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我想在 Apache ODE 的源代码中使用 OpenJPA 创建一个新表。我创建了一个接口并提供了一个实现。我使用 Maven 编译了该过程并将其部署在 Apache Tomcat 上。但是，当我在 Apache ODE 引擎上运行 BPEL 流程时，出现错误：

org.apache.openjpa.persistence.PersistenceException：表/视图“ODE_POLICY_ATTACHMENT”不存在。

我在 ApacheODE\dao-jpa\src\main\resources\META-INF\persistence.xml 中添加了我的 PolicyAttachmentDAOImpl 类

persistence xmlns="http://java.sun.com/xml/ns/persistence"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         version="1.0">
<persistence-unit name="ode-dao">
    <!-- 
        This properties file is used specifically by the
        OpenJPA Enhancer.
     -->
    <provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider>
    <class>org.apache.ode.dao.jpa.ProcessDAOImpl</class>
    <class>org.apache.ode.dao.jpa.PolicyAttachmentDAOImpl</class>
    .............................................................
</persistence-unit>

我的 DAO（数据访问对象）接口：

public interface PolicyAttachmentDAO {

 /**
 * Get the process.
 * 
 * @return process reference.
 */
 ProcessDAO getProcess();

 ...............
}

然后我在这样的类中实现了它：

@Entity
@Table(name = "ODE_POLICY_ATTACHMENT")
/**
 * 
 *       OpenJPA implementation of the {@link PolicyAttachmentDAO} interface.
 * 
 */
public class PolicyAttachmentDAOImpl extends OpenJPADAO implements PolicyAttachmentDAO{
@Id
@Column(name = "POLICYATTACHMENT_ID")
@GeneratedValue(strategy = GenerationType.AUTO)
private Long _attachmentId;

@ManyToOne(fetch = FetchType.LAZY, cascade = { CascadeType.PERSIST })
@Column(name = "PROCESS_ID")
private ProcessDAOImpl _process;

@Basic
@Column(name = "POLICYATTACHMENT_NAME")
private String _attachmentName;

@Basic
@Column(name = "POLICYATTACHMENT_FILE_DATE")
private Date _attachmentFileDate;

    public PolicyAttachmentDAOImpl(ProcessDAOImpl process, String policyAttachmentName, Date attachmentFileDate) {
      _process = process;
      _attachmentName = policyAttachmentName;
      _attachmentFileDate = attachmentFileDate;
    }

     public ProcessDAO getProcess() {
      return _process;
}

  .....................
 }

谁能指导我如何创建表格？

谢谢！彼得

4

1 回答 1

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我设法生成了我的表。Apache ODE 的源代码中有更多persistence.xml 文件，我没有编辑正确的文件。将我的 PolicyAttachmentDAOImpl 类添加到 ApacheODE\dao-jpa-ojpa-derby\src\test\resources\META-INF\persistence.xml 后，该表已创建。

于 2014-02-05T14:15:29.960 回答