create ? table ?typestu?(id? varchar ( 32 )? primary ? key ,name? varchar ( 32 ),homeaddr? varchar ( 32 ),workaddr? varchar ( 32 ));

<? xml?version='1.0'?encoding='UTF-8' ?>
<! DOCTYPE?hibernate-configuration?PUBLIC
??????????"-//Hibernate/Hibernate?Configuration?DTD?3.0//EN"
??????????"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd" >

<!-- ?Generated?by?MyEclipse?Hibernate?Tools.??????????????????? -->
< hibernate-configuration >

< session-factory >
???? < property? name ="connection.username" > root </ property >
???? < property? name ="connection.url" >
????????jdbc:mysql://localhost:3306/schoolproject?characterEncoding=gb2312 &amp; useUnicode=true
???? </ property >
???? < property? name ="dialect" >
????????org.hibernate.dialect.MySQLDialect
???? </ property >
???? < property? name ="myeclipse.connection.profile" > mysql </ property >
???? < property? name ="connection.password" > 1234 </ property >
???? < property? name ="connection.driver_class" >
????????com.mysql.jdbc.Driver
???? </ property >
???? < property? name ="hibernate.dialect" >
????????org.hibernate.dialect.MySQLDialect
???? </ property >
???? < property? name ="hibernate.show_sql" > true </ property >
???? < property? name ="current_session_context_class" > thread </ property >
???? < mapping? resource ="Search/UserType/Student.hbm.xml" ? />

</ session-factory >

</ hibernate-configuration >

package ?Search.UserType;


public ? class ?Student? ... {
???? private ?String?id;? // 標識id
???? private ?String?name;? // 學生姓名
???? private ?AddressType?address; // 地址
???? public ?String?getId()? ... {
???????? return ?id;
????}
???? public ? void ?setId(String?id)? ... {
???????? this .id? = ?id;
????}
???? public ?String?getName()? ... {
???????? return ?name;
????}
???? public ? void ?setName(String?name)? ... {
???????? this .name? = ?name;
????}
???? public ?AddressType?getAddress()? ... {
???????? return ?address;
????}
???? public ? void ?setAddress(AddressType?address)? ... {
???????? this .address? = ?address;
????}

?
?
?
}

package ?Search.UserType;

import ?java.io.Serializable;
import ?java.sql.PreparedStatement;
import ?java.sql.ResultSet;
import ?java.sql.SQLException;
import ?java.sql.Types;

import ?org.apache.commons.lang.builder.EqualsBuilder;
import ?org.apache.commons.lang.builder.HashCodeBuilder;
import ?org.hibernate.HibernateException;
import ?org.hibernate.usertype.UserType;

public ? class ?AddressType? implements ?UserType,?Serializable? ... {
???? private ?String?homeAddr;
???? private ?String?workAddr;

???? /**/ /* ?有幾個字段就有幾個值，這里容易出錯，要多注意? */
???? private ? static ? final ? int []?SQL_TYPES? = ? ... {?Types.VARCHAR,?Types.VARCHAR?} ;

???? /**/ /* ?這個方法告訴Hibernate在成生DDL時對列采用什么樣的SQL語法? */
???? public ? int []?sqlTypes()? ... {
???????? return ?SQL_TYPES;
????}

???? /**/ /*
?????*?Hibernate返回什么樣的映射類型，與?<property?name="address"?type="model.AddressType">
?????*?指定的類一致。事實上也可以把AddressType拆分為兩個類，一個類是只攜帶信息的JavaBean，它里面
?????*?沒有邏輯操作也沒有實現UserType（比如AddressBean）；而另一個類實現了UserType，它所面對的就不是現在這個
?????*?AddressType類的homeAddr和homeAddr屬性，它面對的是AddressBean。在本例中為了簡潔方便，只用了一個類。
????? */
???? public ?Class?returnedClass()? ... {
???????? return ?AddressType. class ;
????}

???? /**/ /*
?????*?表明這個類的實例在創建以后就不可以改變屬性。Hibernate能為不可改變的類作一些性能優化。
????? */
???? public ? boolean ?isMutable()? ... {
???????? return ? false ;
????}

???? /**/ /*
?????*?由于AddressType是不可變的，所以深拷貝可以直接返回對象引用。拷貝的對象由應用程序使用，?而原版對象由Hibernate維護以做臟數據檢查
????? */
???? public ?Object?deepCopy(Object?value)? ... {
???????? return ?value;? // ?Address?is?immutable
????}

???? /**/ /* ?兩個對象是否相等，使用了apache的common工具包來進行屬性比對? */
???? public ? boolean ?equals(Object?x,?Object?y)? ... {
???????? if ?(x? == ?y)
???????????? return ? true ;
???????? if ?(x? == ? null ? || ?y? == ? null )
???????????? return ? false ;
????????AddressType?add1? = ?(AddressType)?x;
????????AddressType?add2? = ?(AddressType)?y;
???????? return ? new ?EqualsBuilder()? // 使用EqualsBuilder類來方便地進行比對
????????????????.append(add1.getHomeAddr(),?add2.getHomeAddr()).append(
????????????????????????add2.getWorkAddr(),?add2.getWorkAddr()).isEquals();
????}

???? /**/ /* ?得到hash碼? */

???? public ? int ?hashCode(Object?x)? throws ?HibernateException? ... {
????????AddressType?address? = ?(AddressType)?x;
???????? return ? new ?HashCodeBuilder() // 使用HashCodeBuilder類來方便地進行比對
????????????????.append(address.getHomeAddr()).append(address.getWorkAddr())
????????????????.toHashCode();
????}

???? /**/ /* ?讀取數據并組裝成一個AddressType對象。names[]中的參數順序依照映射文件中定義的順序? */
???? public ?Object?nullSafeGet(ResultSet?rs,?String[]?names,?Object?owner)
???????????? throws ?HibernateException,?SQLException? ... {
???????? if ?(rs.wasNull())
???????????? return ? null ;
????????String?homeAddr? = ?rs.getString(names[ 0 ]);
????????String?schoolAddr? = ?rs.getString(names[ 1 ]);
????????AddressType?address? = ?