Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 i`!>zl+D
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 352RJC
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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 3E!3kSh|
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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 d}@n,3
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分页支持类: Ru$%gh>v
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java代码: {@[#0gPH
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package com.javaeye.common.util; 9r 5(
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import java.util.List; ~pwk[Q!
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publicclass PaginationSupport { * b"aJ<+
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publicfinalstaticint PAGESIZE = 30; $|I hO
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privateint pageSize = PAGESIZE; !#PA#Q|cO
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privateList items; MSe>1L2=
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privateint totalCount; sRC?l_n;
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privateint[] indexes = newint[0]; w3"%d~/[x
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privateint startIndex = 0; 5e^z]j1Yv
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public PaginationSupport(List items, int FaKZ|~Y
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totalCount){ )g ?'Nz
setPageSize(PAGESIZE); ?v&2^d4C*F
setTotalCount(totalCount); Z OqD.=O(
setItems(items); LRSt >;
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setStartIndex(0); L#N]1#;
} lN*"?%<x>
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public PaginationSupport(List items, int Q'aVdJN,
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totalCount, int startIndex){ k>:\4uI|<\
setPageSize(PAGESIZE); &x/Z{ut
setTotalCount(totalCount); ,E2c9V'
setItems(items); soA] f
setStartIndex(startIndex); Q 34-a"6)
} ;33SUgX
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public PaginationSupport(List items, int 5L,q,kVS
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totalCount, int pageSize, int startIndex){ '^tC |)
setPageSize(pageSize); )+f"J$ah
setTotalCount(totalCount); 5.lg*vh
setItems(items); -5@hU8B'a
setStartIndex(startIndex); 1|$J>
} *nwH1FjH
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publicList getItems(){ B8>@q!G8P
return items; 5oo6d4[
} [2ri=lf,
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publicvoid setItems(List items){ }*7Gq
this.items = items; 3w+ +F@(
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publicint getPageSize(){ >P-'C^:V=
return pageSize; )ZpMB
} uC2qP)m,^
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publicvoid setPageSize(int pageSize){ Sy^@v%P'A
this.pageSize = pageSize; kE1k@h#/
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publicint getTotalCount(){ srH.$Y;~
return totalCount; Bd[H@oKru
} ZpZoOdjslV
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publicvoid setTotalCount(int totalCount){ 7Kti&T
if(totalCount > 0){ a)!R4
this.totalCount = totalCount; *]ME]2qP
int count = totalCount / 8x9;3{R
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pageSize; Jjh=zxR>
if(totalCount % pageSize > 0) VgMuX3=
count++; 0kaMYV?
indexes = newint[count]; ^j<2s"S
for(int i = 0; i < count; i++){ H:o=gP60]
indexes = pageSize * /km0[M
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} $^W|@et{
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}else{ [V0%=q+ R
this.totalCount = 0; 3C2~heO>|
} cd4HbSp
} )~#3A@
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publicint[] getIndexes(){ $"3cN&
return indexes; xC2y/?
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publicvoid setIndexes(int[] indexes){ ~2QD.(
this.indexes = indexes; ge%tj O
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publicint getStartIndex(){ v=-T3
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return startIndex; +KIFLuL
} >vNE3S_
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publicvoid setStartIndex(int startIndex){ s2 $w>L
if(totalCount <= 0) 2=X.$&a
this.startIndex = 0; t5EYu*
elseif(startIndex >= totalCount) J n'SGR
this.startIndex = indexes u`u{\
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[indexes.length - 1]; hdYd2
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elseif(startIndex < 0) YH&0Vy#c$
this.startIndex = 0; D*ZswHT{y
else{ "1hFx=W+\
this.startIndex = indexes 'w_Qs~6~{
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[startIndex / pageSize]; `=2p6<#z
} _:!7M^IU
} D~ 7W
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publicint getNextIndex(){ j_SUR)5
int nextIndex = getStartIndex() + [vxHsY3z
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pageSize; _Pn
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if(nextIndex >= totalCount) ^NO4T
return getStartIndex(); 2W;2._
else c=p!2jJ1K~
return nextIndex; Kae-Y
} \
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publicint getPreviousIndex(){ TmJXkR.5
int previousIndex = getStartIndex() - fj[Kbo 7!h
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pageSize; Zl?9ibm;@
if(previousIndex < 0) ,
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else A1B%<$|pz
return previousIndex; E|_}?>{R
} k!d<2Qp W
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