Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 /0fHkj/J=B
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 `g)
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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 H Vhd#Q;
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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 K=}Eupn=
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分页支持类: 7zA+UWr
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java代码: {.[EX MX
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package com.javaeye.common.util; A=Hv}lv
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import java.util.List; 0 z]H=
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publicclass PaginationSupport { ocMTTVo
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publicfinalstaticint PAGESIZE = 30; (!J;g|58
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privateint pageSize = PAGESIZE; v^F00@2I
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privateList items; s,!vBSn8
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privateint totalCount; p5w9X+G%
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privateint[] indexes = newint[0]; 1[#sHj$Na`
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privateint startIndex = 0; m,62'
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public PaginationSupport(List items, int yGrnzB6|
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totalCount){ 1@|%{c&+9
setPageSize(PAGESIZE); m']$)Iqw
setTotalCount(totalCount); }u$c*}
setItems(items); dTu*%S1Z
setStartIndex(0); JKO*bbj
} n9k
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public PaginationSupport(List items, int *qAG0EM|
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totalCount, int startIndex){ O@W/s!&lFa
setPageSize(PAGESIZE); $sg- P|Wo
setTotalCount(totalCount); YWD gRb
setItems(items); j8bA"r1
setStartIndex(startIndex); VAUd^6Xdwx
} I>vU;xV\m
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public PaginationSupport(List items, int :%j"l7=>
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totalCount, int pageSize, int startIndex){ Ui9;rh$1eU
setPageSize(pageSize); I.|b:c
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setTotalCount(totalCount); ;L#RFdh
setItems(items); d)D!np=
setStartIndex(startIndex); &m[}%e%~0
} 02tN=}Cj)
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publicList getItems(){ F9r/
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return items; "rEfhzmyF
} jq8TfJ|
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publicvoid setItems(List items){ *P]]7DR
this.items = items; .d$Q5Qae
} D+! S\~u
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publicint getPageSize(){ 2J$vX(
return pageSize; .0gfP4{1{
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publicvoid setPageSize(int pageSize){ Z)=S>06X Q
this.pageSize = pageSize; ePI N<F;I
} ydY 7 :D
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publicint getTotalCount(){ |22vNt_
return totalCount; `'EG7
} qdKqc,R1{
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publicvoid setTotalCount(int totalCount){ 4b`Fi@J\
if(totalCount > 0){ "AKr;|m
this.totalCount = totalCount; %hZX XpuO
int count = totalCount / kq?:<!z
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pageSize; F^%\AA]8
if(totalCount % pageSize > 0) Fv$w:r]q6
count++; Jg{K!P|i
indexes = newint[count]; Mw-L?j0o[k
for(int i = 0; i < count; i++){ W?P4oKsql*
indexes = pageSize * 4${3e
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} #2:?N8vz*
}else{ Lp@Al#X55
this.totalCount = 0; 5WxNH}{
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} qp#Euq6
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publicint[] getIndexes(){ AFvv+
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return indexes; 5rCJIl.
} n_LK8
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publicvoid setIndexes(int[] indexes){ 3B,dL|q(@J
this.indexes = indexes; {}iS5[H]
} u8|CeA
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publicint getStartIndex(){ }aXS MxCd
return startIndex; DKem;_6OQ
} )dEcKH<#
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publicvoid setStartIndex(int startIndex){ KU0Ad);e
if(totalCount <= 0) q(hBqU W
this.startIndex = 0; T \- x3i
elseif(startIndex >= totalCount) \dE{[^.5
this.startIndex = indexes OK`^DIr5l
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[indexes.length - 1]; Pec Zuv
elseif(startIndex < 0) UGgo;e
this.startIndex = 0; F6Q%<p a
else{ 8'TIDu
this.startIndex = indexes 7P*\|Sxk%
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[startIndex / pageSize]; )t7MD(
} 4@<wN \'
} -JPkC(V7]
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publicint getNextIndex(){ ~OxFgKn23&
int nextIndex = getStartIndex() + ZPq.|6&
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pageSize; ZfVY:U:o>
if(nextIndex >= totalCount) 6|3 X*Orn
return getStartIndex(); NRT]dYf"z
else Xppb|$qp4H
return nextIndex; nec}grA
} h?B1Emlq
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publicint getPreviousIndex(){ EowzEGq!a5
int previousIndex = getStartIndex() - _!Tjb^
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pageSize; Cd]A1<6s
if(previousIndex < 0) a&)!zhVP
return0; }opMf6`w
else 1|H4]!7kE
return previousIndex; :(yut
} |#yT]0L%pA
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} {TJBB/B1
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抽象业务类 `T7TWv"M
java代码: `l.bU3C
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/** n$7*L9)(C
* Created on 2005-7-12 NW3qs`$-(
*/ 8+".r2*_iO
package com.javaeye.common.business; fB,eeT1v?h
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import java.io.Serializable; 9b,0_IMHH
import java.util.List; J:ka@2>|
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import org.hibernate.Criteria; V,'_BUl+x
import org.hibernate.HibernateException; }oSgx
import org.hibernate.Session; B3?rR-2mEE
import org.hibernate.criterion.DetachedCriteria; {^uiu^RAc
import org.hibernate.criterion.Projections; 34k>O
import $9r4MMs{$
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org.springframework.orm.hibernate3.HibernateCallback; kZrc^
import } snS~kx
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org.springframework.orm.hibernate3.support.HibernateDaoS Dr=$ }Y
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upport; f/IQ2yT-:D
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import com.javaeye.common.util.PaginationSupport; JhTr{8{
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public abstract class AbstractManager extends .7 LQ l?
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HibernateDaoSupport { _~C1M&b(X3
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privateboolean cacheQueries = false; XE2rx2k
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privateString queryCacheRegion; t)?K@{ 9
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publicvoid setCacheQueries(boolean ) )FLM^dj
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