Hibernate3.x 中BLOB、CLOB 注解配置写法

在hibernate Annotation中,实体BLOB、CLOB类型的注解与普通的实体属性有些不同,具体操作如下:

import javax.persistence.Basic;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Id;
import javax.persistence.Lob;
import javax.persistence.Table;

@Entity
@Table(name = "T_USER", schema = "TRS_CMS")
public class TUser implements java.io.Serializable {

    // Fields

    private Long id;
    private String name;
    
    //CLOB类型,类型声明为String
    private String introduction;
    //BLOB类型,类型声明为byte[]:
    private byte[] icon;

    // Constructors

    /** default constructor */
    public TUser() {
    }

    // Property accessors
    @Id
    @Column(name = "ID", unique = true, nullable = false, precision = 22, scale = 0)
    public Long getId() {
        return this.id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    @Column(name = "NAME", length = 40)
    public String getName() {
        return this.name;
    }

    public void setName(String name) {
        this.name = name;
    }
    
    
    //--============== 华丽的分割线================================
    @Lob  
    @Basic(fetch = FetchType.EAGER)
    @Column(name = "INTRODUCTION", columnDefinition = "CLOB",nullable=true)
    public String getIntroduction() {
        return this.introduction;
    }

    public void setIntroduction(String introduction) {
        this.introduction = introduction;
    }
    
    //--============== 华丽的分割线================================
    @Lob  
    @Basic(fetch = FetchType.LAZY)
    @Column(name = "ICON", columnDefinition = "BLOB",nullable=true)
    public byte[] getIcon() {
        return this.icon;
    }

    public void setIcon(byte[] icon) {
        this.icon = icon;
    }

}

 

 

posted on 2013-04-08 11:18  阿明007  阅读(457)  评论(0编辑  收藏  举报

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