Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 l"+8>Mm
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 U$OI]Dd9
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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 {K"hlu[
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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 f@hM ^%
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分页支持类: q1eMK'1
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java代码: &)+H''JY
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package com.javaeye.common.util; 1,)
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import java.util.List; ^<-r57pz
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publicclass PaginationSupport { R{bG`C8.d
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publicfinalstaticint PAGESIZE = 30; &V~l(1
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privateint pageSize = PAGESIZE; \$.{*f
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privateList items; N%Ta.`r
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privateint totalCount; u<cnz%@
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privateint[] indexes = newint[0]; [(3s5)O
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privateint startIndex = 0; {]}94T~/k
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public PaginationSupport(List items, int $57b.+2n
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totalCount){ eZU9L/w:
setPageSize(PAGESIZE); -j]k^
setTotalCount(totalCount); jMTM:~0N
setItems(items); /N_:npbJF
setStartIndex(0); LOi}\O8
} wxc#)W
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public PaginationSupport(List items, int wz69Yw7
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totalCount, int startIndex){ 54z.@BJhE
setPageSize(PAGESIZE); J@$~q}iG
setTotalCount(totalCount); !*"fWahv
setItems(items); aif;h!
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setStartIndex(startIndex); /A-WI x
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public PaginationSupport(List items, int Pb8@owG8
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totalCount, int pageSize, int startIndex){ 1]~w?)..'
setPageSize(pageSize); p+V#86(3
setTotalCount(totalCount); %2zmc%]r
setItems(items); NvJ5[W
setStartIndex(startIndex); 9)'f)60^
} qJdlZW<
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publicList getItems(){ A/'po_'uy
return items; ]1<GZ`
} 9/(jY$Ar
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publicvoid setItems(List items){ h5@GeYda
this.items = items; gd*Gn"
} b@;Wh-{d
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publicint getPageSize(){ X^ Is-[OvE
return pageSize; V9v20iX
} `nl n@ ;
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publicvoid setPageSize(int pageSize){ I!S Eb
this.pageSize = pageSize; !>`Fg>uy
} JaRsm'SIk~
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publicint getTotalCount(){ R03 Te gwA
return totalCount; DaQl ip
} R);Hd1G
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publicvoid setTotalCount(int totalCount){ LjBIRV7
if(totalCount > 0){ be,Rj,-
this.totalCount = totalCount; 3J+2#ML
int count = totalCount /
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pageSize; ]h,rgO;
if(totalCount % pageSize > 0)
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count++; ccHf+=
indexes = newint[count]; \c:$eF
for(int i = 0; i < count; i++){ RPW46l34
indexes = pageSize * @m#OhERv
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} K] (*l"'U5
}else{ 1g{Pe`G,
this.totalCount = 0; C}RO'_Pq
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publicint[] getIndexes(){ g F*AS(9
return indexes; /D&&7;jJ
} hF,|()E[
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publicvoid setIndexes(int[] indexes){ #0P_\X`E
this.indexes = indexes; H;1@]|sH#
} P0n1I7|
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publicint getStartIndex(){ Wb-C0^dTn
return startIndex; pd|KIs%jl
} J ay"
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publicvoid setStartIndex(int startIndex){ "o&8\KSs
if(totalCount <= 0) cs+3&T:,*
this.startIndex = 0; eThaH0
elseif(startIndex >= totalCount) $eYL|?P50h
this.startIndex = indexes KC6Cg?y^
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[indexes.length - 1]; e7RgA1
elseif(startIndex < 0) K*>%,mP$i
this.startIndex = 0; VVas>/0qr
else{ 5qb93E"C
this.startIndex = indexes {]T?) !Vm
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[startIndex / pageSize]; 0<uek
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} y7,I10:D
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publicint getNextIndex(){ s<s}6|Z
int nextIndex = getStartIndex() + 8=`L#FkRp
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pageSize; k
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if(nextIndex >= totalCount)
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return getStartIndex(); "b} mVrFh
else 8s1nE_3
return nextIndex; vYed_'_
} !D#"+&&G8
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publicint getPreviousIndex(){ 7Y5 r3a}%
int previousIndex = getStartIndex() - [.gk{> #
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pageSize; v>8C}d^
if(previousIndex < 0) wFJf"@/vJ
return0; 7~Y\qJ4b
else MCKN.f%lP
return previousIndex; g#J`7n
} 'hpOpIsHa
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抽象业务类 J9Ao*IW~
java代码: \P<aK$g
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/** u<-)C)z
* Created on 2005-7-12 Z`Y&cK