在ssm中表的字段是本表的外键,这该如何进行关联修改
因为在作一个小项目用的ssm,数据库用的mybatis,需要有子部门,在部门表中把部门表的一个字段作为本表的外键,需要对部门进行关联修改,但因为有外建修改或删除会有问题,如何解决
import java.util.Set;
public class Department {
@Override
public String toString() {
return "Department [d_id=" + d_id + ", d_name=" + d_name + ", d_description=" + d_description + ", u_parent="
+ u_parent + ", sDepartments=" + sDepartments + "]";
}
private int d_id;
private String d_name;
private String d_description;
private Department u_parent;
public Department getU_parent() {
return u_parent;
}
public void setU_parent(Department u_parent) {
this.u_parent = u_parent;
}
private Set sDepartments;
public int getD_id() {
return d_id;
}
public void setD_id(int d_id) {
this.d_id = d_id;
}
public String getD_name() {
return d_name;
}
public void setD_name(String d_name) {
this.d_name = d_name;
}
public String getD_description() {
return d_description;
}
public void setD_description(String d_description) {
this.d_description = d_description;
}
public Set getsDepartments() {
return sDepartments;
}
public void setsDepartments(Set sDepartments) {
this.sDepartments = sDepartments;
}
} |
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