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How to convert non HAL format to HAL format for nested entity


How to convert String to Long in Kotlin?Enable HAL serialization in Spring Boot for custom controller methodHow to convert List to Map in Kotlin?How to convert a kotlin source file to a java source fileSpring data-rest incorrect resource hrefHow to get a response in HAL-Format with Spring-HateoasCan not get HAL format in Spring Boot MVC unit testHow can I force @AutoConfigureJsonTesters to use HAL format from spring-hateoas?Spring, hal browser and entities relationshipHow to get my resource data from a HAL response?






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;








0















There is a model class "Student" which extends ResourceSupport and contains attributes name(string), age(int), marks(int) and class_leader(Student). I have defined two views , basicview (applied for name and age) and fullview (extends basic view and applied for marks and class_leader). When I call an api to get all students details with full view, I am expecting a full view for each student with basic view for the class leader of that student. To add that facility , I have incorporated JSONSerializer for class_leader attribute and its working as expected. But the only problem which I face now is for the class_leader the Link is not coming in HAL format. If I am not using serializer fullview with proper HAL format is getting displayed.



Have tried annotating controller class with @EnableHypermediaSupport(type = [(EnableHypermediaSupport.HypermediaType.HAL)])



This is the serializer code which I am using.



class StudentSerializer: JsonSerializer<Any>() 

 @Throws(IOException::class, JsonGenerationException::class)
 override fun serialize(value: Any?, jgen: JsonGenerator?, provider: 
 SerializerProvider?) 
 var objectMapper = jacksonObjectMapper()
 objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL)
 //objectMapper.registerModule( Jackson2HalModule())
 objectMapper.writerWithView(Views.BaiscView :: class.java).writeValue(jgen, value)
 



Expected Result:


 "_embedded": 
 "studentList": [
 
 "roll_no":1,
 "name": "student1",
 "age": 10,
 "marks":47,
 "class_leader": 
 "roll_no":2,
 "name": "student2",
 "_links": 
 "self": 
 "href": "http://localhost:9090/class/students/2"
 
 
 , 
 "_links": 
 "studentdetail": 
 "href": "http://localhost:9090/class/students/1"
 
 
 ,
 ...
 ]
 ,
 "_links": 
 "self": 
 "href": "http://localhost:9090/class/students/"
 
 


Actual Result:


 "_embedded": 
 "studentList": [
 
 "roll_no":1,
 "name": "student1",
 "age": 10,
 "marks":47,
 "class_leader": 
 "roll_no":2,
 "name": "student2",
 "links": [
 
 "rel": "self",
 "href":"http://localhost:9090/class/students/2"
 
 ]
 , 
 "_links": 
 "studentdetail": 
 "href": "http://localhost:9090/class/students/1"
 
 
 ,
 ...
 ]
 ,
 "_links": 
 "self": 
 "href": "http://localhost:9090/class/students/"







spring-boot kotlin spring-hateoas







share|improve this question






















  • Got it working : ` override fun serialize(value: Any?, jgen: JsonGenerator?, provider: SerializerProvider?) var objectMapper = jacksonObjectMapper() objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL) objectMapper.registerModule( Jackson2HalModule()) objectMapper.setHandlerInstantiator( Jackson2HalModule.HalHandlerInstantiator(AnnotationRelProvider(), null, null, HalConfiguration())) objectMapper.writerWithView(Views.BaiscView :: class.java).writeValue(jgen, value) `

    – Deepna
    Mar 26 at 7:10


















0















There is a model class "Student" which extends ResourceSupport and contains attributes name(string), age(int), marks(int) and class_leader(Student). I have defined two views , basicview (applied for name and age) and fullview (extends basic view and applied for marks and class_leader). When I call an api to get all students details with full view, I am expecting a full view for each student with basic view for the class leader of that student. To add that facility , I have incorporated JSONSerializer for class_leader attribute and its working as expected. But the only problem which I face now is for the class_leader the Link is not coming in HAL format. If I am not using serializer fullview with proper HAL format is getting displayed.



Have tried annotating controller class with @EnableHypermediaSupport(type = [(EnableHypermediaSupport.HypermediaType.HAL)])



This is the serializer code which I am using.



class StudentSerializer: JsonSerializer<Any>() 

 @Throws(IOException::class, JsonGenerationException::class)
 override fun serialize(value: Any?, jgen: JsonGenerator?, provider: 
 SerializerProvider?) 
 var objectMapper = jacksonObjectMapper()
 objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL)
 //objectMapper.registerModule( Jackson2HalModule())
 objectMapper.writerWithView(Views.BaiscView :: class.java).writeValue(jgen, value)
 



Expected Result:


 "_embedded": 
 "studentList": [
 
 "roll_no":1,
 "name": "student1",
 "age": 10,
 "marks":47,
 "class_leader": 
 "roll_no":2,
 "name": "student2",
 "_links": 
 "self": 
 "href": "http://localhost:9090/class/students/2"
 
 
 , 
 "_links": 
 "studentdetail": 
 "href": "http://localhost:9090/class/students/1"
 
 
 ,
 ...
 ]
 ,
 "_links": 
 "self": 
 "href": "http://localhost:9090/class/students/"
 
 


Actual Result:


 "_embedded": 
 "studentList": [
 
 "roll_no":1,
 "name": "student1",
 "age": 10,
 "marks":47,
 "class_leader": 
 "roll_no":2,
 "name": "student2",
 "links": [
 
 "rel": "self",
 "href":"http://localhost:9090/class/students/2"
 
 ]
 , 
 "_links": 
 "studentdetail": 
 "href": "http://localhost:9090/class/students/1"
 
 
 ,
 ...
 ]
 ,
 "_links": 
 "self": 
 "href": "http://localhost:9090/class/students/"







spring-boot kotlin spring-hateoas







share|improve this question






















  • Got it working : ` override fun serialize(value: Any?, jgen: JsonGenerator?, provider: SerializerProvider?) var objectMapper = jacksonObjectMapper() objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL) objectMapper.registerModule( Jackson2HalModule()) objectMapper.setHandlerInstantiator( Jackson2HalModule.HalHandlerInstantiator(AnnotationRelProvider(), null, null, HalConfiguration())) objectMapper.writerWithView(Views.BaiscView :: class.java).writeValue(jgen, value) `

    – Deepna
    Mar 26 at 7:10














0












0








0








There is a model class "Student" which extends ResourceSupport and contains attributes name(string), age(int), marks(int) and class_leader(Student). I have defined two views , basicview (applied for name and age) and fullview (extends basic view and applied for marks and class_leader). When I call an api to get all students details with full view, I am expecting a full view for each student with basic view for the class leader of that student. To add that facility , I have incorporated JSONSerializer for class_leader attribute and its working as expected. But the only problem which I face now is for the class_leader the Link is not coming in HAL format. If I am not using serializer fullview with proper HAL format is getting displayed.



Have tried annotating controller class with @EnableHypermediaSupport(type = [(EnableHypermediaSupport.HypermediaType.HAL)])



This is the serializer code which I am using.



class StudentSerializer: JsonSerializer<Any>() 

 @Throws(IOException::class, JsonGenerationException::class)
 override fun serialize(value: Any?, jgen: JsonGenerator?, provider: 
 SerializerProvider?) 
 var objectMapper = jacksonObjectMapper()
 objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL)
 //objectMapper.registerModule( Jackson2HalModule())
 objectMapper.writerWithView(Views.BaiscView :: class.java).writeValue(jgen, value)
 



Expected Result:


 "_embedded": 
 "studentList": [
 
 "roll_no":1,
 "name": "student1",
 "age": 10,
 "marks":47,
 "class_leader": 
 "roll_no":2,
 "name": "student2",
 "_links": 
 "self": 
 "href": "http://localhost:9090/class/students/2"
 
 
 , 
 "_links": 
 "studentdetail": 
 "href": "http://localhost:9090/class/students/1"
 
 
 ,
 ...
 ]
 ,
 "_links": 
 "self": 
 "href": "http://localhost:9090/class/students/"
 
 


Actual Result:


 "_embedded": 
 "studentList": [
 
 "roll_no":1,
 "name": "student1",
 "age": 10,
 "marks":47,
 "class_leader": 
 "roll_no":2,
 "name": "student2",
 "links": [
 
 "rel": "self",
 "href":"http://localhost:9090/class/students/2"
 
 ]
 , 
 "_links": 
 "studentdetail": 
 "href": "http://localhost:9090/class/students/1"
 
 
 ,
 ...
 ]
 ,
 "_links": 
 "self": 
 "href": "http://localhost:9090/class/students/"







spring-boot kotlin spring-hateoas







share|improve this question














There is a model class "Student" which extends ResourceSupport and contains attributes name(string), age(int), marks(int) and class_leader(Student). I have defined two views , basicview (applied for name and age) and fullview (extends basic view and applied for marks and class_leader). When I call an api to get all students details with full view, I am expecting a full view for each student with basic view for the class leader of that student. To add that facility , I have incorporated JSONSerializer for class_leader attribute and its working as expected. But the only problem which I face now is for the class_leader the Link is not coming in HAL format. If I am not using serializer fullview with proper HAL format is getting displayed.



Have tried annotating controller class with @EnableHypermediaSupport(type = [(EnableHypermediaSupport.HypermediaType.HAL)])



This is the serializer code which I am using.



class StudentSerializer: JsonSerializer<Any>() 

 @Throws(IOException::class, JsonGenerationException::class)
 override fun serialize(value: Any?, jgen: JsonGenerator?, provider: 
 SerializerProvider?) 
 var objectMapper = jacksonObjectMapper()
 objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL)
 //objectMapper.registerModule( Jackson2HalModule())
 objectMapper.writerWithView(Views.BaiscView :: class.java).writeValue(jgen, value)
 



Expected Result:


 "_embedded": 
 "studentList": [
 
 "roll_no":1,
 "name": "student1",
 "age": 10,
 "marks":47,
 "class_leader": 
 "roll_no":2,
 "name": "student2",
 "_links": 
 "self": 
 "href": "http://localhost:9090/class/students/2"
 
 
 , 
 "_links": 
 "studentdetail": 
 "href": "http://localhost:9090/class/students/1"
 
 
 ,
 ...
 ]
 ,
 "_links": 
 "self": 
 "href": "http://localhost:9090/class/students/"
 
 


Actual Result:


 "_embedded": 
 "studentList": [
 
 "roll_no":1,
 "name": "student1",
 "age": 10,
 "marks":47,
 "class_leader": 
 "roll_no":2,
 "name": "student2",
 "links": [
 
 "rel": "self",
 "href":"http://localhost:9090/class/students/2"
 
 ]
 , 
 "_links": 
 "studentdetail": 
 "href": "http://localhost:9090/class/students/1"
 
 
 ,
 ...
 ]
 ,
 "_links": 
 "self": 
 "href": "http://localhost:9090/class/students/"







spring-boot kotlin spring-hateoas




spring-boot kotlin spring-hateoas






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Mar 24 at 6:53









DeepnaDeepna

301




301












  • Got it working : ` override fun serialize(value: Any?, jgen: JsonGenerator?, provider: SerializerProvider?) var objectMapper = jacksonObjectMapper() objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL) objectMapper.registerModule( Jackson2HalModule()) objectMapper.setHandlerInstantiator( Jackson2HalModule.HalHandlerInstantiator(AnnotationRelProvider(), null, null, HalConfiguration())) objectMapper.writerWithView(Views.BaiscView :: class.java).writeValue(jgen, value) `

    – Deepna
    Mar 26 at 7:10


















  • Got it working : ` override fun serialize(value: Any?, jgen: JsonGenerator?, provider: SerializerProvider?) var objectMapper = jacksonObjectMapper() objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL) objectMapper.registerModule( Jackson2HalModule()) objectMapper.setHandlerInstantiator( Jackson2HalModule.HalHandlerInstantiator(AnnotationRelProvider(), null, null, HalConfiguration())) objectMapper.writerWithView(Views.BaiscView :: class.java).writeValue(jgen, value) `

    – Deepna
    Mar 26 at 7:10

















Got it working : ` override fun serialize(value: Any?, jgen: JsonGenerator?, provider: SerializerProvider?) var objectMapper = jacksonObjectMapper() objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL) objectMapper.registerModule( Jackson2HalModule()) objectMapper.setHandlerInstantiator( Jackson2HalModule.HalHandlerInstantiator(AnnotationRelProvider(), null, null, HalConfiguration())) objectMapper.writerWithView(Views.BaiscView :: class.java).writeValue(jgen, value) `

– Deepna
Mar 26 at 7:10






Got it working : ` override fun serialize(value: Any?, jgen: JsonGenerator?, provider: SerializerProvider?) var objectMapper = jacksonObjectMapper() objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL) objectMapper.registerModule( Jackson2HalModule()) objectMapper.setHandlerInstantiator( Jackson2HalModule.HalHandlerInstantiator(AnnotationRelProvider(), null, null, HalConfiguration())) objectMapper.writerWithView(Views.BaiscView :: class.java).writeValue(jgen, value) `

– Deepna
Mar 26 at 7:10













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