Android Room: Efficient way to transform json result into db object

Question

Problem

I have a POJO parsed from an API call which looks like this

public class Article {

  public Long id;

  @Expose
  @Serialized         


        

Answer 1

You can use @Embedded annotation for your related POJO which refers to another class.

You can do like this:

Article.java

@Entity(tableName = "Article")
public class Article {
    @ColumnInfo (name = "article_id")
    public Long id;

    @Expose
    @SerializedName("section")
    public String section;

    @Expose
    @SerializedName("title")
    public String title;

    @Expose
    @SerializedName("topics")
    public List topics;

    @Embedded // We need relation to Media table
    @Expose
    @SerializedName("media")
    public List media;
}

Media.java

public class Media {
    @ColumnInfo (name = "media_id")
    public Long id;
}

So now on, you can directly use this POJO as Entity for ROOM.

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Please note:

Though i'm not sure about how you'll handle that relation (because, Media obj is in list for Article class, you'll need to use type converter for that)

Reference from here