Book.java

package kr.pe.kwonnam.hibernate4memcached.example.entity;

import org.hibernate.annotations.Cache;
import org.hibernate.annotations.CacheConcurrencyStrategy;

import javax.persistence.*;
import java.io.Serializable;
import java.util.Collection;
import java.util.Date;

/**
 *
 */
@Entity
@Table(name = "books")
@NamedQuery(name = "Book.byEdition",
        query = "from Book where edition=:edition",
        hints = {
                @QueryHint(name = "org.hibernate.cacheable", value = "true"),
                @QueryHint(name = "org.hibernate.cacheRegion", value = "book-by-named-edition")
        }
)
@org.hibernate.annotations.Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE, region = "books")
public class Book implements Serializable {


    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "book_id")
    private long id;

    @Column(name = "title", length = 128, nullable = false)
    private String title;

    @Column(name = "description", length = 1024, nullable = false)
    private String description;
//
//    @Column(name="test", nullable = true)
//    private String test = "hello";

    @Column(name = "edition", nullable = false)
    private int edition = 1;

    @Lob
    @Column(name="contents", nullable = true, length = 60000)
    private String contents;

    @ManyToMany
    @JoinTable(name = "book_authors", joinColumns = @JoinColumn(name = "book_id", referencedColumnName = "book_id"),
            inverseJoinColumns = @JoinColumn(name = "author_id", referencedColumnName = "author_id"))
    @Cache(region = "books_authors", usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
    public Collection<Author> authors;

    @Temporal(TemporalType.TIMESTAMP)
    @Column(name = "published_at", nullable = false)
    private Date publishedAt;

    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 getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public int getEdition() {
        return edition;
    }

    public void setEdition(int edition) {
        this.edition = edition;
    }

    public String getContents() {
        return contents;
    }

    public void setContents(String contents) {
        this.contents = contents;
    }

    public Collection<Author> getAuthors() {
        return authors;
    }

    public void setAuthors(Collection<Author> authors) {
        this.authors = authors;
    }

    public Date getPublishedAt() {
        return publishedAt;
    }

    public void setPublishedAt(Date publishedAt) {
        this.publishedAt = publishedAt;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        Book book = (Book) o;

        if (id != book.id) return false;

        return true;
    }

    @Override
    public int hashCode() {
        return (int) (id ^ (id >>> 32));
    }

    @Override
    public String toString() {
        return "Book{" +
                "id=" + id +
                ", title='" + title + '\'' +
                ", description='" + description + '\'' +
                ", edition=" + edition +
                ", authors=" + authors +
                ", publishedAt=" + publishedAt +
                '}';
    }
}