Java HashSet類代碼示例

import java.util.HashSet; //導入依賴的package包/類
public void setupDepartments(EditRoomDeptForm editRoomDeptForm, HttpServletRequest request, Location location) throws Exception {

    	Collection availableDepts = new Vector();
    	Collection currentDepts = new HashSet();

        Set<Department> departments = Department.getUserDepartments(sessionContext.getUser());
        
    	boolean hasControl = false;
        for (RoomDept rd: location.getRoomDepts()) {
    		currentDepts.add(rd.getDepartment());
    		if (departments.contains(rd.getDepartment()) && rd.isControl())
    			hasControl = true;
    	}
        
		Set<Department> set = Department.findAllBeingUsed(location.getSession().getUniqueId());
				
		for (Department d: set) {
			if (hasControl || departments.contains(d) || !currentDepts.contains(d)) 
				availableDepts.add(new LabelValueBean(d.getDeptCode() + " - " + d.getName(), d.getUniqueId().toString()));
		}
		
		request.setAttribute(Department.DEPT_ATTR_NAME, availableDepts);
    }
 

import java.util.HashSet; //導入依賴的package包/類
private void logFormRequest(final Form form) {
    if (LOGGER.isDebugEnabled()) {
        final Set<String> pairs = new HashSet<String>();
        for (final String name : form.getNames()) {
            final StringBuilder builder = new StringBuilder();
            builder.append(name);
            builder.append(": ");
            if (!"password".equalsIgnoreCase(name)) {
                builder.append(form.getValues(name));
            } else {
                builder.append("*****");
            }
            pairs.add(builder.toString());
        }
        LOGGER.debug(StringUtils.join(pairs, ", "));
    }
}
 

import java.util.HashSet; //導入依賴的package包/類
/**
 * Returns the set of entry names and reports any duplicate entry names in the {@code result}
 * as errors.
 */
private static Set<String> checkForDuplicateEntries(
        List<CentralDirectoryRecord> cdRecords, Result result) {
    Set<String> cdEntryNames = new HashSet<>(cdRecords.size());
    Set<String> duplicateCdEntryNames = null;
    for (CentralDirectoryRecord cdRecord : cdRecords) {
        String entryName = cdRecord.getName();
        if (!cdEntryNames.add(entryName)) {
            // This is an error. Report this once per duplicate name.
            if (duplicateCdEntryNames == null) {
                duplicateCdEntryNames = new HashSet<>();
            }
            if (duplicateCdEntryNames.add(entryName)) {
                result.addError(Issue.JAR_SIG_DUPLICATE_ZIP_ENTRY, entryName);
            }
        }
    }
    return cdEntryNames;
}
 

import java.util.HashSet; //導入依賴的package包/類
@Override
@RequestMapping(value = ApiConfig.ITEM_TYPE + "/{providerType}", method = RequestMethod.GET,
        headers = ApiConfig.API_HEADERS, produces = {ApiConfig.API_PRODUCES})
@ResponseBody
public ItemTypeList getItemTypes(@PathVariable final String providerType,
        @CookieValue(value = SessionManager.SESSION_COOKIE, required = false) final String sessionId,
        final HttpServletResponse response) {
    if (rateLimiter.tryAcquire()) {
        modelValidator.validateProviderType(providerType);
        sessionManager.getSession(sessionId, response);

        if (LOG.isDebugEnabled()) {
            LOG.debug("Get all itemTypes for a provider type");
        }

        return new ItemTypeList(new HashSet<>(itemTypeManager.getItemTypes(providerType)));
    } else {
        throw new ApiThrottlingException("Exceeded max number of requests per second");
    }
}
 

import java.util.HashSet; //導入依賴的package包/類
/**
 * 
 * @param v
 * @return
 */
private Set<Vertex> computeParentVertices(Vertex v) {
    HashSet<Vertex> parentVertices = new HashSet<Vertex>();

    Edge reverseEdge = reverseEdges.get(v);
    Vertex currentVertex = v;

    while (reverseEdge != null) {
        Vertex parentVertex = reverseEdge.getOppositeVertex(currentVertex);
        parentVertices.add(parentVertex);
        currentVertex = parentVertex;
        reverseEdge = reverseEdges.get(currentVertex);
    }

    return parentVertices;
}
 

import java.util.HashSet; //導入依賴的package包/類
public ConfusionMatrix(int[] truth, int[] prediction) {
	if(truth.length != prediction.length){
		 throw new IllegalArgumentException(String.format("The vector sizes don't match: %d != %d.", truth.length, prediction.length));
	}
	
	Set<Integer> ySet = new HashSet<>();
	
	for(int i = 0; i < truth.length; i++){
		ySet.add(truth[i]);
	}
	
	matrix = new int[ySet.size()][ySet.size()];
	
	for(int i = 0; i < truth.length; i++){
		matrix[truth[i]][prediction[i]] += 1;
	}
	
	ySet.clear();
}
 

import java.util.HashSet; //導入依賴的package包/類
public void testRenameUnversionedFile_FO() throws Exception {
    // init
    File fromFile = new File(repositoryLocation, "fromFile");
    fromFile.createNewFile();
    File toFile = new File(repositoryLocation, "toFile");

    // rename
    h.setFilesToRefresh(new HashSet<File>(Arrays.asList(fromFile, toFile)));
    renameFO(fromFile, toFile);
    assertTrue(h.waitForFilesToRefresh());

    // test
    assertFalse(fromFile.exists());
    assertTrue(toFile.exists());

    assertEquals(EnumSet.of(Status.UPTODATE), getCache().getStatus(fromFile).getStatus());
    assertEquals(EnumSet.of(Status.NEW_INDEX_WORKING_TREE, Status.NEW_HEAD_WORKING_TREE), getCache().getStatus(toFile).getStatus());
}
 

import java.util.HashSet; //導入依賴的package包/類
/**
 * testGenerateCandidates
 */
public void testGenerateCandidates() throws Exception {
    Table catalog_tbl = this.getTable(TM1Constants.TABLENAME_SUBSCRIBER);
    Column target_col = this.getColumn(catalog_tbl, "S_ID");
    
    Collection<VerticalPartitionColumn> candidates = VerticalPartitionerUtil.generateCandidates(target_col, info.stats);
    assertNotNull(candidates);
    assertFalse(candidates.isEmpty());
    VerticalPartitionColumn vpc = CollectionUtil.first(candidates);
    assertNotNull(vpc);

    Collection<Column> expected_cols = CollectionUtil.addAll(new HashSet<Column>(), this.getColumn(catalog_tbl, "SUB_NBR"),
                                                                                    this.getColumn(catalog_tbl, "S_ID"));
    assertEquals(expected_cols.size(), vpc.getVerticalMultiColumn().size());
    assertTrue(expected_cols + " <=> " + vpc.getVerticalPartitionColumns(), expected_cols.containsAll(vpc.getVerticalPartitionColumns()));
    
    Collection<Statement> expected_stmts = new HashSet<Statement>();
    expected_stmts.add(this.getStatement(this.getProcedure(DeleteCallForwarding.class), "query"));
    expected_stmts.add(this.getStatement(this.getProcedure(InsertCallForwarding.class), "query1"));
    expected_stmts.add(this.getStatement(this.getProcedure(UpdateLocation.class), "getSubscriber"));
    assertEquals(expected_stmts.size(), vpc.getOptimizedQueries().size());
    assert(expected_stmts.containsAll(vpc.getOptimizedQueries()));
}
 

import java.util.HashSet; //導入依賴的package包/類
/**
 * Parse string according given class
 * @param string Source string
 * @param clazz Target class
 * @return Parsed class object
 */
private static Object parse(String string, Class clazz) throws IOException {
    if (Integer.class.isAssignableFrom(clazz)) {
        return (int) Double.parseDouble(string);
    }
    if (Boolean.class.isAssignableFrom(clazz)) {
        return Boolean.parseBoolean(string);
    }
    if (Double.class.isAssignableFrom(clazz)) {
        return Double.parseDouble(string);
    }
    if (HashSet.class.isAssignableFrom(clazz)) {
        return Utils.toHashSet(Utils.tokenize(string, ","));
    }
    if (File.class.isAssignableFrom(clazz)) {
        return new File(string);
    }
    throw new IOException("Unknown instance: " + clazz.getSimpleName());
}
 

import java.util.HashSet; //導入依賴的package包/類
public void testDeleteA_RenameB2A_DO_129805() throws Exception {
    // init
    File fileA = new File(repositoryLocation, "A");
    fileA.createNewFile();
    File fileB = new File(repositoryLocation, "B");
    fileB.createNewFile();
    add();
    commit();

    // delete A
    h.setFilesToRefresh(new HashSet<File>(Arrays.asList(fileA, fileB)));
    delete(fileA);
    // rename B to A
    renameDO(fileB, fileA);
    assertTrue(h.waitForFilesToRefresh());

    // test
    assertFalse(fileB.exists());
    assertTrue(fileA.exists());

    assertEquals(EnumSet.of(Status.UPTODATE), getCache().getStatus(fileA).getStatus());
}
 

import java.util.HashSet; //導入依賴的package包/類
private static Set<Object> getFactories(String serviceName) {
    HashSet<Object> result = new HashSet<Object>();

    if ((serviceName == null) || (serviceName.length() == 0) ||
        (serviceName.endsWith("."))) {
        return result;
    }

    Provider[] provs = Security.getProviders();
    Object fac;

    for (Provider p : provs) {

        Iterator<Service> iter = p.getServices().iterator();
        while (iter.hasNext()) {
            Service s = iter.next();
            if (s.getType().equals(serviceName)) {
                try {
                    fac = loadFactory(s);
                    if (fac != null) {
                        result.add(fac);
                    }
                } catch (Exception ignore) {
                }
            }
        }
    }
    return Collections.unmodifiableSet(result);
}
 

import java.util.HashSet; //導入依賴的package包/類
private void doConsume() {
	try {
		consumer.seekToEnd(new HashSet<TopicPartition>());
		while (!stopped) {
			final ConsumerRecords<String, byte[]> records = consumer.poll(10);
			for (final ConsumerRecord<String, byte[]> record : records) {
				recordSet.add(record);
				LOG.info("Reading record: topic = {}, partition = {}, offset = {}, key = {}, value = {}", record.topic(), record.partition(),
						record.offset(), record.key(), new String(record.value()));
			}
			consumer.commitSync();
			Thread.sleep(10);
		}
	} catch (final InterruptedException e) {
		LOG.error("interrupted", e);
	} finally {
		consumer.close();
		consumer.unsubscribe();
		consumer = null;
	}
}
 

import java.util.HashSet; //導入依賴的package包/類
public static void registerTopic(ChannelEntity chn, String topic) {
  if (chn == null) {
    return;
  }
  if (topic == null) {
    return;
  }

  Set<String> topicSet = channelTopicMap.get(chn);
  if (topicSet == null) {
    topicSet = new HashSet<String>(1);
  }
  topicSet.add(topic);

  channelTopicMap.put(chn, topicSet);

  Set<ChannelEntity> channelSet = topicChannelMap.get(topic);
  if (channelSet == null) {
    channelSet = new HashSet<ChannelEntity>(1);
  }
  channelSet.add(chn);

  topicChannelMap.put(topic, channelSet);
}
 

import java.util.HashSet; //導入依賴的package包/類
private void initDebuggerManagerListeners () {
    synchronized (loadedListenersLock) {
        if (loadedListeners == null) {
            loadedListeners = new HashSet<LazyDebuggerManagerListener>();
            listenersLookupList = lookup.lookup (null, LazyDebuggerManagerListener.class);
            refreshDebuggerManagerListeners(listenersLookupList);
            ((Customizer) listenersLookupList).addPropertyChangeListener(new PropertyChangeListener() {

                public void propertyChange(PropertyChangeEvent evt) {
                    refreshDebuggerManagerListeners((List<? extends LazyDebuggerManagerListener>) evt.getSource());
                }
            });
        }

    }
}
 

import java.util.HashSet; //導入依賴的package包/類
/**
 * Apply Bundle matched properties.
 */
public static CloudIotOptions reconfigure(CloudIotOptions original, Bundle bundle) {
    try {
        if (Log.isLoggable(TAG, Log.INFO)) {
            HashSet<String> valid = new HashSet<>(Arrays.asList(new String[] {"project_id",
                    "registry_id", "device_id","cloud_region", "mqtt_bridge_hostname",
                    "mqtt_bridge_port"}));
            valid.retainAll(bundle.keySet());
            Log.i(TAG, "Configuring options using the following intent extras: " + valid);
        }

        CloudIotOptions result = new CloudIotOptions();
        result.projectId = bundle.getString("project_id", original.projectId);
        result.registryId = bundle.getString("registry_id", original.registryId);
        result.deviceId = bundle.getString("device_id", original.deviceId);
        result.cloudRegion = bundle.getString("cloud_region", original.cloudRegion);
        result.bridgeHostname = bundle.getString("mqtt_bridge_hostname",
                original.bridgeHostname);
        result.bridgePort = (short) bundle.getInt("mqtt_bridge_port", original.bridgePort);
        return result;
    } catch (Exception e) {
        throw new IllegalArgumentException("While processing configuration options", e);
    }
}