CODEWITHSUNDEEP
spring-bootpaginationspring-mongodb
Mr. meeseeks
Mr. meeseeks

Reputation: 25

Using spring how do we return paginated list of objects from an Object

I am accepting a paginated response from service and performing an operation on it. which results in to a singular object. object which contains aggregation queryResult from mongo, How to return paginated response of objects within a single object from endpoint.

{
"fullName:"abc",

"educationData":[

// paginated response from another service.
//queryResult

],

"cellNo" : "12345",
"address" : "pqr";
}

I want to paginate list of "educationData", but I ended up paginating entire object.

Upvotes: 1

Views: 530

Answers (1)

Adib Rajiwate
Adib Rajiwate

Reputation: 405

As you are already receiving a paginated response from a service, you can carry forward the same response. Create a class which implements PageImpl which will give you all the pagination information for eg:-

public class CustomPageImpl extends PageImpl<T> {

  @JsonCreator
  @JsonIgnoreProperties(ignoreUnknown = true)
  public CustomPageImpl(@JsonProperty("content") List<T> content,
      @JsonProperty("number") int page,
      @JsonProperty("size") int size,
      @JsonProperty("totalElements") long totalElements) {
    super(content, new PageRequest(page, size), totalElements);
  }
}

change your response object and append these fields from CustomPageImpl class.

{
"fullName:"abc",

"educationData":[

// paginated response from another service.
//queryResult

],

"cellNo" : "12345",
"address" : "pqr",
"totalElements": 0,
"totalPages": 0
}

Upvotes: 1

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