本文整理了Java中com.google.api.client.util.Preconditions类的一些代码示例，展示了Preconditions类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Preconditions类的具体详情如下：
包路径：com.google.api.client.util.Preconditions
类名称：Preconditions

Preconditions介绍

暂无

代码示例

代码示例来源：origin: pentaho/pentaho-kettle

public final DataStore<V> set( String key, V value ) throws IOException {
 Preconditions.checkNotNull( key );
 Preconditions.checkNotNull( value );
 this.lock.lock();
 try {
  this.keyValueMap.put( key, IOUtils.serialize( value ) );
  this.save();
 } finally {
  this.lock.unlock();
 }
 return this;
}

代码示例来源：origin: googleapis/google-cloud-java

static <T extends Option.OptionType> Map<Option.OptionType, ?> optionMap(Option... options) {
  Map<Option.OptionType, Object> optionMap = Maps.newHashMap();
  for (Option option : options) {
   Object prev = optionMap.put(option.getOptionType(), option.getValue());
   checkArgument(prev == null, "Duplicate option %s", option);
  }
  return optionMap;
 }
}

代码示例来源：origin: googleads/aw-reporting

public void setBackoffInterval(Integer backoffInterval) {
 Preconditions.checkNotNull(backoffInterval, "backoffInterval cannot be null.");
 Preconditions.checkArgument(backoffInterval >= 0, "backoffInterval must be non-negative.");
 this.backoffInterval = backoffInterval.intValue();
}

代码示例来源：origin: com.google.cloud.genomics/google-genomics-dataflow

public static GraphResult fromString(String tsv) {
 Preconditions.checkNotNull(tsv);
 String[] tokens = tsv.split("[\\s\t]+");
 Preconditions.checkState(3 == tokens.length,
   "Expected three values in serialized GraphResult but found %d", tokens.length);
 return new GraphResult(tokens[0],
   Double.parseDouble(tokens[1]),
   Double.parseDouble(tokens[2]));
}

代码示例来源：origin: com.google.cloud.datastore/datastore-v1-proto-client

public synchronized File getProjectDirectory() {
 checkState(state == State.STARTED);
 return projectDirectory;
}

代码示例来源：origin: googleads/aw-reporting

/**
 * Factory method to create a DateRange instance.
 * @param dateRange the date range string, either in "yyyyMMdd,yyyyMMdd" format, or some
 *                  ReportDefinitionDateRangeType enum value (such as "LAST_7_DAYS")
 * @return the DateRange object
 */
public static DateRangeAndType fromString(final String dateRange) {
 Preconditions.checkNotNull(dateRange, "DateRange cannot be null.");
 Preconditions.checkArgument(!dateRange.isEmpty(), "DateRange cannot be empty.");
 return dateRange.contains(",") ? parseCustomFormat(dateRange) : parseEnumFormat(dateRange);
}

代码示例来源：origin: com.google.api-client/google-api-client

@Override
public Builder setScopes(Collection<String> scopes) {
 Preconditions.checkState(!scopes.isEmpty());
 return (Builder) super.setScopes(scopes);
}

代码示例来源：origin: googleapis/google-cloud-java

public ModifyAckDeadline(String ackId, long seconds) {
 Preconditions.checkNotNull(ackId);
 this.ackId = ackId;
 this.seconds = seconds;
}

代码示例来源：origin: GoogleCloudPlatform/java-docs-samples

/**
  * A command-line handler to display the bucket passed in as an argument.
  *
  * @param args the array of command-line arguments.
  */
 public static void main(final String[] args) {
  try {
   // Check for valid setup.
   Preconditions.checkArgument(
     args.length == 1,
     "Please pass in the Google Cloud Storage bucket name to display");
   String bucketName = args[0];

   String content = listBucket(bucketName);

   prettyPrintXml(bucketName, content);
   System.exit(0);

  } catch (IOException e) {
   System.err.println(e.getMessage());
  } catch (Throwable t) {
   t.printStackTrace();
  }
  System.exit(1);
 }
}

代码示例来源：origin: com.google.oauth-client/google-oauth-client-appengine

/**
  * Return the user id for the currently logged in user.
  */
 static final String getUserId() {
  UserService userService = UserServiceFactory.getUserService();
  User loggedIn = userService.getCurrentUser();
  Preconditions.checkState(loggedIn != null, "This servlet requires the user to be logged in.");
  return loggedIn.getUserId();
 }
}

代码示例来源：origin: google/data-transfer-project

@Override
 public ReservedWorker handle(GetReservedWorker workerRequest) {
  String id = workerRequest.getId();
  UUID jobId = decodeJobId(id);

  PortabilityJob job = jobStore.findJob(jobId);
  Preconditions.checkNotNull(
    job, "Couldn't lookup worker for job " + id + " because the job doesn't exist");
  if (job.jobAuthorization().state() != CREDS_ENCRYPTION_KEY_GENERATED) {
   monitor.debug(
     () -> format("Job %s has not entered state CREDS_ENCRYPTION_KEY_GENERATED yet", jobId));
   return new ReservedWorker(null);
  }
  monitor.debug(
    () ->
      format(
        "Got job %s in state CREDS_ENCRYPTION_KEY_GENERATED, returning its public key",
        jobId));
  return new ReservedWorker(job.jobAuthorization().authPublicKey());
 }
}

代码示例来源：origin: google/google-api-java-client-samples

/**
  * Lists all DFA user profiles associated with your Google Account.
  * 
  * @param reporting Dfareporting service object on which to run the requests.
  * @return the list of user profiles received.
  * @throws Exception
  */
 public static UserProfileList list(Dfareporting reporting) throws Exception {
  System.out.println("=================================================================");
  System.out.println("Listing all DFA user profiles");
  System.out.println("=================================================================");

  // Retrieve DFA user profiles and display them. User profiles do not support
  // paging.
  UserProfileList profiles = reporting.userProfiles().list().execute();
  Preconditions.checkArgument(
    profiles.getItems() != null && !profiles.getItems().isEmpty(), "No profiles found");
  for (UserProfile userProfile : profiles.getItems()) {
   System.out.printf("User profile with ID \"%s\" and name \"%s\" was found.%n",
     userProfile.getProfileId(), userProfile.getUserName());
  }

  System.out.println();
  return profiles;
 }
}

代码示例来源：origin: com.google.api-client/google-api-client

/**
 * Sets the notification channel UUID provided by the client in the watch request.
 *
 * <p>
 * Overriding is only supported for the purpose of calling the super implementation and changing
 * the return type, but nothing else.
 * </p>
 */
public AbstractNotification setChannelId(String channelId) {
 this.channelId = Preconditions.checkNotNull(channelId);
 return this;
}

代码示例来源：origin: com.google.api-client/google-api-client

@Override
public Builder setClientAuthentication(HttpExecuteInterceptor clientAuthentication) {
 Preconditions.checkArgument(clientAuthentication == null);
 return this;
}

代码示例来源：origin: com.google.api-client/google-api-client

/**
 * Returns an instance of a new builder.
 *
 * @param transport HTTP transport
 * @param jsonFactory JSON factory
 */
public Builder(HttpTransport transport, JsonFactory jsonFactory) {
 this.transport = Preconditions.checkNotNull(transport);
 this.jsonFactory = Preconditions.checkNotNull(jsonFactory);
}

代码示例来源：origin: com.google.api-client/google-api-client

/** Returns the details for either installed or web applications. */
public Details getDetails() {
 // that web or installed, but not both
 Preconditions.checkArgument((web == null) != (installed == null));
 return web == null ? installed : web;
}

代码示例来源：origin: com.google.api-client/google-api-client-android

/**
 * @param accountManager account manager
 */
public GoogleAccountManager(AccountManager accountManager) {
 this.manager = Preconditions.checkNotNull(accountManager);
}

代码示例来源：origin: com.google.api-client/google-api-client

/**
 * Sets the maximum size of individual chunks that will get downloaded by single HTTP requests.
 * The default value is {@link #MAXIMUM_CHUNK_SIZE}.
 *
 * <p>
 * The maximum allowable value is {@link #MAXIMUM_CHUNK_SIZE}.
 * </p>
 */
public MediaHttpDownloader setChunkSize(int chunkSize) {
 Preconditions.checkArgument(chunkSize > 0 && chunkSize <= MAXIMUM_CHUNK_SIZE);
 this.chunkSize = chunkSize;
 return this;
}

代码示例来源：origin: com.google.api-client/google-api-client

/**
 * Sets the {@link ResourceStates resource state}.
 *
 * <p>
 * Overriding is only supported for the purpose of calling the super implementation and changing
 * the return type, but nothing else.
 * </p>
 */
public AbstractNotification setResourceState(String resourceState) {
 this.resourceState = Preconditions.checkNotNull(resourceState);
 return this;
}

代码示例来源：origin: com.google.api-client/google-api-client

/**
 * Sets the message number (a monotonically increasing value starting with 1).
 *
 * <p>
 * Overriding is only supported for the purpose of calling the super implementation and changing
 * the return type, but nothing else.
 * </p>
 */
public AbstractNotification setMessageNumber(long messageNumber) {
 Preconditions.checkArgument(messageNumber >= 1);
 this.messageNumber = messageNumber;
 return this;
}