626 lines
20 KiB
Java
626 lines
20 KiB
Java
/**
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*
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*/
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package de.bstly.board.businesslogic;
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import java.time.Instant;
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import java.util.List;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.data.domain.Page;
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import org.springframework.data.domain.PageImpl;
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import org.springframework.data.domain.PageRequest;
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import org.springframework.data.domain.Sort;
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import org.springframework.data.domain.Sort.Order;
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import org.springframework.stereotype.Component;
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import org.springframework.util.StringUtils;
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import com.google.common.collect.Lists;
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import com.querydsl.core.types.OrderSpecifier;
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import com.querydsl.jpa.impl.JPAQuery;
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import com.querydsl.jpa.impl.JPAQueryFactory;
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import de.bstly.board.controller.model.EntryFilter;
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import de.bstly.board.model.Bookmarks;
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import de.bstly.board.model.Entry;
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import de.bstly.board.model.QEntry;
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import de.bstly.board.model.QFlag;
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import de.bstly.board.model.QVote;
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import de.bstly.board.model.support.FlaggedStatus;
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import de.bstly.board.model.support.Types;
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import de.bstly.board.model.support.VoteType;
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import de.bstly.board.repository.EntryRepository;
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import de.bstly.board.repository.VoteRepository;
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import jakarta.persistence.EntityManager;
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import jakarta.persistence.Query;
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/**
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* The Class EntryManager.
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*/
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@Component
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public class EntryManager {
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@Autowired
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private EntryRepository entryRepository;
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@Autowired
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private TagManager tagManager;
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@Autowired
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private CommentManager commentManager;
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@Autowired
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private VoteManager voteManager;
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@Autowired
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private VoteRepository voteRepository;
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@Autowired
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private BookmarksManager bookmarksManager;
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@Autowired
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private SettingsManager settingsManager;
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@Autowired
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private FlagManager flagManager;
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@Autowired
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private JPAQueryFactory jpaQueryFactory;
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@Autowired
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private EntityManager em;
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private QEntry qEntry = QEntry.entry;
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private QVote qVote = QVote.vote;
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private QFlag qFlag = QFlag.flag;
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static final String UPVOTES_QUERY = "SELECT DISTINCT upvote.target,COUNT(upvote.id) AS count FROM votes as upvote WHERE upvote.type = 0 AND upvote.target_type = 1 GROUP BY upvote.target";
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static final String DOWNVOTES_QUERY = "SELECT DISTINCT downvote.target,COUNT(downvote.id) AS count FROM votes as downvote WHERE downvote.type = 1 AND downvote.target_type = 1 GROUP BY downvote.target";
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static final String COMMENTS_QUERY = "SELECT DISTINCT comment.target,MAX(comment.created) as last,COUNT(comment.id) AS count FROM comments as comment WHERE comment.flagged_status = :flag GROUP BY comment.target";
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static final String RANK_CALCULATION_QUERY = "SELECT DISTINCT entry.*, (IFNULL(upvote.count,0) - IFNULL(downvote.count,0)) as points, (IFNULL(upvote.count,0) - IFNULL(downvote.count,0)) / IF(:gravity > 0, POW(TIMESTAMPDIFF(HOUR, entry.created, :before)+2,:gravity), 1) AS ranking FROM entries AS entry LEFT JOIN ("
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+ UPVOTES_QUERY + ") AS upvote ON upvote.target = entry.id LEFT JOIN (" + DOWNVOTES_QUERY
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+ ") AS downvote ON downvote.target = entry.id %s";
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static final String DATE_QUERY = "SELECT DISTINCT entry.* FROM entries AS entry %s";
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static final String USER_QUERY = "SELECT DISTINCT entry.* FROM entries AS entry %s ORDER BY entry.created :order";
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static final String COMMENT_CALCULATION_QUERY = "SELECT DISTINCT entry.*, IFNULL(comment.count,0) as comments, IFNULL(comment.count,0) / IF(:gravity > 0, POW(TIMESTAMPDIFF(HOUR, comment.last, :before)+2,:gravity), 1) AS ranking FROM entries AS entry LEFT JOIN ("
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+ COMMENTS_QUERY + ") AS comment ON comment.target = entry.id %s";
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static final String LAST_COMMENT_QUERY = "SELECT DISTINCT entry.* FROM entries AS entry LEFT JOIN ("
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+ COMMENTS_QUERY + ") AS comment ON comment.target = entry.id %s ";
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static final String COUNT_QUERY = "SELECT count(entry.id) FROM entries as entry %s";
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/**
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* Fetch by ranking.
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*
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* @param username the username
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* @param filter the filter
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* @param gravity the gravity
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* @param page the page
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* @param size the size
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* @param asc the asc
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* @return the page
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*/
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public Page<Entry> fetchByRanking(String username, EntryFilter filter, float gravity, int page, int size,
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boolean asc) {
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Query query = createEntryQuery(RANK_CALCULATION_QUERY, username, filter,
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asc ? "ranking ASC, entry.created ASC" : "ranking DESC, entry.created DESC");
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query.setParameter("gravity", gravity);
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query.setFirstResult((page) * size);
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query.setMaxResults(size);
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@SuppressWarnings("unchecked")
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List<Entry> list = query.getResultList();
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Query queryTotal = createCountQuery(COUNT_QUERY, username, filter);
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long countResult = ((Long) queryTotal.getSingleResult()).longValue();
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return new PageImpl<Entry>(list, PageRequest.of(page, size), countResult);
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}
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/**
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* Fetch by date.
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*
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* @param username the username
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* @param filter the filter
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* @param page the page
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* @param size the size
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* @param asc the asc
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* @return the page
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*/
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public Page<Entry> fetchByDate(String username, EntryFilter filter, int page, int size, boolean asc) {
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Query query = createEntryQuery(DATE_QUERY, username, filter, asc ? "entry.created ASC" : "entry.created DESC");
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query.setFirstResult((page) * size);
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query.setMaxResults(size);
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@SuppressWarnings("unchecked")
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List<Entry> list = query.getResultList();
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Query queryTotal = createCountQuery(COUNT_QUERY, username, filter);
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long countResult = ((Long) queryTotal.getSingleResult()).longValue();
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return new PageImpl<Entry>(list, PageRequest.of(page, size), countResult);
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}
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/**
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* Fetch by comments.
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*
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* @param username the username
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* @param filter the filter
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* @param gravity the gravity
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* @param page the page
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* @param size the size
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* @param asc the asc
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* @return the page
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*/
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public Page<Entry> fetchByComments(String username, EntryFilter filter, float gravity, int page, int size,
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boolean asc) {
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Query query = createEntryQuery(COMMENT_CALCULATION_QUERY, username, filter,
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asc ? "ranking ASC, entry.created ASC" : "ranking DESC, entry.created DESC");
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query.setParameter("gravity", gravity);
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query.setFirstResult((page) * size);
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query.setMaxResults(size);
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@SuppressWarnings("unchecked")
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List<Entry> list = query.getResultList();
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Query queryTotal = createCountQuery(COUNT_QUERY, username, filter);
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long countResult = ((Long) queryTotal.getSingleResult()).longValue();
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return new PageImpl<Entry>(list, PageRequest.of(page, size), countResult);
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}
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/**
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* Fetch by last comment.
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*
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* @param username the username
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* @param filter the filter
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* @param page the page
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* @param size the size
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* @param asc the asc
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* @return the page
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*/
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public Page<Entry> fetchByLastComment(String username, EntryFilter filter, int page, int size, boolean asc) {
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Query query = createEntryQuery(LAST_COMMENT_QUERY, username, filter,
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asc ? "comment.last ASC, entry.created ASC" : "comment.last DESC, entry.created DESC");
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query.setFirstResult((page) * size);
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query.setMaxResults(size);
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@SuppressWarnings("unchecked")
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List<Entry> list = query.getResultList();
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Query queryTotal = createCountQuery(COUNT_QUERY, username, filter);
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long countResult = ((Long) queryTotal.getSingleResult()).longValue();
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return new PageImpl<Entry>(list, PageRequest.of(page, size), countResult);
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}
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/**
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* Fetch by user.
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*
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* @param fromUser the from user
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* @param username the username
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* @param filter the filter
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* @param page the page
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* @param size the size
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* @param asc the asc
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* @return the page
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*/
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public Page<Entry> fetchByUser(String fromUser, String username, EntryFilter filter, int page, int size,
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boolean asc) {
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filter.setAdditional("AND entry.author = :username");
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Query query = createEntryQuery(DATE_QUERY, username, filter, asc ? "entry.created ASC" : "entry.created DESC");
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query.setParameter("username", username);
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query.setFirstResult((page) * size);
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query.setMaxResults(size);
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@SuppressWarnings("unchecked")
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List<Entry> list = query.getResultList();
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Query queryTotal = createCountQuery(COUNT_QUERY, username, filter);
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queryTotal.setParameter("username", username);
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long countResult = ((Long) queryTotal.getSingleResult()).longValue();
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return new PageImpl<Entry>(list, PageRequest.of(page, size), countResult);
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}
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/**
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* Creates the entry query.
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*
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* @param rawQuery the raw query
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* @param username the username
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* @param filter the filter
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* @param orderBy the order by
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* @return the query
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*/
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protected Query createEntryQuery(String rawQuery, String username, EntryFilter filter, String orderBy) {
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String filterString = "";
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String tagsString = "";
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if (filter.getTags() != null && !filter.getTags().isEmpty()) {
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for (int index = 0; index < filter.getTags().size(); index++) {
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tagsString += "'" + filter.getTags().get(index) + "'";
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if (index < filter.getTags().size() - 1) {
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tagsString += ",";
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}
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}
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}
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if (StringUtils.hasText(tagsString)) {
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filterString += " INNER JOIN tags as tag ON entry.id = tag.target AND tag.tag IN (" + tagsString + ")";
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}
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String fixedTagsString = "";
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if (filter.getFixedTags() != null && !filter.getFixedTags().isEmpty()) {
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for (int index = 0; index < filter.getFixedTags().size(); index++) {
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fixedTagsString += "'" + filter.getFixedTags().get(index) + "'";
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if (index < filter.getFixedTags().size() - 1) {
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fixedTagsString += ",";
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}
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}
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}
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if (StringUtils.hasText(fixedTagsString)) {
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filterString += " INNER JOIN tags as fixedTag ON entry.id = fixedTag.target AND fixedTag.tag IN ("
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+ fixedTagsString + ")";
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}
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boolean author = false;
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if (filter.getDate() != null) {
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filterString += " WHERE entry.created < :before";
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} else {
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filter.setDate(Instant.now());
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author = true;
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filterString += " WHERE (entry.created < :before OR entry.author = :author)";
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}
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if (filter.getFlaggedStatus() == null) {
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filter.setFlaggedStatus(FlaggedStatus.NORMAL);
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}
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filterString += " AND entry.flagged_status = :flag";
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if (filter.getEntryType() != null) {
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filterString += " AND entry.entry_type = :type";
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}
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if (StringUtils.hasText(filter.getAdditional())) {
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filterString += " " + filter.getAdditional();
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}
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String excludedTagsString = "";
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if (filter.getExcludedTags() != null && !filter.getExcludedTags().isEmpty()) {
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for (int index = 0; index < filter.getExcludedTags().size(); index++) {
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excludedTagsString += "'" + filter.getExcludedTags().get(index) + "'";
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if (index < filter.getExcludedTags().size() - 1) {
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excludedTagsString += ",";
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}
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}
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}
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if (StringUtils.hasText(excludedTagsString)) {
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filterString += " AND NOT EXISTS (SELECT * FROM tags as excludedTag WHERE entry.id = excludedTag.target AND excludedTag.tag IN ("
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+ excludedTagsString + "))";
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}
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String fixedExcludedTagsString = "";
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if (filter.getFixedExcludedTags() != null && !filter.getFixedExcludedTags().isEmpty()) {
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for (int index = 0; index < filter.getFixedExcludedTags().size(); index++) {
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fixedExcludedTagsString += "'" + filter.getFixedExcludedTags().get(index) + "'";
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if (index < filter.getFixedExcludedTags().size() - 1) {
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fixedExcludedTagsString += ",";
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}
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}
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}
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if (StringUtils.hasText(fixedExcludedTagsString)) {
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filterString += " AND NOT EXISTS (SELECT * FROM tags as fixedExcludedTag WHERE entry.id = fixedExcludedTag.target AND fixedExcludedTag.tag IN ("
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+ fixedExcludedTagsString + "))";
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}
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if (StringUtils.hasText(orderBy)) {
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filterString += " ORDER BY " + orderBy;
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}
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Query query = em.createNativeQuery(String.format(rawQuery, filterString), Entry.class);
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query.setParameter("before", filter.getDate());
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if (author) {
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query.setParameter("author", username);
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}
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if (filter.getEntryType() != null) {
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query.setParameter("type", filter.getEntryType().toString());
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}
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query.setParameter("flag", filter.getFlaggedStatus().toString());
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return query;
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}
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/**
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* Creates the count query.
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*
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* @param rawQuery the raw query
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* @param username the username
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* @param filter the filter
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* @return the query
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*/
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protected Query createCountQuery(String rawQuery, String username, EntryFilter filter) {
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String filterString = "";
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String tagsString = "";
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if (filter.getTags() != null && !filter.getTags().isEmpty()) {
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for (int index = 0; index < filter.getTags().size(); index++) {
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tagsString += "'" + filter.getTags().get(index) + "'";
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if (index < filter.getTags().size() - 1) {
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tagsString += ",";
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}
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}
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}
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if (StringUtils.hasText(tagsString)) {
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filterString += " INNER JOIN tags as tag ON entry.id = tag.target AND tag.tag IN (" + tagsString + ")";
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}
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boolean author = false;
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if (filter.getDate() != null) {
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filterString += " WHERE entry.created < :before";
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} else {
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filter.setDate(Instant.now());
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author = true;
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filterString += " WHERE (entry.created < :before OR entry.author = :author)";
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}
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if (filter.getFlaggedStatus() == null) {
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filter.setFlaggedStatus(FlaggedStatus.NORMAL);
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}
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filterString += " AND entry.flagged_status = :flag";
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if (filter.getEntryType() != null) {
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filterString += " AND entry.entry_type = :type";
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}
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if (StringUtils.hasText(filter.getAdditional())) {
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filterString += " " + filter.getAdditional();
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}
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String excludedTagsString = "";
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if (filter.getExcludedTags() != null && !filter.getExcludedTags().isEmpty()) {
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for (int index = 0; index < filter.getExcludedTags().size(); index++) {
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excludedTagsString += "'" + filter.getExcludedTags().get(index) + "'";
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if (index < filter.getExcludedTags().size() - 1) {
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excludedTagsString += ",";
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}
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}
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}
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if (StringUtils.hasText(excludedTagsString)) {
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filterString += " AND NOT EXISTS (SELECT * FROM tags as excludedTag WHERE entry.id = excludedTag.target AND excludedTag.tag IN ("
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+ excludedTagsString + "))";
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}
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Query query = em.createNativeQuery(String.format(rawQuery, filterString));
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query.setParameter("before", filter.getDate());
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if (author) {
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query.setParameter("author", username);
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}
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if (filter.getEntryType() != null) {
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query.setParameter("type", filter.getEntryType().toString());
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}
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query.setParameter("flag", filter.getFlaggedStatus().toString());
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return query;
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}
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/**
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* Fetch flagged.
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*
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* @param page the page
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* @param size the size
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* @param asc the asc
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* @return the page
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*/
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public Page<Entry> fetchFlagged(int page, int size, boolean asc) {
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Sort sort = Sort.by(asc ? Order.asc("created") : Order.desc("created"));
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JPAQuery<Entry> query = jpaQueryFactory.selectFrom(qEntry).innerJoin(qFlag).on(qEntry.id.eq(qFlag.target))
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.where(qFlag.targetType.eq(Types.entry)).groupBy(qFlag.target).distinct();
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JPAQuery<Long> countQuery = query.clone().select(qEntry.countDistinct());
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Long count = countQuery.fetchOne();
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if (count == null) {
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count = 0L;
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}
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return new PageImpl<Entry>(query
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.orderBy(new OrderSpecifier<>(
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asc ? com.querydsl.core.types.Order.ASC : com.querydsl.core.types.Order.DESC, qEntry.created))
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.limit(size).offset(page * size).fetch(), PageRequest.of(page, size, sort), count);
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}
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/**
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* Fetch by bookmarks.
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*
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* @param username the username
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* @param page the page
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* @param size the size
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* @return the page
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*/
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public Page<Entry> fetchByBookmarks(String username, int page, int size) {
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Bookmarks bookmarks = bookmarksManager.get(username);
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if (bookmarks.getEntries() == null) {
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bookmarks.setEntries(Lists.newArrayList());
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}
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return entryRepository.findAll(qEntry.id.in(bookmarks.getEntries()),
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PageRequest.of(page, size, Sort.by(Order.desc("created"))));
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}
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/**
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* Apply metadata.
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*
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* @param username the username
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* @param karma the karma
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* @param entry the entry
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* @param ignore the ignore
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*/
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public void applyMetadata(String username, long karma, Entry entry, List<String> ignore) {
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entry.setTags(tagManager.getForTarget(entry.getId()));
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ignore.addAll(entry.getMetadata().keySet());
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if (!ignore.contains("author")) {
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entry.getMetadata().put("author", entry.getAuthor().equals(username));
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}
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if (!ignore.contains("edit")) {
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entry.getMetadata().put("edit",
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entry.getAuthor().equals(username) && entry.getCreated().isAfter(Instant.now()));
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}
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if (!ignore.contains("comments")) {
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entry.getMetadata().put("comments", commentManager.count(entry.getId()));
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}
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if (!ignore.contains("points")) {
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entry.getMetadata().put("points", voteManager.getPoints(entry.getId(), Types.entry));
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}
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if (!ignore.contains("bookmark")) {
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entry.getMetadata().put("bookmark", !bookmarksManager.hasEntry(username, entry.getId()));
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}
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if (!ignore.contains("removeBookmark")) {
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entry.getMetadata().put("removeBookmark", bookmarksManager.hasEntry(username, entry.getId()));
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}
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if (!ignore.contains("upvoted")) {
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entry.getMetadata().put("upvoted",
|
|
voteRepository.exists(qVote.target.eq(entry.getId()).and(qVote.targetType.eq(Types.entry))
|
|
.and(qVote.type.eq(VoteType.up)).and(qVote.author.equalsIgnoreCase(username))));
|
|
}
|
|
|
|
if (!ignore.contains("downvoted")) {
|
|
entry.getMetadata().put("downvoted",
|
|
voteRepository.exists(qVote.target.eq(entry.getId()).and(qVote.targetType.eq(Types.entry))
|
|
.and(qVote.type.eq(VoteType.down)).and(qVote.author.equalsIgnoreCase(username))));
|
|
}
|
|
|
|
if (!username.equals(entry.getAuthor()) && !ignore.contains("flag")) {
|
|
entry.getMetadata().put("flag", flagManager.get(username, entry.getId(), Types.entry) == null);
|
|
}
|
|
|
|
if (!username.equals(entry.getAuthor()) && !ignore.contains("unflag")) {
|
|
entry.getMetadata().put("unflag", flagManager.get(username, entry.getId(), Types.entry) != null);
|
|
}
|
|
|
|
if (!ignore.contains("flagged")) {
|
|
entry.getMetadata().put("flagged", flagManager.getFlags(entry.getId(), Types.entry) > 0);
|
|
}
|
|
|
|
if (voteRepository.exists(qVote.target.eq(entry.getId()).and(qVote.targetType.eq(Types.entry))
|
|
.and(qVote.author.equalsIgnoreCase(username)))) {
|
|
if (!ignore.contains("unvote")) {
|
|
entry.getMetadata().put("unvote", true);
|
|
}
|
|
} else {
|
|
if (!ignore.contains("vote")) {
|
|
entry.getMetadata().put("vote", true);
|
|
}
|
|
|
|
if (!ignore.contains("downvote") && karma >= settingsManager.getUnvoteThresh()) {
|
|
entry.getMetadata().put("downvote", true);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Apply metadata.
|
|
*
|
|
* @param username the username
|
|
* @param karma the karma
|
|
* @param entries the entries
|
|
* @param ignore the ignore
|
|
*/
|
|
public void applyMetadata(String username, long karma, List<Entry> entries, List<String> ignore) {
|
|
for (Entry entry : entries) {
|
|
applyMetadata(username, karma, entry, ignore);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Exists.
|
|
*
|
|
* @param id the id
|
|
* @return true, if successful
|
|
*/
|
|
public boolean exists(Long id) {
|
|
return entryRepository.existsById(id);
|
|
}
|
|
|
|
/**
|
|
* Gets the.
|
|
*
|
|
* @param id the id
|
|
* @return the entry
|
|
*/
|
|
public Entry get(Long id) {
|
|
return entryRepository.findById(id).orElse(null);
|
|
}
|
|
|
|
/**
|
|
* Save.
|
|
*
|
|
* @param entry the entry
|
|
* @return the entry
|
|
*/
|
|
public Entry save(Entry entry) {
|
|
List<String> tags = Lists.newArrayList();
|
|
if (entry.getTags() != null) {
|
|
tags = Lists.newArrayList(entry.getTags());
|
|
|
|
if (tags.size() > settingsManager.getMaxTags()) {
|
|
tags = tags.subList(0, settingsManager.getMaxTags() - 1);
|
|
}
|
|
}
|
|
|
|
entry = entryRepository.save(entry);
|
|
tagManager.setForTarget(entry.getId(), tags);
|
|
return entry;
|
|
}
|
|
|
|
/**
|
|
* Delete.
|
|
*
|
|
* @param entry the entry
|
|
*/
|
|
public void delete(Entry entry) {
|
|
tagManager.deleteByTarget(entry.getId());
|
|
commentManager.deleteByTarget(entry.getId());
|
|
voteManager.deleteByTarget(entry.getId(), Types.entry);
|
|
bookmarksManager.removeEntry(entry.getId());
|
|
flagManager.deleteByTarget(entry.getId(), Types.entry);
|
|
entryRepository.delete(entry);
|
|
}
|
|
|
|
/**
|
|
* Gets the points.
|
|
*
|
|
* @param entryId the entry id
|
|
* @return the points
|
|
*/
|
|
public long getPoints(Long entryId) {
|
|
long upvotes = voteRepository
|
|
.count(qVote.targetType.eq(Types.entry).and(qVote.type.eq(VoteType.up)).and(qVote.target.eq(entryId)));
|
|
long downvotes = voteRepository.count(
|
|
qVote.targetType.eq(Types.entry).and(qVote.type.eq(VoteType.down)).and(qVote.target.eq(entryId)));
|
|
return upvotes - downvotes;
|
|
}
|
|
|
|
/**
|
|
* Gets the user points.
|
|
*
|
|
* @param entryId the entry id
|
|
* @param username the username
|
|
* @return the user points
|
|
*/
|
|
public long getUserPoints(Long entryId, String username) {
|
|
long upvotes = voteRepository.count(qVote.targetType.eq(Types.entry)
|
|
.and(qVote.type.eq(VoteType.up).and(qVote.author.notEqualsIgnoreCase(username)))
|
|
.and(qVote.target.eq(entryId)));
|
|
long downvotes = voteRepository.count(qVote.targetType.eq(Types.entry)
|
|
.and(qVote.type.eq(VoteType.down).and(qVote.author.notEqualsIgnoreCase(username)))
|
|
.and(qVote.target.eq(entryId)));
|
|
return upvotes - downvotes;
|
|
}
|
|
|
|
}
|