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Refactor Play example

This commit is contained in:
Grzegorz Piwowarek 2016-10-04 17:54:59 +02:00
parent 1ecb726d7e
commit 0dc8119722
4 changed files with 82 additions and 70 deletions
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6
play-framework/student-api/app/controllers/AsyncController.java
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@ -1,13 +1,17 @@
package controllers; package controllers;
import akka.actor.ActorSystem; import akka.actor.ActorSystem;
import javax.inject.*; import javax.inject.*;
import play.*; import play.*;
import play.mvc.*; import play.mvc.*;
import java.util.concurrent.Executor; import java.util.concurrent.Executor;
import java.util.concurrent.CompletableFuture; import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CompletionStage; import java.util.concurrent.CompletionStage;
import java.util.concurrent.TimeUnit; import java.util.concurrent.TimeUnit;
import scala.concurrent.duration.Duration; import scala.concurrent.duration.Duration;
import scala.concurrent.ExecutionContextExecutor; import scala.concurrent.ExecutionContextExecutor;
@ -38,7 +42,7 @@ public class AsyncController extends Controller {
/** /**
* An action that returns a plain text message after a delay * An action that returns a plain text message after a delay
* of 1 second. * of 1 second.
* * <p>
* The configuration in the <code>routes</code> file means that this method * The configuration in the <code>routes</code> file means that this method
* will be called when the application receives a <code>GET</code> request with * will be called when the application receives a <code>GET</code> request with
* a path of <code>/message</code>. * a path of <code>/message</code>.

67
play-framework/student-api/app/controllers/StudentController.java
View File

@ -1,56 +1,63 @@
package controllers; package controllers;
import models.*;
import util.*;
import play.mvc.*;
import play.libs.Json;
import play.libs.Json.*;
import com.fasterxml.jackson.databind.JsonNode; import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.ObjectMapper;
import java.util.List; import models.Student;
import models.StudentStore;
import play.libs.Json;
import play.mvc.Controller;
import play.mvc.Result;
import util.Util;
import java.util.Set;
public class StudentController extends Controller { public class StudentController extends Controller {
public Result create() { public Result create() {
JsonNode json = request().body().asJson(); JsonNode json = request().body().asJson();
if(json == null) if (json == null) {
return badRequest(Util.createResponse("Expecting Json data",false)); return badRequest(Util.createResponse("Expecting Json data", false));
Student student=StudentStore.getInstance().addStudent((Student)Json.fromJson(json,Student.class));
JsonNode jsonObject=Json.toJson(student);
return created(Util.createResponse(jsonObject,true));
} }
Student student = StudentStore.getInstance().addStudent(Json.fromJson(json, Student.class));
JsonNode jsonObject = Json.toJson(student);
return created(Util.createResponse(jsonObject, true));
}
public Result update() { public Result update() {
JsonNode json = request().body().asJson(); JsonNode json = request().body().asJson();
if(json == null) if (json == null) {
return badRequest(Util.createResponse("Expecting Json data",false)); return badRequest(Util.createResponse("Expecting Json data", false));
Student student=StudentStore.getInstance().updateStudent((Student)Json.fromJson(json,Student.class)); }
if(student==null){ Student student = StudentStore.getInstance().updateStudent(Json.fromJson(json, Student.class));
return notFound(Util.createResponse("Student not found",false)); if (student == null) {
return notFound(Util.createResponse("Student not found", false));
} }
JsonNode jsonObject=Json.toJson(student); JsonNode jsonObject = Json.toJson(student);
return ok(Util.createResponse(jsonObject,true)); return ok(Util.createResponse(jsonObject, true));
} }
public Result retrieve(int id) { public Result retrieve(int id) {
Student student=StudentStore.getInstance().getStudent(id); if (StudentStore.getInstance().getStudent(id) == null) {
if(student==null){ return notFound(Util.createResponse("Student with id:" + id + " not found", false));
return notFound(Util.createResponse("Student with id:"+id+" not found",false));
} }
JsonNode jsonObjects=Json.toJson(student); JsonNode jsonObjects = Json.toJson(StudentStore.getInstance().getStudent(id));
return ok(Util.createResponse(jsonObjects,true)); return ok(Util.createResponse(jsonObjects, true));
} }
public Result listStudents() { public Result listStudents() {
Set<Student> result=StudentStore.getInstance().getAllStudents(); Set<Student> result = StudentStore.getInstance().getAllStudents();
ObjectMapper mapper = new ObjectMapper(); ObjectMapper mapper = new ObjectMapper();
JsonNode jsonData=mapper.convertValue(result, JsonNode.class); JsonNode jsonData = mapper.convertValue(result, JsonNode.class);
return ok(Util.createResponse(jsonData,true)); return ok(Util.createResponse(jsonData, true));
} }
public Result delete(int id) { public Result delete(int id) {
boolean status=StudentStore.getInstance().deleteStudent(id); if (!StudentStore.getInstance().deleteStudent(id)) {
if(!status){ return notFound(Util.createResponse("Student with id:" + id + " not found", false));
return notFound(Util.createResponse("Student with id:"+id+" not found",false));
} }
return ok(Util.createResponse("Student with id:"+id+" deleted",true)); return ok(Util.createResponse("Student with id:" + id + " deleted", true));
} }
} }

9
play-framework/student-api/app/models/StudentStore.java
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@ -1,5 +1,5 @@
package models; package models;
import java.util.ArrayList;
import java.util.HashMap; import java.util.HashMap;
import java.util.HashSet; import java.util.HashSet;
import java.util.Map; import java.util.Map;
@ -10,13 +10,14 @@ public class StudentStore {
private Map<Integer, Student> students = new HashMap<>(); private Map<Integer, Student> students = new HashMap<>();
public static StudentStore getInstance() { public static StudentStore getInstance() {
if (instance == null) if (instance == null) {
instance = new StudentStore(); instance = new StudentStore();
}
return instance; return instance;
} }
public Student addStudent(Student student) { public Student addStudent(Student student) {
int id = students.size() + 1; int id = students.size();
student.setId(id); student.setId(id);
students.put(id, student); students.put(id, student);
return student; return student;
@ -31,7 +32,7 @@ public class StudentStore {
} }
public Student updateStudent(Student student) { public Student updateStudent(Student student) {
int id=student.getId(); int id = student.getId();
if (students.containsKey(id)) { if (students.containsKey(id)) {
students.put(id, student); students.put(id, student);
return student; return student;

14
play-framework/student-api/app/util/Util.java
View File

@ -1,16 +1,16 @@
package util; package util;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ObjectNode; import com.fasterxml.jackson.databind.node.ObjectNode;
import play.libs.Json; import play.libs.Json;
import play.libs.Json.*;
import com.fasterxml.jackson.databind.JsonNode;
public class Util{ public class Util {
public static ObjectNode createResponse(Object response,boolean ok){ public static ObjectNode createResponse(Object response, boolean ok) {
ObjectNode result = Json.newObject(); ObjectNode result = Json.newObject();
result.put("isSuccessfull", ok); result.put("isSuccessfull", ok);
if(response instanceof String) if (response instanceof String)
result.put("body",(String)response); result.put("body", (String) response);
else result.put("body",(JsonNode)response); else result.put("body", (JsonNode) response);
return result; return result;
} }