Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 YZ}gZQ.A0
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 Hcpw[%(
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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 d0,I] "
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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 #'[ f^xgJ
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分页支持类: j(SQNSFD
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java代码: ]loO 5
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package com.javaeye.common.util; {>:2Ff]O:
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import java.util.List; f,$CiZ"
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publicclass PaginationSupport { 9H<:\-:
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publicfinalstaticint PAGESIZE = 30; 4DNZ y2`
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privateint pageSize = PAGESIZE; o)$sZ{` ="
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privateList items; $6_J`7
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privateint totalCount; 6O"0?wG+
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privateint[] indexes = newint[0]; SSzOz-&GA
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privateint startIndex = 0; Bg3^BOT
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public PaginationSupport(List items, int wxoBq{r;
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totalCount){ k~?@~xm,R
setPageSize(PAGESIZE); Un<~P@T%
setTotalCount(totalCount); FnCHbPlb
setItems(items); ?O_;{(F_
setStartIndex(0); ;c'jBi5W
} l-mUc1.S
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public PaginationSupport(List items, int #):FXB$a
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totalCount, int startIndex){ ]6%| L
setPageSize(PAGESIZE); ICGBU>Db
setTotalCount(totalCount); {C<ch@sR
setItems(items); j3FDGDrg
setStartIndex(startIndex); Tx!mW-Lt
} DukCXyB*l
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public PaginationSupport(List items, int b&!X#3(KT
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totalCount, int pageSize, int startIndex){ <)rol
setPageSize(pageSize); _/KN98+
setTotalCount(totalCount); a.q=
setItems(items); _xbVAI4
setStartIndex(startIndex); Jo2:0<VL
} ?gTY!;$P
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publicList getItems(){ 2r1.,1
return items; #wt#-U;
} vmL0H)q
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publicvoid setItems(List items){ fu33wz1$}B
this.items = items; Ix}:!L
} A_CK,S*\,&
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publicint getPageSize(){ Z5+qb
return pageSize; :] :q=1;c
} wVp
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publicvoid setPageSize(int pageSize){ |E|d"_Ma
this.pageSize = pageSize; <D=U= 5
} YX-G>.Pc
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publicint getTotalCount(){ *_@8 v?
return totalCount; ?oP<sGp
} B!6?+<J"
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publicvoid setTotalCount(int totalCount){ OTSbhI'v
if(totalCount > 0){ cR_85
this.totalCount = totalCount; Ub0g{
int count = totalCount / 1^$ vmULj
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pageSize; d'q,:="c
if(totalCount % pageSize > 0) !5&%
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count++; QF
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indexes = newint[count]; ?X~Keb
for(int i = 0; i < count; i++){ %,1bh
indexes = pageSize * CB\E@u,
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} -ich N/U]s
}else{ ~{/"fTif
this.totalCount = 0; N8_
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} ,p {|f}0
} 3%p^>D\
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publicint[] getIndexes(){ t&*X~(Yb!
return indexes; ha&2V=
} 7&-B6Y4
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publicvoid setIndexes(int[] indexes){ PS7ta?V
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this.indexes = indexes; %L, mj
} GAI(=
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publicint getStartIndex(){ !#xk?L yB
return startIndex; OXAr..
} ER-X1fD
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publicvoid setStartIndex(int startIndex){ *.qm+#8W
if(totalCount <= 0) cdY|z]B
this.startIndex = 0; js^+ {~
elseif(startIndex >= totalCount) MROe"Xj
this.startIndex = indexes W:VRLT>w>
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[indexes.length - 1]; :QGgtTEV""
elseif(startIndex < 0) sbqAjm}
this.startIndex = 0; u]RI,3Z
else{ 0&wbGbg(W
this.startIndex = indexes ~?E.U,R
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[startIndex / pageSize]; $z[FL=h)?+
} 'ONCz
} awu18(;J
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publicint getNextIndex(){ ePLpGT
int nextIndex = getStartIndex() + CvkZ<i){
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pageSize; Z8 eB5!$
if(nextIndex >= totalCount) .! 'SG6 q
return getStartIndex(); P]cC2L@Vbi
else ;[)O{%s
return nextIndex; [0>I6Jl
} /hF@Xh%hY
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publicint getPreviousIndex(){ I.dS-)Y
int previousIndex = getStartIndex() - [8%R*}
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pageSize; sH_B*cr3
if(previousIndex < 0) a)lS)*Y
return0; >>nOS] UL
else Rq@M~;p
return previousIndex; 4J5 RtK
} xky +"
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} 9@3cz_[J
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抽象业务类 K6Z/
java代码: [ikW3 '99,
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/** T;C0t9Yew
* Created on 2005-7-12 Qo\+FkhYq
*/ <rI8O;\H
package com.javaeye.common.business;
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import java.io.Serializable; as^!c!
import java.util.List; nq%GLUH
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import org.hibernate.Criteria; Um%$TGw5
import org.hibernate.HibernateException; wN]]t~K)Q
import org.hibernate.Session; h?7@]&VJ
import org.hibernate.criterion.DetachedCriteria; 2A&Y