mybatis中的example问题

where A and (B or C) =>（A and B）or (A and C)

Criteria c1 = example.createCriteria();
Criteria c2 = example.createCriteria();

c1.andDelmarkEqualTo(1).andCodeLike("%"+keyword+"%");

c2.andDelmarkEqualTo(1).andNameLike("%"+keyword+"%");

example.or(c2);