Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 6>
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 Tku6X/LF
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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 9NNXj^7
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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 _N)&<'lB<
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分页支持类: YDj5+'y
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java代码: M_>kefr
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package com.javaeye.common.util; #TO^x&3@
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import java.util.List; d3S Me
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publicclass PaginationSupport { pnyu&@e
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publicfinalstaticint PAGESIZE = 30; Yyr9Kj:
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privateint pageSize = PAGESIZE; ~P"Agpx3u
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privateList items; 0:<Y@#L
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privateint totalCount; [u37Hy_Gi
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privateint[] indexes = newint[0]; TA2ETvz^
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privateint startIndex = 0; ~!Nw]lb!
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public PaginationSupport(List items, int ?6{g7S%
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totalCount){ i3Bpim.
setPageSize(PAGESIZE); ",J&UTUh
setTotalCount(totalCount); k0#s{<I]E
setItems(items); 'bz&m( !
setStartIndex(0); D~U RY_[A
} C"B'Dj
}!R*Q`m
public PaginationSupport(List items, int !{+.)%d'g
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totalCount, int startIndex){ TI/RJF b
setPageSize(PAGESIZE); / o
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setTotalCount(totalCount); ViMl{3
setItems(items); "bF52lLu
setStartIndex(startIndex); -gS9I^
} V$O 6m|q
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public PaginationSupport(List items, int *78c2`)[
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totalCount, int pageSize, int startIndex){ _SOwiz
setPageSize(pageSize); #+V4<o
setTotalCount(totalCount); 9H/R@i[E
setItems(items); e&U$;sS`
setStartIndex(startIndex); Wf"GA i
} 5`+9<8V
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publicList getItems(){ C.ji]P#
return items; qe&B$3D|
} ,Xfu?Yan
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publicvoid setItems(List items){ r|DIf28MIq
this.items = items; CfP-oFHoQ
} !ehjLFS? _
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publicint getPageSize(){ A%HIfSzQBS
return pageSize; AWx@Z7\z"g
} W02z}"#
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publicvoid setPageSize(int pageSize){ 6w;`A9G[YI
this.pageSize = pageSize; =E%@8ZbK
} 'TH[Db'`I
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publicint getTotalCount(){ +y8Y@e}>
return totalCount; Y6H?ZOq
} 1Q!^*D
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publicvoid setTotalCount(int totalCount){ K8MET&
if(totalCount > 0){ d=%NFCIV
this.totalCount = totalCount; LQ4:SV'3
int count = totalCount / QOYMT( j
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pageSize; kk6
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if(totalCount % pageSize > 0) `y^\c#k
count++; d~%7A5
indexes = newint[count]; B=~y(Mb
for(int i = 0; i < count; i++){ fuv{2[NV
indexes = pageSize * WPNw")t!
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} qve'Gm)
}else{ .24z+|j
this.totalCount = 0; ;hO6 p
} /7Pqy2sgE
} YX-j|m|
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publicint[] getIndexes(){ H@G$K@L
return indexes; RH<2f5-sC!
} M(K7xx+G
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publicvoid setIndexes(int[] indexes){ mHW%:a\L
this.indexes = indexes; pgh(~[
} MQx1|>rG
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publicint getStartIndex(){ cxSHSv1;
return startIndex; F%o!+%&7
} s9CmR]C
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publicvoid setStartIndex(int startIndex){ 6P717[
if(totalCount <= 0) 2p](`Y`
this.startIndex = 0; O{~Xp!QQt
elseif(startIndex >= totalCount) =dA]nM
this.startIndex = indexes N WF h<
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[indexes.length - 1]; C 4C/
elseif(startIndex < 0) E9j<+Ik
this.startIndex = 0; s.Z{mnD6
else{ Y`]P&y
this.startIndex = indexes L+%kibnY'
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[startIndex / pageSize]; W@r<4?Oat
} _xePh
} [.xY>\e
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publicint getNextIndex(){ }vU/]0@,E
int nextIndex = getStartIndex() + >xS({1A}
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pageSize; iv +a5
if(nextIndex >= totalCount) ^`id/
return getStartIndex(); k6ry"W3
else *izCXfW7
return nextIndex; \)t//0
} J+IItO4%
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publicint getPreviousIndex(){ r/AOgS
int previousIndex = getStartIndex() - 3 5.&!4}
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pageSize; F}45.CrD
if(previousIndex < 0) T})q/oUqK
return0; 8\P,2RSnt
else |\uj(|
return previousIndex; $eI
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} |X:`o;Uma
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} v LN KX;9
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抽象业务类 _|12BVq
java代码: 4y3c=L
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/** VNT?
* Created on 2005-7-12 t{iRCj
*/ N9G xJ6
package com.javaeye.common.business; Sdmz(R
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import java.io.Serializable; q1u$Sm
import java.util.List; 1O0. CC,p
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import org.hibernate.Criteria; #2U# h-vI
import org.hibernate.HibernateException; 2! ,ndLA
import org.hibernate.Session; co8R-AB
import org.hibernate.criterion.DetachedCriteria; yOEy3d=*
import org.hibernate.criterion.Projections; Cn5"zDK$
import 0`7yPq*
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org.springframework.orm.hibernate3.HibernateCallback; *s 4Ym
import QnS^ G{
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org.springframework.orm.hibernate3.support.HibernateDaoS yW'{Z]09
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upport; ,yNuz@^
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import com.javaeye.common.util.PaginationSupport; PRiE2Di2S
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public abstract class AbstractManager extends !5De?OXe
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HibernateDaoSupport { meV Z_f/
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privateboolean cacheQueries = false; C)i8XX
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privateString queryCacheRegion; }G{"Mp4
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publicvoid setCacheQueries(boolean p%*s3E1.D
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cacheQueries){ g`'!Vgd?M[
this.cacheQueries = cacheQueries; ,}W|cm>
} "ADI.
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publicvoid setQueryCacheRegion(String u
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queryCacheRegion){ o%j?}J7y
this.queryCacheRegion = \Db`RvEmR
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queryCacheRegion; >F7HKwg}Z
} 30WOH
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publicvoid save(finalObject entity){ FYFlh^}
getHibernateTemplate().save(entity); `~d7l@6F
} G|nBja8vm
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publicvoid persist(finalObject entity){ q M_c-^F
getHibernateTemplate().save(entity); L7<30"7
} $}b)EMMM
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publicvoid update(finalObject entity){ yI|x
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getHibernateTemplate().update(entity); kw z6SObQ
} \Cq4r4'
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publicvoid delete(finalObject entity){ aTm R~k
getHibernateTemplate().delete(entity); 0sw;h.VY
} xPm{'J+b~
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publicObject load(finalClass entity, i^:#*Q-co
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finalSerializable id){ 93.\.&L\
return getHibernateTemplate().load FsOJmWZ
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(entity, id); 1O0)+9T82
} pFMjfWD,C
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publicObject get(finalClass entity, )skpf%g
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finalSerializable id){ a3M I+
return getHibernateTemplate().get o8:9Yjs
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(entity, id); *"_W1}^
} 'z}9BGR!
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publicList findAll(finalClass entity){ M9fQ,<c<6
return getHibernateTemplate().find("from 6v scu2
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" + entity.getName()); `2+TN
} W!" $g
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publicList findByNamedQuery(finalString D0bpD
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namedQuery){ *B@#A4f"
return getHibernateTemplate d,i4WKp
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().findByNamedQuery(namedQuery); @kDY c8 t9
} %}N01P|X>
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publicList findByNamedQuery(finalString query, yMkR)HY
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finalObject parameter){ E*T6kp^b
return getHibernateTemplate XD6Kp[s
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().findByNamedQuery(query, parameter); ?r)>SB3(e
} )!VJ\
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publicList findByNamedQuery(finalString query, u&={hJ&7
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finalObject[] parameters){ tr0kTW$Ad
return getHibernateTemplate +6+1N)L
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().findByNamedQuery(query, parameters); vnbY^ASdw
} u#u/uS"
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publicList find(finalString query){ +DefV,Ny
return getHibernateTemplate().find JY:Fu
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(query); Cv>~%<
} %>zG;4
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publicList find(finalString query, finalObject H%=;pD>o
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parameter){ "\~>[on
return getHibernateTemplate().find t=:5?}J.Q$
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(query, parameter); F|VHr@%
} 1:DA{ejS
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public PaginationSupport findPageByCriteria rOUQg_y
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(final DetachedCriteria detachedCriteria){ L1 k
return findPageByCriteria MfI+o<{r
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); Om7 '_}
} 9w0v?%%_
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public PaginationSupport findPageByCriteria S n~P1C
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(final DetachedCriteria detachedCriteria, finalint Q0ezeo
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startIndex){ s"tH?m
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return findPageByCriteria HDE5Mg "
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(detachedCriteria, PaginationSupport.PAGESIZE, ]E.FBGT
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startIndex); nhm#_3!6A
} H-m).^
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public PaginationSupport findPageByCriteria 3s*mq@~1X
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(final DetachedCriteria detachedCriteria, finalint fgo3Gy*#
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pageSize, 9CIQRc
finalint startIndex){ .v=n-k7
return(PaginationSupport) yRhD<