Balconsky Balconsky - 11 days ago 5
Java Question

Hibernate does not create tables automatically

I have Maven project with Hibernate and Spring framework.
I want Hibernate to create tables automatically, but all existing tables are just dropped and the required tables are not created.
No exceptions are thrown during session factory initialization, but when I try save a

Player
entity, exception is thrown:


com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'billboarddb.player' doesn't exist


If I create the tables manually and change the property
hibernate.hbm2ddl.auto
to
"validate"
, then everything works fine.
Do you have any idea, why Hibernate does not create the tables?

Spring configuration file:

<context:component-scan base-package="org.meluk.billboard.business.controller" />
<tx:annotation-driven transaction-manager="txManager" />
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations" >
<list>
<value>/WEB-INF/config/jdbc.properties</value>
</list>
</property>
</bean>
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${hibernate.connection.driver_class}" />
<property name="url" value="${hibernate.connection.url}" />
<property name="username" value="${hibernate.connection.username}" />
<property name="password" value="${hibernate.connection.password}" />
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean" >
<property name="dataSource" ref="dataSource" />
<property name="configLocation" value="/WEB-INF/hibernate.cfg.xml" />
<property name="packagesToScan" value="org.meluk.billboard.jpa" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${hibernate.dialect}</prop>
<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
<prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}</prop>
<prop key="hibernate.c3p0.min_size">${hibernate.c3p0.min_size}</prop>
<prop key="hibernate.c3p0.max_size">${hibernate.c3p0.max_size}</prop>
<prop key="hibernate.c3p0.timeout">${hibernate.c3p0.timeout}</prop>
<prop key="hibernate.c3p0.max_statements">${hibernate.c3p0.max_statements}</prop>
</props>
</property>
</bean>

<bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>


jdbc.properties file:

hibernate.connection.driver_class=com.mysql.jdbc.Driver
hibernate.connection.url=jdbc:mysql://127.0.0.1:3306/BillboardDB
hibernate.connection.username=root
hibernate.connection.password=1234
hibernate.default_schema=BillboardDB
hibernate.dialect=org.hibernate.dialect.MySQLInnoDBDialect
hibernate.hbm2ddl.auto=create
hibernate.show_sql=true
hibernate.c3p0.min_size=5
hibernate.c3p0.max_size=20
hibernate.c3p0.timeout=1800
hibernate.c3p0.max_statements=50


Hibernate dependencies:

<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>${hibernateVersion}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-c3p0</artifactId>
<version>${hibernateVersion}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-tools</artifactId>
<version>${hibernateToolsVersion}</version>
</dependency>

Answer

I solve the problem. Hibernate could not create tables with MysqlInnoDBDialect. Now I use MySQL5InnoDBDialect instead.

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