Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Usvl}{L[
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 [z:!j$K
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 b1cy$I
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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
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分页支持类: .e#w)K
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java代码: KR}?H#%
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package com.javaeye.common.util; Cp\6W[2+B
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import java.util.List; hW<%R]^|
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publicclass PaginationSupport { /PVk{3
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publicfinalstaticint PAGESIZE = 30; cZ,b?I"Q%
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privateint pageSize = PAGESIZE; -OV&Md:~
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privateList items; L;z?aZ7n
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privateint totalCount; 2DA]i5
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privateint[] indexes = newint[0]; Da*?x8sSL
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privateint startIndex = 0; +Ze}B*0
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public PaginationSupport(List items, int G[ PtkPSJ
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totalCount){ 38B2|x
setPageSize(PAGESIZE); 4>
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setTotalCount(totalCount); =jN.1}
setItems(items); b=C*W,Q_#
setStartIndex(0); As&Sq-NWf
} (MM]N=Tw4
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public PaginationSupport(List items, int qz_7%c]K[
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totalCount, int startIndex){ )MVz$h{c.]
setPageSize(PAGESIZE); bIDj[-CDG
setTotalCount(totalCount); K-)]
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setItems(items); M)Z7k/=<P
setStartIndex(startIndex); zaIKdI'/e
} fUWG*o9
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public PaginationSupport(List items, int h8q[1"a:
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totalCount, int pageSize, int startIndex){ ,&A7iO
setPageSize(pageSize); RMV/&85?y
setTotalCount(totalCount); 6yG^p]zZ
setItems(items); Z?q]bSIT
setStartIndex(startIndex); C}j"Qi`
} N{!i=A
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publicList getItems(){ NG=-NxEcN
return items; B:Oa}/H
} #P9~}JB3,
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publicvoid setItems(List items){ d'gfQlDny
this.items = items; F~vuM$+d
} R_cA:3qc~
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publicint getPageSize(){ AR%4D3Dma
return pageSize; Tk[ $5u*,
} p$c6<'UqH
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publicvoid setPageSize(int pageSize){ bH nT6Icom
this.pageSize = pageSize; *KF#'wi
} e2Pcm_Ahv*
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publicint getTotalCount(){ |3b^~?S
return totalCount; r|8d
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} k
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publicvoid setTotalCount(int totalCount){ 3ZPWze6
if(totalCount > 0){ sE<V5`Z=
this.totalCount = totalCount; 7aRi5
int count = totalCount / !*&V-4
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pageSize; 05#1w#i
if(totalCount % pageSize > 0) Y] _ruDIW
count++; 1-uxC^u?|#
indexes = newint[count]; 2,oKVm+
for(int i = 0; i < count; i++){ ?=7cF
indexes = pageSize * 2zA4vZkbcw
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} (,\+tr8r8
}else{ `?rSlR@+[I
this.totalCount = 0; U}[d_f
} bH9kj/q\b
} |s(FLF -
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publicint[] getIndexes(){ HWrO"b*tO
return indexes; ua$GNm
} e]"W!KcD9
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publicvoid setIndexes(int[] indexes){ {4}yKjW%z
this.indexes = indexes; n,(sBOQ
} >8^
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publicint getStartIndex(){ bo>*fNqAIy
return startIndex; {6|G@""O
} 65P0,b6"OT
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publicvoid setStartIndex(int startIndex){ y2dCEmhY
if(totalCount <= 0) D/xbF`
this.startIndex = 0; 2WL|wwA
elseif(startIndex >= totalCount) ZF8 yw(z
this.startIndex = indexes _/$Bpr{R
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[indexes.length - 1]; kZ
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elseif(startIndex < 0) sf
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this.startIndex = 0; \ a<h/4#|
else{ k,6f
this.startIndex = indexes /4V#C-
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[startIndex / pageSize]; J?1 uKR
} ::lKL
} wu!59pL
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publicint getNextIndex(){ :{v#'U/^
int nextIndex = getStartIndex() + 4jMFr,
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pageSize; (zYtNLoFx
if(nextIndex >= totalCount) {X+3;&