Netbeansは次のことを提供します。宣言のために「コレクションを使用した不均衡な読み取り/書き込み」を構成しますheaderFields
。
package net.bounceme.dur.usenet.model;
import java.io.Serializable;
import java.util.AbstractMap.SimpleEntry;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.mail.Header;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.persistence.*;
@Entity
public class Article implements Serializable {
private static final long serialVersionUID = 1L;
private static final Logger LOG = Logger.getLogger(Article.class.getName());
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@Column
private String subject;
@OneToMany(mappedBy = "article")
private List<HeaderField> headerFields = new ArrayList<>();
public Article() {
}
public Article(Message message) {
try {
subject = message.getSubject();
Enumeration e = message.getAllHeaders();
while (e.hasMoreElements()) {
Header header = (Header) e.nextElement();
@SuppressWarnings("unchecked")
SimpleEntry nameValue = new SimpleEntry(header.getName(), header.getValue());
HeaderField headerField = new HeaderField(nameValue);
headerFields.add(headerField);
}
} catch (MessagingException ex) {
Logger.getLogger(Article.class.getName()).log(Level.SEVERE, null, ex);
}
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
@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 Article)) {
return false;
}
Article other = (Article) 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 subject;
}
public String getSubject() {
return subject;
}
public void setSubject(String subject) {
this.subject = subject;
}
}
これにより、HeaderFieldとの関係がから適切に確立されているかどうかArticle
、またはこの警告が何を示しているのか疑問に思います。