hiernate集合映射

CollectionMapping 类

public class CollectionMapping {

// 私有对象


private Integer id;


private String name;


private String[] strValues;


private List<String> listValues = new ArrayList<String>();


private Set<String> setValues = new HashSet<String>();


private Map<String,String> mapValues = new HashMap<String, String>();


// 封装对象


public Integer getId() {


return id;


}


public void setId(Integer id) {


this.id = id;


}


public String getName() {


return name;


}


public void setName(String name) {


this.name = name;


}


public String[] getStrValues() {


return strValues;


}


public void setStrValues(String[] strValues) {


this.strValues = strValues;


}


public List<String> getListValues() {


return listValues;


}


public void setListValues(List<String> listValues) {


this.listValues = listValues;


}


public Set<String> getSetValues() {


return setValues;


}


public void setSetValues(Set<String> setValues) {


this.setValues = setValues;


}


public Map<String, String> getMapValues() {


return mapValues;


}


public void setMapValues(Map<String, String> mapValues) {


this.mapValues = mapValues;


}

}

CollectionMapping.hbm.xml配置文件

<?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 package="com.bjsxt.hibernate">


<class name="CollectionMapping" table="t_collection">


<id name="id">


<column name="id"></column>


<generator class="native"></generator>


</id>


<property name="name">


<column name="name"></column>


</property>


<!-- 配置数组关联映射 -->


<array name="strValues" table="t_array">


<key column="aid"></key>  <!-- 对应主表的id，也就是数据表t_collection的主键id值 -->


<list-index column="indexId"></list-index>  <!-- 数组的索引值 -->


<element type="java.lang.String" column="realValue"></element>  <!-- 在该数组表中存放的实际的值 -->


</array>


<!-- 配置List关联映射 -->


<list name="listValues" table="t_list">


<key column="lid"></key>


<list-index column="indexId"></list-index>


<element type="java.lang.String" column="realValue"></element>


</list>


<!-- 配置Map关联映射 -->


<map name="mapValues" table="t_map">


<key column="mid"></key>


<map-key type="java.lang.String" column="keyId"></map-key>


<element type="java.lang.String" column="realValue"></element>


</map>


<!-- 配置Set关联映射 -->


<set name="setValues" table="t_set">


<key column="sid"></key>


<element type="java.lang.String" column="realValue"></element>


</set>


</class>


</hibernate-mapping>

测试代码

public static void main(String[] args) {
SessionFactory sessionFactory = null;
new SchemaExport(HibernateSessionFactory.getConfiguration()).create(false, true);
   sessionFactory = HibernateSessionFactory.getSessionFactory();
// 创建数组对象


   String[] strArray = new String[3];


   strArray[0]="cheng";


   strArray[1]="zeng";


   strArray[2]="zhang";


   // 创建List对象


   List<String> dataList = new ArrayList<String>();


   dataList.add("s1");


   dataList.add("s2");


   dataList.add("y2");


   // 创建Set对象


   Set<String> dataSet = new HashSet<String>();


   dataSet.add("Microsoft");


   dataSet.add("Google");


   dataSet.add("IBM");


   // 创建Map对象


   Map<String,String> dataMap = new HashMap<String, String>();


   dataMap.put("America", "美国");


   dataMap.put("China", "中国");


   dataMap.put("Russia", "俄国");


   // 创建CollectionMapping对象


   CollectionMapping cm = new CollectionMapping();


   // 设置CollectionMapping对象的值


   cm.setName("我的大学");


   cm.setListValues(dataList);


   cm.setMapValues(dataMap);


   cm.setSetValues(dataSet);


   cm.setStrValues(strArray);


   // 创建Session对象


   Session session = sessionFactory.getCurrentSession();


   // 执行添加操作


   session.save(cm);


   // 提交事务


   session.beginTransaction().commit();


   // 关闭事务

}

数据库