Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 T[k$ [
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 PD.$a-t
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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 \j62"
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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 "j,vlG
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分页支持类: I\k<PglRA
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java代码: '!7>*<
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package com.javaeye.common.util; ~. vridH
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import java.util.List; (!5Ta7X
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publicclass PaginationSupport { TsK!36cg
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publicfinalstaticint PAGESIZE = 30; =IsmPQKi
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privateint pageSize = PAGESIZE; .F 6US<]
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privateList items; \j`0f=z_
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privateint totalCount; $e7%>*?m
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privateint[] indexes = newint[0]; .s*N1
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privateint startIndex = 0; Mu[lk=jC
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public PaginationSupport(List items, int U+x^!{[/
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totalCount){ 8O'bCBhv
setPageSize(PAGESIZE); >80k5$t
setTotalCount(totalCount); OA&'T*)-A6
setItems(items); E .Xp\Dm71
setStartIndex(0); H@1'El\9
} $kTm"I
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public PaginationSupport(List items, int s"=TM$Vb
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totalCount, int startIndex){ nD
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setPageSize(PAGESIZE); X+XDfEt:Q
setTotalCount(totalCount); -K=.A*}
setItems(items); \DQu!l@1U
setStartIndex(startIndex); @Z
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} 1 Q(KZI
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public PaginationSupport(List items, int o{,IO!q
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totalCount, int pageSize, int startIndex){ *gwlW/%Fz
setPageSize(pageSize); ]{6/6jl
setTotalCount(totalCount); u>fMO9X}2
setItems(items); wkx9@?2*
setStartIndex(startIndex); R QQ'Wg
} D#&9zR86F
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publicList getItems(){ Hh^ "c}
return items; =\%ER/
} K`Kv .4
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publicvoid setItems(List items){ 2~$S @c
this.items = items; ),p0V
} M/p9 I
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publicint getPageSize(){ r89AX{:
return pageSize; /&Oo)OB;
} 0Gs\x
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publicvoid setPageSize(int pageSize){ _gqqPny4$
this.pageSize = pageSize; c1k[)O~
} nKm#
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publicint getTotalCount(){ 0 MK}
return totalCount; 5VTVx1P[8
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publicvoid setTotalCount(int totalCount){ -n 9&W
if(totalCount > 0){ e&z@yy$
this.totalCount = totalCount; 0! 3. .5==
int count = totalCount / T&'Jc
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pageSize; m~
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if(totalCount % pageSize > 0) MTtx|L\4
count++; ej-A=avd
indexes = newint[count]; wI|h9q1U
for(int i = 0; i < count; i++){ $~b6H]"9
indexes = pageSize * v
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} \lQ3j8U
}else{ bIiuna\
this.totalCount = 0; y{@\8B]
} ?-)!dl%N
} k 3m_L-
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publicint[] getIndexes(){ (Y)2[j
return indexes; OWewV@VXR
} lk
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publicvoid setIndexes(int[] indexes){ hEB5=~A_
this.indexes = indexes; jV}8VK*`+
} 0beP7}$
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publicint getStartIndex(){ Jo\MDyb]
return startIndex; m:h6J''<Z*
} o+Jnn"8
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publicvoid setStartIndex(int startIndex){ nv_v FK
if(totalCount <= 0) a|z-EKV
this.startIndex = 0; v]( Y n)#
elseif(startIndex >= totalCount) eI$V2
this.startIndex = indexes ?{ExBZNa
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[indexes.length - 1]; Dq<la+VlO
elseif(startIndex < 0) Csuasi3]1d
this.startIndex = 0; D:Q#%wJ
else{ [bHm-X]
this.startIndex = indexes ~g=&wT11
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[startIndex / pageSize]; $"vz>SuB
} .+1I>L
} #s c!H4
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publicint getNextIndex(){ c7r(&h
int nextIndex = getStartIndex() + 06]3+s{{
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pageSize; X\Bl?
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if(nextIndex >= totalCount) |s!
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return getStartIndex(); ^Q`5+
else aPelt`
return nextIndex; +4%~.,<_to
} L-w3A:jk
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publicint getPreviousIndex(){ ndLEIqOY
int previousIndex = getStartIndex() - ,RR{Y-
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pageSize; by>%}#M
if(previousIndex < 0) Z2M(euzfi3
return0; Y|LL]@Lv
else k";dK*hD,
return previousIndex; C!^A\T7p
} MOQ6&C`7q
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抽象业务类
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java代码: 68z#9}
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/** nKGQU,C
* Created on 2005-7-12 9Do75S{(
*/ $^fF}y6N
package com.javaeye.common.business; 0;TiNrzg
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import java.io.Serializable; f DXK<v)
import java.util.List; #`3Q4
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import org.hibernate.Criteria; &