hibernate annotation 主键生成策略有关问题

hibernate annotation 主键生成策略问题
hibernate annotation 主键生成策略问题:
  我有一个表,主键是id varchar(32) <pk,fk>
  我应该怎样设置annotation,让id既是uuid的生成策略,又是外键了.(与外表是多对一关联).
 最好有例子啊!!谢谢啊

[解决办法]
<?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="com.mmc.bean.Brand" table="brand" schema="dbo" catalog="computerdb" lazy="false">
<id name="bid" type="java.lang.String">
<column name="bid" length="32" />
<generator class="uuid.hex" />
</id>
<property name="bname" type="java.lang.String">
<column name="bname" length="30" />
</property>
<set name="montherboards" inverse="true">
<key>
<column name="brand_id" length="32" />
</key>
<one-to-many class="com.mmc.bean.Montherboard" />
</set>
<set name="models" inverse="true">
<key>
<column name="bid" length="32" />
</key>
<one-to-many class="com.mmc.bean.Model" />
</set>
<set name="monitors" inverse="true">
<key>
<column name="brand_id" length="32" />
</key>
<one-to-many class="com.mmc.bean.Monitor" />
</set>
<set name="cpus" inverse="true">
<key>
<column name="brand_id" length="32" />
</key>
<one-to-many class="com.mmc.bean.Cpu" />
</set>
<set name="memories" inverse="true">
<key>
<column name="brand_id" length="32" />
</key>
<one-to-many class="com.mmc.bean.Memory" />
</set>
<set name="keyboards" inverse="true">
<key>
<column name="brand_id" length="32" />
</key>
<one-to-many class="com.mmc.bean.Keyboard" />
</set>
<set name="videos" inverse="true">
<key>
<column name="brand_id" length="32" />
</key>
<one-to-many class="com.mmc.bean.Video" />
</set>
<set name="mouses" inverse="true">
<key>
<column name="brand_id" length="32" />
</key>
<one-to-many class="com.mmc.bean.Mouse" />
</set>
<set name="harddisks" inverse="true">
<key>
<column name="brand_id" length="32" />
</key>
<one-to-many class="com.mmc.bean.Harddisk" />

</set>
</class>
</hibernate-mapping>

[解决办法]
package com.mmc.bean;

import java.util.HashSet;
import java.util.Set;

/**
 * Brand generated by MyEclipse Persistence Tools
 */

public class Brand implements java.io.Serializable {

// Fields

private String bid;

private String bname;

private Set montherboards = new HashSet(0);

private Set models = new HashSet(0);

private Set monitors = new HashSet(0);

private Set cpus = new HashSet(0);

private Set memories = new HashSet(0);

private Set keyboards = new HashSet(0);

private Set videos = new HashSet(0);

private Set mouses = new HashSet(0);

private Set harddisks = new HashSet(0);

// Constructors

/** default constructor */
public Brand() {
}

/** minimal constructor */
public Brand(String bid, String bname) {
this.bid = bid;
this.bname = bname;
}

/** full constructor */
public Brand(String bid, String bname, Set montherboards, Set models,
Set monitors, Set cpus, Set memories, Set keyboards, Set videos,
Set mouses, Set harddisks) {
this.bid = bid;
this.bname = bname;
this.montherboards = montherboards;
this.models = models;
this.monitors = monitors;
this.cpus = cpus;
this.memories = memories;
this.keyboards = keyboards;
this.videos = videos;
this.mouses = mouses;
this.harddisks = harddisks;
}

// Property accessors

public String getBid() {
return this.bid;
}

public void setBid(String bid) {
this.bid = bid;
}

public String getBname() {
return this.bname;
}

public void setBname(String bname) {
this.bname = bname;
}

public Set getMontherboards() {
return this.montherboards;
}

public void setMontherboards(Set montherboards) {
this.montherboards = montherboards;
}

public Set getModels() {
return this.models;
}

public void setModels(Set models) {
this.models = models;
}

public Set getMonitors() {
return this.monitors;
}

public void setMonitors(Set monitors) {
this.monitors = monitors;
}

public Set getCpus() {
return this.cpus;
}

public void setCpus(Set cpus) {
this.cpus = cpus;
}

public Set getMemories() {
return this.memories;
}

public void setMemories(Set memories) {
this.memories = memories;
}

public Set getKeyboards() {
return this.keyboards;
}

public void setKeyboards(Set keyboards) {
this.keyboards = keyboards;
}

public Set getVideos() {
return this.videos;
}

public void setVideos(Set videos) {
this.videos = videos;
}

public Set getMouses() {
return this.mouses;
}

public void setMouses(Set mouses) {
this.mouses = mouses;
}

public Set getHarddisks() {
return this.harddisks;
}

public void setHarddisks(Set harddisks) {
this.harddisks = harddisks;
}

}
[解决办法]
package com.mmc.bean;

import java.util.HashSet;
import java.util.Set;

public class Montherboard implements java.io.Serializable {

private String boardId;

private Brand brand;

private String chipset;

private Set configures = new HashSet(0);

public Montherboard() {

}

public Montherboard(String boardId, Brand brand, String chipset) {
this.boardId = boardId;
this.brand = brand;
this.chipset = chipset;
}

/** full constructor */
public Montherboard(String boardId, Brand brand, String chipset,
Set configures) {
this.boardId = boardId;
this.brand = brand;
this.chipset = chipset;
this.configures = configures;
}

// Property accessors

public String getBoardId() {
return this.boardId;
}

public void setBoardId(String boardId) {
this.boardId = boardId;
}

public Brand getBrand() {
return this.brand;
}

public void setBrand(Brand brand) {
this.brand = brand;
}

public String getChipset() {
return this.chipset;
}

public void setChipset(String chipset) {
this.chipset = chipset;
}

public Set getConfigures() {
return this.configures;
}

public void setConfigures(Set configures) {
this.configures = configures;
}

}