Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 |}Lgo"cTC
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 xz'd5 re%
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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 9D21e(7X
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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 "xI[4~'`:
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分页支持类: {HDlv[O%
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java代码: -qF| Y
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package com.javaeye.common.util; SsZzYj.d
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import java.util.List; bq]a8tSB
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publicclass PaginationSupport { [t'"4
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publicfinalstaticint PAGESIZE = 30; r1]e:
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privateint pageSize = PAGESIZE; qiN'Tuw9
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privateList items; iI7~9SCE
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privateint totalCount; Y}Uw7\e
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privateint[] indexes = newint[0]; *Yw6UCO
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privateint startIndex = 0; WTx;,TNG
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public PaginationSupport(List items, int (Bz(KyD[
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totalCount){ ` 0F
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setPageSize(PAGESIZE); .MlE1n'
setTotalCount(totalCount); +fN0>@s
setItems(items); ^da-R;o]
setStartIndex(0); v},sWjv
} vCM'nkXY
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public PaginationSupport(List items, int dQ]j
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totalCount, int startIndex){ Z/x~:u_
setPageSize(PAGESIZE); XJ9>a-{
setTotalCount(totalCount); lRb)Tz6SE
setItems(items); Y|F);XXIl
setStartIndex(startIndex); 75y#^pD?c
} Yi`.zm
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public PaginationSupport(List items, int 5>
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totalCount, int pageSize, int startIndex){ .;'xm_Gw<
setPageSize(pageSize); <,{v>vlw
setTotalCount(totalCount); /Q-!><riD
setItems(items); 0W)_5f&
setStartIndex(startIndex); bHCd|4e,2
} $1e@3mzM
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publicList getItems(){ @OpcS>:R
return items; `Oi@7/oT
} %}/)_RzQ
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publicvoid setItems(List items){ S`::f(e
this.items = items; zv41Yv!x}
} vzL>ZBeZ
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publicint getPageSize(){ g!$
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return pageSize; [kCn6\_<V
} UxW~yk
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publicvoid setPageSize(int pageSize){ ?@~FT1"6G
this.pageSize = pageSize; ;(XSw%Y
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publicint getTotalCount(){ t/3veDh@
return totalCount; \sk,3b-&'
} 2dC)%]aLme
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publicvoid setTotalCount(int totalCount){ |A2.W8`o
if(totalCount > 0){ \ .:CL?m#
this.totalCount = totalCount; q+K`+& @\
int count = totalCount / g$A1*<+
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pageSize; k=LY 6
if(totalCount % pageSize > 0) .8"o&%$`V
count++; /(q*
indexes = newint[count]; cJt#8P
for(int i = 0; i < count; i++){ o*<(,I%
indexes = pageSize * PgVM>_nHk
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}else{ 6:e0?R^aD"
this.totalCount = 0; }>grGr%oR
} 46mu,v
} &B))3WFy
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publicint[] getIndexes(){ blLX ncyD
return indexes; jildiT[s
} [ P
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publicvoid setIndexes(int[] indexes){ }@x0@sI9
this.indexes = indexes; k(T/ydrw
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publicint getStartIndex(){ C3D1rS/I
return startIndex; `AYHCn
} ](^xA`
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publicvoid setStartIndex(int startIndex){ d=q2Or
if(totalCount <= 0) P}cGWfj
this.startIndex = 0; ).k=[@@V
elseif(startIndex >= totalCount) vh((HS-)
this.startIndex = indexes SV-pS>#
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[indexes.length - 1];
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elseif(startIndex < 0) [7$.)}Q-
this.startIndex = 0; `2{x8A
else{ $LKniK
this.startIndex = indexes y+@7k3"
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[startIndex / pageSize]; 7v#sr<
} i:@00)V{,
} _8kZ>w( L
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publicint getNextIndex(){ cu.f]'
int nextIndex = getStartIndex() + vWwp'q
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pageSize; (J5E]NV
if(nextIndex >= totalCount) LY/K,6^a
return getStartIndex(); &Zd!|u
else 0zetOlFbO
return nextIndex; lkOugjI
} G|v{[>tr
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publicint getPreviousIndex(){ :,% vAI
int previousIndex = getStartIndex() - *RivZ
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pageSize; RoT}L#!!
if(previousIndex < 0) yY[N\*P
return0; +,f|Y6L<