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added quantityChange validation, product validation, checking existing object in db, throwing exeption

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This commit is contained in:
prgres 2019-01-22 02:42:50 +01:00
parent 0d4b2dcf75
commit c2badfe536
13 changed files with 468 additions and 238 deletions
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2
.idea/compiler.xml
View File

@ -9,7 +9,7 @@
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349
.idea/workspace.xml
View File

@ -2,7 +2,20 @@
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@ -144,17 +141,20 @@
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<provider selected="true" editor-type-id="text-editor">
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<entry file="file://$PROJECT_DIR$/pom.xml">
<provider selected="true" editor-type-id="text-editor">
<state relative-caret-position="603">
<caret line="51" selection-start-line="51" selection-end-line="51" />
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<provider selected="true" editor-type-id="text-editor">
<state relative-caret-position="198">
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9
pom.xml
View File

@ -49,6 +49,15 @@
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
<configuration>
<release>11</release> <!--<release>10</release>-->
</configuration>
</plugin>
</plugins>
</build>

58
src/main/java/com/dino/scrum/sysmag/controller/ProductController.java
View File

@ -3,12 +3,15 @@ package com.dino.scrum.sysmag.controller;
import com.dino.scrum.sysmag.model.Product;
import com.dino.scrum.sysmag.model.dto.IdDto;
import com.dino.scrum.sysmag.model.dto.QuantityChange;
import com.dino.scrum.sysmag.service.ProductService;
import com.dino.scrum.sysmag.service.ProductServiceImpl;
import com.dino.scrum.sysmag.validator.QuantityChangeValidator;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.data.domain.Pageable;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.server.ResponseStatusException;
import javax.validation.Valid;
import java.util.Collections;
import java.util.Map;
@ -16,53 +19,70 @@ import java.util.Map;
* Created by prgres on 2019-01-12.
*/
@Controller
@RestController
@RequestMapping(value = "/api")
public class ProductController {
private final ProductServiceImpl productService;
private final
ProductServiceImpl productService;
private final
QuantityChangeValidator quantityChangeValidator;
@Autowired
public ProductController(ProductServiceImpl productService) {
public ProductController(ProductServiceImpl productService, QuantityChangeValidator quantityChangeValidator) {
this.productService = productService;
this.quantityChangeValidator = quantityChangeValidator;
}
@GetMapping(value = "/get-all")
public @ResponseBody
Iterable<Product> getAll(){
return productService.getAllProducts();
public Iterable<Product> getAll(Pageable pageable) {
return productService.getAll(pageable);
}
@GetMapping(value = "/get-price-of-all")
public @ResponseBody
public
Map getPriceOfAllProducts(){
return Collections.singletonMap("price-of-all", productService.getPriceOfAllProducts());
return Collections.singletonMap("price-of-all", productService.getPriceOfAll());
}
@PostMapping(value = "/product/add")
public @ResponseBody
Product addProduct(@RequestBody Product product){
return productService.addProduct(product);
public Product addProduct(@Valid @RequestBody Product product) {
try {
return productService.add(product);
} catch (Exception e) {
throw new ResponseStatusException(HttpStatus.BAD_REQUEST, e.toString());
}
}
@DeleteMapping(value = "/product/delete")
public @ResponseBody
public
String deleteProduct(@RequestBody IdDto id){
productService.deleteProduct(id.getId());
try {
productService.delete(id.getId());
return "Deleted" + id;
} catch (Exception e) {
throw new ResponseStatusException(HttpStatus.BAD_REQUEST, e.toString());
}
}
@GetMapping(value = "/product/get-by-id")
public @ResponseBody
public
Product getById(@RequestBody IdDto id){
try {
return productService.getById(id.getId());
} catch (Exception e) {
throw new ResponseStatusException(HttpStatus.BAD_REQUEST, e.toString());
}
}
@PostMapping(value = "/product/change-quantity")
public @ResponseBody
public
Product changeQuantity(@RequestBody QuantityChange quantityChange){
try {
quantityChangeValidator.validate(quantityChange);
return productService.changeQuantity(quantityChange);
} catch (Exception e) {
throw new ResponseStatusException(HttpStatus.BAD_REQUEST, e.toString());
}
}
}

8
src/main/java/com/dino/scrum/sysmag/exception/ProductNotFoundException.java Normal file
View File

@ -0,0 +1,8 @@
package com.dino.scrum.sysmag.exception;
/**
* Created by prgres on 2019-01-21.
*/
public class ProductNotFoundException extends ClassNotFoundException {
}

21
src/main/java/com/dino/scrum/sysmag/model/Product.java
View File

@ -5,6 +5,10 @@ import lombok.Setter;
import lombok.ToString;
import javax.persistence.*;
import javax.validation.constraints.DecimalMin;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
import java.math.BigDecimal;
/**
@ -23,16 +27,33 @@ public class Product {
@Column(name = "id")
private Long id;
@NotNull(message = "name cannot be null")
@Size(min = 2, message = "name cannot be shorter that 2")
@Column(name = "name")
private String name;
@NotNull(message = "price cannot be null")
@DecimalMin(value = "0.00", message = "price cannot be under 0.00")
@Column(name = "price")
private BigDecimal price;
@NotNull(message = "quantity cannot be null")
@Min(value = 0, message = "quantity cannot be under 0")
@Column(name = "quantity")
private long quantity;
@NotNull(message = "quantityMax cannot be null")
@Min(value = 1, message = "quantityMax cannot be under 1")
@Column(name = "quantityMax")
private long quantityMax;
@NotNull(message = "image_link cannot be null")
@Column(name = "image_link")
private String imageLink;
public Product setChangeQuantity(long change) {
this.quantity += change;
return this;
}
}

1
src/main/java/com/dino/scrum/sysmag/model/dto/IdDto.java
View File

@ -8,5 +8,6 @@ import lombok.Getter;
@Getter
public class IdDto {
long id;
}

2
src/main/java/com/dino/scrum/sysmag/model/dto/QuantityChange.java
View File

@ -1,5 +1,6 @@
package com.dino.scrum.sysmag.model.dto;
import lombok.EqualsAndHashCode;
import lombok.Getter;
/**
@ -7,6 +8,7 @@ import lombok.Getter;
*/
@Getter
@EqualsAndHashCode
public class QuantityChange {
long id;
long change;

13
src/main/java/com/dino/scrum/sysmag/repository/ProductRepository.java
View File

@ -1,16 +1,19 @@
package com.dino.scrum.sysmag.repository;
import com.dino.scrum.sysmag.model.Product;
import org.springframework.data.repository.CrudRepository;
import org.springframework.data.repository.PagingAndSortingRepository;
import org.springframework.stereotype.Repository;
import java.math.BigDecimal;
import java.util.List;
import java.util.Optional;
/**
* Created by prgres on 2019-01-12.
*/
@Repository
public interface ProductRepository extends PagingAndSortingRepository<Product, Long> {
boolean existsByName(String name);
public interface ProductRepository extends CrudRepository<Product, Long> {
List<Product> findAll();
Optional<Product> findByName(String name);
Product findById(long id);
}

23
src/main/java/com/dino/scrum/sysmag/service/ProductService.java
View File

@ -2,19 +2,24 @@ package com.dino.scrum.sysmag.service;
import com.dino.scrum.sysmag.model.Product;
import com.dino.scrum.sysmag.model.dto.QuantityChange;
import java.util.List;
import java.util.Optional;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Slice;
/**
* Created by prgres on 2019-01-12.
*/
public interface ProductService {
List<Product> getAllProducts();
Product changeQuantity(QuantityChange quantityChange);
Product getById(Long id);
float getPriceOfAllProducts();
Product addProduct(Product product);
void deleteProduct(long id);
Slice<Product> getAll(Pageable pageable);
Product changeQuantity(QuantityChange quantityChange) throws Exception;
Product getById(Long id) throws Exception;
Product add(Product product) throws Exception;
float getPriceOfAll();
void delete(long id) throws Exception;
}

54
src/main/java/com/dino/scrum/sysmag/service/ProductServiceImpl.java
View File

@ -3,14 +3,15 @@ package com.dino.scrum.sysmag.service;
import com.dino.scrum.sysmag.model.Product;
import com.dino.scrum.sysmag.model.dto.QuantityChange;
import com.dino.scrum.sysmag.repository.ProductRepository;
import com.dino.scrum.sysmag.validator.ProductValidator;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Slice;
import org.springframework.data.domain.Sort;
import org.springframework.stereotype.Service;
import javax.persistence.EntityNotFoundException;
import java.math.BigDecimal;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;
/**
* Created by prgres on 2019-01-12.
@ -19,57 +20,60 @@ import java.util.stream.Collectors;
@Service
public class ProductServiceImpl implements ProductService {
private final ProductRepository productRepository;
private final
ProductRepository productRepository;
private final
ProductValidator productValidator;
@Autowired
public ProductServiceImpl(ProductRepository productRepository) {
public ProductServiceImpl(ProductRepository productRepository, ProductValidator productValidator) {
this.productRepository = productRepository;
this.productValidator = productValidator;
}
@Override
public List<Product> getAllProducts() {
return productRepository.findAll();
public Slice<Product> getAll(Pageable pageable) {
if (pageable.getSort().isUnsorted()) {
pageable = PageRequest.of(pageable.getPageNumber(), pageable.getPageSize(), new Sort(Sort.Direction.ASC, "id"));
}
return productRepository.findAll(pageable);
}
@Override
public Product changeQuantity(QuantityChange quantityChange) {
return productRepository.findById(quantityChange.getId())
.map(product -> {
product.setQuantity(
product.getQuantity() + quantityChange.getChange()
);
return productRepository.save(product);
}).orElse(null);
public Product changeQuantity(QuantityChange quantityChange) throws Exception {
productValidator.checkIfExists(quantityChange.getId());
return productRepository.findById(quantityChange.getId()).setChangeQuantity(quantityChange.getChange());
}
@Override
public Product getById(Long id) {
return productRepository.findById(id).orElse(null);
public Product getById(Long id) throws Exception {
productValidator.checkIfExists(id);
return productRepository.findById(id.longValue());
}
@Override
public float getPriceOfAllProducts() {
public float getPriceOfAll() {
BigDecimal result = new BigDecimal(0);
List<Product> tempProductList = productRepository.findAll();
Iterable<Product> tempProductList = productRepository.findAll();
for (Product product : tempProductList) {
result = result.add(
product.getPrice()
.multiply( new BigDecimal(product.getQuantity())));
}
return result.floatValue();
}
@Override
public Product addProduct(Product product) {
public Product add(Product product) throws Exception {
productValidator.checkIfExists(product.getName());
return productRepository.save(product);
}
@Override
public void deleteProduct(long id) {
public void delete(long id) throws Exception {
productValidator.checkIfExists(id);
productRepository.deleteById(id);
}
}

38
src/main/java/com/dino/scrum/sysmag/validator/ProductValidator.java Normal file
View File

@ -0,0 +1,38 @@
package com.dino.scrum.sysmag.validator;
import com.dino.scrum.sysmag.repository.ProductRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
/**
* Created by prgres on 2019-01-22.
*/
@Component
public class ProductValidator {
private final ProductRepository productRepository;
@Autowired
public ProductValidator(ProductRepository productRepository) {
this.productRepository = productRepository;
}
private boolean existsById(long id) {
return productRepository.existsById(id);
}
private boolean existsByName(String name) {
return productRepository.existsByName(name);
}
public void checkIfExists(long id) throws Exception {
if (existsById(id))
throw new Exception("Product with id: " + id + " not found");
}
public void checkIfExists(String name) throws Exception {
if (existsByName(name))
throw new Exception("Product " + name + " already exists");
}
}

44
src/main/java/com/dino/scrum/sysmag/validator/QuantityChangeValidator.java Normal file
View File

@ -0,0 +1,44 @@
package com.dino.scrum.sysmag.validator;
import com.dino.scrum.sysmag.model.Product;
import com.dino.scrum.sysmag.model.dto.QuantityChange;
import com.dino.scrum.sysmag.service.ProductServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
/**
* Created by prgres on 2019-01-20.
*/
@Component
public class QuantityChangeValidator {
private final
ProductServiceImpl productService;
@Autowired
public QuantityChangeValidator(ProductServiceImpl productService) {
this.productService = productService;
}
public void validate(QuantityChange quantityChange) throws Exception {
Product product = productService.getById(quantityChange.getId());
if (ifUnderStock(product.getQuantity(), quantityChange.getChange())) {
throw new RuntimeException("Too low product with id: " + quantityChange.getId() + " on stock");
}
if (ifAboveMaxLimitStock(product.getQuantity(), product.getQuantityMax(), quantityChange.getChange())) {
throw new RuntimeException("Over max quantity limit of product with id: " + quantityChange.getId());
}
}
private boolean ifUnderStock(long quantityOfProduct, long quantityChange) {
return ((quantityOfProduct + quantityChange) < 0);
}
private boolean ifAboveMaxLimitStock(long quantityOfProduct, long maxQuantityOfProduct, long quantityChange) {
return ((quantityOfProduct + quantityChange) > maxQuantityOfProduct);
}
}