Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 n!nv.-n
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 st>t~a|T
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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 *WG}K?"/
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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 $Tza<nA
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分页支持类: NM ]/OKs'H
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java代码: }z#8vE;
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package com.javaeye.common.util; +l\Dp
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import java.util.List; 3IIlAzne;
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publicclass PaginationSupport { ;d4_l:9p
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publicfinalstaticint PAGESIZE = 30; TEtZPGFl
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privateint pageSize = PAGESIZE; "]<Ut{Xb
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privateList items; #XZ?,neY
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privateint totalCount; "rtmDNpL
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privateint[] indexes = newint[0]; d
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privateint startIndex = 0; lq~n*uwO}t
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public PaginationSupport(List items, int 827N?pU$)
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totalCount){ J{Jxb1:c
setPageSize(PAGESIZE); e=U7w7(s9
setTotalCount(totalCount); \)bwdNWI
setItems(items); B!Y;VdX
setStartIndex(0); DIY WFVh
} oKUJB.PF
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public PaginationSupport(List items, int No?pv"
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totalCount, int startIndex){ :\ S3[(FV
setPageSize(PAGESIZE); y(HR1vQ;Z
setTotalCount(totalCount); <H.Ml>q:r
setItems(items); 6gv.n
setStartIndex(startIndex); : v]< h
} IzG7!K
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public PaginationSupport(List items, int B,676~I
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totalCount, int pageSize, int startIndex){ yuND0,e
setPageSize(pageSize); bAgKOfT
setTotalCount(totalCount); D,2,4h!ka
setItems(items); Fw|5A"9'a'
setStartIndex(startIndex);
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} h'
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publicList getItems(){ 7%X$6N-X
return items; Vry#
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publicvoid setItems(List items){ PS>k67sI
this.items = items; &.d~
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} _rSnp
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publicint getPageSize(){ jv W/M.q4
return pageSize; sx6`
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} X/?3ifP6I
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publicvoid setPageSize(int pageSize){ Q?vGg{>
this.pageSize = pageSize; gbF.Q7?$u
} }lhJt|q c
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publicint getTotalCount(){ hF6EOCY6D
return totalCount; JTx&_Ok#
} ^58'*13ZL
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publicvoid setTotalCount(int totalCount){ % nJ'r?+h
if(totalCount > 0){ fuQ?@F
this.totalCount = totalCount; N~SG=\rP;o
int count = totalCount / ^}9Aq $R
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pageSize; JI(8{ f
if(totalCount % pageSize > 0) F`f#gpQ
count++; Uc\\..Cf
indexes = newint[count]; yt$V<8a
for(int i = 0; i < count; i++){ Kx ';mgG#$
indexes = pageSize * W*gu*H^s~
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} H=EvT'g
}else{ 4u A;--j
this.totalCount = 0; xj(&EGY:
} jPhOk>m
} ^BW V6
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publicint[] getIndexes(){ !\^c9Pg|v
return indexes; q
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} pz~AsF
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publicvoid setIndexes(int[] indexes){ ^2XoYgv
this.indexes = indexes; [[ HXOPaV
} buq3t+0
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publicint getStartIndex(){ Jy{A1i@4~s
return startIndex; 5Tkh6 s
} -7>vh|3
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publicvoid setStartIndex(int startIndex){ O]90F
if(totalCount <= 0) e%o6s+"
this.startIndex = 0; :^%My]>T
elseif(startIndex >= totalCount) c"v#d9
this.startIndex = indexes tNoo3&
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[indexes.length - 1]; 6(VCQ{
elseif(startIndex < 0) pu=Q;E_f[
this.startIndex = 0; l0 rZril
else{ A7 E*w
this.startIndex = indexes `fj(xrI
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[startIndex / pageSize]; IX,/ZOZ|
} *4dA(N\k"
} &S]\)&Yt
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publicint getNextIndex(){ Gmf.lHr$%
int nextIndex = getStartIndex() + @_YlHe&W
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pageSize; ]+{Cy\*kR
if(nextIndex >= totalCount) 3#j%F
return getStartIndex(); cL7je
else .yd{7Te
return nextIndex; Yy@;U]R
} GTyS8`5E*
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publicint getPreviousIndex(){ j]6Z*AxQ
int previousIndex = getStartIndex() - ?sfA/9"
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pageSize; 1>[3(o3t
if(previousIndex < 0) "@;q! B.qo
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else bW7tJ
return previousIndex; dw5.vXL`
} snK$? 9vh
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抽象业务类 Xp[[ xV|
java代码: ; =ai]AYW
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/** iW(HOsA
* Created on 2005-7-12 Og4 X3QG
*/ @Kd1|K
package com.javaeye.common.business; 'ejuzE9
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import java.io.Serializable; /pan{.< k
import java.util.List; Kn SXygT
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import org.hibernate.Criteria; bHH{bv~Z
import org.hibernate.HibernateException; BC ]^BKP
import org.hibernate.Session; %<6oKE
import org.hibernate.criterion.DetachedCriteria; p+SFeUp
import org.hibernate.criterion.Projections; &PI}o
import @vh3S+=M
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org.springframework.orm.hibernate3.HibernateCallback; eS8tsI
import Q^$IlzG7i
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org.springframework.orm.hibernate3.support.HibernateDaoS w|pk1~c(_
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upport; 2+M(!FHfy
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import com.javaeye.common.util.PaginationSupport; O+%Y1=S[WQ
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public abstract class AbstractManager extends ](a*R
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HibernateDaoSupport { j*t>CB4
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privateboolean cacheQueries = false; `e .;P
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privateString queryCacheRegion; {>tgNW>)
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publicvoid setCacheQueries(boolean fIN8::Cs[
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cacheQueries){ 7m_Jb5
this.cacheQueries = cacheQueries; U~-Z`_@^-
} 5|f[evQj<S
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publicvoid setQueryCacheRegion(String wvvMesX<L
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queryCacheRegion){ u4bPj2N8I
this.queryCacheRegion = v^2K=f[nE
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queryCacheRegion; RKFj6u
} 8.HqQ:?&2t
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publicvoid save(finalObject entity){ \g< M\3f
getHibernateTemplate().save(entity); &MsnQP
} ]S9~2;2^,
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publicvoid persist(finalObject entity){ %>`0hk88
getHibernateTemplate().save(entity); eyBLgJt8P
} W=41jw
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publicvoid update(finalObject entity){ |K| c
getHibernateTemplate().update(entity); fQRGz\r*k
} = zW}vm }
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publicvoid delete(finalObject entity){ ,!_$A}@0
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getHibernateTemplate().delete(entity); fw kX-ON
} "f/lm 2<
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publicObject load(finalClass entity, bDVz+*bU}
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finalSerializable id){ NBZFIFO<
return getHibernateTemplate().load ?ORG<11a
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(entity, id); q|BR-0yi
} .)~IoIW=
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publicObject get(finalClass entity, {j O:9O@
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