Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 dn42'(p@G
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 (<OmYnm
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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 I-J%yutB
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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 M,{; xf
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分页支持类: P$ b5o
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java代码: W S9:*YH
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package com.javaeye.common.util; ~_ovQ4@
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import java.util.List; yVPFH~1@\
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publicclass PaginationSupport { %%wngiz\
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publicfinalstaticint PAGESIZE = 30; ecvZwL
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privateint pageSize = PAGESIZE; ,gkWksl9
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privateList items; <A\g*ld
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privateint totalCount; >:
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privateint[] indexes = newint[0]; [P)](8nR[
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privateint startIndex = 0; ^ 6t"A
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public PaginationSupport(List items, int 8|hi2Qeu,c
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totalCount){ &s\,+d0
setPageSize(PAGESIZE); ^b.fci{1m
setTotalCount(totalCount); D[YdPg@-
setItems(items); 9(Kff nE^
setStartIndex(0); iN@|08
} 7
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public PaginationSupport(List items, int $'a]lR
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totalCount, int startIndex){ FklO#+<:
setPageSize(PAGESIZE); h{)`W
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setTotalCount(totalCount); n2F*a
setItems(items); &(x>J:b
setStartIndex(startIndex); sJg3WN
} TQ {8 ee{
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public PaginationSupport(List items, int 4 T/ ~erc
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totalCount, int pageSize, int startIndex){ Au )%w
setPageSize(pageSize); @$!"}xDR'
setTotalCount(totalCount); 9*?YES'6
setItems(items); c8cGIAOY)
setStartIndex(startIndex); Mw;^`ZxT
} (i@(ZG]/
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publicList getItems(){ Hu!<GB~
return items; B=%YD"FAv
} Q6[h;lzGV
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publicvoid setItems(List items){ Z>'hNj)ju
this.items = items; MB.LHIo
} MY&?*pV)
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publicint getPageSize(){ iW?NxP
return pageSize; ,#.^2O9-^
} 3ZYrNul"
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publicvoid setPageSize(int pageSize){ `zcpaE.@
this.pageSize = pageSize; :\1vy5 _
} 34vH+,!u
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publicint getTotalCount(){ yv5c0G.D
return totalCount; {JcMJZ3
} 2|+4xqNJm
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publicvoid setTotalCount(int totalCount){ 3SOrM
if(totalCount > 0){ .noY[P8i
this.totalCount = totalCount; )q%DRLD'G
int count = totalCount / @hOY&
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pageSize; j0e1CSE
if(totalCount % pageSize > 0) 6rAenK-%
count++; xkz`is77Y@
indexes = newint[count]; q +c~Bd
for(int i = 0; i < count; i++){ Fw"x4w
indexes = pageSize * `+WQ^dP@
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} !=+hU/e
}else{ YW-Ge
this.totalCount = 0; `&A-m8X
} E>}3MfL
} EPeV1$
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publicint[] getIndexes(){ )$FwB6^
return indexes; gO!:WD
} ^eqq|(<K
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publicvoid setIndexes(int[] indexes){ fAeq(tI=
this.indexes = indexes; 5CM]-qbf@
} t*!Q9GC_
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publicint getStartIndex(){ }Q>??~mVl
return startIndex; 3ry0.
} [UaM}-eR
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publicvoid setStartIndex(int startIndex){ mINir-
if(totalCount <= 0) =)XC"kUp
this.startIndex = 0; :U#4H;kk~j
elseif(startIndex >= totalCount) 0o&7l%Y/
this.startIndex = indexes pd}af iF
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[indexes.length - 1]; +t;j5\HS
elseif(startIndex < 0) lV<j?I~?Q
this.startIndex = 0; R&s\h"=*
else{ I!,FxOM|$
this.startIndex = indexes ob>2SU[Y
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[startIndex / pageSize]; >PiEu->P,
} q \\52:\
} H9T'{R*FC
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publicint getNextIndex(){ 'd=B{7k@
int nextIndex = getStartIndex() + &r!*Y&
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pageSize; mE_?E&T`|
if(nextIndex >= totalCount) rM(2RI4O`0
return getStartIndex(); -*C+z!?BP
else d+Jj4OnP
return nextIndex; /=ro$@
} :+\B|*T2.L
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publicint getPreviousIndex(){ "EC,#$e%ev
int previousIndex = getStartIndex() - rQPV@J]:
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pageSize; F:rT.n
if(previousIndex < 0) c4n]#((%a
return0; >`c-Fqk
else Ucz`^}+
return previousIndex; [CJr8Qn
} 41jx+
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} p_2-(n@
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抽象业务类 ey>V^Fj
java代码: r@Tq-o
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/** Kr'5iFK7
* Created on 2005-7-12 $&iw (BIq
*/ %B'*eBj~fw
package com.javaeye.common.business; -5t.1/
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import java.io.Serializable; %JC-%TRWK
import java.util.List; 9.qjEe
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import org.hibernate.Criteria; vEIDf{
import org.hibernate.HibernateException; Fv"jKZPgzz
import org.hibernate.Session; wqLY
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import org.hibernate.criterion.DetachedCriteria; 'm,3znX!c
import org.hibernate.criterion.Projections; w{;esU
import nv^nq]4'Dq
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org.springframework.orm.hibernate3.HibernateCallback; k&PxhDf
import *^q%b/ f
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org.springframework.orm.hibernate3.support.HibernateDaoS +WYXj
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upport; (\<