Using PagedResourcesAssembler with List content












0















I'm using Spring Boot 2, Springa Data REST, Spring HATEOAS.
I've a particular @RepositoryRestController in which I need to return a paged result of Strings. So I've not objects but a list of String.



This is how my controller looks like:



@RepositoryRestController
@PreAuthorize("isAuthenticated()")
public class FrameController {
@PostMapping(path = "/frames/{property}/groupBy")
public ResponseEntity<?> search(@PathVariable("property") String property, @RequestBody(required = true) List<Filter> filters, Pageable pageable, Locale locale,
PersistentEntityResourceAssembler resourceAssembler) {
Page<String> pageResult = frameService.groupByProperty(property, filters, pageable);

return ResponseEntity.ok(pagedResourcesAssembler.toResource(pageResult));
}


The response looks like this:



{
"_embedded": {
"strings": [
{
"content": "BA0001"
},
{
"content": "BA0002"
},
{
"content": "BA0003"
},
{
"content": "BA0004"
},
{
"content": "BA0005"
},
{
"content": "BA0006"
},
{
"content": "BA0007"
}
]
},
"_links": {
"first": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=0&size=20"
},
"self": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=0&size=20"
},
"next": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=1&size=20"
},
"last": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=585&size=20"
}
},
"page": {
"size": 20,
"totalElements": 11717,
"totalPages": 586,
"number": 0
}
}


The response is quite ugly because each string looks like an object.



I would like to have a response like this:



{
"_embedded": {
"strings": [
"BA0001",
"BA0002",
"BA0003",
"BA0004",
"BA0005",
"BA0006",
"BA0007"
]
},
"_links": {
"first": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=0&size=20"
},
"self": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=0&size=20"
},
"next": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=1&size=20"
},
"last": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=585&size=20"
}
},
"page": {
"size": 20,
"totalElements": 11717,
"totalPages": 586,
"number": 0
}
}


I tried to create my own ResourceAssembler but unfortunately PagedResourcesAssembler applies the resourceAssembler to each item (String) and not to the entire collection.



Is there a way to reach my goal using Spring stuff?










share|improve this question























  • Why would you do that? Embedded Resources are Resources and Resources are represented by JSON Objects. Changing that would make the result not HAL. Maybe these aren't resources after all, but just an array-valued attribute?

    – Jens Schauder
    Dec 10 '18 at 6:51











  • Exaclty @JensSchauder there are just a paged result of strings.

    – drenda
    Dec 10 '18 at 8:09











  • So don't make them embedded resources, but just attributes of your resource.

    – Jens Schauder
    Dec 10 '18 at 8:15











  • @JensSchauder Do you have an example of that? Thanks

    – drenda
    Dec 10 '18 at 9:16
















0















I'm using Spring Boot 2, Springa Data REST, Spring HATEOAS.
I've a particular @RepositoryRestController in which I need to return a paged result of Strings. So I've not objects but a list of String.



This is how my controller looks like:



@RepositoryRestController
@PreAuthorize("isAuthenticated()")
public class FrameController {
@PostMapping(path = "/frames/{property}/groupBy")
public ResponseEntity<?> search(@PathVariable("property") String property, @RequestBody(required = true) List<Filter> filters, Pageable pageable, Locale locale,
PersistentEntityResourceAssembler resourceAssembler) {
Page<String> pageResult = frameService.groupByProperty(property, filters, pageable);

return ResponseEntity.ok(pagedResourcesAssembler.toResource(pageResult));
}


The response looks like this:



{
"_embedded": {
"strings": [
{
"content": "BA0001"
},
{
"content": "BA0002"
},
{
"content": "BA0003"
},
{
"content": "BA0004"
},
{
"content": "BA0005"
},
{
"content": "BA0006"
},
{
"content": "BA0007"
}
]
},
"_links": {
"first": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=0&size=20"
},
"self": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=0&size=20"
},
"next": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=1&size=20"
},
"last": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=585&size=20"
}
},
"page": {
"size": 20,
"totalElements": 11717,
"totalPages": 586,
"number": 0
}
}


The response is quite ugly because each string looks like an object.



I would like to have a response like this:



{
"_embedded": {
"strings": [
"BA0001",
"BA0002",
"BA0003",
"BA0004",
"BA0005",
"BA0006",
"BA0007"
]
},
"_links": {
"first": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=0&size=20"
},
"self": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=0&size=20"
},
"next": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=1&size=20"
},
"last": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=585&size=20"
}
},
"page": {
"size": 20,
"totalElements": 11717,
"totalPages": 586,
"number": 0
}
}


I tried to create my own ResourceAssembler but unfortunately PagedResourcesAssembler applies the resourceAssembler to each item (String) and not to the entire collection.



Is there a way to reach my goal using Spring stuff?










share|improve this question























  • Why would you do that? Embedded Resources are Resources and Resources are represented by JSON Objects. Changing that would make the result not HAL. Maybe these aren't resources after all, but just an array-valued attribute?

    – Jens Schauder
    Dec 10 '18 at 6:51











  • Exaclty @JensSchauder there are just a paged result of strings.

    – drenda
    Dec 10 '18 at 8:09











  • So don't make them embedded resources, but just attributes of your resource.

    – Jens Schauder
    Dec 10 '18 at 8:15











  • @JensSchauder Do you have an example of that? Thanks

    – drenda
    Dec 10 '18 at 9:16














0












0








0








I'm using Spring Boot 2, Springa Data REST, Spring HATEOAS.
I've a particular @RepositoryRestController in which I need to return a paged result of Strings. So I've not objects but a list of String.



This is how my controller looks like:



@RepositoryRestController
@PreAuthorize("isAuthenticated()")
public class FrameController {
@PostMapping(path = "/frames/{property}/groupBy")
public ResponseEntity<?> search(@PathVariable("property") String property, @RequestBody(required = true) List<Filter> filters, Pageable pageable, Locale locale,
PersistentEntityResourceAssembler resourceAssembler) {
Page<String> pageResult = frameService.groupByProperty(property, filters, pageable);

return ResponseEntity.ok(pagedResourcesAssembler.toResource(pageResult));
}


The response looks like this:



{
"_embedded": {
"strings": [
{
"content": "BA0001"
},
{
"content": "BA0002"
},
{
"content": "BA0003"
},
{
"content": "BA0004"
},
{
"content": "BA0005"
},
{
"content": "BA0006"
},
{
"content": "BA0007"
}
]
},
"_links": {
"first": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=0&size=20"
},
"self": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=0&size=20"
},
"next": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=1&size=20"
},
"last": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=585&size=20"
}
},
"page": {
"size": 20,
"totalElements": 11717,
"totalPages": 586,
"number": 0
}
}


The response is quite ugly because each string looks like an object.



I would like to have a response like this:



{
"_embedded": {
"strings": [
"BA0001",
"BA0002",
"BA0003",
"BA0004",
"BA0005",
"BA0006",
"BA0007"
]
},
"_links": {
"first": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=0&size=20"
},
"self": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=0&size=20"
},
"next": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=1&size=20"
},
"last": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=585&size=20"
}
},
"page": {
"size": 20,
"totalElements": 11717,
"totalPages": 586,
"number": 0
}
}


I tried to create my own ResourceAssembler but unfortunately PagedResourcesAssembler applies the resourceAssembler to each item (String) and not to the entire collection.



Is there a way to reach my goal using Spring stuff?










share|improve this question














I'm using Spring Boot 2, Springa Data REST, Spring HATEOAS.
I've a particular @RepositoryRestController in which I need to return a paged result of Strings. So I've not objects but a list of String.



This is how my controller looks like:



@RepositoryRestController
@PreAuthorize("isAuthenticated()")
public class FrameController {
@PostMapping(path = "/frames/{property}/groupBy")
public ResponseEntity<?> search(@PathVariable("property") String property, @RequestBody(required = true) List<Filter> filters, Pageable pageable, Locale locale,
PersistentEntityResourceAssembler resourceAssembler) {
Page<String> pageResult = frameService.groupByProperty(property, filters, pageable);

return ResponseEntity.ok(pagedResourcesAssembler.toResource(pageResult));
}


The response looks like this:



{
"_embedded": {
"strings": [
{
"content": "BA0001"
},
{
"content": "BA0002"
},
{
"content": "BA0003"
},
{
"content": "BA0004"
},
{
"content": "BA0005"
},
{
"content": "BA0006"
},
{
"content": "BA0007"
}
]
},
"_links": {
"first": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=0&size=20"
},
"self": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=0&size=20"
},
"next": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=1&size=20"
},
"last": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=585&size=20"
}
},
"page": {
"size": 20,
"totalElements": 11717,
"totalPages": 586,
"number": 0
}
}


The response is quite ugly because each string looks like an object.



I would like to have a response like this:



{
"_embedded": {
"strings": [
"BA0001",
"BA0002",
"BA0003",
"BA0004",
"BA0005",
"BA0006",
"BA0007"
]
},
"_links": {
"first": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=0&size=20"
},
"self": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=0&size=20"
},
"next": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=1&size=20"
},
"last": {
"href": "http://localhost:8082/api/v1/frames/model/groupBy?page=585&size=20"
}
},
"page": {
"size": 20,
"totalElements": 11717,
"totalPages": 586,
"number": 0
}
}


I tried to create my own ResourceAssembler but unfortunately PagedResourcesAssembler applies the resourceAssembler to each item (String) and not to the entire collection.



Is there a way to reach my goal using Spring stuff?







java spring spring-hateoas






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 28 '18 at 14:22









drendadrenda

1,63922558




1,63922558













  • Why would you do that? Embedded Resources are Resources and Resources are represented by JSON Objects. Changing that would make the result not HAL. Maybe these aren't resources after all, but just an array-valued attribute?

    – Jens Schauder
    Dec 10 '18 at 6:51











  • Exaclty @JensSchauder there are just a paged result of strings.

    – drenda
    Dec 10 '18 at 8:09











  • So don't make them embedded resources, but just attributes of your resource.

    – Jens Schauder
    Dec 10 '18 at 8:15











  • @JensSchauder Do you have an example of that? Thanks

    – drenda
    Dec 10 '18 at 9:16



















  • Why would you do that? Embedded Resources are Resources and Resources are represented by JSON Objects. Changing that would make the result not HAL. Maybe these aren't resources after all, but just an array-valued attribute?

    – Jens Schauder
    Dec 10 '18 at 6:51











  • Exaclty @JensSchauder there are just a paged result of strings.

    – drenda
    Dec 10 '18 at 8:09











  • So don't make them embedded resources, but just attributes of your resource.

    – Jens Schauder
    Dec 10 '18 at 8:15











  • @JensSchauder Do you have an example of that? Thanks

    – drenda
    Dec 10 '18 at 9:16

















Why would you do that? Embedded Resources are Resources and Resources are represented by JSON Objects. Changing that would make the result not HAL. Maybe these aren't resources after all, but just an array-valued attribute?

– Jens Schauder
Dec 10 '18 at 6:51





Why would you do that? Embedded Resources are Resources and Resources are represented by JSON Objects. Changing that would make the result not HAL. Maybe these aren't resources after all, but just an array-valued attribute?

– Jens Schauder
Dec 10 '18 at 6:51













Exaclty @JensSchauder there are just a paged result of strings.

– drenda
Dec 10 '18 at 8:09





Exaclty @JensSchauder there are just a paged result of strings.

– drenda
Dec 10 '18 at 8:09













So don't make them embedded resources, but just attributes of your resource.

– Jens Schauder
Dec 10 '18 at 8:15





So don't make them embedded resources, but just attributes of your resource.

– Jens Schauder
Dec 10 '18 at 8:15













@JensSchauder Do you have an example of that? Thanks

– drenda
Dec 10 '18 at 9:16





@JensSchauder Do you have an example of that? Thanks

– drenda
Dec 10 '18 at 9:16












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