Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 _ MsO2A
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 GGM|B}U p
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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 _sp,,gz
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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 ]|JQH
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分页支持类: lF[m*}l
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java代码: $&25hvK,
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package com.javaeye.common.util; <mrvuWg0
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import java.util.List; \T'.b93~B
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publicclass PaginationSupport { r|MBkpcvp
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publicfinalstaticint PAGESIZE = 30; -R]Iu\
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privateint pageSize = PAGESIZE;
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privateList items; 'c&[ kMR
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privateint totalCount; pD@:]VP
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privateint[] indexes = newint[0]; 58S qB
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privateint startIndex = 0; 1+F0$<e}
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public PaginationSupport(List items, int (jyT9'*wAT
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totalCount){ (U{,D1?
setPageSize(PAGESIZE); Z5j\ M
setTotalCount(totalCount); @Ojbu@A
setItems(items); t !8(I R
setStartIndex(0); UF&B7r
} m
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public PaginationSupport(List items, int '^n,)oA/G
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totalCount, int startIndex){ I[6ft_*
setPageSize(PAGESIZE); w4Uo-zr@
setTotalCount(totalCount); #0"Pd8@
setItems(items); HJi
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setStartIndex(startIndex); \N%L-%^
} lt{D f~c
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public PaginationSupport(List items, int
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totalCount, int pageSize, int startIndex){ 'uW&ADp
setPageSize(pageSize); j].=,M<dxE
setTotalCount(totalCount); LE|DMz|J
setItems(items); WK.K-bd
setStartIndex(startIndex); */APe#
} Ueu~803~
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publicList getItems(){ 3Q#Tut
return items; h+c9FN
} i*]$_\yl"
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publicvoid setItems(List items){ XxY wBc'pc
this.items = items; hAV@/oQ
} \>\_OfY1W
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publicint getPageSize(){ cGSG}m@B`
return pageSize; :caXQ)
} ri2`M\;gt
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publicvoid setPageSize(int pageSize){ [k]3#<sS
this.pageSize = pageSize; czLY+I;V3
} 2M>`W5
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publicint getTotalCount(){ NI:3hfs
return totalCount; YO9ofT
} OJ1MV 7&
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publicvoid setTotalCount(int totalCount){ V2SHF
if(totalCount > 0){ M+VAol}1
this.totalCount = totalCount; :'4",
int count = totalCount / vd[?73:C
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pageSize; V/+D]
if(totalCount % pageSize > 0) sd _DG8V
count++; 7.*Mmx~]=
indexes = newint[count]; j a4zLf(<
for(int i = 0; i < count; i++){ Y6`^E
indexes = pageSize * 1d!TU=*
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} ^&lkh@Y1q
}else{ [;Jq=G8&t
this.totalCount = 0; pE {yVs
} 3ESrd"W=
} b(Yxsy{U
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publicint[] getIndexes(){ -Rwx`=6tV
return indexes; Ae;mU[MK/
} #]h&GX
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publicvoid setIndexes(int[] indexes){ -br): }f
this.indexes = indexes; e!ql8wbp
} LvCX(yjZ*
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publicint getStartIndex(){ P
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return startIndex; ]2c0?f*Y7
} AqT}^fS
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publicvoid setStartIndex(int startIndex){ XG E.*aI
if(totalCount <= 0) :W9a t
this.startIndex = 0; O Cnra
elseif(startIndex >= totalCount) 9/=+2SZ
this.startIndex = indexes i}O.,iH
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[indexes.length - 1]; G0h e'BR
elseif(startIndex < 0) ^vJy<
this.startIndex = 0; A: O"N
else{ @V Sr'?7-
this.startIndex = indexes Fd#Zu.Np
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[startIndex / pageSize]; "H]R\xp
} mRy0zN>?
} v\+`n^=
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publicint getNextIndex(){ Y(Y#H$w
int nextIndex = getStartIndex() + ]QQeUxi
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pageSize; q7pe\~q
if(nextIndex >= totalCount) M[C)b\
return getStartIndex(); <b?$-Rx
else x->+wJm@s
return nextIndex; T_d)1m fl
} }/4),W@<
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publicint getPreviousIndex(){ Z^J7r&\V
int previousIndex = getStartIndex() - ?KWo1
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pageSize; iqFC~].)
if(previousIndex < 0) KV! (
return0; Q\}Ck+d`a
else W^pf 1I8[
return previousIndex; n7|,b-
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} VI-6t"l
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} qCB{dp/
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抽象业务类 K'y|_XsBB)
java代码: fX2OH)6U
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/** %/d1x
* Created on 2005-7-12 s{*bFA Z1F
*/ viJP6fh
package com.javaeye.common.business; i.^:xZ
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import java.io.Serializable; EMDYeXpV
import java.util.List; K)^8 :nt
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