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  • Hibernate 再接触 组件映射

    将另外一个类嵌入到另外一个类 从而合并生成一张表

    Husband.java

    package com.bjsxt.hibernate;
    
    import javax.persistence.Embedded;
    import javax.persistence.Entity;
    import javax.persistence.GeneratedValue;
    import javax.persistence.Id;
    import javax.persistence.JoinColumn;
    import javax.persistence.JoinColumns;
    import javax.persistence.OneToOne;
    
    @Entity
    public class Husband {
        private int id;
        private String name;
        private Wife wife;
        @Id
        @GeneratedValue
        public int getId() {
            return id;
        }
        
        public String getName() {
            return name;
        }
        @Embedded
        public Wife getWife() {
            return wife;
        }
        public void setId(int id) {
            this.id = id;
        }
        public void setName(String name) {
            this.name = name;
        }
        public void setWife(Wife wife) {
            this.wife = wife;
        }
        
    }

    wifi.java

    package com.bjsxt.hibernate;
    
    
    
    public class Wife {
        
        private String wifeName;
        private int age;
        
        public int getAge() {
            return age;
        }
        public void setAge(int age) {
            this.age = age;
        }
            
        public String getWifeName() {
            return wifeName;
        }
        public void setWifeName(String name) {
            this.wifeName = name;
        }
        
    }

    使用Xml

    <?xml version="1.0"?>
    <!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.bjsxt.hibernate.Husband" >
            <id name="id">
                <generator class="native"></generator>
            </id>
            
            <property name="name"></property>
            <component name="wife">
                <property name="wifeName"></property>
                <property name="age"></property>
            </component>
        </class>
        
    </hibernate-mapping>

    测试

        @Test
        public void testSchemaExport() {
            new SchemaExport(new AnnotationConfiguration().configure()).create(false, true);
        }
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  • 原文地址:https://www.cnblogs.com/frankzone/p/9598766.html
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