Package com.example.blogs.app.api.comment.service

Class CommentServiceImpl

java.lang.Object

com.example.blogs.app.api.comment.service.CommentServiceImpl

All Implemented Interfaces:

CommentService

@Service
public class CommentServiceImpl
extends Object
implements CommentService

Orchestrates comment retrieval operations by coordinating with the comment repository adapter.

Constructor Summary

Constructors

Constructor	Description
CommentServiceImpl()

Method Summary

Modifier and Type	Method	Description
CommentDTO	createComment(Long postId, Long userId, CommentWriteRequestDTO requestDTO)	Creates a new comment on a specific post.
void	deleteCommentById(Long commentId)	Deletes a comment by its ID.
List<CommentEntity>	getCommentsByPostId(Long postId)	Retrieves all comments associated with a specific post.
CommentDTO	updateCommentById(Long commentId, CommentWriteRequestDTO requestDTO)	Updates a comment by its ID with new content.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

CommentServiceImpl

public CommentServiceImpl()

Method Details

getCommentsByPostId

public List<CommentEntity> getCommentsByPostId(Long postId)

Retrieves all comments associated with a specific post. Delegates to the repository adapter for data retrieval.

Specified by:

getCommentsByPostId in interface CommentService

Parameters:

postId - the ID of the post

Returns:

list of comments for the post

createComment

public CommentDTO createComment(Long postId,
 Long userId,
 CommentWriteRequestDTO requestDTO)

Creates a new comment on a specific post. Constructs the comment entity, persists it via the repository adapter, and converts to DTO.

Specified by:

createComment in interface CommentService

Parameters:

postId - the ID of the post to comment on

userId - the ID of the user creating the comment

requestDTO - request containing the comment content

Returns:

newly created comment as DTO

deleteCommentById

public void deleteCommentById(Long commentId)

Deletes a comment by its ID. Delegates to the repository adapter for deletion and logs the operation.

Specified by:

deleteCommentById in interface CommentService

Parameters:

commentId - the ID of the comment to delete

updateCommentById

public CommentDTO updateCommentById(Long commentId,
 CommentWriteRequestDTO requestDTO)

Updates a comment by its ID with new content. Retrieves the comment, updates its content, marks it as edited, and persists the changes.

Specified by:

updateCommentById in interface CommentService

Parameters:

commentId - the ID of the comment to update

requestDTO - request containing the updated comment content

Returns:

updated comment as DTO

Throws:

FailedToUpdateCommentException - if the update operation fails