Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 LfEeFF=#n
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 "d60IM#N?
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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 gwDQ@
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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 *2ZX*w37
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分页支持类: n`Pwo&
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java代码: eAh~`
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package com.javaeye.common.util; 7U>Xi'?
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import java.util.List; #T1py@b0zA
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publicclass PaginationSupport { F!*u}8/_!
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publicfinalstaticint PAGESIZE = 30; j+He8w-4
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privateint pageSize = PAGESIZE; ?.d6!vA
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privateList items; xT7JGQ[|
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privateint totalCount;
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privateint[] indexes = newint[0]; Atc<xp
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privateint startIndex = 0; kR2kV"-l
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public PaginationSupport(List items, int r(;sX
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totalCount){ d[mmwgSR?I
setPageSize(PAGESIZE); v?e@`;-
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setTotalCount(totalCount); F?#^wm5TZ
setItems(items); 6-8,qk
setStartIndex(0); K.s\xA5`_
} EXDZehLD<]
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public PaginationSupport(List items, int \c1u$'| v
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totalCount, int startIndex){ !n9H[QP^9
setPageSize(PAGESIZE); 04ZP\
setTotalCount(totalCount); #-5.G>8
setItems(items); W^{zlg
setStartIndex(startIndex); !nh7<VJ
} )Il)
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public PaginationSupport(List items, int 0LEJnl
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totalCount, int pageSize, int startIndex){ \)KLm
setPageSize(pageSize); RCM;k;@8V
setTotalCount(totalCount); 1vKAJ<4W
setItems(items); 1iNq|~
setStartIndex(startIndex); Vwxb6,}Z
} P2la/jN
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publicList getItems(){ f793yCiG
return items; zh8\
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} +9LIpU&5
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publicvoid setItems(List items){ ^n Gj 7b
this.items = items; jSi\/(E
} Rq`B'G9|c
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publicint getPageSize(){ u!4i+7}
return pageSize; z~8`xn,
} JZ=ahSi
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publicvoid setPageSize(int pageSize){ e_U1}{=t
this.pageSize = pageSize; dsJMhB_41U
} 90g=&O5@O
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publicint getTotalCount(){ 1jHugss9|
return totalCount; Fpe>|"&
} qPal'c0
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publicvoid setTotalCount(int totalCount){
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if(totalCount > 0){ f/"?(7F
this.totalCount = totalCount; }Pi}?
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int count = totalCount / M N-j$-y}
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pageSize; 95cIdF 6m
if(totalCount % pageSize > 0) c+dmA(JC
count++; =:neGqd\_E
indexes = newint[count]; >)`yG'[
for(int i = 0; i < count; i++){ #bIUO2yVo
indexes = pageSize * %?2:1o
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} V
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}else{ K/T4T\
this.totalCount = 0; !H)Cua)
} ]2zzY::Sd=
} d2\#Zlu<
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publicint[] getIndexes(){ "W71#n+[
return indexes; %Z.!T
} yj<j>JtN
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publicvoid setIndexes(int[] indexes){ n]nb+_-97
this.indexes = indexes; Z'Uc}M'U
} %"yy8~|
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publicint getStartIndex(){ VbU*&{j
return startIndex; Nbyc,a[o
} xZ=6
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publicvoid setStartIndex(int startIndex){ ^ "D
if(totalCount <= 0) ;\mTm;]G
this.startIndex = 0; %DQ!#Nl*
elseif(startIndex >= totalCount) `4Db( ~
this.startIndex = indexes {zNFp#z
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[indexes.length - 1]; Q[6<Y,}(pd
elseif(startIndex < 0) (Zi,~Wqm$
this.startIndex = 0; pw,
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else{ :Vnus
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this.startIndex = indexes +.3,(l
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[startIndex / pageSize]; K?J?]VCw
} f.e4 C,
} }LA7ku
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publicint getNextIndex(){ (_ TKDx_
int nextIndex = getStartIndex() + qA;!Pql`
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pageSize; b<E0|VW
if(nextIndex >= totalCount) 9JtPP
return getStartIndex(); (~U1X4
else M[:},?ah0
return nextIndex; [&MhAzF
} hLo'q^mGr
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publicint getPreviousIndex(){ x2M{=MExE.
int previousIndex = getStartIndex() - &al\8
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pageSize;
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if(previousIndex < 0) 7dh--.i
return0; hsJS(qEh.'
else ~IQ 2;A
return previousIndex; A5q%ytI
} C<B1zgX
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} Cn"L*\o
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抽象业务类 ~i5t1
java代码: .>^iU}
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/** ^2<nn op
* Created on 2005-7-12 &{=`g+4n
*/ V|T3blG?D
package com.javaeye.common.business; uc?`,;8{`
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import java.io.Serializable; $ 0Up.
import java.util.List; s9.nU
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import org.hibernate.Criteria;
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import org.hibernate.HibernateException; P$hmDTn72
import org.hibernate.Session; *{%d{x}l
import org.hibernate.criterion.DetachedCriteria; $g @-WNe
import org.hibernate.criterion.Projections; xA#'%|"
import <