SQL Hibernate和或限制

Question

我的SQL應該是這樣的：

select cell1 from table 
where cell2 = 1 
and (cell3 = '' or cell3 is null) 

但如何做休眠的 「和（X或Y）」 restricion？

Answer 1

什麼LogicalExpression

嘗試此和條件：

Criteria cr = session.createCriteria(table.class); 

// To get records matching with AND condistions 
LogicalExpression andExp = Restrictions.and(cell2, cell3); 
cr.add(andExp); 

對於OR條件使用該

// To get records matching with OR condistions 
    LogicalExpression orExp = Restrictions.or(cell2, cell3); 
    cr.add(orExp); 

List results = cr.list();