Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 =M`Xu#eRk
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 _Nacqa
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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 @id!F<+%oD
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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 ]8f$&gw&A
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分页支持类: Te2C<c
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java代码: i F \H
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package com.javaeye.common.util; rT(b t~Z
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import java.util.List; c2Wp 8l
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publicclass PaginationSupport { %>!W+rO,
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publicfinalstaticint PAGESIZE = 30; mO2u9?N
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privateint pageSize = PAGESIZE; hc*t Q2
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privateList items; Y<h6m]H
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privateint totalCount; upnX7as
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privateint[] indexes = newint[0]; -"rANP-UI
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privateint startIndex = 0; ?x/Lb*a^
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public PaginationSupport(List items, int 5Od&-~O
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totalCount){ 6)c-s|#
setPageSize(PAGESIZE); PD~vq^@Q
setTotalCount(totalCount); nNf*Q
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setItems(items); |
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setStartIndex(0);
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} ]k8f1F
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public PaginationSupport(List items, int 6F5g2hBz
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totalCount, int startIndex){ hj}PL
setPageSize(PAGESIZE); Xck`"RU<xA
setTotalCount(totalCount); I4KE@H"%7
setItems(items); !hjF"Pa
setStartIndex(startIndex); Ww"]3
} f!H/X%F
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public PaginationSupport(List items, int C80< L5\
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totalCount, int pageSize, int startIndex){ o=6 <?v7
setPageSize(pageSize); wbvOf X
setTotalCount(totalCount); jYvl-2A'
setItems(items); upZtVdd
setStartIndex(startIndex); m2P&DdN[
} FmFjRYA W
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publicList getItems(){ nSRNd
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return items; t fD7!N{
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publicvoid setItems(List items){ +prUau*
this.items = items; _8!x
} ?z2! ?
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publicint getPageSize(){ f'w`<
return pageSize; #kh:GAp]
} D/JSIDd
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publicvoid setPageSize(int pageSize){ G&@dJ &B
this.pageSize = pageSize; I ~^Xw7
} |rG)Q0H,
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publicint getTotalCount(){ H%etYpD
return totalCount; _aBy>=2c$
} 8a&c=9
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publicvoid setTotalCount(int totalCount){ T?QW$cU!e:
if(totalCount > 0){ 5Zd oem
this.totalCount = totalCount; F" M
int count = totalCount / R\XS5HOE(
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pageSize; (wu ciKQ
if(totalCount % pageSize > 0) O9E:QN<U`*
count++; y:^o._
indexes = newint[count]; #"lb9._M
for(int i = 0; i < count; i++){ *v]s&$WyO
indexes = pageSize * %P M#gnt@
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} _x1W\#
}else{ ~\i(bFd)
this.totalCount = 0; L6DYunh}^N
} Shn=Q
} ?o$t{AQ
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publicint[] getIndexes(){ ^_g%c&H
return indexes; ('Qq"cn#
} B@NBN&Fr
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publicvoid setIndexes(int[] indexes){ hczDu8
this.indexes = indexes; [Eccj`\e g
} U._fb=
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publicint getStartIndex(){ 8Iu6r}k?~`
return startIndex; fP5i3[T
} 4x(m.u@
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publicvoid setStartIndex(int startIndex){ +])<}S!M
if(totalCount <= 0) ?bt;i>O\
this.startIndex = 0; j6RV{Lkr_
elseif(startIndex >= totalCount) 7M7Lj0Y)L
this.startIndex = indexes )^AZmUYZ
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[indexes.length - 1]; T#i;=NP"
elseif(startIndex < 0) L.yM"
this.startIndex = 0; q~
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else{ $[?N^
this.startIndex = indexes U5wh( vi
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[startIndex / pageSize]; :Ae#+([V
} UkpTK8>&
} S|)atJJ0G"
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publicint getNextIndex(){ _AX,}9
int nextIndex = getStartIndex() + WZn;u3,R
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pageSize; z9 Ch %A{
if(nextIndex >= totalCount) \%Y`>x.
return getStartIndex(); B
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else 89^g$ ac
return nextIndex; ! J<Xel{
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publicint getPreviousIndex(){ (}6\_k[}m
int previousIndex = getStartIndex() - e
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pageSize; ZCj1Cz]"l<
if(previousIndex < 0) PNo:[9`S;m
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else 7F0J*M
return previousIndex; y3b"'-%
} VnkhY
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抽象业务类 48^C+#Jbc
java代码: 5o 5DG
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/** KCbJ^Rln
* Created on 2005-7-12 3Fn}nek
*/ R|8L'H+1x
package com.javaeye.common.business; WHBGhU
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import java.io.Serializable; |3E|VGm~
import java.util.List; |wv+g0]Pg^
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import org.hibernate.Criteria; +C7E]0!r
import org.hibernate.HibernateException; $8U$.~v
import org.hibernate.Session; W[DoQ @q
import org.hibernate.criterion.DetachedCriteria; _F[a2PE2+
import org.hibernate.criterion.Projections; @OT$* Qh
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org.springframework.orm.hibernate3.HibernateCallback; (nmsw6
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import Ew{*)r)m
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org.springframework.orm.hibernate3.support.HibernateDaoS 0_ST2I"Ln
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upport; NY<qoV
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import com.javaeye.common.util.PaginationSupport; &F:.V$
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public abstract class AbstractManager extends |pBFmm*
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HibernateDaoSupport { |,`"Omb9+m
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privateboolean cacheQueries = false; 8$]SvfX
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privateString queryCacheRegion; )K]p^lO
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publicvoid setCacheQueries(boolean }z/%b<o_
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cacheQueries){ {`*Fu/Upb
this.cacheQueries = cacheQueries; $v2t6wS,"
} LqI&1$#
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publicvoid setQueryCacheRegion(String "AXgT[ O
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queryCacheRegion){ $Lbamg->E
this.queryCacheRegion = O>vCi&
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queryCacheRegion; _]ZlGq!L
} ?RsPAL
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publicvoid save(finalObject entity){ -{Ar5) ?='
getHibernateTemplate().save(entity); R#y"SxD()
} pN9U1!|uam
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publicvoid persist(finalObject entity){ EQpF:@_
getHibernateTemplate().save(entity); ~@Bw(!
} #/H2p`5
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publicvoid update(finalObject entity){ BUsxgs"),
getHibernateTemplate().update(entity); m##!sF^k~J
} y<nPZ<