Question

我有数据库问题。在下面的控制器中，我试图在带有传入ID的记录上切换布尔值。当我使用ebean语法时，我可以查询，插入和删除但不能更新。好像我无法在更新时提交我的交易，但是他们会通过其他操作自动提交。当我使用JPA语法时，似乎我正在与内存数据库交互而不是配置的postgresql。我这样说是因为当我查询时我得到了null。但是如果我使用JPA插入记录，我将随后能够成功查询和更新它。但是这些更新不会出现在postgres中，而且我查询过的记录中设置的唯一字段是id和boolean标志。

这是我的代码和配置。谢谢！

来自build.sbt

libraryDependencies ++= Seq(
  javaJdbc,
  javaEbean,
  javaJpa,
  "org.hibernate" % "hibernate-entitymanager" % "4.3.6.Final",
  "play2-crud" %% "play2-crud" % "0.7.4-SNAPSHOT",
  cache,
  javaWs,
  "javax.mail" % "javax.mail-api" % "1.5.2",
  "javax.activation" % "activation" % "1.1.1",
  "postgresql" % "postgresql" % "9.1-901-1.jdbc4"
)

来自application.conf

# Database configuration
# ~~~~~
db.default.driver=org.postgresql.Driver
db.default.url="postgres://username:password@localhost/playdb"
db.default.autocommit=true

# You can expose this datasource via JNDI if needed (Useful for JPA)
db.default.jndiName=DefaultDS

jpa.default=defaultPersistenceUnit

# Ebean configuration
# ~~~~~
ebean.default="models.*"

来自persistence.xml的

org.hibernate.ejb.HibernatePersistence DefaultDS的

来自我的控制器

// JPA style
@Transactional
public static Result toggleMailboxJpa(Long mailbox)
{
    // does not update
    MailboxConfig x = JPA.em().find(MailboxConfig.class, mailbox);
    x.suspended = !x.suspended;

    // transactional appears to work, these have no effect
    JPA.em().persist(x);
    JPA.em().flush();

    return redirect("/admin/mailboxStatus");
}

@Transactional
public static Result toggleMailboxEbean(Long mailbox)
{
    MailboxConfig x = MailboxConfig.find.byId(mailbox);
    x.suspended = !x.suspended;
    x.update();

    // this syntax has the same effect (reads from the db fine but does not commit)
    /*
    MailboxConfig x = Ebean.find(MailboxConfig.class).where().eq("id", mailbox).findUnique();
    x.suspended = !x.suspended;
    Ebean.save(x);
    */

    return redirect("/admin/mailboxStatus");
}

Answer 1

尝试

x.update(mailbox)

使用“mailbox”id

在游戏2.3.x中，ebean和jpa都有不同的失败

1 个答案: