我該如何編寫休眠標準

對於HQL-1＃

select activity from EmployeeActivity activity 
    join activity.activityStep as step 
    where 
    activity.currentStep = 1; 

Criteria ctr = getSession().createCriteria(EmployeeActivity.class) 
    .createCriteria("activityStep")//Where activityStep is the another entity which is joined 
    .add(Restrictions.eq("currentStep", 1))

但我應該怎麼寫了下面的HQL查詢？而且，最佳做法是什麼？

select activity from EmployeeActivity activity 
    join activity.activityStep as step 
    where 
    activity.currentStep = step.stepNumber;

來源

2012-04-25 gviswanathan

是'activityStep'引用或收藏？爲什麼currentStep數字不是對Step的引用？ – Firo 2012-04-26 09:58:20

activityStep只是引用另一個表，這就是爲什麼使用簡單的連接。上面的查詢使用EMPLOYEE_ACTIVITY_ID簡單地連接到兩個EmployeeActivity＆ActivityStep表。 – gviswanathan 2012-04-26 16:50:04

雖然我不知道查詢應該做什麼

Criteria ctr = getSession().createCriteria(EmployeeActivity.class) 
    .createAlias("activityStep", "step") 
    .add(Restrictions.propertyEq("currentStep", "step.stepNumber"));

來源

2012-04-27 06:00:47 Firo

我該如何編寫休眠標準

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