小编zer*_*erg的帖子

对不起我的英语不好.

我有2张桌子:

Table1
id
table2_id
num
modification_date 

和

Table2
id
table2num

我想打一个触发器,它插入或删除操作后在Table1更新的最后一个值num的Table2.table1lastnum.

我的触发器:

CREATE OR REPLACE TRIGGER TABLE1_NUM_TRG
  AFTER INSERT OR DELETE ON table1
  FOR EACH ROW
BEGIN
  IF INSERTING then

  UPDATE table2
  SET    table2num = :new.num
  WHERE  table2.id = :new.table2_id;

  ELSE

  UPDATE table2
  SET    table2num = (SELECT num FROM  (SELECT num FROM table1 WHERE table2_id = :old.table2_id ORDER BY modification_date DESC) WHERE ROWNUM <= 1)
  WHERE  table2.id = :old.table2_id;

  END IF;

END TABLE1_NUM_TRG; …

如果a f:viewParam为空,我会进行重定向(或错误)吗？

<f:metadata>
    <f:viewParam name="accountId" value="#{accountMB.id}"/>
</f:metadata>

当我添加时required="true",没有任何反应.有什么选择？

我有以下导航规则:

<navigation-rule>
    <from-view-id>/pages/*</from-view-id>
    <navigation-case>
        <from-outcome>test</from-outcome>
        <to-view-id>/pages/test/edit.xhtml</to-view-id>
    </navigation-case>
</navigation-rule>

TestMB:

public String test() {
    return "test?id=1";
}

和test.xhtml:

<h:commandLink action="#{testMB.test}">click</h:commandLink>

但是,如果这是行不通的话return "test?id=1";.我不想使用return "/pages/test/edit.xhtml?id=1";,我想使用抽象名称test.