Functions.java

package common;

import com.fasterxml.jackson.databind.JsonNode;

import play.Logger;
import play.libs.F.Function;
import play.libs.Json;
import play.libs.WS.Response;
import play.mvc.Result;
import play.mvc.Results;

public class Functions {
    public static Function<Response, JsonNode> responseToJson = new Function<Response, JsonNode>() {
        public JsonNode apply(Response s) {
            return s.asJson();
        }
    };

    public static Function<JsonNode, Result> jsonToResult = new Function<JsonNode, Result>() {
        public Result apply(JsonNode s) {
            return Results.ok(s);
        }
    };

    public static Function<Throwable, JsonNode> fetchUserError = new Function<Throwable, JsonNode>() {
        @Override
        public JsonNode apply(Throwable t) throws Throwable {
            Logger.error("Failed to fetch profile", t);
            return Json
                    .parse("{\"error\": \"failed to fetch the profile of user\"}");
        }
    };

    public static Function<JsonNode, String> findTextElement(final String path) {
        return new Function<JsonNode, String>() {
            public String apply(JsonNode s) {
                return s.findPath(path).asText();
            }
        };
    }

}