Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 IMaa#8,
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 _#6_7=g@s6
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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 _9%R
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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 s-V5\Lip,
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分页支持类: ZT*RD2,
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java代码: #S?xRqkc
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package com.javaeye.common.util; RR,gC"cTi
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import java.util.List; ,+0#.Ns$
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publicclass PaginationSupport { rkdf htpI
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publicfinalstaticint PAGESIZE = 30; W_w^"'
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privateint pageSize = PAGESIZE; 2g>4fZ
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privateList items; E-P;3lS~
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privateint totalCount; lX^yd5M&f
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privateint[] indexes = newint[0]; u9-:/<R#}y
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privateint startIndex = 0; V`F]L^m=L
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public PaginationSupport(List items, int :A+nmz!z
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totalCount){ YNEPu:5J
setPageSize(PAGESIZE); A~MAaw!YE
setTotalCount(totalCount); |y,%dFNLf
setItems(items); ulY8$jB
setStartIndex(0); YVcFCl
} 5](-(?k}~
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public PaginationSupport(List items, int G/l 28yt
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totalCount, int startIndex){ 2~yYwX
setPageSize(PAGESIZE); R#D>m8&}3
setTotalCount(totalCount); CC?L~/gPN
setItems(items); {s ]yP_
setStartIndex(startIndex); ${(c`X
} k!9LJ%Xh
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public PaginationSupport(List items, int ,ALEfepo
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totalCount, int pageSize, int startIndex){ +4 8a..4sN
setPageSize(pageSize); r&$r=f<
setTotalCount(totalCount); %}T' 3
setItems(items); *{_WM}G
setStartIndex(startIndex); QqpXUyHp[
} F]_w~1
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publicList getItems(){ zk\YW'x|r
return items; 5somoV B
} |wef [|@%
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publicvoid setItems(List items){ 28/At
this.items = items; s&>U-7fx"
} %(f&).W
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publicint getPageSize(){ @-^jbmu^
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return pageSize; l1<]pdLTR
} \FE
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publicvoid setPageSize(int pageSize){ E5>y?N
this.pageSize = pageSize; ],!7S"{97
} A*&`cUoA
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publicint getTotalCount(){ ,CGq_>Z
return totalCount; \J]qd4tF
} } "QV{W
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publicvoid setTotalCount(int totalCount){ `>kHJI4
if(totalCount > 0){ 4&)4hF
this.totalCount = totalCount; hv]}b'M$
int count = totalCount / orT%lHwjL
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pageSize; 8-f2$
if(totalCount % pageSize > 0) m+jW+
count++; Cf~H9
indexes = newint[count]; Bu%TTbnz_G
for(int i = 0; i < count; i++){ /'yi!:FZFC
indexes = pageSize * @<n8?"{5S
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} g8+Ke'=_
}else{ rM|] }M=_V
this.totalCount = 0; ~~8?|@V
} p3e_:5k
} ap
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publicint[] getIndexes(){ <KBzZ
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return indexes; )&jE<C0
} do-mkvk
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publicvoid setIndexes(int[] indexes){ }]fJ[KbDp
this.indexes = indexes; 7W7!X\0Y
} gwm}19JC
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publicint getStartIndex(){
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return startIndex; |z]O@@j$
} Xp_3EQl
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publicvoid setStartIndex(int startIndex){ R)[ l3
if(totalCount <= 0) yf lt2 R
this.startIndex = 0; bwr}Ge
elseif(startIndex >= totalCount) &,4 3&pFU
this.startIndex = indexes
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[indexes.length - 1]; H#Aar
elseif(startIndex < 0) l^LYSZg'R8
this.startIndex = 0; |=\w b^l+
else{ oo+nqc`,O
this.startIndex = indexes eD#R4
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[startIndex / pageSize]; W-72&\7
} BAJEn6f?
} *[ @k=!73
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publicint getNextIndex(){ o3s ME2
int nextIndex = getStartIndex() + ]< Ugg
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pageSize; qGH
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if(nextIndex >= totalCount) ,(D:cRN
return getStartIndex(); =P,h5J
else ^")SU(`
return nextIndex; bOY<C%;C
} P
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publicint getPreviousIndex(){ {I]X-+D|_
int previousIndex = getStartIndex() - e>GX]tK
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pageSize; PX5K-|R
if(previousIndex < 0) Dej2-Y
return0; & rsNB:!
else 2V-zmyJs5
return previousIndex; zG[GyyAQ
} vv9=g*"j
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} O<:"Irq\qr
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抽象业务类 XAnN<
java代码: #RyX}t X,
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/** 2$Fy?08q
* Created on 2005-7-12 <c X\|dM
*/ RKt#2%FFO
package com.javaeye.common.business; 3T<aGW1
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