使用CompositeUserType和使用UserType一樣，但CompositeUserType多了HQL的查詢支持，并相對(duì)比較復(fù)雜，一般使用UserType就足夠了
使用UserType參考 http://blog.csdn.net/daryl715/archive/2007/12/10/1927502.aspx ?
下面給出UserType不同的AddressType和測(cè)試代碼：
?
package
?Search.CompositeUserType;
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.Hibernate;
import
?org.hibernate.HibernateException;
import
?org.hibernate.engine.SessionImplementor;
import
?org.hibernate.type.Type;
import
?org.hibernate.usertype.CompositeUserType;
import
?org.hibernate.usertype.UserType;
public
?
class
?AddressType?
implements
?CompositeUserType,?Serializable?
{
????
private
?String?homeAddr;
????
private
?String?workAddr;
?
????
/*
獲得屬性名數(shù)組，屬性名可用于進(jìn)行HQL查詢??
*/
????
????
public
?String[]?getPropertyNames()?
{
????????
return
?
new
?String[]?
{?
"
homeAddr
"
,?
"
schoolAddr
"
?}
;
????}
????
/*
獲得對(duì)應(yīng)的屬性類型，必須和屬性名數(shù)組元素的順序相對(duì)應(yīng)??
*/
????
public
?Type[]?getPropertyTypes()?
{
????????
return
?
new
?Type[]?
{?Hibernate.STRING,?Hibernate.STRING?}
;
????}
????
/*
通過index取得對(duì)象的屬性值，index從0開始，順序和配置文件中定義屬性的順序一致???
*/
????
public
?Object?getPropertyValue(Object?component,?
int
?property)
????????????
throws
?HibernateException?
{
????????AddressType?address?
=
?(AddressType)?component;
????????
if
?(property?
==
?
0
)
????????????
return
?address.getHomeAddr();
????????
else
????????????
return
?address.getWorkAddr();
????}
????
/*
根據(jù)index設(shè)置對(duì)象屬性??
*/
????
public
?
void
?setPropertyValue(Object?component,?
int
?property,?Object?value)
????????????
throws
?HibernateException?
{
????????AddressType?address?
=
?(AddressType)?component;
????????String?add_value?
=
?(String)value;
????????
if
?(property?
==
?
0
)
????????????address.setHomeAddr(add_value);
????????
else
????????????address.setWorkAddr(add_value);
????????
????}
????
/*
返回對(duì)應(yīng)的映射類
*/
????
public
?Class?returnedClass()?
{
????????
return
?AddressType.
class
;
????}
????
/*
?兩個(gè)對(duì)象是否相等，使用了apache的common工具包來進(jìn)行屬性比對(duì)?
*/
????
public
?
boolean
?equals(Object?x,?Object?y)?
throws
?HibernateException?
{
????????
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(jìn)行比對(duì)
????????????????.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(jìn)行比對(duì)
????????????????????.append(address.getHomeAddr()).append(address.getWorkAddr())
????????????????????.toHashCode();
????}
????
/*
?讀取數(shù)據(jù)并組裝成一個(gè)AddressType對(duì)象。names[]中的參數(shù)順序依照映射文件中定義的順序?
*/
????
public
?Object?nullSafeGet(ResultSet?rs,?String[]?names,
????????????SessionImplementor?session,?Object?owner)
????????????
throws
?HibernateException,?SQLException?
{
????????
if
?(rs.wasNull())
????????????
return
?
null
;
????????String?homeAddr?
=
?rs.getString(names[
0
]);
????????String?schoolAddr?
=
?rs.getString(names[
1
]);
????????AddressType?address?
=
?
new
?AddressType(homeAddr,?schoolAddr);
????????
return
?address;
????}
????
/*
?保存數(shù)據(jù)，index的順序按照映射文件定義的順序，從0開始。?
*/
?
????
public
?
void
?nullSafeSet(PreparedStatement?st,?Object?value,?
int
?index,
????????????SessionImplementor?session)?
throws
?HibernateException,?SQLException?
{
????????AddressType?address?
=
?(AddressType)?value;
????????
if
?(value?
==
?
null
)?
{
??????????????st.setNull(index,?Types.VARCHAR);
??????????????st.setNull(index
+
1
,?Types.VARCHAR);
????????}
?
else
?
{
????????????st.setString(index,?address.getHomeAddr());
????????????st.setString(index?
+
?
1
,?address.getWorkAddr());
????????}
?????????System.out.println(
"
Data?has?been?saved!?
"
);
????}
????
/*
完整拷貝一個(gè)對(duì)象，而不是直接返回它的引用?????
*/
????
public
?Object?deepCopy(Object?value)?
throws
?HibernateException?
{
????????
if
?(value?
==
?
null
)
????????????
return
?
null
;
????????AddressType?address?
=
?(AddressType)?value;
????????
return
?
new
?AddressType(address.getHomeAddr(),?address.getWorkAddr());
????}
????
/*
設(shè)置類可變，可以通過屬性的set方法改變屬性值
*/
????
public
?
boolean
?isMutable()?
{
?????????
return
?
true
;
????}
????
/*
?當(dāng)把AddressType類型數(shù)據(jù)寫入二級(jí)緩存時(shí)，此方法被調(diào)用?
*/
????
public
?Serializable?disassemble(Object?value,?SessionImplementor?session)
????????????
throws
?HibernateException?
{
????????
return
?(Serializable)?deepCopy(value);
????}
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