你好人對不起,如果這個問題看起來愚蠢的你。 我有3個表貨幣(ID |名稱)語言(ID |名稱|說明)交易(ID |量| languageId | currencyid)休眠單向一對多。我有點困惑
所以我要插入事務,但確保它不會插入未知的語言或貨幣(這意味着它不應該插入到messagetemplate如果沒有現有的父語言和貨幣)
這裏是我的映射文件
<?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.myproject.model">
<class name="Transaction" table="transaction">
<id name="id">
<generator class="native"/>
</id>
<property column="amount" name="amount" type="String"/>
<many-to-one class="CurrencyImpl" column="currency" name="currency"/>
<many-to-one class="LanguageImpl" column="language" name="language"/>
</class>
</hibernate-mapping>
<?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.myproject.model">
<class name="Currency" table="currency">
<id name="id">
<generator class="native"/>
</id>
<property column="currency_name" name="name" type="String"/>
</class>
</hibernate-mapping>
<?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.myproject.model">
<class name="Language" table="language">
<id name="id">
<generator class="native"/>
</id>
<property column="language_name" name="name" type="String"/>
<property column="language_description" name="description" type="String"/>
</class>
</hibernate-mapping>
這個當前映射它似乎不是這樣的情況。如何實現?非常感謝您的閱讀
你能真正指出發生了什麼問題嗎?你遇到了什麼錯誤? – Jherico 2009-10-26 19:39:29