看看下面这些代码部分,是最近在学习别人的代码中的一部分,在这个项目中,没有一个*.hbm.xml配置文件,PO中的写法如下面的代码,只有在hibernate.cfg.xml文件中有类似配置映射的配置;
<mapping class="hz.aaa.bo.DicFlow"/>请教下,此类映射是如何实现的,是手动写的还是用什么工具自动生成?不会是用XDoclet这个东东吧?myeclipse能生成这种形式的映射配置么?这样的配置,如何与数据库实现映射,能否简单阐述下原理package hz.aaa.bo;
@SuppressWarnings("serial")
@Entity
@Table(name="DIC_FLOW")
@Cache(usage=CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
public class DicFlow extends BaseModel{
// Fields private String flowId;
private String flowName; // Property accessors @Id
@Column(name = "FLOW_ID", unique = true, nullable = false, length = 32)
@GeneratedValue(generator = "system-uuid")
@GenericGenerator(name = "system-uuid", strategy = "uuid")
public String getFlowId() {
return this.flowId;
}
public void setFlowId(String flowId) {
this.flowId = flowId;
} @Column(name = "FLOW_NAME")
public String getFlowName() {
return this.flowName;
}
public void setFlowName(String flowName) {
this.flowName = flowName;
}
}
<mapping class="hz.aaa.bo.DicFlow"/>请教下,此类映射是如何实现的,是手动写的还是用什么工具自动生成?不会是用XDoclet这个东东吧?myeclipse能生成这种形式的映射配置么?这样的配置,如何与数据库实现映射,能否简单阐述下原理package hz.aaa.bo;
@SuppressWarnings("serial")
@Entity
@Table(name="DIC_FLOW")
@Cache(usage=CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
public class DicFlow extends BaseModel{
// Fields private String flowId;
private String flowName; // Property accessors @Id
@Column(name = "FLOW_ID", unique = true, nullable = false, length = 32)
@GeneratedValue(generator = "system-uuid")
@GenericGenerator(name = "system-uuid", strategy = "uuid")
public String getFlowId() {
return this.flowId;
}
public void setFlowId(String flowId) {
this.flowId = flowId;
} @Column(name = "FLOW_NAME")
public String getFlowName() {
return this.flowName;
}
public void setFlowName(String flowName) {
this.flowName = flowName;
}
}
加载的
因为你配置这些个@SuppressWarnings("serial")
@Entity
@Table(name="DIC_FLOW")
@Cache(usage=CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
符号代码(因为这些符号,有一个jar文件会识别,会加载)呵呵!