Java Nullable类代码示例

import com.google.api.server.spi.config.Nullable; //导入依赖的package包/类
@Test
public void testParameterAnnotations() throws Exception {
  @Api
  class Endpoint {
    @SuppressWarnings("unused")
    public void method(@Named("foo") @Nullable @DefaultValue("4") int foo) {}
  }

  ApiConfig config = createConfig(Endpoint.class);
  annotationReader.loadEndpointClass(serviceContext, Endpoint.class, config);
  annotationReader.loadEndpointMethods(serviceContext, Endpoint.class,
      config.getApiClassConfig().getMethods());

  ApiMethodConfig methodConfig =
      Iterables.getOnlyElement(config.getApiClassConfig().getMethods().values());
  ApiParameterConfig parameterConfig =
      Iterables.getOnlyElement(methodConfig.getParameterConfigs());
  validateParameter(parameterConfig, "foo", true, "4", int.class, null, int.class);
}
 

import com.google.api.server.spi.config.Nullable; //导入依赖的package包/类
@Test
public void testParameterAnnotations_javax() throws Exception {
  @Api
  class Endpoint {
    @SuppressWarnings("unused")
    public void method(@javax.inject.Named("foo") @javax.annotation.Nullable int foo) {}
  }

  ApiConfig config = createConfig(Endpoint.class);
  annotationReader.loadEndpointClass(serviceContext, Endpoint.class, config);
  annotationReader.loadEndpointMethods(serviceContext, Endpoint.class,
      config.getApiClassConfig().getMethods());

  ApiMethodConfig methodConfig =
      Iterables.getOnlyElement(config.getApiClassConfig().getMethods().values());
  ApiParameterConfig parameterConfig =
      Iterables.getOnlyElement(methodConfig.getParameterConfigs());
  validateParameter(parameterConfig, "foo", true, null, int.class, null, int.class);
}
 

import com.google.api.server.spi.config.Nullable; //导入依赖的package包/类
@ApiMethod(
        name = "echo",
        path = "echo",
        httpMethod = ApiMethod.HttpMethod.GET)
/* >>>>>>>>>>>>>> this is for testing only
* curl -H "Content-Type: application/json" -X GET -d '{"message":"hello world"}' https://cryptonomica-server.appspot.com/_ah/api/userSearchAndViewAPI/v1/echo
* */
public StringWrapperObject echo(
        @Named("message") String message,
        @Named("n") @Nullable Integer n
) {
    StringWrapperObject stringWrapperObject = new StringWrapperObject();

    if (n != null && n >= 0) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < n; i++) {
            if (i > 0) {
                sb.append(" ");
            }
            sb.append(message);
        }
        stringWrapperObject.setMessage(sb.toString());
    }
    return stringWrapperObject;
}
 

import com.google.api.server.spi.config.Nullable; //导入依赖的package包/类
@ApiMethod(name = "createHIT", path = "createHIT/{surveyId}", httpMethod = HttpMethod.POST)
public StringResponse createHIT(@Named("surveyId") String surveyId,
        @Nullable @Named("production") Boolean production, User user)
        throws InternalServerErrorException, NotFoundException, UnauthorizedException {
    Security.verifyAuthenticatedUser(user);
    try {
        Survey survey = surveyService.get(surveyId);
        if(survey == null) {
            throw new NotFoundException(String.format("Survey %s doesn't exist", surveyId));
        }
        HIT hit = createHITService.createHIT(production, survey);
        return new StringResponse(String.format("created HIT with id: %s", hit.getHITId()));
    } catch (MturkException e) {
        logger.log(Level.SEVERE, "Error creating HIT", e);
        throw new InternalServerErrorException(e.getMessage(), e);
    }
}
 

import com.google.api.server.spi.config.Nullable; //导入依赖的package包/类
@ApiMethod(
	name = "task.list",
	path = "task",
	httpMethod = HttpMethod.GET
)
public List<Task> list(com.google.appengine.api.users.User gUser, @Nullable @Named("project") String projectId, @Nullable @Named("user") String userId) throws OAuthRequestException, UnauthorizedException, EntityNotFoundException {
	userService.ensureEnabled(gUser);
	
	if (projectId != null && userId == null)
		return taskService.list(projectId);
	else if (projectId == null && userId != null) {
		User assignee = userService.get(userId);
		if (assignee == null) throw new EntityNotFoundException("User "+userId+" not found");
		return taskService.listToDoForUser(assignee);
	} else if (projectId == null && userId == null) {
		return taskService.list();
	} else {
		throw new IllegalArgumentException("Please, specify only one of project or user, not both");
	}
		
}
 

import com.google.api.server.spi.config.Nullable; //导入依赖的package包/类
@ApiMethod(
	name = "user.list",
	path = "user",
	httpMethod = HttpMethod.GET
)
public List<User> list(@Named("project") @Nullable String projectId, @Named("q") @Nullable String q, com.google.appengine.api.users.User gUser) throws OAuthRequestException, UnauthorizedException {
	userService.ensureEnabled(gUser);
	
	if (projectId != null && q == null) {
		Project project = ProjectService.getInstance().get(projectId);
		Ref2EntityTransformer<User> t = new Ref2EntityTransformer<User>();
		return t.transformTo(project.getUsers());
	} else if (projectId == null && q != null) {
		return q.equals("") ? UserService.getInstance().list(3) : UserService.getInstance().search(q,3);
	} else {
		return UserService.getInstance().list();
	}
}
 

import com.google.api.server.spi.config.Nullable; //导入依赖的package包/类
@ApiMethod(
    name = "foos.execute0",
    path = "execute0",
    httpMethod = "POST"
)
public Object execute0(@Named("id") String id, @Named("i0") int i0,
    @Named("i1") @Nullable Integer i1, @Named("long0") long long0,
    @Nullable @Named("long1") Long long1, @Named("b0") boolean b0,
    @Nullable @Named("b1") Boolean b1, @Named("f") float f,
    @Nullable @Named("d") Double d) {
  return null;
}
 

import com.google.api.server.spi.config.Nullable; //导入依赖的package包/类
@ApiMethod(name = "listUsers")
public CollectionResponse<Users> listQuote(@Nullable @com.google.api.server.spi.config.Named("cursor") String cursorString,
                                           @Nullable @com.google.api.server.spi.config.Named("count") Integer count) {

    Query<Users> query = ofy().load().type(Users.class);
    if (count != null) query.limit(count);
    if (cursorString != null && cursorString != "") {
        query = query.startAt(Cursor.fromWebSafeString(cursorString));
    }
    List<Users> records = new ArrayList<Users>();
    QueryResultIterator<Users> iterator = query.iterator();
    int num = 0;
    while (iterator.hasNext()) {
        records.add(iterator.next());
        if (count != null) {
            num++;
            if (num == count) break;
        }
    }
    //Find the next cursor
    if (cursorString != null && cursorString != "") {
        Cursor cursor = iterator.getCursor();
        if (cursor != null) {
            cursorString = cursor.toWebSafeString();
        }
    }
    return CollectionResponse.<Users>builder().setItems(records).setNextPageToken(cursorString).build();
}
 

import com.google.api.server.spi.config.Nullable; //导入依赖的package包/类
@ApiMethod(
        name = "orderlist",
        httpMethod = ApiMethod.HttpMethod.GET)
public List<Orders> orderlist(@javax.annotation.Nullable @Named("cursor") String cursor){
    Query<Orders> query = ofy().load().type(Orders.class).limit(1000);
    if (cursor != null)
        query = query.startAt(Cursor.fromWebSafeString(cursor));
    QueryResultIterator<Orders> queryIterator = query.iterator();
    List<Orders> ordersList = new ArrayList<Orders>(1000);
    while (queryIterator.hasNext()) {
        ordersList.add(queryIterator.next());
    }
    return ordersList;
}
 

import com.google.api.server.spi.config.Nullable; //导入依赖的package包/类
@ApiMethod(name = "getHIT", path = "getHIT/{id}", httpMethod = HttpMethod.GET)
public HIT getHIT(@Named("id") String id, @Nullable @Named("production") Boolean production,
        User user) throws BadRequestException, UnauthorizedException {
    Security.verifyAuthenticatedUser(user);
    try {
        return getHITService.getHIT(production, id);
    } catch (MturkException e) {
        throw new BadRequestException(e.getMessage(), e);
    }
}
 

import com.google.api.server.spi.config.Nullable; //导入依赖的package包/类
@ApiMethod(name = "searhHITs", path = "searhHITs", httpMethod = HttpMethod.GET)
public List<HIT> searhHITs(@Nullable @Named("production") Boolean production,
        User user) throws BadRequestException, UnauthorizedException {
    Security.verifyAuthenticatedUser(user);
    try {
        return searchHITsService.searchHITs(production);
    } catch (MturkException e) {
        throw new BadRequestException(e.getMessage(), e);
    }
}
 

import com.google.api.server.spi.config.Nullable; //导入依赖的package包/类
@ApiMethod(name = "disableHIT", path = "disableHIT/{id}", httpMethod = HttpMethod.GET)
public StringResponse disableHIT(@Named("id") String id,
        @Nullable @Named("production") Boolean production, User user)
        throws BadRequestException, UnauthorizedException {
    Security.verifyAuthenticatedUser(user);
    try {
        disableHITService.disableHIT(production, id);
        return new StringResponse(String.format("HIT %s disabled successfully", id));
    } catch (MturkException e) {
        throw new BadRequestException(e.getMessage(), e);
    }
}
 

import com.google.api.server.spi.config.Nullable; //导入依赖的package包/类
@ApiMethod(name = "disposeHIT", path = "disposeHIT/{id}", httpMethod = HttpMethod.GET)
public StringResponse disposeHIT(@Named("id") String id,
        @Nullable @Named("production") Boolean production, User user)
        throws BadRequestException, UnauthorizedException {
    Security.verifyAuthenticatedUser(user);
    try {
        disposeHITService.disposeHIT(production, id);
        return new StringResponse(String.format("HIT %s disposed successfully", id));
    } catch (MturkException e) {
        throw new BadRequestException(e.getMessage(), e);
    }
}
 

import com.google.api.server.spi.config.Nullable; //导入依赖的package包/类
@ApiMethod(name = "getBalance", path = "getBalance", httpMethod = HttpMethod.GET)
public StringResponse getBalance(@Nullable @Named("production") Boolean production,
        User user) throws BadRequestException, UnauthorizedException {
    Security.verifyAuthenticatedUser(user);
    try {
        return new StringResponse(String.format("Your balance: %.2f", getAccountBalanceService.getBalance(production)));
    } catch (MturkException e) {
        throw new BadRequestException(e.getMessage(), e);
    }
}
 

import com.google.api.server.spi.config.Nullable; //导入依赖的package包/类
@ApiMethod(name = "getAssignmentsForHIT", path = "getAssignmentsForHIT/{hitId}", httpMethod = HttpMethod.GET)
public List<Assignment> getAssignmentsForHIT(@Named("hitId") String hitId,
        @Nullable @Named("production") Boolean production, User user) throws BadRequestException,
        UnauthorizedException {
    Security.verifyAuthenticatedUser(user);
    try {
        return getAssignmentsForHITService.getAssignments(production, hitId);
    } catch (MturkException e) {
        throw new BadRequestException(e.getMessage(), e);
    }
}