membership<?> membership, final VirSchema schema) { if (!anyUtilsFactory.getInstance(any).getAllowedSchemas(any, VirSchema.class) .getForMembership(membership.getRightEnd()).contains(schema)) { LOG.debug("{} not allowed for {}", schema, any); return Collections.emptyList(); }/* ww w.ja v a2s . co m*/ return ListUtils.emptyIfNull(getValues(any, Collections.singleton(schema)).get(schema)); }
From source file:org.apache.tez.dag.app.TaskCommunicatorManager.java
public TaskHeartbeatResponse heartbeat(TaskHeartbeatRequest request) throws IOException, TezException { ContainerId containerId = ConverterUtils.toContainerId(request.getContainerIdentifier()); if (LOG.isDebugEnabled()) { LOG.debug("Received heartbeat from container" + ", request=" + request); }/* w w w.j a v a2s . c o m*/ if (!registeredContainers.containsKey(containerId)) { LOG.warn("Received task heartbeat from unknown container with id: " + containerId + ", asking it to die"); return RESPONSE_SHOULD_DIE; } // A heartbeat can come in anytime. The AM may have made a decision to kill a running task/container // meanwhile. If the decision is processed through the pipeline before the heartbeat is processed, // the heartbeat will be dropped. Otherwise the heartbeat will be processed - and the system // know how to handle this - via FailedInputEvents for example (relevant only if the heartbeat has events). // So - avoiding synchronization. pingContainerHeartbeatHandler(containerId); TaskAttemptEventInfo eventInfo = new TaskAttemptEventInfo(0, null, 0); TezTaskAttemptID taskAttemptID = request.getTaskAttemptId(); if (taskAttemptID != null) { ContainerId containerIdFromMap = registeredAttempts.get(taskAttemptID); if (containerIdFromMap == null || !containerIdFromMap.equals(containerId)) { // This can happen when a task heartbeats. Meanwhile the container is unregistered. // The information will eventually make it through to the plugin via a corresponding unregister. // There's a race in that case between the unregister making it through, and this method returning. // TODO TEZ-2003 (post) TEZ-2666. An exception back is likely a better approach than sending a shouldDie = true, // so that the plugin can handle the scenario. Alternately augment the response with error codes. // Error codes would be better than exceptions. LOG.info("Attempt: " + taskAttemptID + " is not recognized for heartbeats"); return RESPONSE_SHOULD_DIE; } List<TezEvent> inEvents = request.getEvents(); if (LOG.isDebugEnabled()) { LOG.debug("Ping from " + taskAttemptID.toString() + " events: " + (inEvents != null ? inEvents.size() : -1)); } long currTime = context.getClock().getTime(); // taFinishedEvents - means the TaskAttemptFinishedEvent // taGeneratedEvents - for recovery, means the events generated by this task attempt and is needed by its downstream vertices // eventsForVertex - including all the taGeneratedEvents and other events such as INPUT_READ_ERROR_EVENT/INPUT_FAILED_EVENT // taGeneratedEvents is routed both to TaskAttempt & Vertex. Route to Vertex is for performance consideration // taFinishedEvents must be routed before taGeneratedEvents List<TezEvent> taFinishedEvents = new ArrayList<TezEvent>(); List<TezEvent> taGeneratedEvents = new ArrayList<TezEvent>(); List<TezEvent> eventsForVertex = new ArrayList<TezEvent>(); TaskAttemptEventStatusUpdate taskAttemptEvent = null; boolean readErrorReported = false; for (TezEvent tezEvent : ListUtils.emptyIfNull(inEvents)) { // for now, set the event time on the AM when it is received. // this avoids any time disparity between machines. tezEvent.setEventReceivedTime(currTime); final EventType eventType = tezEvent.getEventType(); if (eventType == EventType.TASK_STATUS_UPDATE_EVENT) { // send TA_STATUS_UPDATE before TA_DONE/TA_FAILED/TA_KILLED otherwise Status may be missed taskAttemptEvent = new TaskAttemptEventStatusUpdate(taskAttemptID, (TaskStatusUpdateEvent) tezEvent.getEvent()); } else if (eventType == EventType.TASK_ATTEMPT_COMPLETED_EVENT || eventType == EventType.TASK_ATTEMPT_FAILED_EVENT || eventType == EventType.TASK_ATTEMPT_KILLED_EVENT) { taFinishedEvents.add(tezEvent); } else { if (eventType == EventType.INPUT_READ_ERROR_EVENT) { readErrorReported = true; } if (eventType == EventType.DATA_MOVEMENT_EVENT || eventType == EventType.COMPOSITE_DATA_MOVEMENT_EVENT || eventType == EventType.ROOT_INPUT_INITIALIZER_EVENT || eventType == EventType.VERTEX_MANAGER_EVENT) { taGeneratedEvents.add(tezEvent); } eventsForVertex.add(tezEvent); } } if (taskAttemptEvent != null) { taskAttemptEvent.setReadErrorReported(readErrorReported); sendEvent(taskAttemptEvent); } // route taGeneratedEvents to TaskAttempt if (!taGeneratedEvents.isEmpty()) { sendEvent(new TaskAttemptEventTezEventUpdate(taskAttemptID, taGeneratedEvents)); } // route events to TaskAttempt Preconditions.checkArgument(taFinishedEvents.size() <= 1, "Multiple TaskAttemptFinishedEvent"); for (TezEvent e : taFinishedEvents) { EventMetaData sourceMeta = e.getSourceInfo(); switch (e.getEventType()) { case TASK_ATTEMPT_FAILED_EVENT: case TASK_ATTEMPT_KILLED_EVENT: TaskAttemptTerminationCause errCause = null; switch (sourceMeta.getEventGenerator()) { case INPUT: errCause = TaskAttemptTerminationCause.INPUT_READ_ERROR; break; case PROCESSOR: errCause = TaskAttemptTerminationCause.APPLICATION_ERROR; break; case OUTPUT: errCause = TaskAttemptTerminationCause.OUTPUT_WRITE_ERROR; break; case SYSTEM: errCause = TaskAttemptTerminationCause.FRAMEWORK_ERROR; break; default: throw new TezUncheckedException( "Unknown EventProducerConsumerType: " + sourceMeta.getEventGenerator()); } if (e.getEventType() == EventType.TASK_ATTEMPT_FAILED_EVENT) { TaskAttemptFailedEvent taskFailedEvent = (TaskAttemptFailedEvent) e.getEvent(); sendEvent(new TaskAttemptEventAttemptFailed(sourceMeta.getTaskAttemptID(), TaskAttemptEventType.TA_FAILED, taskFailedEvent.getTaskFailureType(), "Error: " + taskFailedEvent.getDiagnostics(), errCause)); } else { // Killed TaskAttemptKilledEvent taskKilledEvent = (TaskAttemptKilledEvent) e.getEvent(); sendEvent(new TaskAttemptEventAttemptKilled(sourceMeta.getTaskAttemptID(), "Error: " + taskKilledEvent.getDiagnostics(), errCause)); } break; case TASK_ATTEMPT_COMPLETED_EVENT: sendEvent(new TaskAttemptEvent(sourceMeta.getTaskAttemptID(), TaskAttemptEventType.TA_DONE)); break; default: throw new TezUncheckedException("Unhandled tez event type: " + e.getEventType()); } } if (!eventsForVertex.isEmpty()) { TezVertexID vertexId = taskAttemptID.getTaskID().getVertexID(); sendEvent(new VertexEventRouteEvent(vertexId, Collections.unmodifiableList(eventsForVertex))); } taskHeartbeatHandler.pinged(taskAttemptID); eventInfo = context.getCurrentDAG().getVertex(taskAttemptID.getTaskID().getVertexID()) .getTaskAttemptTezEvents(taskAttemptID, request.getStartIndex(), request.getPreRoutedStartIndex(), request.getMaxEvents()); } return new TaskHeartbeatResponse(false, eventInfo.getEvents(), eventInfo.getNextFromEventId(), eventInfo.getNextPreRoutedFromEventId()); }
From source file:org.dspace.discovery.DiscoverResult.java
public List<FacetResult> getFacetResult(String facet) { return ListUtils.emptyIfNull(facetResults.get(facet)); }
From source file:org.dspace.discovery.DiscoverResult.java
public List<FacetResult> getFacetResult(DiscoverySearchFilterFacet field) { List<DiscoverResult.FacetResult> facetValues = getFacetResult(field.getIndexFieldName()); //Check if we are dealing with a date, sometimes the facet values arrive as dates ! if (facetValues.size() == 0 && field.getType().equals(DiscoveryConfigurationParameters.TYPE_DATE)) { facetValues = getFacetResult(field.getIndexFieldName() + ".year"); }//from w w w .j ava2s . c om return ListUtils.emptyIfNull(facetValues); }
From source file:org.heliosphere.thot.akka.chat.client.TerminalActor.java
/** * Handles a command response./* w w w .j ava 2 s . c o m*/ * <hr> * @param response Command response to handle. */ @SuppressWarnings("nls") protected void handleResponse(final @NonNull ICommandResponse response) { switch ((DefaultCommandCodeType) response.getOrder()) { case DISPLAY_TERMINAL: // Display the status of the command execution then the exceptions and then the messages. terminal.getTerminal().println("[status: " + response.getStatus() + " for command: " + response.getCommand().getMetadata().getName() + "]"); for (Exception e : ListUtils.emptyIfNull(response.getExceptions())) { terminal.getTerminal().println(" Error: " + e.getMessage()); } for (String element : ListUtils.emptyIfNull(response.getMessages())) { terminal.getTerminal().println(element); } break; case QUIT: getContext().system().terminate(); terminal.getTerminal().println("System is shutting down..."); break; default: break; } // Resumes the terminal thread. terminal.resume(); }
From source file:org.kuali.coeus.common.budget.impl.core.category.BudgetCategoryMapServiceImpl.java
private <T extends BusinessObject> List<T> findByMappingName(String mappingName, Class<T> clazz) { if (StringUtils.isBlank(mappingName)) { throw new IllegalArgumentException("mappingName is blank"); }//from w w w. j a v a 2 s . c om return ListUtils.emptyIfNull((List<T>) businessObjectService.findMatching(clazz, Collections.singletonMap(KEY_MAPPING_NAME, mappingName))); }
From source file:org.kuali.coeus.common.budget.impl.core.category.BudgetCategoryMapServiceImpl.java
private <T extends BusinessObject> List<T> findByTargetAndMappingName(String targetCategoryCode, String mappingName, Class<T> clazz) { if (StringUtils.isBlank(targetCategoryCode)) { throw new IllegalArgumentException("targetCategoryCode is blank"); }//from w w w . j av a2 s . c o m if (StringUtils.isBlank(mappingName)) { throw new IllegalArgumentException("mappingName is blank"); } final Map<String, String> conditionMap = new HashMap<String, String>(); conditionMap.put(KEY_MAPPING_NAME, mappingName); conditionMap.put(KEY_TARGET_CATEGORY_CODE, targetCategoryCode); return ListUtils.emptyIfNull((List<T>) businessObjectService.findMatching(clazz, conditionMap)); }