How to map pojo class's field to string object returning from API-CodePudding

I am working on an application where I want to convert string object coming from data api to json object.Now, I converted string object to json but there is a problem. My pojo class has multiple fields with corresponding getters and setters one of them is "filterName" and it looks like

   @SerializedName(value="cellFilter", alternate="tissueFilter")
    private String filterName;

What it does is it extracts the value associated with "cellFilter" and "tissueFilter". I am not sure if its an optimized way to retire the data using the same field. Also, I want to use that same field to retrieve another value and I don't know how to do that ( i.e I want to use filterName to get the values of tissueFilter, cellFilter and applicationFilter ).

data object looks like as following Note - there are 3 strings for tissueFilter, cellFilter and applicationFilter which comes from data api. After converting them in java objects they look like this,

tissufilter


 {
    "url": "xyz",
    "sortOrder": 8,
    "imageId": "1111",
    "tissueFilter": "Heart"
  }

cellFilter

{
    "url": "xyz",
    "sortOrder": 6,
    "imageId": "2222",
    "cellFilter": "Pancreas"
  }

and applicationFilter

 {
    "applicationFilter": "c56",
    "url": "xyz",
    "sortOrder": 1,
    "imageId": "3333",
  }

Thank you

CodePudding user response：

If Jackson JSON library is used for serializing/deserialing JSON data, @JsonAlias annotation should be applied to deserialize the field which may have different names:

@Data
class Pojo {
    private String url;
    private int orderId;
    private String imageId;

    @JsonAlias({"applicationFilter", "cellFilter", "tissueFilter"})
    private String filter;
}

After deserialization of the mentioned JSON snippets, the field filter should be set to appropriate value defined as "applicationFilter", etc.

However, it seems that Gson is used in the question, and its @SerializedName also allows for multiple versions in alternate parameter:

@Data
class PojoForGson {
    private String url;
    private int orderId;
    private String imageId;

    @SerializedName(value = "cellFilter" alternate = {"applicationFilter",  "tissueFilter"})
    private String filter;
}