Post.java

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package com.hantsylabs.example.ee7.jpa;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Convert;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.PrePersist;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.Converts;
import javax.persistence.EntityListeners;
import javax.persistence.FetchType;
import javax.persistence.NamedAttributeNode;
import javax.persistence.NamedEntityGraph;
import javax.persistence.NamedSubgraph;
import javax.persistence.OneToMany;

/**
 *
 * @author hantsy
 */
@Entity
@Table(name = "POSTS")
@Converts(value = {
    @Convert(attributeName = "tags", converter = ListToStringConveter.class)
})
@EntityListeners(PostListener.class)
@NamedEntityGraph(
        name = "post",
        attributeNodes = {
            @NamedAttributeNode("title"),
            @NamedAttributeNode(value = "comments", subgraph = "comments")
        },
        subgraphs = {
            @NamedSubgraph(
                    name = "comments",
                    attributeNodes = {
                        @NamedAttributeNode("content")}
            )
        }
)
public class Post implements Serializable {

    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "ID")
    private Long id;

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

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

    @Temporal(javax.persistence.TemporalType.DATE)
    @Column(name = "CREATED_DATE")
    private Date created;

    @Temporal(javax.persistence.TemporalType.DATE)
    @Column(name = "LAST_MODIFIED_DATE")
    private Date lastModified;

    @Column(name = "TAGS")
    // @Convert(converter = ListToStringConveter.class)
    private List<String> tags = new ArrayList<>();

    private boolean approved = false;

    @OneToMany(cascade = CascadeType.ALL, mappedBy = "post", orphanRemoval = true, fetch = FetchType.LAZY)
    private List<Comment> comments = new ArrayList<>();

    @PrePersist
    public void prePresist() {
        this.created = new Date();
    }

    public Long getId() {
        return id;
    }

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

    public String getTitle() {
        return title;
    }

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

    public String getBody() {
        return body;
    }

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

    public Date getCreated() {
        return created;
    }

    public void setCreated(Date created) {
        this.created = created;
    }

    public List<String> getTags() {
        return tags;
    }

    public void setTags(List<String> tags) {
        this.tags = tags;
    }

    public Date getLastModified() {
        return lastModified;
    }

    public void setLastModified(Date lastModified) {
        this.lastModified = lastModified;
    }

    public boolean isApproved() {
        return approved;
    }

    public void setApproved(boolean approved) {
        this.approved = approved;
    }

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

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

    @Override
    public int hashCode() {
        int hash = 0;
        hash += (id != null ? id.hashCode() : 0);
        return hash;
    }

    @Override
    public boolean equals(Object object) {
        // TODO: Warning - this method won't work in the case the id fields are not set
        if (!(object instanceof Post)) {
            return false;
        }
        Post other = (Post) object;
        if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id))) {
            return false;
        }
        return true;
    }

    @Override
    public String toString() {
        return "com.hantsylabs.example.ee7.jpa.Post[ id=" + id + " ]";
    }

}