Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 +LddW0h+=8
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 qT]Bl+h2
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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 Yc;cf%c1
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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 N}{CL(xi
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分页支持类: ,])@?TJb@
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java代码: ^$3 ~;/|
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package com.javaeye.common.util; )Y':u_Lo
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import java.util.List; x h[4d
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publicclass PaginationSupport { YbZ<=ZzO4
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publicfinalstaticint PAGESIZE = 30; EN@LB2
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privateint pageSize = PAGESIZE; E:BEQ:(~L
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privateList items; x)<5f|j
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privateint totalCount; M
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privateint[] indexes = newint[0]; _@D}2
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privateint startIndex = 0; }%k,PYe/
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public PaginationSupport(List items, int #$V`%2>
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totalCount){ rC] jz$sle
setPageSize(PAGESIZE); ]*a)'k_@[
setTotalCount(totalCount); J{72%S
setItems(items); .K^'Q|?
setStartIndex(0); @ [_I|
} Db({k,P'Y
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public PaginationSupport(List items, int 'N,3]Soi
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totalCount, int startIndex){ :6LOb f\01
setPageSize(PAGESIZE); 6 .DJRY
setTotalCount(totalCount); g-xbb&]
setItems(items); ;@K,>$ur-
setStartIndex(startIndex); G[u_Uu=>
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public PaginationSupport(List items, int AG)N^yd
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totalCount, int pageSize, int startIndex){ /b@0HL?
setPageSize(pageSize); >K#Z]k
setTotalCount(totalCount); Jl3l\I'
setItems(items); !7J;h{3Uw
setStartIndex(startIndex); Z91gAy^z<
} 18w[T=7)
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publicList getItems(){ 9.e?<u*-z
return items; Fy-nV%P
} Sw#Ez-X
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publicvoid setItems(List items){ qM@][]j:
this.items = items; [$3Zid
} IC[SJVH;
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publicint getPageSize(){ `{I,!to
return pageSize;
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} l>"gO9j
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publicvoid setPageSize(int pageSize){ .&7=ZY>E
this.pageSize = pageSize; U._ U!U
} M@!Gk
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publicint getTotalCount(){ k}>l+_*+7
return totalCount; 05*_h0}
} 'DsfKR^s
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publicvoid setTotalCount(int totalCount){ 2bX!-h
if(totalCount > 0){ y=9a2[3Dz
this.totalCount = totalCount; -j3 -H&
int count = totalCount / L3q)j\ls
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pageSize; <)Kjf/x
if(totalCount % pageSize > 0) T'XAcH
count++; oiO3]P]P
indexes = newint[count]; &\sg~
for(int i = 0; i < count; i++){ H?40yu2m5
indexes = pageSize * O,qR$#l
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} f;u;hQxs
}else{ *-+~H1tP
this.totalCount = 0; pzU">)
} .j88=t0
} 9ciL<'H\
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publicint[] getIndexes(){ 3}g?d/^E3
return indexes; 1:YDN.*
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publicvoid setIndexes(int[] indexes){ Si]Z `_
this.indexes = indexes; 4)Pt]#Ti
} 8SAz,m!W)
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publicint getStartIndex(){ UMhM8m!=o
return startIndex; &[*<>
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publicvoid setStartIndex(int startIndex){ 7M;Y#=sR
if(totalCount <= 0) 8x,;B_Zu
this.startIndex = 0; 9U}EVpD
elseif(startIndex >= totalCount) (-dJ0!
this.startIndex = indexes xDADJ>u2K
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[indexes.length - 1]; W\~ZmA.
elseif(startIndex < 0) "r"]NyM
this.startIndex = 0; T>f-b3dk
else{ )STt3.
this.startIndex = indexes _%zU^aE
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[startIndex / pageSize]; PYz| d
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publicint getNextIndex(){ ) 0}o bPp
int nextIndex = getStartIndex() + LiV]!*9$KG
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pageSize; <Isr
if(nextIndex >= totalCount) y
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return getStartIndex(); Ds}6{']K
else
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return nextIndex; (/*-M]>
} _4E+7+
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publicint getPreviousIndex(){ tQFFt,)
int previousIndex = getStartIndex() - uDoSe^0
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pageSize; f4tia.
if(previousIndex < 0) n<hwstk
return0; {Z?!*Ow
else z0Zl'
return previousIndex; , JZ@qmQ,
} $(CHwG-
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抽象业务类 `HJw wKd
java代码: A1'IK.
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/** =)I{KT:y
* Created on 2005-7-12 O/-OW: 03
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package com.javaeye.common.business; rW6w1
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import java.io.Serializable; /:USpuu
import java.util.List; 'Gt`3qG
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import org.hibernate.Criteria; SfR!q4b=
import org.hibernate.HibernateException; pEaH^(I*
import org.hibernate.Session; 0>?mF]M
import org.hibernate.criterion.DetachedCriteria; ~~fL`"
import org.hibernate.criterion.Projections; ?b7vc^E&
import gTQ6B,`/8
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org.springframework.orm.hibernate3.HibernateCallback; zYs? w=
import (f.A5~e
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org.springframework.orm.hibernate3.support.HibernateDaoS <