How to use Postgres JSONB datatype with JPA?

Question

Im not finding a way to map the JSON and JSONB datatypes from PostgreSQL using JPA (EclipseLink). Is some one using this datatypes with JPA and can give me some working examples?

Answer 1

All the answers helped me to reach the final solution that is ready for JPA and not EclipseLink or Hibernate specifically.

import com.fasterxml.jackson.core.type.TypeReference; import com.fasterxml.jackson.databind.ObjectMapper; import java.io.IOException; import javax.json.Json; import javax.json.JsonObject; import javax.persistence.Converter; import org.postgresql.util.PGobject;  @Converter(autoApply = true) public class JsonConverter implements javax.persistence.AttributeConverter<JsonObject, Object> {    private static final long serialVersionUID = 1L;   private static ObjectMapper mapper = new ObjectMapper();    @Override   public Object convertToDatabaseColumn(JsonObject objectValue) {     try {       PGobject out = new PGobject();       out.setType("json");       out.setValue(objectValue.toString());       return out;     } catch (Exception e) {       throw new IllegalArgumentException("Unable to serialize to json field ", e);     }   }    @Override   public JsonObject convertToEntityAttribute(Object dataValue) {     try {       if (dataValue instanceof PGobject && ((PGobject) dataValue).getType().equals("json")) {         return mapper.reader(new TypeReference<JsonObject>() {         }).readValue(((PGobject) dataValue).getValue());       }       return Json.createObjectBuilder().build();     } catch (IOException e) {       throw new IllegalArgumentException("Unable to deserialize to json field ", e);     }   } }