Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 2["bS++?
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 l<! ?`V6}
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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 &mp=j GR
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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 =P-kb^ s
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分页支持类: 2LEf"FH0~
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java代码: rp{q.fy'U
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package com.javaeye.common.util; ][I}yOD70
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import java.util.List; d [6[3B
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publicclass PaginationSupport { pmv;M`_|R
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publicfinalstaticint PAGESIZE = 30; z ~#
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privateint pageSize = PAGESIZE; PB(mUD2"r
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privateList items; 8rx?mX,}
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privateint totalCount; 2I3MV:5
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privateint[] indexes = newint[0]; &$:1rA_v
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privateint startIndex = 0; I'Ui` :A
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public PaginationSupport(List items, int >;-.rJFr
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totalCount){ ?suxoP%
setPageSize(PAGESIZE); /5b,&
setTotalCount(totalCount); Y(h86>z*w
setItems(items); p~J|l$%0rQ
setStartIndex(0); lZCTthr\
} R7+3$F5B
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public PaginationSupport(List items, int 7_xQa$U[
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totalCount, int startIndex){ V^sZXdDNL
setPageSize(PAGESIZE); e`27 ?
setTotalCount(totalCount); qb'4x){
setItems(items); h mC.5mY
setStartIndex(startIndex); C2OBgM+
} %{?EfULg
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public PaginationSupport(List items, int <$7HX/P
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totalCount, int pageSize, int startIndex){ ve|ig]$5g<
setPageSize(pageSize); `!V=~"ve
setTotalCount(totalCount); J$Uj@M
setItems(items); mwU|Hh)N]
setStartIndex(startIndex); !6{; z/Hy
} Gi]R8?M
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publicList getItems(){ *DfwTbg|
return items; E}LYO:
} 4HG;v|Cp
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publicvoid setItems(List items){ #X1iig+
this.items = items; 9f1,E98w_
} .K%1{`.|
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publicint getPageSize(){ >|Yr14?7
return pageSize; y:,Ro@H%
} oMey^]!
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publicvoid setPageSize(int pageSize){ ;:nx6wi
this.pageSize = pageSize; O1]L4V1iH
} 1X.E:
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publicint getTotalCount(){ k;BXt:jDq
return totalCount; Z'=:Bo{
} PggjuPPh
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publicvoid setTotalCount(int totalCount){ "Bn8WT2?
if(totalCount > 0){ CNU,\>J@$
this.totalCount = totalCount; mcO/V-\5'
int count = totalCount / UaA1HZ1
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pageSize; X$mCn#8m
if(totalCount % pageSize > 0) QAN :
count++; `_"F7Czn
indexes = newint[count]; . l1uqCuB
for(int i = 0; i < count; i++){ "L ,)4v/J
indexes = pageSize * AIN Fv;
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} e"g=A=S
}else{ B L^?1x
this.totalCount = 0; 'LC-/_g
} 0o-.m
} 0i|z$QRL~
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publicint[] getIndexes(){ ZH<:g6
return indexes; A?)nLp&Y
} kz=Ql|@
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publicvoid setIndexes(int[] indexes){ $F&m('aB8
this.indexes = indexes; >`{B
} 4 q-/R
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publicint getStartIndex(){ kz30! L
return startIndex; ' v)@K0P
} L[s7q0 F`l
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publicvoid setStartIndex(int startIndex){ r~2>_LK
if(totalCount <= 0) 'aV/\a:*
this.startIndex = 0; NQ&\t[R[
elseif(startIndex >= totalCount) r.z=
this.startIndex = indexes GycW3tc]_&
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[indexes.length - 1]; ^mp#7OL
elseif(startIndex < 0) 9I1D'7wI^^
this.startIndex = 0; Q{K'#
else{ O%m\
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this.startIndex = indexes "39\@Ow
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[startIndex / pageSize]; a%g |E'\Jw
} G>@KX
} ;URvZ! {/Z
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publicint getNextIndex(){ sV']p#HK0
int nextIndex = getStartIndex() + (8Ptuh6\\2
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pageSize; mG\$W#+j
if(nextIndex >= totalCount) Py72:;wn
return getStartIndex(); -|.Izgc
else n5qg6(Tl]
return nextIndex; XK+"
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} Vd&&GI(:?^
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publicint getPreviousIndex(){ WPu-P
int previousIndex = getStartIndex() - yw@kh^L
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pageSize; aTWCX${~b
if(previousIndex < 0) w!kWG,{C
return0; x9!3i{_
else {r>iUgg
return previousIndex; j0wpaIp
} T%Nm
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} d YliC
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抽象业务类 jL6ZHEi#d7
java代码: 7{JIHY+
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/** t@vVE{`
* Created on 2005-7-12 ]I^b&N
*/ I%<