Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 .YT&V
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 <Kq4thR
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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 ZMI!Sl
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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 KqE5{ q
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分页支持类: OjUZ-_J
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java代码: '4L0=G:A<q
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package com.javaeye.common.util; |?tUUT!`t
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import java.util.List; '}Tf9L%
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publicclass PaginationSupport { $Eo)i
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publicfinalstaticint PAGESIZE = 30; <ah!!
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privateint pageSize = PAGESIZE; \R6D'Yt
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privateList items; R43yr+p
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privateint totalCount; aQzu[N
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privateint[] indexes = newint[0]; *gJ:irah
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privateint startIndex = 0; \KGi54&Y
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public PaginationSupport(List items, int 3Pj 6(cf
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totalCount){ u Z(vf
setPageSize(PAGESIZE); r fl-(_3
setTotalCount(totalCount); /O@dqEbc
setItems(items); 6eUM[C.
setStartIndex(0); {GTOHJ2
} E>bK-jG
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public PaginationSupport(List items, int r&u&$"c
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totalCount, int startIndex){ !c;Z<@
setPageSize(PAGESIZE); #LGAvFA*_F
setTotalCount(totalCount); ~w&_l57
setItems(items); D9cpw0{nc
setStartIndex(startIndex); .+;;-]})
} .%.bIT
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public PaginationSupport(List items, int GkhaB(btk'
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totalCount, int pageSize, int startIndex){ jJ}3WJ
setPageSize(pageSize); rW.o_z03^
setTotalCount(totalCount); :{(` ;fJ
setItems(items); +zU[rhMk'
setStartIndex(startIndex); 0gI^GJN%Y!
} Z'vic#
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publicList getItems(){ QO0#p1fom'
return items;
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publicvoid setItems(List items){ IQ${2Dpg[
this.items = items; Znv3h
} xJQ-k/`
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publicint getPageSize(){ o@&Hc bN^
return pageSize; 69z,_p$@:
} w?r
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publicvoid setPageSize(int pageSize){ &!@7+'])
this.pageSize = pageSize; J6WyFtlyLc
} ~^<ju6O'
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publicint getTotalCount(){ B4hT(;k
return totalCount; b3>`%?A
} |f:1Br
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publicvoid setTotalCount(int totalCount){ hSg4A=y
if(totalCount > 0){ "sM
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this.totalCount = totalCount; R-L*N$@!
int count = totalCount / CJ@G8>
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pageSize; =B+^-2G8
if(totalCount % pageSize > 0) F%Xj'=
count++; -<Wv7FNpD
indexes = newint[count]; Y-0o>:SM
for(int i = 0; i < count; i++){ ]vFtByqn
indexes = pageSize * &jg..R
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i; 'b?Px}
}
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}else{ wM]j#
this.totalCount = 0; 0R#T 3K}
} I;Sg9`k=
} pb\W7G
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publicint[] getIndexes(){ &Z.zem?n
return indexes; l8$7N=Y
} bv%A;
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publicvoid setIndexes(int[] indexes){ CDNh9`
this.indexes = indexes; "_g3{[es!
} UBgheu
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publicint getStartIndex(){ $aY*1UVq
return startIndex; &
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} +d$l1j
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publicvoid setStartIndex(int startIndex){ K&\3j-8^
if(totalCount <= 0) =b{!p |
this.startIndex = 0; W=[..d
elseif(startIndex >= totalCount) /C'dW
this.startIndex = indexes e>OYJd0s
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[indexes.length - 1]; g9rsw7
elseif(startIndex < 0) Po~u-5
this.startIndex = 0; &!adW@y
else{ ;;*'<\lP.j
this.startIndex = indexes Q>G lA
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[startIndex / pageSize]; ~O;'],#Co
} f&n6;N
} UC u4S >
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publicint getNextIndex(){ ",qcqG(
int nextIndex = getStartIndex() + b8>2Y'X
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pageSize; !6yyX}%o
if(nextIndex >= totalCount) 'ot,6@~x>
return getStartIndex(); ~ sC< V
else viLK\>>
return nextIndex; Ot^<:\<`G
} NV[_XXTv7
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publicint getPreviousIndex(){ U&(TqRi,
int previousIndex = getStartIndex() - uTX0lu;
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pageSize; GC<zL}
if(previousIndex < 0) FtEmSKD
return0; `:4\RcTb/
else [i
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return previousIndex; Q9\6Pn ]T
} ,.g9HO/R1
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} #VLO6
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抽象业务类 B!z-O*fLE1
java代码: )=PmHUd
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/** pYtvenBy
* Created on 2005-7-12 -9L[eYn
*/ /IkSgKJiz\
package com.javaeye.common.business; %. zcE@7*
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