[eclipsecnbj]

Myeclips 5.01
hibernate 3.1,spring

Datebase ,mysql,test
db url is : jdbc:mysql://localhost:3306/test

table: user

1. Datebalse Explorer

I user Datebalse Explorer(Reverse Engineering) to create User.hbm.xml ,User.class,UserDAO.class

I chose the pakege “com.h819.hibernate”,but the created file always be created in defaut pakege “src”!
I tried serveral times,it alway do the same thing!
I have to move them to com.h819.hibernate pakege,and have to change the sources.

2. the created User.hbm.xml file

<hibernate-mapping package=”com.h819.hibernate”>
<class name=”User” table=”user” catalog=”test”>
<id name=”id” type=”java.lang.Long”>
<column name=”id” />
<generator class=”native”></generator>
</id>
<property name=”name” type=”java.lang.String”>
<column name=”name” not-null=”true” />
</property>
<property name=”password” type=”java.lang.String”>
<column name=”password” not-null=”true” />
</property>
</class>
</hibernate-mapping>

pay attention: catalog=”test”
If have the string catalog=”test” , I will get the exception
java.sql.SQLException: Table ‘test.test__user’ doesn’t exist

I delete the string catalog=”test” as below
<hibernate-mapping package=”com.h819.hibernate”>
<class name=”User” table=”user”>
<id name=”id” type=”java.lang.Long”>
<column name=”id” />
<generator class=”native”></generator>
</id>
<property name=”name” type=”java.lang.String”>
<column name=”name” not-null=”true” />
</property>
<property name=”password” type=”java.lang.String”>
<column name=”password” not-null=”true” />
</property>
</class>
</hibernate-mapping>

I will get the right result!

So ,hibernate tool of Myeclipse should check the generator templete of hibernate if catalog=”test” should add to the hbm file.

[eclipsecnbj]

and the third problem

3. spring DAO

I use it to create srping DAO

UserDAO.java has some methods.one is

public User findById(java.lang.Long id) {
log.debug(“getting User instance with id: ” + id);
try {
User instance = (User) getHibernateTemplate()
.get(“com.h819.hibernate.User”, id);

return instance;
} catch (RuntimeException re) {
log.error(“get failed”, re);
throw re;
}
}

“com.h819.hibernate.User” is a string.
because the first problem,the User.java is created in default pakege “src” ,so the first time is get(“User”, id)! It is wrong,because I move the User.java to com.h819.hibernate pakege myselft,I spend a day to check the reason.

“com.h819.hibernate.User” is a string,so can not check the wrong, get(User.class,id) do the same thing,and User is a java object,the ide can check it ,so if Myeclipse can change the generator of hibernate templete?
Use object ,not string.

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