Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ,sI<AFI
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 %;_94!(hC
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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 $>Qq 7
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 E@,m+
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分页支持类: J?{@pA
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java代码: ~-R%m
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package com.javaeye.common.util; =' uePM")
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import java.util.List; l^F ?^kP
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publicclass PaginationSupport { 50_[n$tqE
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publicfinalstaticint PAGESIZE = 30; aD]!
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privateint pageSize = PAGESIZE; "i#aII+T
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privateList items; "!+gA&
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privateint totalCount; J2<kOXXJ9
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privateint[] indexes = newint[0]; p8Z?R^$9H
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privateint startIndex = 0; (\0
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public PaginationSupport(List items, int &1(- 8z*
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totalCount){ U0gZf5;*
setPageSize(PAGESIZE); $=iw<B r
setTotalCount(totalCount); F+"_]
setItems(items); j$K*R."
setStartIndex(0); AbxhNNK
} G4uG"
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public PaginationSupport(List items, int ,AmwsXN"F
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totalCount, int startIndex){ 0:f]&Ng
setPageSize(PAGESIZE); Xu8I8nAwl
setTotalCount(totalCount); fWZ(
setItems(items); u\V^g
setStartIndex(startIndex); 3pg=9*{
} ,DZvBS
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public PaginationSupport(List items, int H4s~=iB
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totalCount, int pageSize, int startIndex){ J$Z=`=]t+
setPageSize(pageSize); t;BUZE_!0c
setTotalCount(totalCount); }x?F53I)
setItems(items); h%:rJ_#Zl
setStartIndex(startIndex); 4;fuS_(X
} CHsg2S
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publicList getItems(){ +LF#XS@
return items; w8XCU>
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} In?=$_p
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publicvoid setItems(List items){ N ai5!_'
this.items = items; ?u|@,tQ[
} CJ*
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publicint getPageSize(){ 8LbwEKl
return pageSize; XEgJ7h_
} VGmvfhf#"
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publicvoid setPageSize(int pageSize){ 5?lc%,-&
this.pageSize = pageSize; ^Jp,&
} 0?<#!
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publicint getTotalCount(){ Pg%9hejf3
return totalCount; ?3=G'Ip5n
} 7~ PL8
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publicvoid setTotalCount(int totalCount){ ;$QC_l''b
if(totalCount > 0){
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this.totalCount = totalCount; @eJCr)#}
int count = totalCount / N7?B"p/
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pageSize; j-":>}oW2.
if(totalCount % pageSize > 0) `
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count++; N-gYamlQ
indexes = newint[count]; uMJ\
for(int i = 0; i < count; i++){ /]_ t->
indexes = pageSize * <7M-?g:vj
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} _!nsEG
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}else{ q`VL i
this.totalCount = 0; WwDM^}e
} f#\YX
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} &EfQ%r}C
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publicint[] getIndexes(){ <Dd>- K
return indexes; +!/ATR%Uci
} 5o#JHD
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publicvoid setIndexes(int[] indexes){ Nc;O)K!FH
this.indexes = indexes; 8R,<S-+v
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publicint getStartIndex(){ K:wI'N"N
return startIndex; Jsz!ro
} Z!)~?<gcq:
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publicvoid setStartIndex(int startIndex){ 0NXH449I=
if(totalCount <= 0) mQj=-\p
this.startIndex = 0; l4OrlS/ 5
elseif(startIndex >= totalCount) >]\I:T
this.startIndex = indexes c.ow4~>
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[indexes.length - 1]; s6!6Oqh
elseif(startIndex < 0) !+eH8
this.startIndex = 0; vADiW~^Q^
else{ #c^V%
this.startIndex = indexes *m~-8_ >;
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[startIndex / pageSize]; '<R>cN"
} aD^$v
} eU[g@Pq:Y
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publicint getNextIndex(){ \^x{NV@v42
int nextIndex = getStartIndex() + $ik*!om5
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pageSize; cHs3:F~~
if(nextIndex >= totalCount) 8xAV[i
return getStartIndex(); Mo,&h?VOM?
else /yOx=V
return nextIndex; /wV|;D^ )
} 3Q=^&o