Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 @HxEp;*NH"
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 y{,HpPp#o
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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 jA$g0>
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 ,aeQXI#@
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分页支持类: !jN}n)FSq
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java代码: 1 "?KQU
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package com.javaeye.common.util; U":hJ*F)
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import java.util.List; t
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publicclass PaginationSupport { "^F#oo%L
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publicfinalstaticint PAGESIZE = 30; svCD&~|K#
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privateint pageSize = PAGESIZE; %obR2%
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privateList items; <+o-{{E[
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privateint totalCount; rL3<r
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privateint[] indexes = newint[0]; dF:@BEo
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privateint startIndex = 0; ']Gqa$(YC
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public PaginationSupport(List items, int XAwo~E
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totalCount){ GR@!mf
setPageSize(PAGESIZE); 7cW9@xPe
setTotalCount(totalCount); X,n4_=f
setItems(items); &lbxmUeU
setStartIndex(0); T6h-E^Z
} Ni#!C:q
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public PaginationSupport(List items, int 'bJ!~ML&
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totalCount, int startIndex){ ?YWfoH4mS
setPageSize(PAGESIZE); ,(dg]7
setTotalCount(totalCount); bO 2>ced
setItems(items); ,A`d!{]5
setStartIndex(startIndex); 0{^vqh.La
} 1rKKp h
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public PaginationSupport(List items, int 6E/>]3~!
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totalCount, int pageSize, int startIndex){ Se<]g$eK?5
setPageSize(pageSize); jWJq[l
setTotalCount(totalCount); 0<_|K>5dS|
setItems(items); $3<,"&;Ecs
setStartIndex(startIndex); m^0r9y,
} w`=_|4wFw
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publicList getItems(){ v,y nz'>)
return items; 2+zE|I.
} ^!^6 | [
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publicvoid setItems(List items){ r8g4NsRVtv
this.items = items; vw5f.8T;w
} Z:DEET!c'k
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publicint getPageSize(){ ph{p[QI:{X
return pageSize; $&~/`MxE
} 3[I; 3=O
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publicvoid setPageSize(int pageSize){ HeABU(o4
this.pageSize = pageSize; !>fYD8Ft,
} yTzP{I
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publicint getTotalCount(){ ~,+n_KST;
return totalCount; j[l6&eX
} xFxl9oM."
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publicvoid setTotalCount(int totalCount){ o|Cq#JFG
if(totalCount > 0){
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this.totalCount = totalCount; D,q=?~
int count = totalCount / g?`g+:nug
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pageSize; Go~bQ2*'(/
if(totalCount % pageSize > 0) BC*vG=a
count++; &7z79#1NS
indexes = newint[count]; !`=ms1%U
for(int i = 0; i < count; i++){ ]@X5'r"
indexes = pageSize * d]1%/$v^
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} Z0&^U#]
}else{ S^q)DuF5!
this.totalCount = 0; +v4P9V|s
} j_N><_Jc
} =OfU#i"c
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publicint[] getIndexes(){
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return indexes; ?xEQ'(UBQ
} /~3~Xc~=p
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publicvoid setIndexes(int[] indexes){ Y.`
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this.indexes = indexes; Y<|!)JLB2
} S\fEV"
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publicint getStartIndex(){
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return startIndex; Fe
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} }L
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publicvoid setStartIndex(int startIndex){ 1HQh%dZZ
if(totalCount <= 0) ?#8',:
this.startIndex = 0; r~cmrLQa
elseif(startIndex >= totalCount) #qkokV6`
this.startIndex = indexes ZeewGa^r
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[indexes.length - 1]; 1'ne[@i^/
elseif(startIndex < 0) sX&.8
this.startIndex = 0; 0dS}pd">k
else{ tHNvb\MR$
this.startIndex = indexes jVP70c
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[startIndex / pageSize]; QZy+`
} |GuIp8~
} we'<Y
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publicint getNextIndex(){ x._IP,vRx^
int nextIndex = getStartIndex() + Bz}Dgbb
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pageSize; C${{&$&