Jpa OpenEJB&x2B；EclipseLink无法在HSQL数据库上创建表

我有一个使用javaeeweb概要文件的vanillamavenwar项目，它使用OpenEJB执行单元/集成测试。在OpenEJB启动期间，OpenEJB不使用jndi.properties中定义的数据源，而是创建自己的：

INFO - Auto-creating a Resource with id 'Default JDBC Database' of type 'DataSource for 'scmaccess-unit'.
INFO - Creating Resource(id=Default JDBC Database)
INFO - Configuring Service(id=Default Unmanaged JDBC Database, type=Resource, provider-id=Default Unmanaged JDBC Database)
INFO - Auto-creating a Resource with id 'Default Unmanaged JDBC Database' of type 'DataSource for 'scmaccess-unit'.
INFO - Creating Resource(id=Default Unmanaged JDBC Database)
INFO - Adjusting PersistenceUnit scmaccess-unit <jta-data-source> to Resource ID 'Default JDBC Database' from 'jdbc/scmaccess'
INFO - Adjusting PersistenceUnit scmaccess-unit <non-jta-data-source> to Resource ID 'Default Unmanaged JDBC Database' from 'null'

jndi.properties文件：

##
# Context factory to use during tests
##
java.naming.factory.initial=org.apache.openejb.client.LocalInitialContextFactory

##
# The DataSource to use for testing
##
scmDatabase=new://Resource?type=DataSource
scmDatabase.JdbcDriver=org.hsqldb.jdbcDriver
scmDatabase.JdbcUrl=jdbc:hsqldb:mem:scmaccess

##
# Override persistence unit properties
##
scmaccess-unit.eclipselink.jdbc.batch-writing=JDBC
scmaccess-unit.eclipselink.target-database=Auto
scmaccess-unit.eclipselink.ddl-generation=drop-and-create-tables
scmaccess-unit.eclipselink.ddl-generation.output-mode=database

以及，测试用例：

public class PersistenceTest extends TestCase {

    @EJB
    private GroupManager ejb;

    @Resource
    private UserTransaction transaction;

    @PersistenceContext
    private EntityManager emanager;

    public void setUp() throws Exception {
        EJBContainer.createEJBContainer().getContext().bind("inject", this);
    }

    public void test() throws Exception {
        transaction.begin();
        try {
            Group g = new Group("Saas Automation");
            emanager.persist(g);
        } finally {
            transaction.commit();
        }
    }
}

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看起来eclipselink正在尝试创建一个类型为NUMBER的列，而该类型在HSQL中不存在。您是否在映射中指定了该类型？如果是，则修复该问题

否则，添加

    <property name="eclipselink.ddl-generation" value="drop-and-create-tables"/>
    <property name="eclipselink.create-ddl-jdbc-file-name" value="createDDL_ddlGeneration.jdbc"/>
    <property name="eclipselink.drop-ddl-jdbc-file-name" value="dropDDL_ddlGeneration.jdbc"/>
    <property name="eclipselink.ddl-generation.output-mode" value="both"/>

---

这解决了有关类型的问题，但它没有解释为什么在jndi.properties中已经定义了数据源时仍然创建数据源（我还尝试通过properties对象通过programmaticaly这样做）。我不知道OpenEJB为什么会这样做。最好把这个问题分成一个单独的问题。

    <property name="eclipselink.ddl-generation" value="drop-and-create-tables"/>
    <property name="eclipselink.create-ddl-jdbc-file-name" value="createDDL_ddlGeneration.jdbc"/>
    <property name="eclipselink.drop-ddl-jdbc-file-name" value="dropDDL_ddlGeneration.jdbc"/>
    <property name="eclipselink.ddl-generation.output-mode" value="both"/>

@Column(columnDefinition="NUMERIC")