I really like Project Lombok, with use of this library you can code cleaner, just look at the sample of @Data (here) and you give me the right!
But after using @Data on an entity, and use it into another entity (eg a Set of comments of a post), throw an ugly error: java.lang.StackOverflowError: null. @Data is a shortcut for these annotations of Lombok:
But after using @Data on an entity, and use it into another entity (eg a Set of comments of a post), throw an ugly error: java.lang.StackOverflowError: null. @Data is a shortcut for these annotations of Lombok:
- @Getter
- @Setter
- @ToString
- @RequiredArgsConstructor
- @EqualsAndHashCode
@EqualsAndHashCode(exclude="entries")
I used it on my project, Feader, and you can use it as a sample to check it out ( on develop branch); These are my use case classes Feed.java, and FeedEntry.java, FeedEntry use into Feed (like comments and post):package com.glinboy.feader.model;
import java.util.Set;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.Lob;
import javax.persistence.ManyToMany;
import javax.persistence.OneToMany;
import org.hibernate.annotations.Cache;
import org.hibernate.annotations.CacheConcurrencyStrategy;
import lombok.Data;
import lombok.EqualsAndHashCode;
@Entity
@Data
@EqualsAndHashCode(callSuper=true, exclude="entries")
@Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
public class Feed extends BaseModel {
private static final long serialVersionUID = 7720285113632455831L;
@Column(length=50)
private String title;
@Column(length=256)
private String link;
@Lob
private String description;
@ManyToMany
@JoinTable(name="feed_category",
joinColumns = @JoinColumn(name = "feed_id", nullable=false),
inverseJoinColumns = @JoinColumn(name = "category_id", nullable=false))
private Set category;
@OneToMany(mappedBy="feed")
private Set entries;
}
package com.glinboy.feader.model;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.JoinColumn;
import javax.persistence.Lob;
import javax.persistence.ManyToOne;
import lombok.Data;
import lombok.EqualsAndHashCode;
@Entity
@Data
@EqualsAndHashCode(callSuper=true, exclude="feed")
public class FeedEntry extends BaseModel {
private static final long serialVersionUID = -7086809764656937022L;
@Column(length=128)
private String title;
@Lob
private String description;
@Column(length=512)
private String link;
@Column(length=64)
private String author;
@Column(length=40)
private String guid;
@ManyToOne
@JoinColumn(name="feed_id", nullable=false)
private Feed feed;
}
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