使用Ant自动化发开Hibernate

<?xml version="1.0" encoding="UTF-8"?>   
   
<project name="hibernatetools" basedir="." default="useHibernateTool">   
       
    <!-- 导入build.properties文件，该文件定义一些常量，这些常量也可以是用<property name="" value="">的形式定义 -->   
    <property file="build.properties"></property>   
       
    <!-- 定义依赖包所在的位置，"${reference_libs_dir}"表示引用名为"reference_libs_dir"的常量 -->   
    <path id="referencelib">   
        <fileset dir="${reference_libs_dir}">   
            <!-- 匹配模式，表示该目录下所有jar文件 -->   
            <include name="**/*.jar"/>   
        </fileset>   
    </path>   
       
    <!-- 自定义Ant Task，但是使用的自定义类为Hibernate为我们提供的 -->   
    <taskdef name="hibernatetool" classname="org.hibernate.tool.ant.HibernateToolTask" classpathref="referencelib"></taskdef>   
       
    <!-- 使用hibernatetool -->   
    <target name="useHibernateTool">   
        <hibernatetool>   
            <!-- 指定资源搜索位置 -->   
            <classpath>   
                <path location="${source_folder_dir}"></path>   
                <path location="bin"></path>   
            </classpath>   
               
            <!-- 指定Hibernate的配置文件 -->   
            <configuration configurationfile="${source_folder_dir}/hibernate.cfg.xml"/>   
               
            <!-- 根据hbm生成java代码 -->   
            <hbm2java jdk5="true" destdir="${source_folder_dir}"/>   
            <!-- 根据hbm生成databaseSchema -->   
            <hbm2ddl destdir="${database_schema_dir}" export="true" outputfilename="sqlStatement.sql" format="true"/>   
        </hibernatetool>   
    </target>   
</project>

source_folder_dir=src   
reference_libs_dir=referencelibs   
database_schema_dir=dbschema

<?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">   
    <hibernate-mapping>   
        <class name="com.beliefbetrayal.hibernate.pojos.Customer" table="customer">   
            <!-- 主键设置 -->   
            <id name="id" type="string">   
                <column name="id"></column>   
                <generator class="uuid"></generator>   
            </id>   
            <!-- 属性设置 -->   
            <property name="username" column="username" type="string"></property>   
            <property name="balance" column="balance" type="integer"></property>   
               
            <set name="orders" inverse="true" cascade="all">   
                <key column="customer_id" ></key>   
                <one-to-many class="com.beliefbetrayal.hibernate.pojos.Order"/>   
            </set>   
        </class>   
    </hibernate-mapping>

package com.beliefbetrayal.hibernate.pojos;   
// Generated 2012-2-8 1:10:59 by Hibernate Tools 3.3.0.GA   
   
import java.util.HashSet;   
import java.util.Set;   
   
/**   
 * Customer generated by hbm2java   
 */   
public class Customer  implements java.io.Serializable {   
   
   
     private String id;   
     private String username;   
     private Integer balance;   
     private Set<Order> orders = new HashSet<Order>(0);   
   
    public Customer() {   
    }   
   
    public Customer(String username, Integer balance, Set<Order> orders) {   
       this.username = username;   
       this.balance = balance;   
       this.orders = orders;   
    }   
      
    public String getId() {   
        return this.id;   
    }   
       
    public void setId(String id) {   
        this.id = id;   
    }   
    public String getUsername() {   
        return this.username;   
    }   
       
    public void setUsername(String username) {   
        this.username = username;   
    }   
    public Integer getBalance() {   
        return this.balance;   
    }   
       
    public void setBalance(Integer balance) {   
        this.balance = balance;   
    }   
    public Set<Order> getOrders() {   
        return this.orders;   
    }   
       
    public void setOrders(Set<Order> orders) {   
        this.orders = orders;   
    }   
}

create table customer (   
        id varchar(255) not null,   
        username varchar(255),   
        balance integer,   
        primary key (id)   
    );   
   
    create table orders (   
        id varchar(255) not null,   
        orderNumber varchar(255),   
        cost integer,   
        customer_id varchar(255),   
        primary key (id)   
    );   
   
    alter table orders    
        add index FKC3DF62E51E0069B1 (customer_id),    
        add constraint FKC3DF62E51E0069B1    
        foreign key (customer_id)    
        references customer (id);