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时间：2008-05-04 关键字: 谁帮我看看为什么报这个错
package hbue.biz;
import hbue.SessionFactory.MyFactory;
import hbue.pojo.Classes;
import hbue.pojo.ClassesClassroom;
import hbue.pojo.Classroom;
import hbue.pojo.Teacher;
import org.hibernate.Session;
import org.hibernate.Transaction;
public class classroomManagerBiz {
/**
*开设一个新的课堂，必修课
* @param couId
* @param classroomDes
* @param classesIdArrary
* @return
*/
public boolean saveNewClassroom(Teacher tea, String couId, String classroomDes, String[] classesIdArrary ){
// 三个参数分别代表课程id，课堂描述，班级的id数组
boolean ok = false;
Classroom classroom = null;
// ClassesClassroom classesClassroom = null;
// Classes classes = null;
Session session = MyFactory.getSession();
Transaction tx = null;
try {
tx = session.beginTransaction();
classroom = new Classroom();
classroom.setClaRoomId("ceshi001");
classroom.setDescription(classroomDes);
session.save(classroom);
tx.commit();
// for(int i = 0; i < classesIdArrary.length; i++){
// classesClassroom = new ClassesClassroom();
// classesClassroom.setProxyId("p004");
// classroom.setClaRoomId("c_r004");
// classes = (Classes)session.get(Classes.class, classesIdArrary[i]);
//// 通过班级id得到这个班级
// classesClassroom.setClasses(classes);
// classes.getClassesClassrooms().add(classesClassroom);
//// 设置"班级"和"班级-课堂"的对应关系
//
// classroom.getClassesClassrooms().add(classesClassroom);
// classesClassroom.setClassroom(classroom);
//// 设置"课堂"和"班级-课堂"的对应关系
// }
// classroom.setTeacher(tea);
// tea.getClassrooms().add(classroom);
//// 设置教师和课堂的关联
//
//
//// session.save(classesClassroom);
//
ok = true;
}catch (Exception e) {
if (tx != null) {
tx.rollback();
}
e.printStackTrace();
} finally {
session.close();
}
return ok;
}
public static void main(String[] args) {
classroomManagerBiz biz = new classroomManagerBiz();
Classroom classroom = new Classroom();
// classroom.setClaRoomId("clar100");
Teacher tea = new Teacher();
String[] str = {"a" ,"b"};
biz.saveNewClassroom(tea, "cou001", "ceshi", str);
}
}
配置文件
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!--
Mapping file autogenerated by MyEclipse Persistence Tools
-->
<hibernate-mapping>
<class name="hbue.pojo.Classroom" table="classroom">
<id name="claRoomId" type="java.lang.String">
<column name="cla_room_id" length="32" />
<generator class="increment" />
</id>
<many-to-one name="term" class="hbue.pojo.Term" cascade="save-update" not-null="false">
<column name="term_id" length="32" />
</many-to-one>
<many-to-one name="teacher" class="hbue.pojo.Teacher" cascade="save-update" not-null="false">
<column name="tea_id" length="32" />
</many-to-one>
<many-to-one name="course" class="hbue.pojo.Course" cascade="save-update" not-null="false">
<column name="cou_id" length="32" />
</many-to-one>
<property name="description" type="java.lang.String">
<column name="description" not-null="true" />
</property>
<property name="claTime" type="java.lang.String">
<column name="cla_time" length="32" />
</property>
<property name="place" type="java.lang.String">
<column name="place" length="10" />
</property>
<set name="stuClassrooms" inverse="true" cascade="save-update" lazy= "true" batch-size="5">
<key>
<column name="cla_room_id" length="32" not-null="false" />
</key>
<one-to-many class="hbue.pojo.StuClassroom" />
</set>
<set name="classesClassrooms" inverse="true" cascade="save-update" lazy= "true" batch-size="5">
<key>
<column name="cla_room_id" length="32" not-null="false" />
</key>
<one-to-many class="hbue.pojo.ClassesClassroom" />
</set>
</class>
</hibernate-mapping>
sql语句
/*==============================================================*/
/* Table: 学校 */
/*==============================================================*/
create table school (
sch_id varchar(32) not null,
sch_name varchar(32) not null,
constraint PK_school primary key (sch_id)
)
insert into school values("s001","湖北经济学院");
/*==============================================================*/
/* Table: 学院 */
/*==============================================================*/
create table academy (
aca_id varchar(32) not null,
aca_name varchar(32) not null,
sch_id varchar(32) ,
constraint PK_academy primary key (aca_id)
)
insert into academy values("a001","计算机学院","s001");
alter table academy
add constraint fk_academy_references_school foreign key (sch_id) references school (sch_id)
/*==============================================================*/
/* Table: 班级 */
/*==============================================================*/
create table classes (
cla_id varchar(32) not null,
cla_name varchar(32) not null,
aca_id varchar(32) null,
constraint PK_classes primary key(cla_id)
)
insert into classes values("c001","软件Q0441","a001");
insert into classes values("c002","网络Q0441","a001");
alter table classes
add constraint FK_classes_references_academy foreign key (aca_id)
references academy (aca_id)
/*==============================================================*/
/* Table: 教师 */
/*==============================================================*/
create table teacher (
tea_id varchar(32) not null,
tea_name char(10) not null,
tea_pass char(16) not null,
tea_sex char(4) not null,
tea_call char(10) null,
tea_intro varchar(255) null,
aca_id varchar(32) null,
constraint PK_teacher primary key (tea_id)
)
insert into teacher values("t001","李祥","123","男","讲师","我是一个讲师,我C语言讲的非常好","a001");
insert into teacher values("t002","关培超","123","男","讲师","我是一个讲师,我JAVA语言讲的非常好","a001");
insert into teacher values("t003","高见元","123","男","讲师","我是一个讲师,我算法讲的非常好","a001");
alter table teacher
add constraint FK_teacher_REFERENCE_academy foreign key (aca_id)
references academy (aca_id)
/*==============================================================*/
/* Table: 学生 */
/*==============================================================*/
create table student (
stu_id varchar(32) not null,
stu_name char(10) null,
stu_pass char(16) not null,
stu_sex char(4) null,
cla_id varchar(32) null,
constraint PK_学生 primary key (stu_id)
)
insert into student values("s001","武昆","123","男","c001");
insert into student values("s002","张国旗","123","男","c001");
insert into student values("s003","彭大立","123","男","c001");
insert into student values("s004","严忠斌","123","男","c001");
insert into student values("s005","倪超","123","男","c001");
insert into student values("s006","姜开训","123","男","c001");
insert into student values("s007","孙权","123","男","c001");
insert into student values("s008","黄庆峰","123","男","c001");
insert into student values("s009","陈旺民","123","男","c001");
insert into student values("s010","李小龙","123","男","c001");
insert into student values("s011","江小泉","123","男","c001");
insert into student values("s012","薛枚","123","女","c001");
insert into student values("s013","张小微","123","女","c001");
insert into student values("s014","袁珊","123","女","c001");
insert into student values("s015","王爽","123","女","c001");
alter table student
add constraint FK_student_REFERENCE_classes foreign key (cla_id)
references classes (cla_id)
/*==============================================================*/
/* Table: 课程 */
/*==============================================================*/
create table course (
cou_id varchar(32) not null,
cou_name varchar(32) null,
aca_id varchar(32) null,
constraint PK_course primary key (cou_id)
)
insert into course values('cou001','数据结构','a001')
insert into course values('cou002','C语言','a001')
insert into course values('cou003','JAVA语言','a001')
alter table course
add constraint FK_course_REFERENCE_academy foreign key (aca_id)
references academy (aca_id)
/*==============================================================*/
/* Table: 学期 */
/*==============================================================*/
create table term (
term_id varchar(32) not null,
term_name varchar(32) null,
constraint PK_term primary key (term_id)
)
insert into term values('t001','学期1')
/*==============================================================*/
/* Table: 课堂 */
/*==============================================================*/
create table classroom (
cla_room_id varchar(32) not null,
description varchar(255) not null,
cla_time varchar(32) null,
place varchar(10) null,
tea_id varchar(32) null,
cou_id varchar(32) null,
term_id varchar(32) null,
constraint PK_class_room primary key (cla_room_id)
)
insert into classroom values('c_r001','李老师带的数据结构课堂','周四三四节','J1-101','t001','cou001','t001')
insert into classroom values('c_r002','李老师带的C语言课堂','周三一二节','J2-101','t001','cou002','t001')
insert into classroom values('c_r003','关老师带的JAVA课堂','周一 5,6节','J2-101','t002','cou002','t001')
alter table classroom
add constraint FK_classroom_REFERENCE_term foreign key (term_ID)
references term (term_ID)
alter table classroom
add constraint FK_classroom_REFERENCE_course foreign key (cou_id)
references course (cou_id)
alter table classroom
add constraint FK_classroom_REFERENCE_teacher foreign key (tea_ID)
references teacher (tea_ID)
/*==============================================================*/
/* Table: 班级-课堂 */
/*==============================================================*/
create table classes_classroom(
proxy_id varchar(32) not null,
cla_room_id varchar(32) not null,
cla_id varchar(32) not null,
constraint PK_stu_classroom primary key (proxy_id)
)
alter table classes_classroom
add constraint FK_classes_classroom_REFERENCE_classroom foreign key (cla_room_id)
references classroom (cla_room_id)
alter table classes_classroom
add constraint FK_classes_classroom_REFERENCE_classes foreign key (cla_id)
references classes(cla_id)
/*==============================================================*/
/* Table: "学生-课堂" */
/*==============================================================*/
create table stu_classroom(
proxy_id varchar(32) not null,
stu_id varchar(32) not null,
cla_room_id varchar(32) not null,
cla_room_grade char(10) null,
exper_grade char(10) null,
exam_grade char(10) null,
finally_grade char(10) null,
constraint PK_stu_classroom primary key (proxy_id)
)
insert into stu_classroom values('proxy001','s001','c_r001','100','100','100','100')
insert into stu_classroom values('proxy002','s002','c_r001','100','100','100','100')
insert into stu_classroom values('proxy003','s003','c_r001','100','100','100','100')
insert into stu_classroom values('proxy004','s004','c_r001','100','100','100','100')
insert into stu_classroom values('proxy005','s005','c_r001','100','100','100','100')
insert into stu_classroom values('proxy006','s006','c_r001','100','100','100','100')
insert into stu_classroom values('proxy007','s007','c_r001','100','100','100','100')
insert into stu_classroom values('proxy008','s008','c_r001','100','100','100','100')
insert into stu_classroom values('proxy009','s009','c_r001','100','100','100','100')
insert into stu_classroom values('proxy010','s010','c_r001','100','100','100','100')
insert into stu_classroom values('proxy011','s011','c_r001','100','100','100','100')
insert into stu_classroom values('proxy012','s012','c_r001','100','100','100','100')
insert into stu_classroom values('proxy013','s013','c_r001','100','100','100','100')
insert into stu_classroom values('proxy014','s014','c_r001','100','100','100','100')
insert into stu_classroom values('proxy015','s015','c_r001','100','100','100','100')
insert into stu_classroom values('proxy016','s001','c_r002','100','100','100','100')
insert into stu_classroom values('proxy017','s002','c_r002','100','100','100','100')
insert into stu_classroom values('proxy018','s003','c_r002','100','100','100','100')
insert into stu_classroom values('proxy019','s004','c_r002','100','100','100','100')
insert into stu_classroom values('proxy020','s005','c_r002','100','100','100','100')
insert into stu_classroom values('proxy021','s006','c_r002','100','100','100','100')
insert into stu_classroom values('proxy022','s007','c_r002','100','100','100','100')
insert into stu_classroom values('proxy023','s008','c_r002','100','100','100','100')
insert into stu_classroom values('proxy024','s009','c_r002','100','100','100','100')
insert into stu_classroom values('proxy025','s010','c_r002','100','100','100','100')
insert into stu_classroom values('proxy026','s011','c_r002','100','100','100','100')
insert into stu_classroom values('proxy027','s012','c_r002','100','100','100','100')
insert into stu_classroom values('proxy028','s013','c_r002','100','100','100','100')
insert into stu_classroom values('proxy029','s014','c_r002','100','100','100','100')
insert into stu_classroom values('proxy030','s015','c_r002','100','100','100','100')
alter table stu_classroom
add constraint FK_stu_classroom_REFERENCE_student foreign key (stu_id)
references student (stu_id)
alter table stu_classroom
add constraint FK_stu_classroom_REFERENCE_classroom foreign key (cla_room_id)
references classroom (cla_room_id)
/*==============================================================*/
/* Table: 知识点 */
/*==============================================================*/
create table keyword(
key_id varchar(32) not null,
key_name varchar(32) not null,
cou_id varchar(32) null,
constraint PK_keyword primary key (key_id)
)
delete from keyword
insert into keyword values('kw001', '二叉树','cou001')
insert into keyword values('kw002', '链表','cou001')
insert into keyword values('kw003', '图','cou001')
insert into keyword values('kw004', '哈夫曼树','cou001')
insert into keyword values('kw005', '线性表','cou001')
insert into keyword values('kw006', '堆栈','cou001')
insert into keyword values('kw007', '综合','cou001')
insert into keyword values('kw008', '指针','cou002')
insert into keyword values('kw009', '数组','cou002')
insert into keyword values('kw010', '枚举','cou002')
insert into keyword values('kw011', '语法','cou002')
insert into keyword values('kw012', '综合','cou002')
insert into keyword values('kw013', '集合类','cou003')
insert into keyword values('kw014', '流','cou003')
insert into keyword values('kw015', '多态','cou003')
insert into keyword values('kw016', '继承','cou003')
alter table keyword
add constraint FK_keyword_REFERENCE_course foreign key (cou_id)
references course (cou_id)
/*==============================================================*/
/* Table: 题目 */
/*==============================================================*/
create table exercise (
exercise_id varchar(32) not null,
exer_description varchar(32) null,
exer_content varchar(255) not null,
exer_type varchar(10) null,
exer_diff varchar(10) null,
exer_writetime varchar(32) null,
exer_reference_result varchar(255) null,
cou_id varchar(32) null,
key_id varchar(32) null,
constraint PK_exercise primary key (exercise_id)
)
drop table exercise
insert into exercise values('e001','这是习题描述','这是习题的内容','单选题','简单','2008-4-16','a','cou001','kw001')
insert into exercise values('e002','这是习题描述','这是习题的内容','单选题','简单','2008-4-16','a','cou001','kw001')
insert into exercise values('e003','这是习题描述','这是习题的内容','单选题','简单','2008-4-16','a','cou001','kw001')
insert into exercise values('e004','这是习题描述','这是习题的内容','单选题','简单','2008-4-16','a','cou001','kw001')
insert into exercise values('e005','这是习题描述','这是习题的内容','单选题','简单','2008-4-16','a','cou001','kw002')
insert into exercise values('e006','这是习题描述','这是习题的内容','单选题','简单','2008-4-16','a','cou001','kw002')
insert into exercise values('e007','这是习题描述','这是习题的内容','单选题','简单','2008-4-16','a','cou001','kw002')
insert into exercise values('e008','这是习题描述','这是习题的内容','单选题','简单','2008-4-16','a','cou001','kw002')
insert into exercise values('e009','这是习题描述','这是习题的内容','单选题','简单','2008-4-16','a','cou001','kw003')
insert into exercise values('e010','这是习题描述','这是习题的内容','单选题','简单','2008-4-16','a','cou001','kw003')
insert into exercise values('e011','这是习题描述','这是习题的内容','单选题','简单','2008-4-16','a','cou001','kw003')
insert into exercise values('e012','这是习题描述','这是习题的内容','单选题','简单','2008-4-16','a','cou001','kw003')
alter table exercise
add constraint FK_exercise_REFERENCE_course foreign key (cou_id)
references course (cou_id)
alter table exercise
add constraint FK_exercise_REFERENCE_keyword foreign key (key_id)
references keyword (key_id)
/*=============连接查询==============
select * from teacher as t,classroom as cl,course as co where t.tea_id = "t001"
and cl.tea_id = t.tea_id and cl.cou_id = co.cou_id
/*====================================
select * from teacher as t,classroom as cl,course as co where t.tea_id = 't001' and cl.tea_id = t.tea_id and cl.cou_id = co.cou_id
select * from exercise as e where e.exer_type = '单选题' and e.exer_diff = '简单' and e.cou_id = 'cou001' and 1=1
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时间：2008-05-09
影射文件中你的claRoomId字段类型是 <generator class="increment" />标识符生成器,为自动生成代理并为自增型,而该字段是String,不能使用increment,所以你也不能set了.
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