OpenIsle/src/main/java/com/openisle/repository/CommentRepository.java

package com.openisle.repository;

import com.openisle.model.Comment;
import com.openisle.model.Post;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.repository.JpaRepository;
import com.openisle.model.User;

import java.util.List;

public interface CommentRepository extends JpaRepository<Comment, Long> {
    List<Comment> findByPostAndParentIsNullOrderByCreatedAtAsc(Post post);
    List<Comment> findByParentOrderByCreatedAtAsc(Comment parent);
    List<Comment> findByAuthorOrderByCreatedAtDesc(User author, Pageable pageable);
    List<Comment> findByContentContainingIgnoreCase(String keyword);

    @org.springframework.data.jpa.repository.Query("SELECT DISTINCT c.author FROM Comment c WHERE c.post = :post")
    java.util.List<User> findDistinctAuthorsByPost(@org.springframework.data.repository.query.Param("post") Post post);
}