吐槽Hibernate

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Hibernate 下午深究一下，在做OnetoMany的时候，其实是使用在循环里边做查询，一个查询，做了12次IO，整体上是方便了，不过性能堪忧

select count(item0_.itemId) as col_0_0_ from item item0_ where item0_.state=1

select item0_.itemId as itemId5_, item0_.descr as descr5_, item0_.isPublic as isPublic5_, item0_.price as price5_, item0_.state as state5_, item0_.time as time5_, item0_.title as title5_, item0_.type as type5_, item0_.userId as userId5_
from item item0_ where item0_.state=1 order by item0_.time desc limit 1,10
select picitemlis0_.itemId as itemId5_1_, picitemlis0_.picItemId as picItemId1_, picitemlis0_.picItemId as picItemId11_0_, picitemlis0_.itemId as itemId11_0_, picitemlis0_.path as path11_0_, picitemlis0_.time as time11_0_ from pic_item picitemlis0_ where picitemlis0_.itemId=?
select picitemlis0_.itemId as itemId5_1_, picitemlis0_.picItemId as picItemId1_, picitemlis0_.picItemId as picItemId11_0_, picitemlis0_.itemId as itemId11_0_, picitemlis0_.path as path11_0_, picitemlis0_.time as time11_0_ from pic_item picitemlis0_ where picitemlis0_.itemId=?
select picitemlis0_.itemId as itemId5_1_, picitemlis0_.picItemId as picItemId1_, picitemlis0_.picItemId as picItemId11_0_, picitemlis0_.itemId as itemId11_0_, picitemlis0_.path as path11_0_, picitemlis0_.time as time11_0_ from pic_item picitemlis0_ where picitemlis0_.itemId=?
select picitemlis0_.itemId as itemId5_1_, picitemlis0_.picItemId as picItemId1_, picitemlis0_.picItemId as picItemId11_0_, picitemlis0_.itemId as itemId11_0_, picitemlis0_.path as path11_0_, picitemlis0_.time as time11_0_ from pic_item picitemlis0_ where picitemlis0_.itemId=?
select picitemlis0_.itemId as itemId5_1_, picitemlis0_.picItemId as picItemId1_, picitemlis0_.picItemId as picItemId11_0_, picitemlis0_.itemId as itemId11_0_, picitemlis0_.path as path11_0_, picitemlis0_.time as time11_0_ from pic_item picitemlis0_ where picitemlis0_.itemId=?
select picitemlis0_.itemId as itemId5_1_, picitemlis0_.picItemId as picItemId1_, picitemlis0_.picItemId as picItemId11_0_, picitemlis0_.itemId as itemId11_0_, picitemlis0_.path as path11_0_, picitemlis0_.time as time11_0_ from pic_item picitemlis0_ where picitemlis0_.itemId=?
select picitemlis0_.itemId as itemId5_1_, picitemlis0_.picItemId as picItemId1_, picitemlis0_.picItemId as picItemId11_0_, picitemlis0_.itemId as itemId11_0_, picitemlis0_.path as path11_0_, picitemlis0_.time as time11_0_ from pic_item picitemlis0_ where picitemlis0_.itemId=?
select picitemlis0_.itemId as itemId5_1_, picitemlis0_.picItemId as picItemId1_, picitemlis0_.picItemId as picItemId11_0_, picitemlis0_.itemId as itemId11_0_, picitemlis0_.path as path11_0_, picitemlis0_.time as time11_0_ from pic_item picitemlis0_ where picitemlis0_.itemId=?
select picitemlis0_.itemId as itemId5_1_, picitemlis0_.picItemId as picItemId1_, picitemlis0_.picItemId as picItemId11_0_, picitemlis0_.itemId as itemId11_0_, picitemlis0_.path as path11_0_, picitemlis0_.time as time11_0_ from pic_item picitemlis0_ where picitemlis0_.itemId=?
select picitemlis0_.itemId as itemId5_1_, picitemlis0_.picItemId as picItemId1_, picitemlis0_.picItemId as picItemId11_0_, picitemlis0_.itemId as itemId11_0_, picitemlis0_.path as path11_0_, picitemlis0_.time as time11_0_ from pic_item picitemlis0_ where picitemlis0_.itemId=?

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