Question

我正在使用HSQL在我的java应用程序上运行许多单元测试。我正在使用Spring + Hibernate。从MySQL切换到HSQL时遇到问题。测试在MySQL上完美运行，但每当我改为HSQL时，我都会遇到以下异常：

Caused by: org.hsqldb.HsqlException: invalid schema name: LMS
at org.hsqldb.error.Error.error(Unknown Source)
at org.hsqldb.error.Error.error(Unknown Source)
at org.hsqldb.SchemaManager.getSchemaHsqlName(Unknown Source)
at org.hsqldb.SchemaManager.getSchemaName(Unknown Source)
at org.hsqldb.Session.getSchemaName(Unknown Source)
at org.hsqldb.SchemaManager.getTable(Unknown Source)
at org.hsqldb.ParserDQL.readTableName(Unknown Source)
at org.hsqldb.ParserDQL.readSimpleRangeVariable(Unknown Source)
at org.hsqldb.ParserDML.compileInsertStatement(Unknown Source)
at org.hsqldb.ParserCommand.compilePart(Unknown Source)
at org.hsqldb.ParserCommand.compileStatement(Unknown Source)
at org.hsqldb.Session.compileStatement(Unknown Source)
at org.hsqldb.StatementManager.compile(Unknown Source)
at org.hsqldb.Session.execute(Unknown Source)

我的Spring配置如下：

<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="org.hsqldb.jdbc.JDBCDriver" />
    <property name="url" value="jdbc:hsqldb:file:lms" />
    <property name="username" value="SA"/>
    <property name="password" value=""/>
</bean>


<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
    <property name="dataSource" ref="dataSource" />

    <property name="packagesToScan">
        <list>
            <value>com.dreamteam.lms.**.*</value>
        </list>
    </property>

    <property name="hibernateProperties">
        <props>
            <!--<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>-->
            <prop key="hibernate.dialect">org.hibernate.dialect.HSQLDialect</prop>
            <prop key="hibernate.generate_statistics">true</prop>
            <prop key="hibernate.show_sql">false</prop>
            <prop key="hibernate.cache.use_second_level_cache">true</prop>
            <prop key="hibernate.cache.use_query_cache">true</prop>
            <prop key="hibernate.cache.provider_class">net.sf.ehcache.hibernate.SingletonEhCacheProvider</prop>
        </props>
    </property>
</bean>

我的一个班级的样本注释：

@Entity
@Table(name = "answer", catalog = "lms")
public class Answer implements Cloneable, Serializable, IPojoGenEntity, IAnswer {
.
.

任何见解都将受到赞赏。

此致克里斯

Answer 1

制作“create-schema.sql”文件

CREATE SCHEMA lms;

添加“dataSourceInitializer”bean

<bean id="dataSourceInitializer" class="org.springframework.jdbc.datasource.init.DataSourceInitializer">
    <property name="dataSource" ref="dataSource" />
    <property name="databasePopulator">
        <bean class="org.springframework.jdbc.datasource.init.ResourceDatabasePopulator">
            <property name="continueOnError" value="true" />
            <property name="scripts">
                <list>
                    <value>classpath:SQL/create-schema.sql</value>
                </list>
            </property>
        </bean>
    </property>
</bean>

将“depends-on”属性设置为“sessionFactory”bean

<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean" depends-on="dataSourceInitializer">
...

Answer 2

我在测试期间使用以下bean来创建模式。

public class HSQLSchemaCreator {

    private String schemaName;

    private DataSource dataSource;

    public HSQLSchemaCreator(String schemaName, DataSource dataSource) {
        this.schemaName = schemaName;
        this.dataSource = dataSource;
    }


    @PostConstruct
    public void postConstruct() throws Exception {
        JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
        jdbcTemplate.execute("CREATE SCHEMA " + schemaName + " AUTHORIZATION DBA");
    }

}

弹簧配置：

  <bean id="hsqlSchemaCreator" class="....HSQLSchemaCreator">
       <constructor-arg name="schemaName" value="..."/>
       <constructor-arg name="dataSource" ref="dataSource"/>
  </bean>

<!-- Override entityManagerFactory to depend on hsqlSchemaCreator for tests  -->
<bean id="entityManagerFactory"  class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" depends-on="hsqlSchemaCreator">

依旧......

Answer 3

只是为了记录，我设法通过简单地从我的Hibernate实体中删除'catalog'属性来解决这个问题。因此，

@Entity
@Table(name = "answer", catalog = "lms")

成了

@Entity
@Table(name = "answer")

Answer 4

模式，表，列等的名称在MySQL中不区分（至少不是默认情况下）区分大小写。 HSQLDB区分大小写，但它还将查询中未引用的所有标识符转换为大写。

您可以通过在任何地方将模式名称更改为LMS来快速测试这是您的问题（首先在数据库中）。您可以在此处找到有关HSQLDB和Hibernate的更多详细信息：HSQLDB No such table Exception

Answer 5

我不确定为什么这行得通，但至少对我来说，在表名和模式周围加方括号对我有用：

@Table(name = "schema.tableName")

成为

@Table(name = "[schema].[tableName]")

HSQL org.hsqldb.HsqlException：模式名称无效

5 个答案: