奇怪的hibernate.hbm2ddl.auto行为

Question

我使用hibernate.hbm2ddl.auto = create部署了一个应用程序，发现我的许多表被删除了！我曾经做过同样的事情，但是使用EclipseLink而不是Hibernate，数据库返回表已经存在，这意味着它只启动创建表。我怀疑hibernate.hbm2ddl.auto设置为“创建”如果删除，然后创建表。

有人能证实我的怀疑吗？谢谢你帮忙。

Answer 1

这是我的hibernate配置文件，它可以工作。

<!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD//EN"
    "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>

        <!-- Database connection settings -->
        <property name="connection.driver_class">org.h2.Driver</property>
        <property name="connection.url">jdbc:h2:tcp://localhost/mem:test:MVCC=true;INIT=create schema IF NOT EXISTS OVT;DB_CLOSE_DELAY=10</property>
        <property name="connection.username">sa</property>
        <property name="connection.password"></property>

        <!-- JDBC connection pool (use the built-in) -->
        <property name="connection.pool_size">100</property>

        <!-- SQL dialect -->
        <property name="dialect">org.hibernate.dialect.H2Dialect</property>

        <!-- Disable the second-level cache -->
        <property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>

        <!-- Echo all executed SQL to stdout -->
        <property name="show_sql">true</property>

        <!-- Drop and re-create the database schema on startup -->
        <property name="hbm2ddl.auto">create</property>

        <mapping class="model.concretes.varlik.Tasit" />
        <mapping class="model.concretes.varlik.Kisi" />
        <mapping class="model._framework.concretes.varlik.Log" />
        <mapping class="model._framework.concretes.varlik.Yetki" />
    </session-factory>
</hibernate-configuration>