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refactor: Refactored Layers Architecture To Be A Spring Boot Application. Issue #2450 (#2469)

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* #2450 1. Refactored Layers Architecture to be a Spring boot app. 2. Changed the xml-based configuration to annotation-based. 3. Used spring's constructor injection to pass around needed objects. 4. Implemented deleteAll() methods for the CakeBakingServiceImpl to be used during testing  5. Implemented a CommandLineRunner to run the spring boot app. And others.

* #2450 added the contents of the etc directory and a README.md

* #2450 made corrections in response to the PR tests

* #2450 made corrections in response to requested changes

* #2450 made corrections in response to requested changes

---------

Co-authored-by: Ilkka Seppälä <iluwatar@users.noreply.github.com>
This commit is contained in:
JabezBrew
2023-07-11 09:57:16 +00:00
committed by GitHub
parent e40923d938
commit edbb59a982
34 changed files with 1023 additions and 1199 deletions
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layers/src/main/java/com/iluwatar/layers/Runner.java
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package com.iluwatar.layers;
import dto.CakeInfo;
import dto.CakeLayerInfo;
import dto.CakeToppingInfo;
import exception.CakeBakingException;
import lombok.extern.slf4j.Slf4j;
import service.CakeBakingService;
import view.CakeViewImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.stereotype.Component;
import java.util.List;
@Component
@Slf4j
public class Runner implements CommandLineRunner {
private final CakeBakingService cakeBakingService;
public static final String STRAWBERRY = "strawberry";
@Autowired
public Runner(CakeBakingService cakeBakingService) {
this.cakeBakingService = cakeBakingService;
}
@Override
public void run(String... args) {
//initialize sample data
initializeData();
// create view and render it
var cakeView = new CakeViewImpl(cakeBakingService);
cakeView.render();
}
/**
* Initializes the example data.
*/
private void initializeData() {
cakeBakingService.saveNewLayer(new CakeLayerInfo("chocolate", 1200));
cakeBakingService.saveNewLayer(new CakeLayerInfo("banana", 900));
cakeBakingService.saveNewLayer(new CakeLayerInfo(STRAWBERRY, 950));
cakeBakingService.saveNewLayer(new CakeLayerInfo("lemon", 950));
cakeBakingService.saveNewLayer(new CakeLayerInfo("vanilla", 950));
cakeBakingService.saveNewLayer(new CakeLayerInfo(STRAWBERRY, 950));
cakeBakingService.saveNewTopping(new CakeToppingInfo("candies", 350));
cakeBakingService.saveNewTopping(new CakeToppingInfo("cherry", 350));
var cake1 = new CakeInfo(new CakeToppingInfo("candies", 0), List.of(
new CakeLayerInfo("chocolate", 0),
new CakeLayerInfo("banana", 0),
new CakeLayerInfo(STRAWBERRY, 0)));
try {
cakeBakingService.bakeNewCake(cake1);
} catch (CakeBakingException e) {
LOGGER.error("Cake baking exception", e);
}
var cake2 = new CakeInfo(new CakeToppingInfo("cherry", 0), List.of(
new CakeLayerInfo("vanilla", 0),
new CakeLayerInfo("lemon", 0),
new CakeLayerInfo(STRAWBERRY, 0)));
try {
cakeBakingService.bakeNewCake(cake2);
} catch (CakeBakingException e) {
LOGGER.error("Cake baking exception", e);
}
}
}
layers/src/main/java/com/iluwatar/layers/app/App.java
-135
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@@ -1,135 +0,0 @@
/*
* This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
*
* The MIT License
* Copyright © 2014-2022 Ilkka Seppälä
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.iluwatar.layers.app;
import com.iluwatar.layers.dao.CakeDao;
import com.iluwatar.layers.dao.CakeLayerDao;
import com.iluwatar.layers.dao.CakeToppingDao;
import com.iluwatar.layers.dto.CakeInfo;
import com.iluwatar.layers.dto.CakeLayerInfo;
import com.iluwatar.layers.dto.CakeToppingInfo;
import com.iluwatar.layers.entity.Cake;
import com.iluwatar.layers.entity.CakeLayer;
import com.iluwatar.layers.entity.CakeTopping;
import com.iluwatar.layers.exception.CakeBakingException;
import com.iluwatar.layers.service.CakeBakingService;
import com.iluwatar.layers.service.CakeBakingServiceImpl;
import com.iluwatar.layers.view.CakeViewImpl;
import java.util.List;
/**
* Layers is an architectural style where software responsibilities are divided among the
* different layers of the application.
*
* <p>This example demonstrates a traditional 3-layer architecture consisting of data access
* layer, business layer and presentation layer.
*
* <p>The data access layer is formed of Spring Data repositories <code>CakeDao</code>,
* <code>CakeToppingDao</code> and <code>CakeLayerDao</code>. The repositories can be used
* for CRUD operations on cakes, cake toppings and cake layers respectively.
*
* <p>The business layer is built on top of the data access layer. <code>CakeBakingService</code>
* offers methods to retrieve available cake toppings and cake layers and baked cakes. Also the
* service is used to create new cakes out of cake toppings and cake layers.
*
* <p>The presentation layer is built on the business layer and in this example it simply lists
* the cakes that have been baked.
*
* <p>We have applied so called strict layering which means that the layers can only access the
* classes directly beneath them. This leads the solution to create an additional set of DTOs
* ( <code>CakeInfo</code>, <code>CakeToppingInfo</code>, <code>CakeLayerInfo</code>) to translate
* data between layers. In other words, <code>CakeBakingService</code> cannot return entities
* ( <code>Cake</code>, <code>CakeTopping</code>, <code>CakeLayer</code>) directly since these
* reside on data access layer but instead translates these into business layer DTOs
* (<code>CakeInfo</code>, <code>CakeToppingInfo</code>, <code>CakeLayerInfo</code>) and returns
* them instead. This way the presentation layer does not have any knowledge of other layers than
* the business layer and thus is not affected by changes to them.
*
* @see Cake
* @see CakeTopping
* @see CakeLayer
* @see CakeDao
* @see CakeToppingDao
* @see CakeLayerDao
* @see CakeBakingService
* @see CakeInfo
* @see CakeToppingInfo
* @see CakeLayerInfo
*
*/
public class App {
private static final CakeBakingService cakeBakingService = new CakeBakingServiceImpl();
public static final String STRAWBERRY = "strawberry";
/**
* Application entry point.
*
* @param args Command line parameters
*/
public static void main(String[] args) {
// initialize example data
initializeData(cakeBakingService);
// create view and render it
var cakeView = new CakeViewImpl(cakeBakingService);
cakeView.render();
}
/**
* Initializes the example data.
*/
private static void initializeData(CakeBakingService cakeBakingService) {
cakeBakingService.saveNewLayer(new CakeLayerInfo("chocolate", 1200));
cakeBakingService.saveNewLayer(new CakeLayerInfo("banana", 900));
cakeBakingService.saveNewLayer(new CakeLayerInfo(STRAWBERRY, 950));
cakeBakingService.saveNewLayer(new CakeLayerInfo("lemon", 950));
cakeBakingService.saveNewLayer(new CakeLayerInfo("vanilla", 950));
cakeBakingService.saveNewLayer(new CakeLayerInfo(STRAWBERRY, 950));
cakeBakingService.saveNewTopping(new CakeToppingInfo("candies", 350));
cakeBakingService.saveNewTopping(new CakeToppingInfo("cherry", 350));
var cake1 = new CakeInfo(new CakeToppingInfo("candies", 0), List.of(
new CakeLayerInfo("chocolate", 0),
new CakeLayerInfo("banana", 0),
new CakeLayerInfo(STRAWBERRY, 0)));
try {
cakeBakingService.bakeNewCake(cake1);
} catch (CakeBakingException e) {
e.printStackTrace();
}
var cake2 = new CakeInfo(new CakeToppingInfo("cherry", 0), List.of(
new CakeLayerInfo("vanilla", 0),
new CakeLayerInfo("lemon", 0),
new CakeLayerInfo(STRAWBERRY, 0)));
try {
cakeBakingService.bakeNewCake(cake2);
} catch (CakeBakingException e) {
e.printStackTrace();
}
}
}
layers/src/main/java/com/iluwatar/layers/app/LayersApp.java
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package com.iluwatar.layers.app;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
@SpringBootApplication
@EnableJpaRepositories(basePackages = "dao")
@EntityScan(basePackages = "entity")
@ComponentScan(basePackages = {"com.iluwatar.layers", "service", "dto", "exception", "view" ,"dao"})
public class LayersApp {
public static void main(String[] args) {
SpringApplication.run(LayersApp.class, args);
}
}
layers/src/main/java/com/iluwatar/layers/entity/CakeLayer.java
-94
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@@ -1,94 +0,0 @@
/*
* This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
*
* The MIT License
* Copyright © 2014-2022 Ilkka Seppälä
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.iluwatar.layers.entity;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.ManyToOne;
/**
* CakeLayer entity.
*/
@Entity
public class CakeLayer {
@Id
@GeneratedValue
private Long id;
private String name;
private int calories;
@ManyToOne(cascade = CascadeType.ALL)
private Cake cake;
public CakeLayer() {
}
public CakeLayer(String name, int calories) {
this.setName(name);
this.setCalories(calories);
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getCalories() {
return calories;
}
public void setCalories(int calories) {
this.calories = calories;
}
@Override
public String toString() {
return String.format("id=%s name=%s calories=%d", id, name, calories);
}
public Cake getCake() {
return cake;
}
public void setCake(Cake cake) {
this.cake = cake;
}
}
layers/src/main/java/com/iluwatar/layers/entity/CakeTopping.java
-94
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@@ -1,94 +0,0 @@
/*
* This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
*
* The MIT License
* Copyright © 2014-2022 Ilkka Seppälä
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.iluwatar.layers.entity;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.OneToOne;
/**
* CakeTopping entity.
*/
@Entity
public class CakeTopping {
@Id
@GeneratedValue
private Long id;
private String name;
private int calories;
@OneToOne(cascade = CascadeType.ALL)
private Cake cake;
public CakeTopping() {
}
public CakeTopping(String name, int calories) {
this.setName(name);
this.setCalories(calories);
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getCalories() {
return calories;
}
public void setCalories(int calories) {
this.calories = calories;
}
@Override
public String toString() {
return String.format("id=%s name=%s calories=%d", id, name, calories);
}
public Cake getCake() {
return cake;
}
public void setCake(Cake cake) {
this.cake = cake;
}
}
layers/src/main/java/com/iluwatar/layers/service/CakeBakingServiceImpl.java
-175
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@@ -1,175 +0,0 @@
/*
* This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
*
* The MIT License
* Copyright © 2014-2022 Ilkka Seppälä
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.iluwatar.layers.service;
import com.iluwatar.layers.dao.CakeDao;
import com.iluwatar.layers.dao.CakeLayerDao;
import com.iluwatar.layers.dao.CakeToppingDao;
import com.iluwatar.layers.dto.CakeInfo;
import com.iluwatar.layers.dto.CakeLayerInfo;
import com.iluwatar.layers.dto.CakeToppingInfo;
import com.iluwatar.layers.entity.Cake;
import com.iluwatar.layers.entity.CakeLayer;
import com.iluwatar.layers.entity.CakeTopping;
import com.iluwatar.layers.exception.CakeBakingException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
/**
* Implementation of CakeBakingService.
*/
@Service
@Transactional
public class CakeBakingServiceImpl implements CakeBakingService {
private final AbstractApplicationContext context;
public CakeBakingServiceImpl() {
this.context = new ClassPathXmlApplicationContext("applicationContext.xml");
}
@Override
public void bakeNewCake(CakeInfo cakeInfo) throws CakeBakingException {
var allToppings = getAvailableToppingEntities();
var matchingToppings =
allToppings.stream().filter(t -> t.getName().equals(cakeInfo.cakeToppingInfo.name))
.toList();
if (matchingToppings.isEmpty()) {
throw new CakeBakingException(String.format("Topping %s is not available",
cakeInfo.cakeToppingInfo.name));
}
var allLayers = getAvailableLayerEntities();
Set<CakeLayer> foundLayers = new HashSet<>();
for (var info : cakeInfo.cakeLayerInfos) {
var found = allLayers.stream().filter(layer -> layer.getName().equals(info.name)).findFirst();
if (found.isEmpty()) {
throw new CakeBakingException(String.format("Layer %s is not available", info.name));
} else {
foundLayers.add(found.get());
}
}
var toppingBean = context.getBean(CakeToppingDao.class);
var topping = toppingBean.findById(matchingToppings.iterator().next().getId());
var cakeBean = context.getBean(CakeDao.class);
if (topping.isPresent()) {
var cake = new Cake();
cake.setTopping(topping.get());
cake.setLayers(foundLayers);
cakeBean.save(cake);
topping.get().setCake(cake);
toppingBean.save(topping.get());
var layerBean = context.getBean(CakeLayerDao.class);
for (var layer : foundLayers) {
layer.setCake(cake);
layerBean.save(layer);
}
} else {
throw new CakeBakingException(String.format("Topping %s is not available",
cakeInfo.cakeToppingInfo.name));
}
}
@Override
public void saveNewTopping(CakeToppingInfo toppingInfo) {
var bean = context.getBean(CakeToppingDao.class);
bean.save(new CakeTopping(toppingInfo.name, toppingInfo.calories));
}
@Override
public void saveNewLayer(CakeLayerInfo layerInfo) {
var bean = context.getBean(CakeLayerDao.class);
bean.save(new CakeLayer(layerInfo.name, layerInfo.calories));
}
private List<CakeTopping> getAvailableToppingEntities() {
var bean = context.getBean(CakeToppingDao.class);
List<CakeTopping> result = new ArrayList<>();
for (CakeTopping topping : bean.findAll()) {
if (topping.getCake() == null) {
result.add(topping);
}
}
return result;
}
@Override
public List<CakeToppingInfo> getAvailableToppings() {
var bean = context.getBean(CakeToppingDao.class);
List<CakeToppingInfo> result = new ArrayList<>();
for (CakeTopping next : bean.findAll()) {
if (next.getCake() == null) {
result.add(new CakeToppingInfo(next.getId(), next.getName(), next.getCalories()));
}
}
return result;
}
private List<CakeLayer> getAvailableLayerEntities() {
var bean = context.getBean(CakeLayerDao.class);
List<CakeLayer> result = new ArrayList<>();
for (CakeLayer next : bean.findAll()) {
if (next.getCake() == null) {
result.add(next);
}
}
return result;
}
@Override
public List<CakeLayerInfo> getAvailableLayers() {
var bean = context.getBean(CakeLayerDao.class);
List<CakeLayerInfo> result = new ArrayList<>();
for (CakeLayer next : bean.findAll()) {
if (next.getCake() == null) {
result.add(new CakeLayerInfo(next.getId(), next.getName(), next.getCalories()));
}
}
return result;
}
@Override
public List<CakeInfo> getAllCakes() {
var cakeBean = context.getBean(CakeDao.class);
List<CakeInfo> result = new ArrayList<>();
for (Cake cake : cakeBean.findAll()) {
var cakeToppingInfo =
new CakeToppingInfo(cake.getTopping().getId(), cake.getTopping().getName(), cake
.getTopping().getCalories());
List<CakeLayerInfo> cakeLayerInfos = new ArrayList<>();
for (var layer : cake.getLayers()) {
cakeLayerInfos.add(new CakeLayerInfo(layer.getId(), layer.getName(), layer.getCalories()));
}
var cakeInfo = new CakeInfo(cake.getId(), cakeToppingInfo, cakeLayerInfos);
result.add(cakeInfo);
}
return result;
}
}
layers/src/main/java/com/iluwatar/layers/dao/CakeDao.java → layers/src/main/java/dao/CakeDao.java
+4 -6
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@@ -22,16 +22,14 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.iluwatar.layers.dao;
package dao;
import com.iluwatar.layers.entity.Cake;
import org.springframework.data.repository.CrudRepository;
import entity.Cake;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
/**
* CRUD repository for cakes.
*/
@Repository
public interface CakeDao extends CrudRepository<Cake, Long> {
}
public interface CakeDao extends JpaRepository<Cake, Long> {}
layers/src/main/java/com/iluwatar/layers/dao/CakeLayerDao.java → layers/src/main/java/dao/CakeLayerDao.java
+4 -4
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@@ -22,16 +22,16 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.iluwatar.layers.dao;
package dao;
import com.iluwatar.layers.entity.CakeLayer;
import org.springframework.data.repository.CrudRepository;
import entity.CakeLayer;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
/**
* CRUD repository for cake layers.
*/
@Repository
public interface CakeLayerDao extends CrudRepository<CakeLayer, Long> {
public interface CakeLayerDao extends JpaRepository<CakeLayer, Long> {
}
layers/src/main/java/com/iluwatar/layers/dao/CakeToppingDao.java → layers/src/main/java/dao/CakeToppingDao.java
+6 -4
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@@ -22,16 +22,18 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.iluwatar.layers.dao;
package dao;
import com.iluwatar.layers.entity.CakeTopping;
import org.springframework.data.repository.CrudRepository;
import entity.CakeTopping;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
/**
* CRUD repository cake toppings.
*/
@Repository
public interface CakeToppingDao extends CrudRepository<CakeTopping, Long> {
public interface CakeToppingDao extends JpaRepository<CakeTopping, Long> {
}
layers/src/main/java/com/iluwatar/layers/dto/CakeInfo.java → layers/src/main/java/dto/CakeInfo.java
+33 -33
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@@ -22,7 +22,7 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.iluwatar.layers.dto;
package dto;
import java.util.List;
import java.util.Optional;
@@ -32,40 +32,40 @@ import java.util.Optional;
*/
public class CakeInfo {
public final Optional<Long> id;
public final CakeToppingInfo cakeToppingInfo;
public final List<CakeLayerInfo> cakeLayerInfos;
public final Optional<Long> id;
public final CakeToppingInfo cakeToppingInfo;
public final List<CakeLayerInfo> cakeLayerInfos;
/**
* Constructor.
*/
public CakeInfo(Long id, CakeToppingInfo cakeToppingInfo, List<CakeLayerInfo> cakeLayerInfos) {
this.id = Optional.of(id);
this.cakeToppingInfo = cakeToppingInfo;
this.cakeLayerInfos = cakeLayerInfos;
}
/**
* Constructor.
*/
public CakeInfo(Long id, CakeToppingInfo cakeToppingInfo, List<CakeLayerInfo> cakeLayerInfos) {
this.id = Optional.of(id);
this.cakeToppingInfo = cakeToppingInfo;
this.cakeLayerInfos = cakeLayerInfos;
}
/**
* Constructor.
*/
public CakeInfo(CakeToppingInfo cakeToppingInfo, List<CakeLayerInfo> cakeLayerInfos) {
this.id = Optional.empty();
this.cakeToppingInfo = cakeToppingInfo;
this.cakeLayerInfos = cakeLayerInfos;
}
/**
* Constructor.
*/
public CakeInfo(CakeToppingInfo cakeToppingInfo, List<CakeLayerInfo> cakeLayerInfos) {
this.id = Optional.empty();
this.cakeToppingInfo = cakeToppingInfo;
this.cakeLayerInfos = cakeLayerInfos;
}
/**
* Calculate calories.
*/
public int calculateTotalCalories() {
var total = cakeToppingInfo != null ? cakeToppingInfo.calories : 0;
total += cakeLayerInfos.stream().mapToInt(c -> c.calories).sum();
return total;
}
/**
* Calculate calories.
*/
public int calculateTotalCalories() {
var total = cakeToppingInfo != null ? cakeToppingInfo.calories : 0;
total += cakeLayerInfos.stream().mapToInt(c -> c.calories).sum();
return total;
}
@Override
public String toString() {
return String.format("CakeInfo id=%d topping=%s layers=%s totalCalories=%d", id.orElse(-1L),
cakeToppingInfo, cakeLayerInfos, calculateTotalCalories());
}
@Override
public String toString() {
return String.format("CakeInfo id=%d topping=%s layers=%s totalCalories=%d", id.orElse(-1L),
cakeToppingInfo, cakeLayerInfos, calculateTotalCalories());
}
}
layers/src/main/java/com/iluwatar/layers/dto/CakeLayerInfo.java → layers/src/main/java/dto/CakeLayerInfo.java
+24 -24
View File
@@ -22,7 +22,7 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.iluwatar.layers.dto;
package dto;
import java.util.Optional;
@@ -31,30 +31,30 @@ import java.util.Optional;
*/
public class CakeLayerInfo {
public final Optional<Long> id;
public final String name;
public final int calories;
public final Optional<Long> id;
public final String name;
public final int calories;
/**
* Constructor.
*/
public CakeLayerInfo(Long id, String name, int calories) {
this.id = Optional.of(id);
this.name = name;
this.calories = calories;
}
/**
* Constructor.
*/
public CakeLayerInfo(Long id, String name, int calories) {
this.id = Optional.of(id);
this.name = name;
this.calories = calories;
}
/**
* Constructor.
*/
public CakeLayerInfo(String name, int calories) {
this.id = Optional.empty();
this.name = name;
this.calories = calories;
}
/**
* Constructor.
*/
public CakeLayerInfo(String name, int calories) {
this.id = Optional.empty();
this.name = name;
this.calories = calories;
}
@Override
public String toString() {
return String.format("CakeLayerInfo id=%d name=%s calories=%d", id.orElse(-1L), name, calories);
}
@Override
public String toString() {
return String.format("CakeLayerInfo id=%d name=%s calories=%d", id.orElse(-1L), name, calories);
}
}
layers/src/main/java/com/iluwatar/layers/dto/CakeToppingInfo.java → layers/src/main/java/dto/CakeToppingInfo.java
+26 -25
View File
@@ -22,7 +22,8 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.iluwatar.layers.dto;
package dto;
import java.util.Optional;
@@ -31,31 +32,31 @@ import java.util.Optional;
*/
public class CakeToppingInfo {
public final Optional<Long> id;
public final String name;
public final int calories;
public final Optional<Long> id;
public final String name;
public final int calories;
/**
* Constructor.
*/
public CakeToppingInfo(Long id, String name, int calories) {
this.id = Optional.of(id);
this.name = name;
this.calories = calories;
}
/**
* Constructor.
*/
public CakeToppingInfo(Long id, String name, int calories) {
this.id = Optional.of(id);
this.name = name;
this.calories = calories;
}
/**
* Constructor.
*/
public CakeToppingInfo(String name, int calories) {
this.id = Optional.empty();
this.name = name;
this.calories = calories;
}
/**
* Constructor.
*/
public CakeToppingInfo(String name, int calories) {
this.id = Optional.empty();
this.name = name;
this.calories = calories;
}
@Override
public String toString() {
return String.format("CakeToppingInfo id=%d name=%s calories=%d",
id.orElse(-1L), name, calories);
}
@Override
public String toString() {
return String.format("CakeToppingInfo id=%d name=%s calories=%d",
id.orElse(-1L), name, calories);
}
}
layers/src/main/java/com/iluwatar/layers/entity/Cake.java → layers/src/main/java/entity/Cake.java
+43 -43
View File
@@ -22,17 +22,17 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.iluwatar.layers.entity;
package entity;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import javax.persistence.OneToOne;
import jakarta.persistence.Entity;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.Id;
import jakarta.persistence.OneToMany;
import jakarta.persistence.OneToOne;
import jakarta.persistence.CascadeType;
import jakarta.persistence.FetchType;
/**
* Cake entity.
@@ -40,50 +40,50 @@ import javax.persistence.OneToOne;
@Entity
public class Cake {
@Id
@GeneratedValue
private Long id;
@Id
@GeneratedValue
private Long id;
@OneToOne(cascade = CascadeType.REMOVE)
private CakeTopping topping;
@OneToOne(cascade = CascadeType.REMOVE)
private CakeTopping topping;
@OneToMany(cascade = CascadeType.REMOVE, fetch = FetchType.EAGER)
private Set<CakeLayer> layers;
@OneToMany(cascade = CascadeType.REMOVE, fetch = FetchType.EAGER)
private Set<CakeLayer> layers;
public Cake() {
setLayers(new HashSet<>());
}
public Cake() {
setLayers(new HashSet<>());
}
public Long getId() {
return id;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public void setId(Long id) {
this.id = id;
}
public CakeTopping getTopping() {
return topping;
}
public CakeTopping getTopping() {
return topping;
}
public void setTopping(CakeTopping topping) {
this.topping = topping;
}
public void setTopping(CakeTopping topping) {
this.topping = topping;
}
public Set<CakeLayer> getLayers() {
return layers;
}
public Set<CakeLayer> getLayers() {
return layers;
}
public void setLayers(Set<CakeLayer> layers) {
this.layers = layers;
}
public void setLayers(Set<CakeLayer> layers) {
this.layers = layers;
}
public void addLayer(CakeLayer layer) {
this.layers.add(layer);
}
public void addLayer(CakeLayer layer) {
this.layers.add(layer);
}
@Override
public String toString() {
return String.format("id=%s topping=%s layers=%s", id, topping, layers.toString());
}
@Override
public String toString() {
return String.format("id=%s topping=%s layers=%s", id, topping, layers.toString());
}
}
layers/src/main/java/entity/CakeLayer.java
+63
View File
@@ -0,0 +1,63 @@
/*
* This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
*
* The MIT License
* Copyright © 2014-2022 Ilkka Seppälä
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package entity;
import jakarta.persistence.*;
import lombok.*;
/**
* CakeLayer entity.
*/
@Entity
@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@Builder
@EqualsAndHashCode
public class CakeLayer {
@Id
@GeneratedValue
private Long id;
private String name;
private int calories;
@ManyToOne(cascade = CascadeType.ALL)
private Cake cake;
public CakeLayer(String name, int calories) {
this.setName(name);
this.setCalories(calories);
}
@Override
public String toString() {
return String.format("id=%s name=%s calories=%d", id, name, calories);
}
}
layers/src/main/java/entity/CakeTopping.java
+64
View File
@@ -0,0 +1,64 @@
/*
* This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
*
* The MIT License
* Copyright © 2014-2022 Ilkka Seppälä
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package entity;
import jakarta.persistence.*;
import lombok.*;
/**
* CakeTopping entity.
*/
@Entity
@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@Builder
@EqualsAndHashCode
public class CakeTopping {
@Id
@GeneratedValue
private Long id;
private String name;
private int calories;
@OneToOne(cascade = CascadeType.ALL)
private Cake cake;
public CakeTopping(String name, int calories) {
this.setName(name);
this.setCalories(calories);
}
@Override
public String toString() {
return String.format("id=%s name=%s calories=%d", id, name, calories);
}
}
layers/src/main/java/com/iluwatar/layers/exception/CakeBakingException.java → layers/src/main/java/exception/CakeBakingException.java
+10 -7
View File
@@ -22,19 +22,22 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.iluwatar.layers.exception;
package exception;
import org.springframework.stereotype.Component;
/**
* Custom exception used in cake baking.
*/
@Component
public class CakeBakingException extends Exception {
private static final long serialVersionUID = 1L;
private static final long serialVersionUID = 1L;
public CakeBakingException() {
}
public CakeBakingException() {
}
public CakeBakingException(String message) {
super(message);
}
public CakeBakingException(String message) {
super(message);
}
}
layers/src/main/java/com/iluwatar/layers/service/CakeBakingService.java → layers/src/main/java/service/CakeBakingService.java
+39 -29
View File
@@ -22,46 +22,56 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.iluwatar.layers.service;
package service;
import dto.CakeInfo;
import dto.CakeLayerInfo;
import dto.CakeToppingInfo;
import exception.CakeBakingException;
import org.springframework.stereotype.Service;
import com.iluwatar.layers.dto.CakeInfo;
import com.iluwatar.layers.dto.CakeLayerInfo;
import com.iluwatar.layers.dto.CakeToppingInfo;
import com.iluwatar.layers.exception.CakeBakingException;
import java.util.List;
/**
* Service for cake baking operations.
*/
@Service
public interface CakeBakingService {
/**
* Bakes new cake according to parameters.
*/
void bakeNewCake(CakeInfo cakeInfo) throws CakeBakingException;
/**
* Bakes new cake according to parameters.
*/
void bakeNewCake(CakeInfo cakeInfo) throws CakeBakingException;
/**
* Get all cakes.
*/
List<CakeInfo> getAllCakes();
/**
* Get all cakes.
*/
List<CakeInfo> getAllCakes();
/**
* Store new cake topping.
*/
void saveNewTopping(CakeToppingInfo toppingInfo);
/**
* Store new cake topping.
*/
void saveNewTopping(CakeToppingInfo toppingInfo);
/**
* Get available cake toppings.
*/
List<CakeToppingInfo> getAvailableToppings();
/**
* Get available cake toppings.
*/
List<CakeToppingInfo> getAvailableToppings();
/**
* Add new cake layer.
*/
void saveNewLayer(CakeLayerInfo layerInfo);
/**
* Add new cake layer.
*/
void saveNewLayer(CakeLayerInfo layerInfo);
/**
* Get available cake layers.
*/
List<CakeLayerInfo> getAvailableLayers();
void deleteAllCakes();
void deleteAllLayers();
void deleteAllToppings();
/**
* Get available cake layers.
*/
List<CakeLayerInfo> getAvailableLayers();
}
layers/src/main/java/service/CakeBakingServiceImpl.java
+189
View File
@@ -0,0 +1,189 @@
/*
* This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
*
* The MIT License
* Copyright © 2014-2022 Ilkka Seppälä
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package service;
import dao.CakeDao;
import dao.CakeLayerDao;
import dao.CakeToppingDao;
import dto.CakeInfo;
import dto.CakeLayerInfo;
import dto.CakeToppingInfo;
import entity.Cake;
import entity.CakeLayer;
import entity.CakeTopping;
import exception.CakeBakingException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
/**
* Implementation of CakeBakingService.
*/
@Service
@Transactional
public class CakeBakingServiceImpl implements CakeBakingService {
private final CakeDao cakeDao;
private final CakeLayerDao cakeLayerDao;
private final CakeToppingDao cakeToppingDao;
@Autowired
public CakeBakingServiceImpl(CakeDao cakeDao, CakeLayerDao cakeLayerDao, CakeToppingDao cakeToppingDao) {
this.cakeDao = cakeDao;
this.cakeLayerDao = cakeLayerDao;
this.cakeToppingDao = cakeToppingDao;
}
@Override
public void bakeNewCake(CakeInfo cakeInfo) throws CakeBakingException {
var allToppings = getAvailableToppingEntities();
var matchingToppings =
allToppings.stream().filter(t -> t.getName().equals(cakeInfo.cakeToppingInfo.name))
.toList();
if (matchingToppings.isEmpty()) {
throw new CakeBakingException(String.format("Topping %s is not available",
cakeInfo.cakeToppingInfo.name));
}
var allLayers = getAvailableLayerEntities();
Set<CakeLayer> foundLayers = new HashSet<>();
for (var info : cakeInfo.cakeLayerInfos) {
var found = allLayers.stream().filter(layer -> layer.getName().equals(info.name)).findFirst();
if (found.isEmpty()) {
throw new CakeBakingException(String.format("Layer %s is not available", info.name));
} else {
foundLayers.add(found.get());
}
}
var topping = cakeToppingDao.findById(matchingToppings.iterator().next().getId());
if (topping.isPresent()) {
var cake = new Cake();
cake.setTopping(topping.get());
cake.setLayers(foundLayers);
cakeDao.save(cake);
topping.get().setCake(cake);
cakeToppingDao.save(topping.get());
Set<CakeLayer> foundLayersToUpdate = new HashSet<>(foundLayers); // copy set to avoid a ConcurrentModificationException
for (var layer : foundLayersToUpdate) {
layer.setCake(cake);
cakeLayerDao.save(layer);
}
} else {
throw new CakeBakingException(String.format("Topping %s is not available",
cakeInfo.cakeToppingInfo.name));
}
}
@Override
public void saveNewTopping(CakeToppingInfo toppingInfo) {
cakeToppingDao.save(new CakeTopping(toppingInfo.name, toppingInfo.calories));
}
@Override
public void saveNewLayer(CakeLayerInfo layerInfo) {
cakeLayerDao.save(new CakeLayer(layerInfo.name, layerInfo.calories));
}
private List<CakeTopping> getAvailableToppingEntities() {
List<CakeTopping> result = new ArrayList<>();
for (CakeTopping topping : cakeToppingDao.findAll()) {
if (topping.getCake() == null) {
result.add(topping);
}
}
return result;
}
@Override
public List<CakeToppingInfo> getAvailableToppings() {
List<CakeToppingInfo> result = new ArrayList<>();
for (CakeTopping next : cakeToppingDao.findAll()) {
if (next.getCake() == null) {
result.add(new CakeToppingInfo(next.getId(), next.getName(), next.getCalories()));
}
}
return result;
}
private List<CakeLayer> getAvailableLayerEntities() {
List<CakeLayer> result = new ArrayList<>();
for (CakeLayer next : cakeLayerDao.findAll()) {
if (next.getCake() == null) {
result.add(next);
}
}
return result;
}
@Override
public List<CakeLayerInfo> getAvailableLayers() {
List<CakeLayerInfo> result = new ArrayList<>();
for (CakeLayer next : cakeLayerDao.findAll()) {
if (next.getCake() == null) {
result.add(new CakeLayerInfo(next.getId(), next.getName(), next.getCalories()));
}
}
return result;
}
@Override
public void deleteAllCakes() {
cakeDao.deleteAll();
}
@Override
public void deleteAllLayers() {
cakeLayerDao.deleteAll();
}
@Override
public void deleteAllToppings() {
cakeToppingDao.deleteAll();
}
@Override
public List<CakeInfo> getAllCakes() {
List<CakeInfo> result = new ArrayList<>();
for (Cake cake : cakeDao.findAll()) {
var cakeToppingInfo =
new CakeToppingInfo(cake.getTopping().getId(), cake.getTopping().getName(), cake
.getTopping().getCalories());
List<CakeLayerInfo> cakeLayerInfos = new ArrayList<>();
for (var layer : cake.getLayers()) {
cakeLayerInfos.add(new CakeLayerInfo(layer.getId(), layer.getName(), layer.getCalories()));
}
var cakeInfo = new CakeInfo(cake.getId(), cakeToppingInfo, cakeLayerInfos);
result.add(cakeInfo);
}
return result;
}
}
layers/src/main/java/com/iluwatar/layers/view/CakeViewImpl.java → layers/src/main/java/view/CakeViewImpl.java
+13 -11
View File
@@ -22,24 +22,26 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.iluwatar.layers.view;
package view;
import com.iluwatar.layers.service.CakeBakingService;
import lombok.extern.slf4j.Slf4j;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import service.CakeBakingService;
/**
* View implementation for displaying cakes.
*/
@Slf4j
public class CakeViewImpl implements View {
private final CakeBakingService cakeBakingService;
private final CakeBakingService cakeBakingService;
public CakeViewImpl(CakeBakingService cakeBakingService) {
this.cakeBakingService = cakeBakingService;
}
private static final Logger LOGGER = LoggerFactory.getLogger(CakeViewImpl.class);
public void render() {
cakeBakingService.getAllCakes().forEach(cake -> LOGGER.info(cake.toString()));
}
public CakeViewImpl(CakeBakingService cakeBakingService) {
this.cakeBakingService = cakeBakingService;
}
public void render() {
cakeBakingService.getAllCakes().forEach(cake -> LOGGER.info(cake.toString()));
}
}
layers/src/main/java/com/iluwatar/layers/view/View.java → layers/src/main/java/view/View.java
+2 -2
View File
@@ -22,13 +22,13 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.iluwatar.layers.view;
package view;
/**
* View interface.
*/
public interface View {
void render();
void render();
}