Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 c
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 >]Mq)V9
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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 -"~L2f"?
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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 T&9`?QD
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分页支持类: +(;8@"u
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java代码: :D"@6PC]
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package com.javaeye.common.util; uk`T+@K
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import java.util.List; b7,
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publicclass PaginationSupport { 7*zB*"B'1t
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publicfinalstaticint PAGESIZE = 30; f!5F]qP>-
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privateint pageSize = PAGESIZE; -L@]I$Yo
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privateList items; wENzlXeOP
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privateint totalCount; s{yJ:WncI
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privateint[] indexes = newint[0]; 'n~fR]h}
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privateint startIndex = 0; 60`+9(^
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public PaginationSupport(List items, int n`P`yb\f$
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totalCount){ ?V#Gx>\
setPageSize(PAGESIZE); &(gm4bTg
setTotalCount(totalCount); i4 hJE
setItems(items); n4^*h4J7
setStartIndex(0); {UP'tXah
} aQ&uC )w
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public PaginationSupport(List items, int 0r1g$mKb
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totalCount, int startIndex){ FI\IY
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setPageSize(PAGESIZE); '4$lL6ly>
setTotalCount(totalCount); R"NGJu9
setItems(items); ppEJs
setStartIndex(startIndex); S,lxM,DL&
} O4T'o.
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public PaginationSupport(List items, int Was'A+GZ
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totalCount, int pageSize, int startIndex){ DYX-5~;!
setPageSize(pageSize); /E)9v$!
setTotalCount(totalCount); Z,3 CC \
setItems(items); <lFdexH"T
setStartIndex(startIndex); .
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} 6A}eSG3
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publicList getItems(){ (/'h4KS@
return items; ])C>\@c6Gm
} }xqXd%uz
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publicvoid setItems(List items){ &(g|="T
this.items = items; LaDY`u0G%
} 9J?W '8s5
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publicint getPageSize(){ kg:l:C)Tq
return pageSize; Te+^J8
} 9GThyY
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publicvoid setPageSize(int pageSize){ V7P6zAJy
this.pageSize = pageSize; oB4#J*
} `Z:3`7c
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publicint getTotalCount(){ c)03Ms4
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return totalCount; z4g+2f7h-X
} eO'xkm
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publicvoid setTotalCount(int totalCount){ }S,-uggz
if(totalCount > 0){ 7ZQ'h3K
this.totalCount = totalCount; c -w0
int count = totalCount / `0?^[;[u[
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pageSize; sW?B7o?
if(totalCount % pageSize > 0) bjlkX[{}I
count++; or7pJy%4"
indexes = newint[count]; va^0JfQ
for(int i = 0; i < count; i++){ z`OkHX*+2|
indexes = pageSize * ZY)%U*jWU
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} SBX|Bcyk*
}else{ Yc
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this.totalCount = 0; vb
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} ;,dkJ7M
} [.a;L">
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publicint[] getIndexes(){ &
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return indexes; V/ +Jc(N
} l&3ki!
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publicvoid setIndexes(int[] indexes){ \dTQQ
this.indexes = indexes; @89I#t6A.
} ) \4
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publicint getStartIndex(){ pisB,wP$2
return startIndex; -AC`q/bCD
} 9^!wUwB
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publicvoid setStartIndex(int startIndex){ *0~M
if(totalCount <= 0) n$YE !D'
this.startIndex = 0; H UkerV
elseif(startIndex >= totalCount) -E]Sk&4Gj
this.startIndex = indexes y@`~ 9$
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[indexes.length - 1]; wLUF v(&C
elseif(startIndex < 0) U{}!y3[wK
this.startIndex = 0; tOM(U-7Z&
else{ Px#$uU
this.startIndex = indexes wyzOcx>M
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[startIndex / pageSize]; ]^ #`j
} zP&q7 t;>
} ZBJ3 VK
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publicint getNextIndex(){ .'/l'>
int nextIndex = getStartIndex() + b_=8!Q.:
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pageSize; 6- ]h5L]
if(nextIndex >= totalCount) Gqt-_gga
return getStartIndex(); {5-zyE
else [O_^MA,z
return nextIndex; *NlpotW,f
} &6/%kkv
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publicint getPreviousIndex(){ W' ep6O
int previousIndex = getStartIndex() - &K
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pageSize; % $TEDr!
if(previousIndex < 0) #Qd'+M
return0; `
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else x@m<Ym-
return previousIndex; j{;|g%5t
} VFSz-<L
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} e:OyjG5_
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抽象业务类 hwVAXsF~
java代码: h!e2
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/** `?9T~,
* Created on 2005-7-12 ZPyM>XK$4
*/ *QH[,F`I
package com.javaeye.common.business; 8bOT*^b$H
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import java.io.Serializable; NR4Jn?l{
import java.util.List; 6^E`Sa!s
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import org.hibernate.Criteria; gvyT-XI
import org.hibernate.HibernateException; >'`Sf ?+|
import org.hibernate.Session; j[XYj6*d
import org.hibernate.criterion.DetachedCriteria; >vujZw_0>
import org.hibernate.criterion.Projections; jK3\K/ob(
import ,[`$JNc
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org.springframework.orm.hibernate3.HibernateCallback; xmr|'}Pt[
import [M:S`{SbY
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org.springframework.orm.hibernate3.support.HibernateDaoS #3 bv3m
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upport; U=cWmH
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import com.javaeye.common.util.PaginationSupport; a2yE:16o6
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public abstract class AbstractManager extends OVR?*"N_
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HibernateDaoSupport { z(H?VfJo
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privateboolean cacheQueries = false; =yqHC<8:
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privateString queryCacheRegion; vT7g<
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publicvoid setCacheQueries(boolean &U"X$aFc
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cacheQueries){ >]&X ^V%Q#
this.cacheQueries = cacheQueries; | ^GyH$.
} XP?*=Z]
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publicvoid setQueryCacheRegion(String maC>LBa2/
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queryCacheRegion){ #$'FSy#
this.queryCacheRegion = <I2z&
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queryCacheRegion; d?hz LX
} 4D"4zp7
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publicvoid save(finalObject entity){ (oaYF+T
getHibernateTemplate().save(entity); 6sB$<#
} ,2`~ NPb
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publicvoid persist(finalObject entity){ HZZDv+
getHibernateTemplate().save(entity); nl
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} 8Xn!Kpa
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publicvoid update(finalObject entity){ 6RK\}@^=K
getHibernateTemplate().update(entity); "!Lkp2\
} >I<PO.c!
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publicvoid delete(finalObject entity){ - k`.j
getHibernateTemplate().delete(entity); Gt~JA0+C)7
} nQ=aLV+'
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publicObject load(finalClass entity, z%:1)
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finalSerializable id){ AyVrk
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return getHibernateTemplate().load !wh&>3~
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(entity, id); #a,9B-X
} ({[,$dEa;
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publicObject get(finalClass entity, -MfQ&U
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finalSerializable id){ $<w)j!
return getHibernateTemplate().get nvyB/
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(entity, id); 6E^~n
} &88oB6$D^q
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publicList findAll(finalClass entity){ Q"VMNvKYB
return getHibernateTemplate().find("from D7Zm2Kj
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" + entity.getName()); DWf$X1M
} 0=![fjm
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publicList findByNamedQuery(finalString ~<ri97)
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namedQuery){ l\Xd.H" j,
return getHibernateTemplate ycX{NDGs
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