mongpdb中document的复合主键申明方式

package yaycrawler.dao.domain;

import javax.persistence.*;
import java.sql.Blob;

@Entity
@IdClass(QrtzJobDetailsIds.class)
@Table(name = "qrtz_job_details")
public class QrtzJobDetails implements java.io.Serializable {
    
    /*
        现在复合主键（sched_name job_name job_group都需要加上@Id并且需要单独创建类，然后再当前类加上@IdClass(QrtzJobDetailsIds.class) 【QrtzJobDetailsIds自行定义】 ）
    */

    /** 版本号 */
    private static final long serialVersionUID = 840552323049001278L;
    
    /** schedName */
    @Id
    @Column(name = "sched_name", unique = true, nullable = false, length = 120)
    private String schedName;

    /** jobName */
    @Id
    @Column(name = "job_name", unique = true, nullable = false, length = 200)
    private String jobName;

    /** jobGroup */
    @Id
    @Column(name = "job_group", unique = true, nullable = false, length = 200)
    private String jobGroup;

    /** description */
    @Column(name = "description", nullable = true, length = 250)
    private String description;
}

public class QrtzJobDetailsIds implements Serializable{

    private static final long serialVersionUID = 7431247025727743159L;

    public String schedName;
    public String jobName;
    public String jobGroup;

    public QrtzJobDetailsIds() {
    }

    public QrtzJobDetailsIds(String schedName, String jobName, String jobGroup) {
        this.schedName = schedName;
        this.jobName = jobName;
        this.jobGroup = jobGroup;
    }
  ..................      
}