Hibernate 一对多关联

示例如下：

@ManyToOne@JoinColumn(name="docId",nullable =false,updatable=false,insertable = false)private TbDoc tbDoc;@OneToMany(mappedBy="tbDoc")private Set<TbDocVersion> tbDocVersions = new HashSet<TbDocVersion>();

?注意：设置双向关联、在一的那方加mappedBy

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?cascade：负责增删改时的级联操作(ALL、delete...)?

?fetch：负责读取时的级联操作 (Lazy、Eager)

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