可嵌入数据库与toplink

Question

我在试着让toplink和jsqlite开始工作。但我得到了一个类似的错误，如以下线程：JPA+SQLite problem

Exception Description: SEQ_GEN_SEQUENCE: platform DatabasePlatform doesn't support NativeSequence.

我不确定它是否适用于toplink，因为我在某个地方找不到描述。我只需要一个可嵌入的数据库，所以只要这些建议易于设置，就可以提供替代建议。

这是persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
    http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
  <persistence-unit name="myPU" transaction-type="RESOURCE_LOCAL">

    <provider>oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider</provider>
    <class>..</class>
    <properties>
      <property name="toplink.jdbc.url" value="jdbc:sqlite:blah.db"/>
      <property name="toplink.jdbc.driver" value="org.sqlite.JDBC"/>
      <property name="toplink.ddl-generation" value="create-tables"/>
    </properties>

  </persistence-unit>
</persistence>

Answer 1

从…

异常描述: SEQ_GEN_SEQUENCE: platform DatabasePlatform不支持NativeSequence

你试过用表格排序代替吗？

有关更多信息，请参见：

• http://wiki.eclipse.org/Introduction_to_Relational_Projects_%28ELUG%29#Table_Sequencing
• http://wiki.eclipse.org/Introduction_to_EclipseLink_JPA_(ELUG)#Configuring_Sequence_Generation