One-to-Many(单向)

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package com.hibernate.ano;import java.util.Date;import java.util.Set;import javax.persistence.CascadeType;import javax.persistence.Column;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.Id;import javax.persistence.JoinColumn;import javax.persistence.OneToMany;import javax.persistence.OrderBy;import javax.persistence.Table;import javax.persistence.Temporal;import javax.persistence.TemporalType;import org.hibernate.annotations.GenericGenerator;/** * @ClassName: ReportForm.java * * @Description: 报表 * * @author GERRARD * * @date 2015年1月26日下午1:56:25 *  */@Entity@Table(name = "report_form")public class ReportForm implements java.io.Serializable {/** *  */private static final long serialVersionUID = 3967334816987304916L;/** * 主键ID */private String pid;/** * 报表日期 */private Date reportDate;/** * 报表人 */private String reporter;/** * 报表明细 */private Set<ReportDetails> details;public ReportForm() {}public ReportForm(String pid, Date reportDate, String reporter,Set<ReportDetails> details) {this.pid = pid;this.reportDate = reportDate;this.reporter = reporter;this.details = details;}@Id    @Column(name = "pid", unique = true, nullable = false, length = 32)    @GeneratedValue(generator = "generator")    @GenericGenerator(name = "generator", strategy = "uuid")public String getPid() {return pid;}public void setPid(String pid) {this.pid = pid;}@Temporal(TemporalType.TIMESTAMP)@Column(name = "report_date", length = 19)public Date getReportDate() {return reportDate;}public void setReportDate(Date reportDate) {this.reportDate = reportDate;}@Column(name = "reporter", length = 25)public String getReporter() {return reporter;}public void setReporter(String reporter) {this.reporter = reporter;}/** * OneToMany(cascade=CascadeType.ALL)  一对多级联操作 *  * JoinColumn(name="reportId") 关联明细表reportId字段 *  * OrderBy(value = "createDate desc") 关联多条数据按 createDate desc 排序 */@OneToMany(cascade=CascadeType.ALL)      @JoinColumn(name="reportId") @OrderBy(value = "createDate desc")public Set<ReportDetails> getDetails() {return details;}public void setDetails(Set<ReportDetails> details) {this.details = details;}}

package com.hibernate.ano;import java.util.Date;import javax.persistence.Column;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.Id;import javax.persistence.Table;import javax.persistence.Temporal;import javax.persistence.TemporalType;import org.hibernate.annotations.GenericGenerator;/** * @ClassName: ReportDetails.java * * @Description: 报表明细 * * @author GERRARD * * @date 2015年1月26日下午2:08:16 *  */@Entity@Table(name = "Report_details")public class ReportDetails implements java.io.Serializable {/** *  */private static final long serialVersionUID = -2120324671262740894L;/** * 主键ID */private String pid;/** * 创建日期 */private Date createDate;/** * 数据内容 */private String dataContent;/** * 报表ID */private String reportId;public ReportDetails() {}public ReportDetails(String pid, Date createDate, String dataContent,String reportId) {this.pid = pid;this.createDate = createDate;this.dataContent = dataContent;this.reportId = reportId;}@Id    @Column(name = "pid", unique = true, nullable = false, length = 32)    @GeneratedValue(generator = "generator")    @GenericGenerator(name = "generator", strategy = "uuid")public String getPid() {return pid;}public void setPid(String pid) {this.pid = pid;}@Temporal(TemporalType.TIMESTAMP)@Column(name = "create_date", length = 19)public Date getCreateDate() {return createDate;}public void setCreateDate(Date createDate) {this.createDate = createDate;}@Column(name = "data_content", length = 255)public String getDataContent() {return dataContent;}public void setDataContent(String dataContent) {this.dataContent = dataContent;}@Column(name = "reportId", length = 32)public String getReportId() {return reportId;}public void setReportId(String reportId) {this.reportId = reportId;}}

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