io.spring.springoverflow.domain.Post.java Source code

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Here is the source code for io.spring.springoverflow.domain.Post.java

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/*
 * Copyright 2014 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.spring.springoverflow.domain;

import org.springframework.beans.support.PropertyComparator;
import org.springframework.util.CollectionUtils;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
import javax.persistence.OrderBy;
import javax.persistence.PostLoad;
import javax.persistence.Transient;
import javax.persistence.Version;
import java.util.Date;
import java.util.HashSet;
import java.util.Set;
import java.util.TreeSet;

/**
 * @author Michael Minella
 */
@Entity
public class Post {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @Version
    private long version;

    @Column(name = "POST_TYPE")
    private Integer postTypeId;

    @Column(name = "CREATION_DATE")
    private Date creationDate;

    @Column(name = "ACCEPTED_ANSWER_ID")
    private Long acceptedAnswerId;

    @Column(name = "SCORE")
    private Integer score;

    @Column(name = "VIEW_COUNT")
    private int viewCount;

    @Column(name = "BODY")
    private String body;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "OWNER_USER_ID")
    private User ownerUser;

    @Column(name = "TITLE")
    private String title;

    @Column(name = "ANSWER_COUNT")
    private int answerCount;

    @Column(name = "COMMENT_COUNT")
    private int commentCount;

    @Column(name = "FAVORITE_COUNT")
    private int favoriteCount;

    @OneToMany(cascade = CascadeType.ALL)
    @JoinColumn(name = "PARENT_ID")
    @OrderBy("creationDate DESC")
    private Set<Post> answers;

    @OneToMany(mappedBy = "post")
    @OrderBy("creationDate ASC")
    private Set<Comment> comments = new TreeSet<>(new PropertyComparator<>("creationDate", true, true));

    @OneToMany
    @JoinTable(name = "POST_TAG", joinColumns = @JoinColumn(name = "POST_ID"), inverseJoinColumns = @JoinColumn(name = "TAG_ID"))
    private Set<Tag> tags = new HashSet<>();

    @OneToMany(mappedBy = "post")
    private Set<Vote> votes;

    @Transient
    private int voteCount = 0;

    @PostLoad
    public void calculateVotes() {
        if (!CollectionUtils.isEmpty(votes)) {
            for (Vote vote : votes) {
                if (vote.getVoteType() == 2) {
                    voteCount++;
                } else if (vote.getVoteType() == 3) {
                    voteCount--;
                }
            }
        }
    }

    public Set<Vote> getVotes() {
        return votes;
    }

    public void setVotes(Set<Vote> votes) {
        this.votes = votes;
    }

    public int getVoteCount() {
        return voteCount;
    }

    public void setVoteCount(int voteCount) {
        this.voteCount = voteCount;
    }

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public Integer getPostTypeId() {
        return postTypeId;
    }

    public void setPostTypeId(Integer postTypeId) {
        this.postTypeId = postTypeId;
    }

    public Long getAcceptedAnswerId() {
        return acceptedAnswerId;
    }

    public void setAcceptedAnswerId(Long acceptedAnswerId) {
        this.acceptedAnswerId = acceptedAnswerId;
    }

    public Date getCreationDate() {
        return creationDate;
    }

    public void setCreationDate(Date creationDate) {
        this.creationDate = creationDate;
    }

    public Integer getScore() {
        return score;
    }

    public void setScore(Integer score) {
        this.score = score;
    }

    public int getViewCount() {
        return viewCount;
    }

    public void setViewCount(int viewCount) {
        this.viewCount = viewCount;
    }

    public String getBody() {
        return body;
    }

    public void setBody(String body) {
        this.body = body;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public int getAnswerCount() {
        return answerCount;
    }

    public void setAnswerCount(int answerCount) {
        this.answerCount = answerCount;
    }

    public int getCommentCount() {
        return commentCount;
    }

    public void setCommentCount(int commentCount) {
        this.commentCount = commentCount;
    }

    public int getFavoriteCount() {
        return favoriteCount;
    }

    public void setFavoriteCount(int favoriteCount) {
        this.favoriteCount = favoriteCount;
    }

    public long getVersion() {
        return version;
    }

    public void setVersion(long version) {
        this.version = version;
    }

    public User getOwnerUser() {
        return ownerUser;
    }

    public void setOwnerUser(User ownerUser) {
        this.ownerUser = ownerUser;
    }

    public Set<Post> getAnswers() {
        return answers;
    }

    public void setAnswers(Set<Post> answers) {
        this.answers = answers;
    }

    public Set<Comment> getComments() {
        return comments;
    }

    public void setComments(Set<Comment> comments) {
        this.comments = comments;
    }

    public Set<Tag> getTags() {
        return tags;
    }

    public void setTags(Set<Tag> tags) {
        this.tags = tags;
    }

    @Override
    public String toString() {
        return "Id = " + id;
    }

    @Override
    public boolean equals(Object other) {
        if (this == other)
            return true;
        if (!(other instanceof Post))
            return false;

        final Post post = (Post) other;

        if (!post.getId().equals(getId()))
            return false;

        return true;
    }

    @Override
    public int hashCode() {
        int result;

        if (getId() != null) {
            result = 29 * getId().hashCode();
        } else {
            result = super.hashCode();
        }

        return result;
    }

}