Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ] (8[}CeL
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 %IWPM"
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 ^<2p~h0
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 lt8|9"9<
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分页支持类: [7Oe3=
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java代码: %7+qnH*;r
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package com.javaeye.common.util; _q-*7hCQ`
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import java.util.List; !+v$)3u9
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publicclass PaginationSupport { SwMc
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publicfinalstaticint PAGESIZE = 30; fNFY$:4X
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privateint pageSize = PAGESIZE; C~/a-
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privateList items; aPL+=5 8r
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privateint totalCount; Q*Pq{]0K
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privateint[] indexes = newint[0]; cbTm'}R(G
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privateint startIndex = 0; H4+i.*T#
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public PaginationSupport(List items, int PEZ!n.'S
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totalCount){ |yPu!pfl
setPageSize(PAGESIZE); I; rGD^
setTotalCount(totalCount); xJ.M;SF4
setItems(items); Z7Hbj!d/Sz
setStartIndex(0); 0o&5]lEe
} ]D\D~!R
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public PaginationSupport(List items, int >XfbP]
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totalCount, int startIndex){ u>vL/nI
setPageSize(PAGESIZE); X^j fuA
setTotalCount(totalCount); Xsa].
setItems(items); cw
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setStartIndex(startIndex); 3=oDQ&UFt
} dSHDWu&
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public PaginationSupport(List items, int TB31-
()
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totalCount, int pageSize, int startIndex){ u=e{]Ax#}
setPageSize(pageSize); N8df8=.kw
setTotalCount(totalCount); "3J}b?u_[
setItems(items); _|`S3}q|d
setStartIndex(startIndex); wUJcmM;
} G' 1'/
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publicList getItems(){ ^S; -fYW2
return items; 2GG2jky{/
}
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publicvoid setItems(List items){ !dq.KwL
this.items = items; w,D+j74e$
} "#g}ve,
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publicint getPageSize(){ <F'\lA9
return pageSize; P.DK0VgY
} #AY&BWS$
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publicvoid setPageSize(int pageSize){ !5!<C,U
this.pageSize = pageSize; {{!-Gr
} ~"A0Rs=
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publicint getTotalCount(){ s5.CFA
return totalCount; 1xvu<|F
} 6!bsM"F
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publicvoid setTotalCount(int totalCount){ [nh>vqum
if(totalCount > 0){ kq-) ^,{y
this.totalCount = totalCount; o2ECG`^b
int count = totalCount / B33\?Yj)
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pageSize; #\ErY3k 6&
if(totalCount % pageSize > 0) @2#lI
count++; yf,z$CR
indexes = newint[count]; ^B^9KEjTz
for(int i = 0; i < count; i++){ }6ldjCT/,
indexes = pageSize * mR)wX 6
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} *n!J=yS
}else{ NxILRKwO
this.totalCount = 0; 0"SU_jQzv
} Iga024KR
} w32y3~
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publicint[] getIndexes(){ fN2lLn9/u
return indexes; y1#1Ne_
} -:rUw$3J
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publicvoid setIndexes(int[] indexes){ T
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this.indexes = indexes; :23P!^Y
} !5N.B|Nt
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publicint getStartIndex(){ xyxy`qR A
return startIndex; @(lh%@hO
} l+b~KU7~l
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publicvoid setStartIndex(int startIndex){ E" vS $
if(totalCount <= 0) 2KZneS`
this.startIndex = 0; ;F Eqe49
elseif(startIndex >= totalCount) %l%HHT
this.startIndex = indexes K)P%;X
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[indexes.length - 1]; SS2%qv
elseif(startIndex < 0) 3(UVg!t
this.startIndex = 0; V VCZ9MVJ
else{ uw8f ~:LT
this.startIndex = indexes !`r$"}g
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[startIndex / pageSize]; ]_$[8#kg
} 5IG-~jzCLb
} (V@HR9?W)
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publicint getNextIndex(){ Z30A{6}
int nextIndex = getStartIndex() + `0R./|bv\I
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pageSize; w2J<WC+_<
if(nextIndex >= totalCount) 6w7 7YTJ
return getStartIndex(); %jM,W}2
else 3$JoDL(Z
return nextIndex; @%SQFu@FJ
} ~QVH<`sn
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publicint getPreviousIndex(){ z?//rXuO
int previousIndex = getStartIndex() - jj>]9z
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pageSize; g\AY|;T
if(previousIndex < 0) M3Kfd
return0; b`_Q8 J
else B7%U_F|m
return previousIndex; FgO)DQm
} _vZOZKS+
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} [00m/fT6
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抽象业务类 nj4/#W
java代码: dqAw5[qMJ
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/** tMe ~vq[
* Created on 2005-7-12 QS j]ZA
*/ xezcAwW
package com.javaeye.common.business; %>s|j'{
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import java.io.Serializable; h7@6T+#WoT
import java.util.List; g
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import org.hibernate.Criteria; I2DpRMy
import org.hibernate.HibernateException; !o-@&q
import org.hibernate.Session; YbLW/E\T
import org.hibernate.criterion.DetachedCriteria; $ulOp;~A%
import org.hibernate.criterion.Projections; L=h'Qgk%
import .sA.C]f
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org.springframework.orm.hibernate3.HibernateCallback; hzC>~Ub5
import PRT +mT
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org.springframework.orm.hibernate3.support.HibernateDaoS t:c.LFrF
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upport; mcok/,/
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import com.javaeye.common.util.PaginationSupport; lRdChoL$2
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public abstract class AbstractManager extends $]8Q(/mbK
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HibernateDaoSupport { 6@Y|"b
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privateboolean cacheQueries = false; 3N:D6w-R
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privateString queryCacheRegion; h.fq,em+H
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publicvoid setCacheQueries(boolean lys#G:H]
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cacheQueries){ BluVmM3Vj
this.cacheQueries = cacheQueries; 9{uO1O\
} E!AE4B1bd
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publicvoid setQueryCacheRegion(String 8i,K~Bu=
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queryCacheRegion){ '3H_wd
this.queryCacheRegion = [8*)8jP3
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queryCacheRegion; vcd\GN*4f
} {BHO/q3
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publicvoid save(finalObject entity){ PxE3K-S)G
getHibernateTemplate().save(entity); Lh<).<S
} [1KuzCcK}
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publicvoid persist(finalObject entity){ PYzvCf`?
getHibernateTemplate().save(entity); {}x^ri~
} ]+$?u&0?w
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publicvoid update(finalObject entity){ bJ;'`sw1
getHibernateTemplate().update(entity); =I~mKn
} *\q
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publicvoid delete(finalObject entity){ 'P}0FktP`
getHibernateTemplate().delete(entity); (4EI-e*6
} 8sCv]|cn
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publicObject load(finalClass entity, ]0\MmAJRn
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finalSerializable id){ cs'{5!i]
return getHibernateTemplate().load gzg_>2Sj
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(entity, id); rXU\
} DFTyMB1H
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publicObject get(finalClass entity, <