I have below codes as shown below
#Repository
public interface SaleRepository extends GraphRepository<Sale> {
#Query("MATCH (n:Sale) WHERE n.userId = {userId} RETURN n")
Iterable<Sale> getSaleByUserId(#Param("userId") String userId);
}
Sale.JAva
#NodeEntity
public class Sale extends Entity implements Serializable{
private Date createdDate;
public Date getCreatedDate() {
return createdDate;
}
public void setCreatedDate(Date createdDate) {
this.createdDate = createdDate;
}
}
SaleData.java
#RequestMapping(path = "/connect/{userId}", method = RequestMethod.POST, consumes = "application/json", produces = "application/json")
public String SaleData(#PathVariable final String userId)
{
Sale saleObject = null;
Iterable<Sale> saleData = SaleRepository.getSaleByUserId(String.valueOf(userPairInfo.getUserId()));
if(saleData .iterator().hasNext())
{
saleObject= saleData .iterator().next();
}
return "{\"userId\":\""+saleObject.getCreatedDate()+"\"}"; // on service call this gives me above error
}
if i call the service i get error,
java.lang.NoSuchMethodError: com.project.graphdb.neoj.domain.Sale.getCreatedDate()Ljava/util/Date
Its mainly tell because of sale.java file what else i am missing here?
Please help on this i am new to java and Neo4j
Ï think you are using java.util.Date and not java.sql.Date or you might need to recompile your source code.
Related
I am the beginner of writing unit tests for asp.net. I created a simple project and try to start my testing journey. However, I met two errors with the same issue:"object reference not set to instance of an object" The first place is in the home controller as below:
public class HomeController : Controller
{
private readonly ILogger<HomeController> _logger;
public HomeController(ILogger<HomeController> logger)
{
_logger = logger;
}
[ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
public IActionResult Error()
{
return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
}
Here is my test method:
public class HomeControllerUnitTests
{
ILogger<HomeController> _logger;
[Fact]
public void Error_ActionExecutes_ReturnsAViewResult()
{
// Arrange
var homeController = new HomeController(_logger);
// Act
var result = homeController.Error() as ViewResult;
// Assert
Assert.Null(result.ViewData.Model);
}
}
The second place is in the Movie Controller:
public class MoviesController : Controller
{
private readonly MvcMovieContext _context;
public MoviesController(MvcMovieContext context)
{
_context = context;
}
// GET: Movies
public async Task<IActionResult> Index()
{
return View(await _context.Movie.ToListAsync());
}
}
My test method is as below:
public class MoviesControllerUnitTests
{
private Mock<MvcMovieContext> _mock;
[Fact]
public async Task Index_ActionExecutes_ReturnsAViewResult()
{
// Arrange
MoviesController controller = new MoviesController(_mock.Object);
// Act
var result = await controller.Index() as Task<ViewResult>;
// Assert
Assert.IsType<ViewResult>(result);
}
}
Please help me and thanks in advance.
Below the Object reference not set to an instance of an object line there should be an indication about which file and line the error occurred, which helps you to determine which variables are null (but you could also use the debugger).
For the MoviesControllerUnitTests this probably is the _mock variable, so be sure to initialize it as shown in the docs, e.g.:
private Mock<MvcMovieContext> _mock = new Mock<MvcMovieContext>();
For the HomeControllerUnitTests you might need to mock the Activity or set a HttpContext (see e.g. this question).
How to fetch data from corda Custom tables?
my sample code is as follows :-
Api layer -- getIous() method
{
Field attributeValue=IOUSchemaV1.PersistentIOU.class.getDeclaredField("value");
CriteriaExpression currencyIndex = Builder.equal(attributeValue, "12");
QueryCriteria.VaultCustomQueryCriteria criteria = new
QueryCriteria.VaultCustomQueryCriteria(currencyIndex);
vaultStates = services.vaultQueryByCriteria(criteria,IOUState.class);
}
In ExamplePlugin I added below code for schema registration
public class ExamplePlugin extends CordaPluginRegistry implements
WebServerPluginRegistry
{
#NotNull
#Override
public Set<MappedSchema> getRequiredSchemas()
{
Set<MappedSchema> requiredSchemas = new HashSet<>();
requiredSchemas.add(new IOUSchemaV1());
return requiredSchemas;
}
}
My Schema classes are ---
public final class IOUSchema {
}
#CordaSerializable
public class IOUSchemaV1 extends MappedSchema
{
public IOUSchemaV1() {
super(IOUSchema.class, 1, ImmutableList.of(PersistentIOU.class));
}
#Entity
#Table(name = "iou_states")
public static class PersistentIOU extends PersistentState {
#Column(name = "sender_name") private final String senderName;
#Column(name = "recipient_name") private final String recipientName;
#Column(name = "value") private final int value;
public PersistentIOU(String senderName, String recipientName, int value) {
this.senderName = senderName;
this.recipientName = recipientName;
this.value = value;
}
public String getSenderName() {
return senderName;
}
public String getRecipientName() {
return recipientName;
}
public int getValue() {
return value;
}
}
}
my state has :-
public class IOUState implements LinearState, QueryableState
{
--- some code goes here and below methods as well.---
#Override
public PersistentState generateMappedObject(MappedSchema schema) {
if (schema instanceof IOUSchemaV1) {
return new IOUSchemaV1.PersistentIOU(
this.sender.getName().toString(),
this.recipient.getName().toString(),
this.iou.getValue());
} else {
throw new IllegalArgumentException("Unrecognised schema $schema");
}
}
#Override
public Iterable<MappedSchema> supportedSchemas() {
return ImmutableList.of(new IOUSchemaV1());
}
}
But all the time i am getting below exception.
Caused by: net.corda.core.node.services.VaultQueryException:
Please register the entity 'com.example.schema.IOUSchemaV1' class in your CorDapp's CordaPluginRegistry configuration (requiredSchemas attribute)
and ensure you have declared (in supportedSchemas()) and mapped (in generateMappedObject())
the schema in the associated contract state's QueryableState interface implementation.
Can anyone please help to resolve this.
Try deleting implements WebServerPluginRegistry from your plugin declaration.
I'm using Spring-MVC, Spring-data-jpa, jackson on a Jhipster project.
I managed to use the #JsonView annotation on an object and it works well when the method in the rest controller return a type ResponseEntity<List<MyObject>> but I can't make it work when the method return type is ResponseEntity<Page<MyObject>>.
I've tried to set MapperFeature.DEFAULT_VIEW_INCLUSION to true (which default is false). When I do it, all attributes are serialized. But filtering through #JsonView does not work anymore.
I can't modify the Page object because it's a Spring-data object.
I'm looking for a way to tell jackson to include all attributes of the Page object.
Here is my code:
My entity:
#Entity
#Table(name = "T_REGION")
public class Region implements Serializable {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
#Column(name = "code", nullable = false)
private Integer code;
#Column(name = "name", length = 60, nullable = false)
#JsonView(View.Summary.class)
private String name;
// Getters and setters
}
My rest controller:
#RestController
#RequestMapping("/api")
public class RegionResource {
#RequestMapping(value = "/regionsearch1",
method = RequestMethod.GET,
produces = MediaType.APPLICATION_JSON_VALUE)
#JsonView(View.Summary.class)
public ResponseEntity<Page<Region>> findAll1(
#RequestParam(value = "page" , required = false) Integer offset,
#RequestParam(value = "per_page", required = false) Integer limit,
Sort sort)
throws URISyntaxException {
Pageable pageRequest = PaginationUtil.generatePageRequest(offset, limit, sort);
Page<Region> page = regionRepository.findAll(pageRequest);
HttpHeaders headers = PaginationUtil.generatePaginationHttpHeaders(page, "/api/regionsearch1", pageRequest);
return new ResponseEntity<>(page, headers, HttpStatus.OK);
}
#RequestMapping(value = "/regionsearch2",
method = RequestMethod.GET,
produces = MediaType.APPLICATION_JSON_VALUE)
#JsonView(View.Summary.class)
public ResponseEntity<List<Region>> findAll2(
#RequestParam(value = "page" , required = false) Integer offset,
#RequestParam(value = "per_page", required = false) Integer limit,
Sort sort)
throws URISyntaxException {
Pageable pageRequest = PaginationUtil.generatePageRequest(offset, limit, sort);
Page<Region> page = regionRepository.findAll(pageRequest);
HttpHeaders headers = PaginationUtil.generatePaginationHttpHeaders(page, "/api/regionsearch2", pageRequest);
return new ResponseEntity<>(page.getContent(), headers, HttpStatus.OK);
}
}
findAll1 returns:
[
{
"name": "Ile-de-France"
},
{
"name": "Champagne-Ardenne"
},
....
]
findAll2 returns:
{}
The object Page has no #JsonView on its attributes therefore no attributes are serialized.
I can't find a way to tell Jackson to include all Page attributes even when #JsonView is used.
Any ideas ?
Another way to return all page elements is to create your own implementation for the Page interface (including the JsonView you want):
JsonPage
public class JsonPage<T> extends org.springframework.data.domain.PageImpl<T> {
public JsonPage(final List<T> content, final Pageable pageable, final long total) {
super(content, pageable, total);
}
public JsonPage(final List<T> content) {
super(content);
}
public JsonPage(final Page<T> page, final Pageable pageable) {
super(page.getContent(), pageable, page.getTotalElements());
}
#JsonView(JsonViews.UiView.class)
public int getTotalPages() {
return super.getTotalPages();
}
#JsonView(JsonViews.UiView.class)
public long getTotalElements() {
return super.getTotalElements();
}
#JsonView(JsonViews.UiView.class)
public boolean hasNext() {
return super.hasNext();
}
#JsonView(JsonViews.UiView.class)
public boolean isLast() {
return super.isLast();
}
#JsonView(JsonViews.UiView.class)
public boolean hasContent() {
return super.hasContent();
}
#JsonView(JsonViews.UiView.class)
public List<T> getContent() {
return super.getContent();
}
}
Next return this class to the controller layer:
Service
#Override
public Page<User> findAll(final int page) {
PageRequest pr = new PageRequest(page, pageSize, new Sort(Sort.Direction.DESC, "dateCreated"));
return new JsonPage<User>(userRepository.findAll(pr), pr);
}
Controller
#JsonView(JsonViews.UiView.class)
#RequestMapping(method = RequestMethod.GET, value = "{page}")
public Page<User> getUsers(#PathVariable final int page) {
return userService.findAll(page);
}
I have done like this , it's working well
package com.natixis.spring.ws.configuration;
import java.io.IOException;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.domain.Page;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import com.fasterxml.jackson.annotation.JsonInclude.Include;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.MapperFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializerProvider;
#Configuration
public class JacksonAdapter extends WebMvcConfigurerAdapter {
#Bean
public Jackson2ObjectMapperBuilder jacksonBuilder() {
return new Jackson2ObjectMapperBuilder()
.failOnUnknownProperties(false)
.serializationInclusion(Include.NON_EMPTY)
.serializerByType(Page.class, new JsonPageSerializer());
}
public class JsonPageSerializer extends JsonSerializer<Page<?>>{
#Override
public void serialize(Page<?> page, JsonGenerator jsonGen, SerializerProvider serializerProvider) throws IOException, JsonProcessingException {
ObjectMapper om = new ObjectMapper()
.disable(MapperFeature.DEFAULT_VIEW_INCLUSION)
.setSerializationInclusion(Include.NON_EMPTY);
jsonGen.writeStartObject();
jsonGen.writeFieldName("size");
jsonGen.writeNumber(page.getSize());
jsonGen.writeFieldName("number");
jsonGen.writeNumber(page.getNumber());
jsonGen.writeFieldName("totalElements");
jsonGen.writeNumber(page.getTotalElements());
jsonGen.writeFieldName("last");
jsonGen.writeBoolean(page.isLast());
jsonGen.writeFieldName("totalPages");
jsonGen.writeNumber(page.getTotalPages());
jsonGen.writeObjectField("sort", page.getSort());
jsonGen.writeFieldName("first");
jsonGen.writeBoolean(page.isFirst());
jsonGen.writeFieldName("numberOfElements");
jsonGen.writeNumber(page.getNumberOfElements());
jsonGen.writeFieldName("content");
jsonGen.writeRawValue(om.writerWithView(serializerProvider.getActiveView())
.writeValueAsString(page.getContent()));
jsonGen.writeEndObject();
}
}
}
Regards,
Régis LIMARE
I know this is an old question, but you can use something like this for a Page of objects
#Configuration
public class JacksonAdapter implements WebMvcConfigurer {
#Bean
public Jackson2ObjectMapperBuilder jacksonBuilder() {
return new Jackson2ObjectMapperBuilder().failOnUnknownProperties(false).serializerByType(Page.class,
new JsonPageSerializer());
}
public class JsonPageSerializer extends JsonSerializer<Page> {
#Override
public void serialize(Page page, JsonGenerator jsonGen, SerializerProvider serializerProvider)
throws IOException {
ObjectMapper om = new ObjectMapper().disable(MapperFeature.DEFAULT_VIEW_INCLUSION);
jsonGen.writeStartObject();
jsonGen.writeFieldName("size");
jsonGen.writeNumber(page.getSize());
jsonGen.writeFieldName("number");
jsonGen.writeNumber(page.getNumber());
jsonGen.writeFieldName("totalElements");
jsonGen.writeNumber(page.getTotalElements());
jsonGen.writeFieldName("last");
jsonGen.writeBoolean(page.isLast());
jsonGen.writeFieldName("totalPages");
jsonGen.writeNumber(page.getTotalPages());
jsonGen.writeObjectField("sort", page.getSort());
jsonGen.writeFieldName("first");
jsonGen.writeBoolean(page.isFirst());
jsonGen.writeFieldName("numberOfElements");
jsonGen.writeNumber(page.getNumberOfElements());
jsonGen.writeFieldName("content");
jsonGen.writeRawValue(
om.writerWithView(serializerProvider.getActiveView()).writeValueAsString(page.getContent()));
jsonGen.writeEndObject();
}
}
}
I've encountered the same problem and I solved it by setting MapperFeature.DEFAULT_VIEW_INCLUSION to true, but you should annotate all fields in classes where you want to apply your view with JsonView or JsonIgnore annotation so they wouldn't be included by default in json.
I would like to write something like :
#Autowired
private SpringTemplateEngine engine;
....
// Thymeleaf Context
WebContext thymeleafContext = new WebContext(request, response, request.getServletContext(), locale);
// cached html of a thymeleaf template file
String cachedHtml=....
// process the cached html
String html=engine.process(cachedHtml, thymeleafContext);
By default, the [process] method can't do that. I can understand from the docs that I need a special Template Resolver :
In order to execute templates, the process(String, IContext) method will be used:
final String result = templateEngine.process("mytemplate", ctx);
The "mytemplate" String argument is the template name, and it will relate to the physical/logical location of the template itself in a way configured at the template resolver/s.
Does anyone know how to solve my problem ?
The goal is to cache the Thymeleaf templates (files) in strings and then process theses strings rather than the files.
The solution we ended up using consisted of a new IResourceResolver with a custom Context rather than a custom TemplateResolver. We chose this because we still wanted to use classpath scanning in most cases, but occasionally had dynamic content.
The following shows how we did it:
public class StringAndClassLoaderResourceResolver implements IResourceResolver {
public StringAndClassLoaderResourceResolver() {
super();
}
public String getName() {
return getClass().getName().toUpperCase();
}
public InputStream getResourceAsStream(final TemplateProcessingParameters params, final String resourceName) {
Validate.notNull(resourceName, "Resource name cannot be null");
if( StringContext.class.isAssignableFrom( params.getContext().getClass() ) ){
String content = ((StringContext)params.getContext()).getContent();
return IOUtils.toInputStream(content);
}
return ClassLoaderUtils.getClassLoader(ClassLoaderResourceResolver.class).getResourceAsStream(resourceName);
}
public static class StringContext extends Context{
private final String content;
public StringContext(String content) {
this.content = content;
}
public StringContext(String content, Locale locale) {
super(locale);
this.content = content;
}
public StringContext(String content, Locale locale, Map<String, ?> variables) {
super(locale, variables);
this.content = content;
}
public String getContent() {
return content;
}
}
Test Case
public class StringAndClassLoaderResourceResolverTest {
private static SpringTemplateEngine templateEngine;
#BeforeClass
public static void setup(){
TemplateResolver resolver = new TemplateResolver();
resolver.setResourceResolver(new StringAndClassLoaderResourceResolver());
resolver.setPrefix("mail/"); // src/test/resources/mail
resolver.setSuffix(".html");
resolver.setTemplateMode("LEGACYHTML5");
resolver.setCharacterEncoding(CharEncoding.UTF_8);
resolver.setOrder(1);
templateEngine = new SpringTemplateEngine();
templateEngine.setTemplateResolver(resolver);
}
#Test
public void testStringResolution() {
String expected = "<div>dave</div>";
String input = "<div th:text=\"${userName}\">Some Username Here!</div>";
IContext context = new StringAndClassLoaderResourceResolver.StringContext(input);
context.getVariables().put("userName", "dave");
String actual = templateEngine.process("redundant", context);
assertEquals(expected, actual);
}
#Test
public void testClasspathResolution(){
IContext context = new Context();
context.getVariables().put("message", "Hello Thymeleaf!");
String actual = templateEngine.process("dummy", context);
String expected = "<h1>Hello Thymeleaf!</h1>";
assertEquals(expected, actual);
}
}
Dummy template file at src/main/resources/mail/dummy.html
<h1 th:text="${message}">A message will go here!</h1>
Note: We used Apache CommonsIO's IOUtils for converting the String to an InputStream
You can implement your own TemplateResolver and IResourceResolver to work with String.
for simple unit tests:
static class TestResourceResolver implements IResourceResolver {
public String content = "";
#Override
public String getName() {
return "TestTemplateResolver";
}
#Override
public InputStream getResourceAsStream(TemplateProcessingParameters templateProcessingParameters,
String resourceName) {
return new ByteArrayInputStream(content.getBytes());
}
}
or just use org.thymeleaf.templateresolver.StringTemplateResolver in Thymeleaf 3
Yep StringTemplateResolver is the way to go.
public class ReportTemplateEngine {
private static TemplateEngine instance;
private ReportTemplateEngine() {}
public static TemplateEngine getInstance() {
if(instance == null){
synchronized (ReportTemplateEngine.class) {
if(instance == null) {
instance = new TemplateEngine();
StringTemplateResolver templateResolver = new StringTemplateResolver();
templateResolver.setTemplateMode(TemplateMode.HTML);
instance.setTemplateResolver(templateResolver);
}
}
}
return instance;
}
}
I want to know if there is a way to parse json data dynamically into different object by using jackson feature in Spring3.
I have a parent class as below:
public class Recording {
private String id;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
}
And two children:
public class Child1Recording extends Recording {
private String program;
public String getProgram() {
return program;
}
public void setProgram(String program) {
this.program = program;
}
}
public class Child2Recording extends Recording {
private String time;
public String getTime() {
return time;
}
public void setTime(String time) {
this.time = time;
}
}
Controller like this:
#RequestMapping(value = "/init/postCheck.ajax", method = RequestMethod.POST)
public #ResponseBody
String postCheck(#RequestBody Recording recording) {
if (recording instanceof Child2Recording) {
return "\"child2 success\"";
} else if (recording instanceof Child1ecording) {
return "\"child1 success\"";
}
return "\"only parent Recording\"";
}
i have different scenarios to post different json data to the backend, i am wondering if there is a way to make controller works like i said above?
For now, if i send a Child2Recording data, an error occurs when parsing it. I can't get the correct object that i expect.