Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 >0k7#q}O
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 <*3{Twa1T
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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 s^TF+d?B
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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 7L|w~l7R~
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分页支持类: >"q0"zrN,
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java代码: {mY<R`Ee
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package com.javaeye.common.util; ]:(>r&'
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import java.util.List; PX65Z|~>_
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publicclass PaginationSupport { \:mx Ri
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publicfinalstaticint PAGESIZE = 30; y:WRpCZoa
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privateint pageSize = PAGESIZE; &Y%Kr`.h
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privateList items; 3Q*K+(`{
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privateint totalCount; EGO;g^,
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privateint[] indexes = newint[0]; zYO+;;*@
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privateint startIndex = 0;
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public PaginationSupport(List items, int ny%-u&1k
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totalCount){ ?6+GE_VZ
setPageSize(PAGESIZE); !;.i#c_u
setTotalCount(totalCount); I1^0RB{~
setItems(items); (2(I|O#
setStartIndex(0); y;<^[
} `An|a~G1
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public PaginationSupport(List items, int 7\@[e, ^9
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totalCount, int startIndex){ {c`kC]9
setPageSize(PAGESIZE); |UZPn>F~
setTotalCount(totalCount); >i7zV`eK
setItems(items); NlXHOUw)u
setStartIndex(startIndex); ,pE{N&p9
} +C1/02ZJ
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public PaginationSupport(List items, int |0:<Z(
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totalCount, int pageSize, int startIndex){ w^e<p~i!^E
setPageSize(pageSize); %$|=_K)Ks
setTotalCount(totalCount); `=0}+
setItems(items); +!Q <gWb
setStartIndex(startIndex); 5VdF^.:u
} fw kX-ON
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publicList getItems(){ XBe!9/'k>
return items; ^+tAgK2
} ^_
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publicvoid setItems(List items){ +F$c_
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this.items = items; ^55#!/9
} / =&HunaxI
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publicint getPageSize(){ d|CSWcU
return pageSize; :td6Mywl
} 'bVDm m).
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publicvoid setPageSize(int pageSize){ 4<g,L;pUU
this.pageSize = pageSize; nylrF"'e
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publicint getTotalCount(){ *-"DZ
return totalCount; BS*IrH
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} MLg+ 9y
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publicvoid setTotalCount(int totalCount){ ':YFm
if(totalCount > 0){ %_C!3kKv~
this.totalCount = totalCount; ={ P
int count = totalCount / 0V6gNEAUg
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pageSize; hAq7v']m
if(totalCount % pageSize > 0) `%_ yRJd|;
count++; mTXeIng?
indexes = newint[count]; 7(c7-
for(int i = 0; i < count; i++){ ZdG?fWWA
indexes = pageSize * pv);LjF
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} -DD2
}else{ "`<tq#&C1
this.totalCount = 0; ?/"Fwjau
} yneIY-g(p
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publicint[] getIndexes(){ &("HH"!
return indexes; j6x1JM
} <NRW^#g<x
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publicvoid setIndexes(int[] indexes){ Q'-g+aN
this.indexes = indexes; W~(4t:hp
} T^FeahA7;
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publicint getStartIndex(){ 0'&N?rS
return startIndex; w}2 ;f=
} IJX75hE0g
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publicvoid setStartIndex(int startIndex){ O#[+=
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if(totalCount <= 0) g=iPv3MG
this.startIndex = 0; c*F'x-TH
elseif(startIndex >= totalCount) !<`}mE!:
this.startIndex = indexes J*V@huF
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[indexes.length - 1]; %&EDh2w>
elseif(startIndex < 0) MPSoRA: h
this.startIndex = 0; w.v yEU^
else{ lJZ-*"9V
this.startIndex = indexes B?o ?LI
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[startIndex / pageSize]; O [Q;[@
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} Y ;qA@|
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publicint getNextIndex(){ 8&d s
int nextIndex = getStartIndex() + 2RW^Nqc9
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pageSize; a3i;r M2
if(nextIndex >= totalCount) TF0DQP
return getStartIndex(); fMg3
else fK-tvP0}*
return nextIndex; N%3
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} #~ikR.-+Eq
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publicint getPreviousIndex(){ ^5BLuN6
int previousIndex = getStartIndex() - BNA` Cc1VV
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pageSize; ZH
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if(previousIndex < 0) Ky6.6Y<.|
return0; P1\:hh
else |ji={
return previousIndex; !%v=9muay
} H2EKr#(
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} +A3Q$1F
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抽象业务类 _dg2i|yP<
java代码: 4tZnYGvqe
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/** J~\`8cds
* Created on 2005-7-12 #zRT
*/ 0O_acO4
package com.javaeye.common.business; fF~3"!1#\I
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import java.io.Serializable;
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import java.util.List; Ng;K-WB\
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import org.hibernate.Criteria; MV+S.`R
import org.hibernate.HibernateException; k@,&'imx
import org.hibernate.Session; IV#kF}9$
import org.hibernate.criterion.DetachedCriteria; mAI<