Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 3D09P5$W
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 wCTR-pL^
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 WJSHLy<a
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 &?g!}Ky \
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分页支持类: x>9EVa)
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java代码: --%2=.X=
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package com.javaeye.common.util; 8m[L]6F(-z
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import java.util.List; DF[b?
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publicclass PaginationSupport { KW6" +,Th
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publicfinalstaticint PAGESIZE = 30; E|4XQ|B@
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privateint pageSize = PAGESIZE; 5GFnfc}
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privateList items; \\G6c4fC
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privateint totalCount; ~m|?! ]n
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privateint[] indexes = newint[0]; QRHm|f9_C
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privateint startIndex = 0; ;)]zv\fC
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public PaginationSupport(List items, int .z>." `
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totalCount){ H$z+gbjJ
setPageSize(PAGESIZE); f$W}d0(F;
setTotalCount(totalCount); rLVc<595
setItems(items); !>@V#I
setStartIndex(0); Iy4MMU
} P"~T*Qq-R
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public PaginationSupport(List items, int _r5Ild@n
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totalCount, int startIndex){ }qdJ8K
setPageSize(PAGESIZE); E0Y/N?
setTotalCount(totalCount); 9la~3L_g
setItems(items); yaXa8v'oC
setStartIndex(startIndex); ,h`D(,?X
} t RyGxqiG
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public PaginationSupport(List items, int $q$\GOQ 9
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totalCount, int pageSize, int startIndex){ jTgh+j]AP
setPageSize(pageSize); ;<@O^_+
setTotalCount(totalCount); X$&Sw3c
setItems(items); _r|ytQ)
setStartIndex(startIndex); !skiD}zd1
} =l'_*B8
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publicList getItems(){ X/7_mU>aKT
return items; 3M*[a~
} GWZXRUc
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publicvoid setItems(List items){ Q4:r$
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this.items = items; S|4/C
} ~%K(ou=2
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publicint getPageSize(){ 1WN93SQ=
return pageSize; L Hz<=]?@
} VEEeQy
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publicvoid setPageSize(int pageSize){ 7[1
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this.pageSize = pageSize; R.`J"J0/~
} 5o ^=~
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publicint getTotalCount(){ [
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return totalCount; 7Ej#7\TB]
} L5uI31
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publicvoid setTotalCount(int totalCount){ Y1+lk^
if(totalCount > 0){ =xet+;~ji
this.totalCount = totalCount; Zs|sPatV<
int count = totalCount / ,VsCRp
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pageSize; QaBXzf
if(totalCount % pageSize > 0) XJ?z{gXJ
count++; +`3ZH9
indexes = newint[count]; '="){
for(int i = 0; i < count; i++){ @}!$NI8
indexes = pageSize * w>Sz^_ h
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} !`=?<Fl
}else{ <ijmkNVS
this.totalCount = 0; Z[bC@y[Wb
} }0>/G?2Yp
} N|vJrye
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publicint[] getIndexes(){ .Q)"F /
return indexes; oA@^N4PD
} mXaUWgO
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publicvoid setIndexes(int[] indexes){ .WE0T|qDX
this.indexes = indexes; ;_&L^)~P$
} bQjHQ"G
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publicint getStartIndex(){ :/l
return startIndex; 1&"1pH
} 0^Cx`xdX:
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publicvoid setStartIndex(int startIndex){ @cGql=t
if(totalCount <= 0) bM3e7olWS
this.startIndex = 0; S]g)^f'a65
elseif(startIndex >= totalCount) liP{Mu/LO
this.startIndex = indexes e,UgTxZ
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[indexes.length - 1]; iUB ni&B
elseif(startIndex < 0) ttVSgKAsm
this.startIndex = 0; 5xUPqW%3
else{ y<(.,Nb8
this.startIndex = indexes ;f~'7RKy!G
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[startIndex / pageSize]; 9Bw"VN]W
} vy?YA-
} e5KF ~0`
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publicint getNextIndex(){ Y|nTc.A
int nextIndex = getStartIndex() + Mv=;+?z!
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pageSize; ?0Zw ^a
if(nextIndex >= totalCount) Lr:K0A.Ch
return getStartIndex(); xII!2.
else ]XyJ7esg
return nextIndex; i`L66uV
} {rLOAewr
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publicint getPreviousIndex(){ +-d>Sl (
int previousIndex = getStartIndex() - Cz)D3Df^
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pageSize; {piS3xBi
if(previousIndex < 0) Y,~]ecI
return0; h+(s/o?\
else 7RJW
return previousIndex; < *OF
} LL+rdxJO^
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} (p!AX<=z
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抽象业务类 {*9i}w|2
java代码: ?]N&H90^5
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/** e:
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* Created on 2005-7-12 Q2JjBV<
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package com.javaeye.common.business; N0C5FSH
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import java.io.Serializable; -X
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import java.util.List; ]du~V?N
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import org.hibernate.Criteria; WgB,,L,
import org.hibernate.HibernateException; owhht98y(
import org.hibernate.Session; Rim}DfO/
import org.hibernate.criterion.DetachedCriteria; &