Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 mw%[qeLV
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ;Ln7_
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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 {jCu9 ]c!
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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
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分页支持类: Z"PDOwj5
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java代码: .LhbhUEfn
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package com.javaeye.common.util; d(dw]6I6
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import java.util.List; @[Jt~v
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publicclass PaginationSupport { 4YB7og%P
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publicfinalstaticint PAGESIZE = 30; S]e~)IgO
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privateint pageSize = PAGESIZE; Rqd %#v
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privateList items; a5Acqa
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privateint totalCount; eUUD|U*b
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privateint[] indexes = newint[0]; { <ao4w6B
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privateint startIndex = 0; *<h
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public PaginationSupport(List items, int N!4xP.Ps
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totalCount){ SS<+fWXE
setPageSize(PAGESIZE); PY3Vu]zD
setTotalCount(totalCount); \c@qtIc
setItems(items); cq+M
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setStartIndex(0); sD8xH
} sou$qKoG01
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public PaginationSupport(List items, int \Lh<E5@]
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totalCount, int startIndex){ Rcm(Y7
setPageSize(PAGESIZE); h-v&I>
setTotalCount(totalCount); |jCE9Ve#
setItems(items); ![."xHVeL
setStartIndex(startIndex); ]FnrbQ|
} ,uD*FSp>
} k%\
public PaginationSupport(List items, int v!v0,?b*
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totalCount, int pageSize, int startIndex){ @_weMz8}
setPageSize(pageSize); S.)8&
setTotalCount(totalCount); -QNMB4
setItems(items); c75vAKZ2
setStartIndex(startIndex); 3YNkT"~T
} Y.hH
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publicList getItems(){ /;(%Xd&:
return items; zR/p}Wu|!
} MZ+IorZl
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publicvoid setItems(List items){ bz,cfc;?$
this.items = items; m^s2kB4A[
} #5"<.z
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publicint getPageSize(){ f"=4,
return pageSize; b42pLbpe'E
} <OO/Tn'a
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publicvoid setPageSize(int pageSize){ QbKYB
this.pageSize = pageSize; rp[oH=&
} UDi3dH=
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publicint getTotalCount(){ m$UT4,Ol
return totalCount; Q Fqv,B\<
} %TggNU,
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publicvoid setTotalCount(int totalCount){ ";Xbr;N
if(totalCount > 0){ ?b' '
this.totalCount = totalCount; 7VZ JGRnn
int count = totalCount / u0H`%m
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pageSize; T_B.p*\BM
if(totalCount % pageSize > 0) l8d%hQVqT
count++; 7G=P|T\
indexes = newint[count]; Da[X
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for(int i = 0; i < count; i++){ L$kAe1 V^m
indexes = pageSize * <!nWiwv
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} 8'\,&f`Y
}else{ e/#&5ISk
this.totalCount = 0; ?GfA;O
} XI(@O)
} h
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publicint[] getIndexes(){ *A9{H>Vq
return indexes; +Y^F>/ 4=Y
} #CP, \G
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publicvoid setIndexes(int[] indexes){ 3\.)y49,1
this.indexes = indexes; fQA)r
} i/EiUH/~
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publicint getStartIndex(){ ?4?jG3p
return startIndex; Mz.&d:
} fJlN'F7
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publicvoid setStartIndex(int startIndex){ &!~n=]*sz
if(totalCount <= 0) `.-k%2?/
this.startIndex = 0; m@2xC,@
elseif(startIndex >= totalCount) Bw7:ry
this.startIndex = indexes %((3'le
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[indexes.length - 1]; F"P:9`/
elseif(startIndex < 0) '\YhRU
this.startIndex = 0; TUn@b11
else{ %}5"5\Zz
this.startIndex = indexes $^aXVy5p
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[startIndex / pageSize]; &rWJg6/
} EUS]Se2
} Y9ce"*b
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publicint getNextIndex(){ Kd1\D!#!6
int nextIndex = getStartIndex() + X}FF4jE]D(
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pageSize; uM<+2S
if(nextIndex >= totalCount) jCv+m7Z
return getStartIndex(); VQx-gm8}!
else _1%^ibn
return nextIndex; R~(.uV`#j
} Ym2m1
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publicint getPreviousIndex(){ g%P4$|C9i
int previousIndex = getStartIndex() - Vta;ibdeqW
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pageSize; df rr.i
if(previousIndex < 0) 3AL=*qq
return0; Q>*K/%KD
else mpAh'f4$*
return previousIndex; LMzYsXG*[
} !K)|e4$
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} g<c^\WG
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抽象业务类 1vd+p!n
java代码: 78#ud15Ml
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/** qz2d'OhmtH
* Created on 2005-7-12 7U0):11X#
*/ V1qHl5"
package com.javaeye.common.business; <v^.FxId
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import java.io.Serializable; #Og_q$})f
import java.util.List; hlEvL
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import org.hibernate.Criteria; 86Vu PV-
import org.hibernate.HibernateException; B
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import org.hibernate.Session; o#b9M4O
import org.hibernate.criterion.DetachedCriteria; y
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import org.hibernate.criterion.Projections; \bE~iz3b9
import svgi!=
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org.springframework.orm.hibernate3.HibernateCallback; jGPs!64f)
import nTlrG6
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org.springframework.orm.hibernate3.support.HibernateDaoS A
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upport; [%q":Ig
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