Category CRUD is done successfully.

Author: manirDev

pom.xml

@@ -42,6 +42,13 @@
 			<artifactId>lombok</artifactId>
 			<optional>true</optional>
 		</dependency>
+		<!-- https://mvnrepository.com/artifact/org.modelmapper/modelmapper -->
+		<dependency>
+			<groupId>org.modelmapper</groupId>
+			<artifactId>modelmapper</artifactId>
+			<version>3.1.0</version>
+		</dependency>
+
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-test</artifactId>

src/main/java/com/manir/springbootecommercerestapi/SpringBootECommerceRestApiApplication.java

@@ -1,13 +1,21 @@
 package com.manir.springbootecommercerestapi;
 
+import org.modelmapper.ModelMapper;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
 
 @SpringBootApplication
 public class SpringBootECommerceRestApiApplication {
 
 	public static void main(String[] args) {
+
 		SpringApplication.run(SpringBootECommerceRestApiApplication.class, args);
 	}
 
+	@Bean
+	public ModelMapper modelMapper(){
+		return new ModelMapper();
+	}
+
 }

src/main/java/com/manir/springbootecommercerestapi/controller/CategoryController.java

@@ -0,0 +1,55 @@
+package com.manir.springbootecommercerestapi.controller;
+
+import com.manir.springbootecommercerestapi.dto.CategoryDto;
+import com.manir.springbootecommercerestapi.service.CategoryService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+
+@RestController
+@RequestMapping(value = "api/v1/categories")
+public class CategoryController {
+
+    @Autowired
+    private CategoryService categoryService;
+
+    //create category api
+    @PostMapping("/createCategory")
+    public ResponseEntity<CategoryDto> createCategory(@RequestBody CategoryDto categoryDto){
+        CategoryDto responseCategory = categoryService.createCategory(categoryDto);
+        return new ResponseEntity<>(responseCategory, HttpStatus.CREATED);
+    }
+
+    //get all categories api
+    @GetMapping("/getAllCategory")
+    public List<CategoryDto> getAllCategory(){
+        List<CategoryDto> categoryDtoList = categoryService.getAllCategory();
+        return categoryDtoList;
+    }
+
+    //get category by id api
+    @GetMapping("{categoryId}")
+    public ResponseEntity<CategoryDto> getCatecoryById(@PathVariable Long categoryId){
+        CategoryDto responseCategory = categoryService.getCategoryById(categoryId);
+        return ResponseEntity.ok(responseCategory);
+    }
+
+    //update category api
+    @PutMapping("/updateCategory/{categoryId}")
+    public ResponseEntity<CategoryDto> updateCategory(@RequestBody CategoryDto categoryDto,
+                                                      @PathVariable Long categoryId){
+        CategoryDto responseCategory = categoryService.updateCategory(categoryDto, categoryId);
+        return  new ResponseEntity<>(responseCategory, HttpStatus.OK);
+    }
+
+    //delete category api
+    @DeleteMapping("/deleteCategory/{categoryId}")
+    public ResponseEntity<String> deleteCategory(@PathVariable Long categoryId){
+        categoryService.deleteCategory(categoryId);
+        return ResponseEntity.ok("Category with id: "+ categoryId +  " is deleted successfully:)");
+    }
+}

src/main/java/com/manir/springbootecommercerestapi/dto/CategoryDto.java

@@ -0,0 +1,13 @@
+package com.manir.springbootecommercerestapi.dto;
+
+import lombok.Data;
+
+@Data
+public class CategoryDto {
+
+    private Long id;
+    private String title;
+    private String keywords;
+    private String description;
+    private String status;
+}

src/main/java/com/manir/springbootecommercerestapi/exception/ResourceNotFoundException.java

@@ -0,0 +1,24 @@
+package com.manir.springbootecommercerestapi.exception;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@ResponseStatus(value = HttpStatus.BAD_REQUEST)
+public class ResourceNotFoundException extends RuntimeException{
+   private String resourceName;
+   private Long fieldValue;
+
+    public ResourceNotFoundException(String resourceName, Long fieldValue) {
+        super(String.format("%s with id : %s is not found !", resourceName, fieldValue));
+        this.resourceName = resourceName;
+        this.fieldValue = fieldValue;
+    }
+
+    public String getResourceName() {
+        return resourceName;
+    }
+
+    public Long getFieldValue() {
+        return fieldValue;
+    }
+}

src/main/java/com/manir/springbootecommercerestapi/repository/CategoryRepository.java

@@ -0,0 +1,7 @@
+package com.manir.springbootecommercerestapi.repository;
+
+import com.manir.springbootecommercerestapi.resource.Category;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface CategoryRepository extends JpaRepository<Category, Long> {
+}

src/main/java/com/manir/springbootecommercerestapi/resource/Category.java

@@ -0,0 +1,27 @@
+package com.manir.springbootecommercerestapi.resource;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+
+@AllArgsConstructor
+@NoArgsConstructor
+@Data
+@Entity
+@Table(name = "categories")
+public class Category {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+    @Column(name = "title")
+    private String title;
+    @Column(name = "keywords")
+    private String keywords;
+    @Column(name = "description")
+    private String description;
+    @Column(name = "status")
+    private String status;
+}

src/main/java/com/manir/springbootecommercerestapi/service/CategoryService.java

@@ -0,0 +1,16 @@
+package com.manir.springbootecommercerestapi.service;
+
+import com.manir.springbootecommercerestapi.dto.CategoryDto;
+
+import java.util.List;
+
+public interface CategoryService {
+
+    CategoryDto createCategory(CategoryDto categoryDto);
+    List<CategoryDto> getAllCategory();
+    CategoryDto getCategoryById(Long categoryId);
+    CategoryDto updateCategory(CategoryDto categoryDto, Long categoryId);
+    void deleteCategory(Long categoryId);
+
+
+}

src/main/java/com/manir/springbootecommercerestapi/service/Impl/CategoryServiceImpl.java

@@ -0,0 +1,96 @@
+package com.manir.springbootecommercerestapi.service.Impl;
+
+import com.manir.springbootecommercerestapi.dto.CategoryDto;
+import com.manir.springbootecommercerestapi.exception.ResourceNotFoundException;
+import com.manir.springbootecommercerestapi.repository.CategoryRepository;
+import com.manir.springbootecommercerestapi.resource.Category;
+import com.manir.springbootecommercerestapi.service.CategoryService;
+import org.modelmapper.ModelMapper;
+import org.springframework.stereotype.Service;
+
+import javax.annotation.Resource;
+import java.util.List;
+import java.util.stream.Collectors;
+
+@Service
+public class CategoryServiceImpl implements CategoryService {
+
+    @Resource(name = "categoryRepository")
+    private CategoryRepository categoryRepository;
+    @Resource(name = "modelMapper")
+    private ModelMapper modelMapper;
+
+    @Override
+    public CategoryDto createCategory(CategoryDto categoryDto) {
+        //map dto to entity
+        Category category = mapToEntity(categoryDto);
+        //save entity
+        Category newCategory = categoryRepository.save(category);
+        //map back entity to dto
+        CategoryDto responseCategoryDto = mapToDto(newCategory);
+
+        return responseCategoryDto;
+    }
+
+    @Override
+    public List<CategoryDto> getAllCategory() {
+
+        List<Category> categories = categoryRepository.findAll();
+        //map all categories to dto
+        List<CategoryDto> categoryDtoList = categories.stream()
+                                                      .map(category -> mapToDto(category))
+                                                      .collect(Collectors.toList());
+
+        return categoryDtoList;
+    }
+
+    @Override
+    public CategoryDto getCategoryById(Long categoryId) {
+
+        Category category = categoryRepository.findById(categoryId)
+                                              .orElseThrow(
+                                                      () -> new ResourceNotFoundException("Category", categoryId)
+                                              );
+        //map entity to dto
+        CategoryDto responseCategory = mapToDto(category);
+
+        return responseCategory;
+    }
+
+    @Override
+    public CategoryDto updateCategory(CategoryDto categoryDto, Long categoryId) {
+
+        Category category = categoryRepository.findById(categoryId)
+                                              .orElseThrow(
+                                                    () -> new ResourceNotFoundException("Category", categoryId)
+                                              );
+
+        category.setTitle(categoryDto.getTitle());
+        category.setDescription(categoryDto.getDescription());
+        category.setKeywords(categoryDto.getKeywords());
+        category.setStatus(categoryDto.getStatus());
+        Category updatedCategory = categoryRepository.save(category);
+        //map entity to dto
+        CategoryDto responseCategory = mapToDto(updatedCategory);
+        return responseCategory;
+    }
+
+    @Override
+    public void deleteCategory(Long categoryId) {
+        Category category = categoryRepository.findById(categoryId)
+                                              .orElseThrow(
+                                                    () -> new ResourceNotFoundException("Category", categoryId)
+                                              );
+        categoryRepository.delete(category);
+    }
+
+    private CategoryDto mapToDto(Category category){
+        CategoryDto categoryDto = modelMapper.map(category, CategoryDto.class);
+        return categoryDto;
+    }
+
+    private Category mapToEntity(CategoryDto categoryDto){
+        Category category = modelMapper.map(categoryDto, Category.class);
+        return  category;
+    }
+}

src/main/resources/application.properties

@@ -1 +1,10 @@
+spring.jpa.database-platform=org.hibernate.dialect.MySQL5InnoDBDialect
+spring.jpa.show-sql =true
+spring.jpa.properties.hibernate.format_sql= true
+spring.datasource.password=Password123#@!
+spring.datasource.username=root
+spring.datasource.url=jdbc:mysql://localhost:3306/springBootEcommerceRestApi?serverTimezone=UTC
+spring.jpa.hibernate.ddl-auto=update
+
+#logging.level.org.springframework.security=DEBUG