Hibernate逍遥游记-第8章 映射组成关系(<component>、<parent>)

一、

1.

 1 <?xml version="1.0"?>
 2 <!DOCTYPE hibernate-mapping
 3 PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
 4 "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
 5 <hibernate-mapping >
 6 
 7   <class name="mypack.Monkey" table="MONKEYS" >
 8     <id name="id" type="long" column="ID">
 9       <generator class="increment"/>
10     </id>
11 
12     <property name="name" type="string" column="NAME" />
13  
14     <component name="homeAddress" class="mypack.Address">
15             <parent name="monkey" />
16             <property name="province" type="string" column="HOME_PROVINCE"/>
17             <property name="city" type="string" column="HOME_CITY"/>
18             <property name="street" type="string" column="HOME_STREET"/>
19             <property name="zipcode" type="string" column="HOME_ZIPCODE"/>
20     </component>
21         
22     <component name="comAddress" class="mypack.Address">
23            <parent name="monkey" />
24            <property name="province" type="string" column="COM_PROVINCE"/> 
25            <property name="city" type="string" column="COM_CITY"/>
26            <property name="street" type="string" column="COM_STREET"/> 
27            <property name="zipcode" type="string" column="COM_ZIPCODE"/>
28     </component>
29   </class>
30 
31 </hibernate-mapping>

 

2.

 1 package mypack;
 2 public class Monkey {
 3 
 4 
 5      private long id;
 6      private String name;
 7      private Address homeAddress;
 8      private Address comAddress;
 9 
10     public Monkey() {
11     }
12 
13     public Monkey(String name, Address homeAddress, Address comAddress) {
14        this.name = name;
15        this.homeAddress = homeAddress;
16        this.comAddress = comAddress;
17     }
18    
19     public long getId() {
20         return this.id;
21     }
22     
23     public void setId(long id) {
24         this.id = id;
25     }
26     public String getName() {
27         return this.name;
28     }
29     
30     public void setName(String name) {
31         this.name = name;
32     }
33     public Address getHomeAddress() {
34         return this.homeAddress;
35     }
36     
37     public void setHomeAddress(Address homeAddress) {
38         this.homeAddress = homeAddress;
39     }
40     public Address getComAddress() {
41         return this.comAddress;
42     }
43     
44     public void setComAddress(Address comAddress) {
45         this.comAddress = comAddress;
46     }
47 
48 
49 
50 
51 }

 

3.

 1 package mypack;
 2 public class Address {
 3 
 4 
 5      private String province;
 6      private String city;
 7      private String street;
 8      private String zipcode;
 9      private Monkey monkey;
10 
11     public Address() {
12     }
13 
14     public Address(String province, String city, String street, String zipcode,Monkey monkey) {
15        this.province = province;
16        this.city = city;
17        this.street = street;
18        this.zipcode = zipcode;
19        this.monkey=monkey;
20     }
21    
22     public String getProvince() {
23         return this.province;
24     }
25     
26     public void setProvince(String province) {
27         this.province = province;
28     }
29     public String getCity() {
30         return this.city;
31     }
32     
33     public void setCity(String city) {
34         this.city = city;
35     }
36     public String getStreet() {
37         return this.street;
38     }
39     
40     public void setStreet(String street) {
41         this.street = street;
42     }
43     public String getZipcode() {
44         return this.zipcode;
45     }
46     
47     public void setZipcode(String zipcode) {
48         this.zipcode = zipcode;
49     }
50 
51     public Monkey getMonkey() {
52         return this.monkey;
53     }
54 
55     public void setMonkey(Monkey monkey) {
56         this.monkey = monkey;
57     }
58 
59 
60 
61 }

 

二、电脑例子

4.

 1 <?xml version="1.0"?>
 2 <!DOCTYPE hibernate-mapping
 3 PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
 4 "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
 5 <hibernate-mapping >
 6 
 7   <class name="mypack.Computer" table="COMPUTERS" >
 8     <id name="id" type="long" column="ID">
 9       <generator class="increment"/>
10     </id>
11 
12     <property name="type" type="string" >
13         <column name="COMPUTER_TYPE" />
14     </property>
15     
16     <component name="cpuBox" class="mypack.CpuBox">
17             <parent name="computer" />
18             
19             <property name="type" type="string" >
20                 <column name="CPUBOX_TYPE" />
21             </property>
22             
23             <component name="graphicsCard" class="mypack.GraphicsCard">
24                <parent name="cpuBox" />
25               
26                <property name="type" type="string" >
27                   <column name="GRAPHICSCARD_TYPE" />
28                </property>
29 
30             </component>
31 
32             <many-to-one
33                 name="vendor"
34                 column="CPUBOX_VENDOR_ID"
35                 class="mypack.Vendor"
36                 not-null="true" 
37             />
38     </component>
39   </class>
40  
41 
42 </hibernate-mapping>

 

5.

 1 <?xml version="1.0"?>
 2 <!DOCTYPE hibernate-mapping
 3 PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
 4 "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
 5 <hibernate-mapping >
 6 
 7   <class name="mypack.Vendor" table="VENDORS" >
 8     <id name="id" type="long" column="ID">
 9       <generator class="increment"/>
10     </id>
11 
12     <property name="type" type="string" >
13         <column name="TYPE" length="15" />
14     </property>
15     
16   
17   </class>
18 
19 </hibernate-mapping>

 

6.

 1 package mypack;
 2 public class Computer {
 3 
 4 
 5      private long id;
 6      private String type;
 7      private CpuBox cpuBox;
 8 
 9     public Computer() {
10     }
11 
12     
13     public Computer(CpuBox cpuBox) {
14         this.cpuBox = cpuBox;
15     }
16     public Computer(String type, CpuBox cpuBox) {
17        this.type = type;
18        this.cpuBox = cpuBox;
19     }
20    
21     public long getId() {
22         return this.id;
23     }
24     
25     public void setId(long id) {
26         this.id = id;
27     }
28     public String getType() {
29         return this.type;
30     }
31     
32     public void setType(String type) {
33         this.type = type;
34     }
35     public CpuBox getCpuBox() {
36         return this.cpuBox;
37     }
38     
39     public void setCpuBox(CpuBox cpuBox) {
40         this.cpuBox = cpuBox;
41     }
42 
43 
44 
45 
46 }

 

7.

 1 package mypack;
 2 public class CpuBox {
 3 
 4 
 5      private String type;
 6      private GraphicsCard graphicsCard;
 7      private Vendor vendor;
 8      private Computer computer; 
 9     public CpuBox() {
10     }
11 
12     
13     public CpuBox(Vendor vendor) {
14         this.vendor = vendor;
15     }
16     public CpuBox(String type, GraphicsCard graphicsCard, Vendor vendor,Computer computer) {
17        this.type = type;
18        this.graphicsCard = graphicsCard;
19        this.vendor = vendor;
20        this.computer=computer;  
21     }
22    
23     public String getType() {
24         return this.type;
25     }
26     
27     public void setType(String type) {
28         this.type = type;
29     }
30     public GraphicsCard getGraphicsCard() {
31         return this.graphicsCard;
32     }
33     
34     public void setGraphicsCard(GraphicsCard graphicsCard) {
35         this.graphicsCard = graphicsCard;
36     }
37     public Vendor getVendor() {
38         return this.vendor;
39     }
40     
41     public void setVendor(Vendor vendor) {
42         this.vendor = vendor;
43     }
44 
45     public Computer getComputer() {
46         return this.computer;
47     }
48     
49     public void setComputer(Computer computer) {
50         this.computer=computer;
51     }
52 
53 
54 
55 }

 

8.

 1 package mypack;
 2 
 3 
 4 
 5 public class GraphicsCard  {
 6 
 7 
 8      private String type;
 9      private CpuBox cpuBox;
10 
11     public GraphicsCard() {
12     }
13 
14     public GraphicsCard(String type,CpuBox cpuBox) {
15        this.type = type;
16        this.cpuBox=cpuBox;
17     }
18    
19     public String getType() {
20         return this.type;
21     }
22     
23     public void setType(String type) {
24         this.type = type;
25     }
26 
27     public CpuBox getCpuBox() {
28         return this.cpuBox;
29     }
30     
31     public void setCpuBox(CpuBox cpuBox) {
32         this.cpuBox = cpuBox;
33     }
34 
35 
36 }

 

9.

 1 package mypack;
 2 public class Vendor {
 3 
 4 
 5      private long id;
 6      private String type;
 7 
 8     public Vendor() {
 9     }
10 
11     public Vendor(String type) {
12        this.type = type;
13     }
14    
15     public long getId() {
16         return this.id;
17     }
18     
19     public void setId(long id) {
20         this.id = id;
21     }
22     public String getType() {
23         return this.type;
24     }
25     
26     public void setType(String type) {
27         this.type = type;
28     }
29 
30 
31 
32 
33 }

 

10.

 1 use sampledb;
 2 drop table if exists COMPUTERS;
 3 drop table if exists MONKEYS;
 4 drop table if exists VENDORS;
 5 
 6 create table MONKEYS (ID bigint not null, NAME varchar(15), HOME_PROVINCE varchar(255), 
 7 HOME_CITY varchar(255), HOME_STREET varchar(255), HOME_ZIPCODE varchar(255), 
 8 COM_PROVINCE varchar(255), COM_CITY varchar(255), 
 9 COM_STREET varchar(255), COM_ZIPCODE varchar(255), primary key (ID));
10 
11 create table COMPUTERS (ID bigint not null, COMPUTER_TYPE varchar(15), 
12 CPUBOX_TYPE varchar(15), GRAPHICSCARD_TYPE varchar(15), 
13 CPUBOX_VENDOR_ID bigint not null, primary key (ID));
14 
15 create table VENDORS (ID bigint not null, TYPE varchar(15), primary key (ID));
16 
17 alter table COMPUTERS add index IDX_VENDOR (CPUBOX_VENDOR_ID),
18 add constraint FK_VENDOR foreign key (CPUBOX_VENDOR_ID) 
19 references VENDORS (ID);

 

11.

 1 <?xml version="1.0" encoding="utf-8" ?>
 2 <!DOCTYPE hibernate-configuration
 3  PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
 4  "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
 5 
 6 <hibernate-configuration>
 7     <session-factory>
 8         <property name="dialect">
 9             org.hibernate.dialect.MySQLDialect
10         </property>
11         <property name="connection.driver_class">
12             com.mysql.jdbc.Driver
13         </property>
14         <property name="connection.url">
15             jdbc:mysql://localhost:3306/sampledb
16         </property>
17         <property name="connection.username">
18             root
19         </property>
20         <property name="connection.password">
21             1234
22         </property>
23 
24         <property name="show_sql">true</property>
25 
26         <mapping resource="mypack/Monkey.hbm.xml" />
27         <mapping resource="mypack/Computer.hbm.xml" />
28         <mapping resource="mypack/Vendor.hbm.xml" />
29 
30     </session-factory>
31 </hibernate-configuration>

 

posted @ 2016-03-20 15:29  shamgod  阅读(268)  评论(0)  编辑  收藏  举报
haha