【hibernate】使用or查询语句时生成的sql语句括号没了

原来的sql:

String sql = "select t from applications t where 1=1
  and ((t.state = 'DRAFT' and t.creater = '1111')
  or (t.state = 'EXE' and t.leader = '1111'))"

生成的sql:

select t from applications t where 1=1
  and (t.state = 'DRAFT' and t.creater = '1111'
  or t.state = 'EXE' and t.leader = '1111')

原因：and 的 优先级高于 or，所以两个语句其实是一样的