Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ?^yh5
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 dWB8
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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 >Dp6@%
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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 ^zWO[$n}tP
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分页支持类: B'gk/^6$eg
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java代码: !{]v='
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package com.javaeye.common.util; 2GD mZl
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import java.util.List; { Sliy'
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publicclass PaginationSupport { xZ @O"*{
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publicfinalstaticint PAGESIZE = 30; VU+ s7L0
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privateint pageSize = PAGESIZE; Etr8lm E
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privateList items; eR*
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privateint totalCount; <C.$Db&9
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privateint[] indexes = newint[0]; f\F_?s)_y
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privateint startIndex = 0; ETWmeMN
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public PaginationSupport(List items, int a4a[pX,5
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totalCount){ : {N3o:
setPageSize(PAGESIZE); DHumBnQ
setTotalCount(totalCount); !,JT91
setItems(items); /DG`Hg
setStartIndex(0); U9p.Dh~)vG
} KGE-RK
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public PaginationSupport(List items, int mKFHT
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totalCount, int startIndex){ !qGx(D{\
setPageSize(PAGESIZE); I`$I0
setTotalCount(totalCount); 4\'81"ei
setItems(items); Z=t#*"J
setStartIndex(startIndex); #&2N,M!Q
} sv{0XVn+^
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public PaginationSupport(List items, int q;a*gqt
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totalCount, int pageSize, int startIndex){ z.9FDQLp
setPageSize(pageSize); )Q
setTotalCount(totalCount); +uiH0iGS
setItems(items); ,Qi|g'a
setStartIndex(startIndex); PN^1
} eGypXf%
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publicList getItems(){ <:;:*s3]
return items; twHM~cTS
} ~S=fMv^BR
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publicvoid setItems(List items){ 59NWyi4i
this.items = items; wZ3vF)2s
} 10I`AjF0
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publicint getPageSize(){ k-DB~-L
return pageSize; -MW(={#
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publicvoid setPageSize(int pageSize){ yb.|7U?/x
this.pageSize = pageSize; {_X1&&>8/
} "O1*uwm
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publicint getTotalCount(){ [#rdfN'?U
return totalCount; K8 4cE
} H6CGc0NS+
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publicvoid setTotalCount(int totalCount){ ?NzeP?g
if(totalCount > 0){ .L{+O6*c
this.totalCount = totalCount; b%jG?HSu
int count = totalCount / (kNTXhAr4
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pageSize; =^AZx)Kwd
if(totalCount % pageSize > 0) TNT"2FoBd
count++; GKx,6E#JM
indexes = newint[count]; @P5@&G
for(int i = 0; i < count; i++){ F t8h=
indexes = pageSize * f5qHBQ
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} CU^3L|f2N
}else{ @C [|'[xQ
this.totalCount = 0; ,~?A.
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} \C2P{q/m
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publicint[] getIndexes(){ +P)[|y +e
return indexes; nV xMo_
} ^8*SCM_A
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publicvoid setIndexes(int[] indexes){ 'xXqEwi4
this.indexes = indexes; M "P
} Y+`-~ 88
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publicint getStartIndex(){ ggsi`Z{j?
return startIndex; rxI&;F#
} tBI+uu aa2
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publicvoid setStartIndex(int startIndex){ X*yp=qI
if(totalCount <= 0) HYnq x>L ~
this.startIndex = 0; +rpd0s49
elseif(startIndex >= totalCount) (tLQX~Ur
this.startIndex = indexes 12'(MAP
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[indexes.length - 1]; @ ZPTf>J}
elseif(startIndex < 0) z'D{:q
this.startIndex = 0; Qbpl$L
else{ Fsj&/:
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this.startIndex = indexes vA-p}]%
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[startIndex / pageSize]; jz7ltoP
} <Jrb"H[T"
} W3/Stt$D
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publicint getNextIndex(){ sP8&p*TJF
int nextIndex = getStartIndex() + 4_0/]:~5
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pageSize; }w^ T9OC
if(nextIndex >= totalCount) ZBq*<VtV
return getStartIndex(); Z3~*R7G8>
else D2cIVx3:(
return nextIndex; q>4i0p8^
} e+ w
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publicint getPreviousIndex(){ Hz3X*G\5b
int previousIndex = getStartIndex() - !!O{ ppM
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pageSize; VgTI2
if(previousIndex < 0) 2.2a2.I1
return0; 3C[4!>|
else n(xlad
return previousIndex; :bDn.`KG#
} {^MAdC_
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抽象业务类 Cj\+u\U#
java代码: KrG6z#)Uz
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/** <FT\u{9$
* Created on 2005-7-12 #$C]0]|
*/ $<mL2$.L~
package com.javaeye.common.business; LK/V]YG
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import java.io.Serializable; q$'&R