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When I started Spring Boot and GraphQL API creating process I faced issue related to Annotation. @component. ### QueryResolver .class_ public class TotalQueryResolver implements GraphQLQueryResolver {
private final CategoryRepository categoryRepository;
public Iterable<Category> allCategories(){
return categoryRepository.findAll();
}
public Category category(Integer id){
return categoryRepository.findById(id).orElseGet(null);
}
}MutationResolver.class @Component
public class TotalMutationResolver implements GraphQLMutationResolver {
@Autowired
private CategoryRepository categoryRepository;
public Category addCategory(String name) {
Category category = new Category();
category.setName(name);
return categoryRepository.saveAndFlush(category);
}
public List<Category> allCategories(){
return categoryRepository.findAll();
}
public Category updateCategory(Long id, String name){
Category category = new Category();
category.setCategory_id(id);
category.setName(name);
return categoryRepository.saveAndFlush(category);
}
public Boolean deleteCategory(Integer id){
categoryRepository.deleteById(id);
return true;
}
}When I compile the source no any error, however in broweser. (404 error) type Query {
allCategories: [Category]
category(id: ID!): Category
}
type Mutation {
addCategory(name: String!): Category!
updateCategory(id: ID!, name: String!): Category!
deleteCategory(id: ID!): Boolean
}
type Category {
id: ID
name: String!
}In attachment figure, after adding @component result;
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Answered by
vojtapol
Oct 15, 2020
Replies: 5 comments
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I don't understand what are you asking. Can you paste the original exception with the stack-trace here instead of a screenshot from IntelliJ? |
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0 replies
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@vojtapol thank you for response. I attached here. Regarding issues in the code . @RequiredArgsConstructor
@Component
public class TotalQueryResolver implements GraphQLQueryResolver {
private final CategoryRepository categoryRepository;
(same as before source code)
}@Component
public class TotalMutationResolver implements GraphQLMutationResolver {
@Autowired
private CategoryRepository categoryRepository;
}after compile my source code. |
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More .... source here. |
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The exception is telling you that there is no resolver method or field called This is the POJO: @Data
@AllArgsConstructor
@NoArgsConstructor
@Getter
@Setter
@ToString
@Entity
@Table(name = "category")
public class Category implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "ID", nullable = false, unique = true)
private Long category_id;
private String name;
private String value;
private String type;
private String icon;
private String slug;
@OneToMany(cascade = CascadeType.ALL)
@JoinColumn(name = "category_id")
private Collection<Product> products = new ArrayList<>();
}You have two options:
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Answer selected by
vojtapol
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@vojtapol |
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The exception is telling you that there is no resolver method or field called
idorgetId()on theCategorytype.This is the POJO: