Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 pA
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 DOk(5gR
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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 ]KsL(4PY
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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 Sdk:-Zuv
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分页支持类: r`t|}m
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java代码: jB"?iC.
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package com.javaeye.common.util; 3,Dc}$t
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import java.util.List; m2j&v$
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publicclass PaginationSupport { z2EZ0vZ
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publicfinalstaticint PAGESIZE = 30; **].d;~[l
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privateint pageSize = PAGESIZE; |H!kU.f]
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privateList items; 8$c_M
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privateint totalCount; &zGf`Zi6*%
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privateint[] indexes = newint[0]; I UMt^z
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privateint startIndex = 0; \wyn
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public PaginationSupport(List items, int QA=G+1x
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totalCount){ E3p3DM0F$
setPageSize(PAGESIZE); /b$0).fj@,
setTotalCount(totalCount); x]1G u
setItems(items); s,tZi6Z=%E
setStartIndex(0); l'~~hQ{h/
} mKsTA;
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public PaginationSupport(List items, int NXJyRAJ*%
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totalCount, int startIndex){ Qh3V[br
setPageSize(PAGESIZE); GzC=xXON
setTotalCount(totalCount); ^KKU@ab9
setItems(items); +IRr&J*P
setStartIndex(startIndex); u-31$z<<5}
} W7j-siWJ
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public PaginationSupport(List items, int h1y6`m9
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totalCount, int pageSize, int startIndex){ gwf*M3(
setPageSize(pageSize); %(9BWO
setTotalCount(totalCount); BIFuQ?j3
setItems(items); dzK]F/L]
setStartIndex(startIndex); FMuakCic5
} g^CAT1}
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publicList getItems(){ A3\%t@y
return items; 7 Q`'1oE?
} CL~21aslI
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publicvoid setItems(List items){ Kb<^Wdy4T
this.items = items; k Xs&k8
} yf2I%\p}
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publicint getPageSize(){ BUuU#e5
return pageSize; @iW^OVpp<8
} liYR8 D
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publicvoid setPageSize(int pageSize){ v4:g*MD?~
this.pageSize = pageSize; jq4'=L$4
}
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publicint getTotalCount(){ 7_AR()CM
return totalCount; UF
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} rCwjy&SuU^
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publicvoid setTotalCount(int totalCount){ 64#6L.Q-c
if(totalCount > 0){ n*4N%yI^m5
this.totalCount = totalCount; [vIHYp
int count = totalCount / g{`r WKj
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pageSize; m[@7!.0=
if(totalCount % pageSize > 0) \"E-z.wW=
count++; P]Hcg|&
indexes = newint[count]; STC'j1U
for(int i = 0; i < count; i++){ F-^#EkEGe
indexes = pageSize * 7[V6@K!Al[
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} dMA"% R
}else{ VTDp9s
this.totalCount = 0; UUxDW3K
} ..ig jc#UF
} /r4QDwu
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publicint[] getIndexes(){ yM3]<~m
return indexes; Jy,Dcl
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publicvoid setIndexes(int[] indexes){ o'W[v0>
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this.indexes = indexes; 6j]pJ]F6
} ty8\@l
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publicint getStartIndex(){ =xs{Ov=
return startIndex; $X.X_
} a\wpJ|3{=T
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publicvoid setStartIndex(int startIndex){ ^JDiI7
if(totalCount <= 0) EZm6WvlxSI
this.startIndex = 0; hM!D6: t
elseif(startIndex >= totalCount) 6J|Ee1Ez
this.startIndex = indexes lP@/x+6tg
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[indexes.length - 1]; [:HT=LX3
elseif(startIndex < 0) =6mnXpM.
this.startIndex = 0; 0]dL;~0y.
else{ bK)gB!
this.startIndex = indexes y<|vcg8x
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[startIndex / pageSize]; MZt~
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} C|kZT<,]
} c'=p4Fcm
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publicint getNextIndex(){ c\.8hd=<
int nextIndex = getStartIndex() + mVYLI!n}0#
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pageSize; i,=CnZCh
if(nextIndex >= totalCount) mQQ5>0^m
return getStartIndex(); Pv.z~~lY
else ?#F}mOVAa
return nextIndex; c&Pgz~iP
} W/O&(t
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publicint getPreviousIndex(){ Z3K~C_0Cnu
int previousIndex = getStartIndex() - +tz^ &(
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pageSize; /J8'mCuC.
if(previousIndex < 0) U?u0|Y+
return0; eMf+b;~R
else ;!(.hCHvr
return previousIndex; ;J3az`
} XgUvgJ
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} W&[}-E8<Y
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抽象业务类 NGHzifaE
java代码: (,<ti):
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/** F`9;s@V*
* Created on 2005-7-12 M2ig iR
*/ i"uAT$x e
package com.javaeye.common.business; !$'s?rnh
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import java.io.Serializable; fDmGgD?
import java.util.List; 4'pg>;*.
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import org.hibernate.Criteria; ZbJUOa?WF
import org.hibernate.HibernateException; N
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import org.hibernate.Session; pPcn
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import org.hibernate.criterion.DetachedCriteria;
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