Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 `)=A!x y
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 YNC0Z'c9
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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 O/Mz?$8J
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 AO}i@YJth
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分页支持类: Ukx/jNyYv
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java代码: /;<e.
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package com.javaeye.common.util; l|vWeBs
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import java.util.List; /=muj9|+s
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publicclass PaginationSupport { Q"OV>kl k
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publicfinalstaticint PAGESIZE = 30; EtR@sJ<
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privateint pageSize = PAGESIZE; XWUvP
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privateList items; GP{$v:RG
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privateint totalCount; R0Ax$Cv{
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privateint[] indexes = newint[0]; ZL-uwI!`D
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privateint startIndex = 0; ?AV&@EX2C
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public PaginationSupport(List items, int y:g7'+c
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totalCount){ 'a;ini
setPageSize(PAGESIZE); zG-_!FIn
setTotalCount(totalCount); a%7"_{s1
setItems(items); ;[{:'^n
setStartIndex(0); =bs.2aN&^
} pu/m8
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public PaginationSupport(List items, int nB cp7e
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totalCount, int startIndex){ LPEjRG,
setPageSize(PAGESIZE); ./ "mn3U
setTotalCount(totalCount); !lR0w|
setItems(items); KI Ek/]<H
setStartIndex(startIndex); \We"?1^
} $.oOG"u0]
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public PaginationSupport(List items, int 3C277nx
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totalCount, int pageSize, int startIndex){ i Td-n9
setPageSize(pageSize); f!5F]qP>-
setTotalCount(totalCount); Y.DwtfE
setItems(items); 84iJ[Fq{
setStartIndex(startIndex); CdX`PQ
} %
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publicList getItems(){ WI,40&<
return items; y7CWBTH0>
} &(gm4bTg
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publicvoid setItems(List items){ ?sV[MsOsC
this.items = items; Oc7 >S.1
} 2*+3RrJ
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publicint getPageSize(){ Q`N18I3
return pageSize; !]yQ1@)*'
} ?p(kh^ z
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publicvoid setPageSize(int pageSize){ 8GY.){d!l
this.pageSize = pageSize; l$M$o(
} 3Q",9(D
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publicint getTotalCount(){ +Z > <
return totalCount; 7k `_#
} m`'=)x|
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publicvoid setTotalCount(int totalCount){ %8
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if(totalCount > 0){ =Ci13< KQ
this.totalCount = totalCount; q?yMa9ZZky
int count = totalCount / Ee8--
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pageSize; Oo
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if(totalCount % pageSize > 0) 0rcjorWI
count++; xo(k?+P>.
indexes = newint[count]; dsK/6yu
for(int i = 0; i < count; i++){ ^T{8uJ'kn
indexes = pageSize * sYW[O"oNi
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} W<Z$YWr
}else{ QNb>rLj52
this.totalCount = 0; ge$LIsE8
} `dO}L
} iD<6t_8),
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publicint[] getIndexes(){ v
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return indexes; .uKx>YB}
} UW/N MjK
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publicvoid setIndexes(int[] indexes){ Pcdf$a"`
this.indexes = indexes; y
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} @zrNN>
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publicint getStartIndex(){ [f/.!@sj
return startIndex; .'/l'>
} +zsZNJ(U
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publicvoid setStartIndex(int startIndex){ Fu%X
if(totalCount <= 0) 7 2,"Cj
this.startIndex = 0; x'qWM/
elseif(startIndex >= totalCount) 13a(FG
this.startIndex = indexes Gs_qO)~xo
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[indexes.length - 1]; 2tf6GX:
elseif(startIndex < 0) Qn.[{rw
this.startIndex = 0; DjwQ`MA
else{ ]'k[u
this.startIndex = indexes _]=9#Fg7{
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[startIndex / pageSize]; eh<rRx"[
} *QH[,F`I
} +9[SVw8
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publicint getNextIndex(){ ~;unpym'
int nextIndex = getStartIndex() + 0^#DNq*NQ
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pageSize; 1,`H:%z%
if(nextIndex >= totalCount) ^VI,C|
return getStartIndex(); bRPO:lAy
else })[($$f/
return nextIndex; AmcC:5
} wqy^8N[K]
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publicint getPreviousIndex(){ =yqHC<8:
int previousIndex = getStartIndex() - Hm9<